Trial Outcomes & Findings for StandUPTV: Reducing Sedentary Screen Time in Adults (NCT NCT04464993)
NCT ID: NCT04464993
Last Updated: 2025-04-15
Results Overview
Minutes per day as measured by Stand UPTV app and activPAL
Recruitment status
COMPLETED
Study phase
NA
Target enrollment
110 participants
Primary outcome timeframe
Baseline to 16 weeks
Results posted on
2025-04-15
Participant Flow
Data collection was scheduled to begin in July 2020 but was delayed until June 21, 2021 because of COVID-19. Specifically, we removed planned cardiovascular biomarker assessment, and the protocol was modified to conduct all assessments virtually, which opened recruitment to those outside the Phoenix, AZ and San Luis Obispo areas but delayed the start of the study. Enrollment continued until April 2023, and data collection was completed in September 2023.
The participants were required to have ≥4 days of measured screen time (i.e., verification from the study server that tablet and WeMo data were transmitted \> 10 h/day) during the baseline period and were asked to repeat the baseline test if they had \< 4 days recorded.
Participant milestones
| Measure |
CORE
Participants will receive a "core" intervention which will include a basic version of the StandUPTV app and a Fitbit watch.The Fitbit will provide device-based behavioral feedback through the StandUPTV self-monitoring component. SST feedback will be Self-monitoring will provide passive and objective feedback regarding SST behaviors and MVPA drawn from Fitbit and SCREENTIME sources. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
|
CORE + Text
CORE components + The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV app) that will provide simple adaptive content based upon length of most recent SST bout and time of day. These prompts will specifically target outcome expectations around SST and MVPA.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Context-based prompts: TEXT: The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV, not text message based) that will provide simple adaptive content. Content of the prompts will be educational (i.e., based on risks of sedentary screen time) and motivational (i.e., advice to reduce sedentary screen time).
|
CORE + Lockout
CORE components + Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the StandUPTV app will restrict screen time through the end of the week (Monday-Sunday). Participants will be provided with a planning tool for planning SST.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Sedentary Screen Time lockout: LOCKOUT The investigators will enforce a 50% per week reduction in SST, based upon a baseline week of observation. If SST reaches the prescribed threshold, the investigators will use the limits feature to restrict screen time through the end of the week (Monday-Sunday); at which point, 50% baseline allotment will be reinstated for an additional week.
|
CORE + Earn
CORE components + 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the investigators will use the limits from the StandUPTV app to restrict screen time through the end of the week (Monday-Sunday). Participants will be provided a planning tool for planning SST on a daily basis in order to reach their over 50% reduction goal.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. All participants will be provided a behavioral target of reducing their SST by 50% from their baseline.
EARN: Earn sedentary screen time through moderate-vigorous physical activity: EARN Participants assigned to the EARN component will earn SST by engaging in a \>5 min continuous bout of exercise (as defined by Fitbit minutes \>4 metabolic equivalents). They will earn SST on a 3:1 ratio up until they reach their baseline level of MVPA (5 mins of exercise earns 15 mins of SST). They will receive behavioral strategies to reduce screen time within the app (e.g., self-efficacy, barriers, exercising safely) and a planning tool for scheduling MVPA.
|
CORE + Text + Earn
Intervention components will be delivered as described in simpler factorial conditions.
App shows progress toward SST goal or if goal is exceeded. Can earn additional SST through exercise based on 3:1 ratio , simple adaptive content (by SST bout, time of day). Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week of observation.
|
CORE + Text + Lockout
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Simple adaptive content (by SST bout, time of day).
|
CORE + Earn + Lockout
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio.
|
CORE + Earn + Lockout + Text
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio). Simple adaptive content (by SST bout, time of day).
|
|---|---|---|---|---|---|---|---|---|
|
Overall Study
STARTED
|
11
|
13
|
14
|
16
|
15
|
15
|
10
|
16
|
|
Overall Study
COMPLETED
|
10
|
9
|
11
|
15
|
14
|
13
|
7
|
15
|
|
Overall Study
NOT COMPLETED
|
1
|
4
|
3
|
1
|
1
|
2
|
3
|
1
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
StandUPTV: Reducing Sedentary Screen Time in Adults
Baseline characteristics by cohort
| Measure |
CORE
n=11 Participants
Participants will receive a "core" intervention which will include a basic version of the StandUPTV app and a Fitbit watch to use throughout the 16-week intervention.The Fitbit will provide device-based behavioral feedback through the StandUPTV self-monitoring component. SST feedback will be Self-monitoring will provide passive and objective feedback regarding SST behaviors and MVPA drawn from Fitbit and SCREENTIME sources. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
|
CORE + Text
n=13 Participants
CORE components + The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV app) that will provide simple adaptive content based upon length of most recent SST bout and time of day. These prompts will specifically target outcome expectations around SST and MVPA.
|
CORE + Lockout
n=14 Participants
CORE components + Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week of observation. If SST reaches the prescribed threshold, the investigators will use the limits from the StandUPTV app to restrict screen time through the end of the week (Monday-Sunday); at which point, 50% baseline allotment will be reinstated for an additional week. Participants will be provided with a planning tool for planning SST on a daily basis in order to reach their over 50% reduction goal.
|
CORE + Earn
n=16 Participants
CORE components + the investigators will enforce a 50% per week reduction in SST, based upon a baseline week of observation. If SST reaches the prescribed threshold, the investigators will use the limits from the StandUPTV app to restrict screen time through the end of the week (Monday-Sunday); at which point, 50% baseline allotment will be reinstated for an additional week. Participants will be provided a planning tool for planning SST on a daily basis in order to reach their over 50% reduction goal.
|
CORE + Text + Earn
n=15 Participants
Intervention components will be delivered as described in simpler factorial conditions.
App shows progress toward SST goal or if goal is exceeded. Can earn additional SST through exercise based on 3:1 ratio , simple adaptive content (by SST bout, time of day). Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week of observation.
|
CORE + Text + Lockout
n=15 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Simple adaptive content (by SST bout, time of day).
|
CORE + Earn + Lockout
n=10 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio.
|
CORE + Earn + Lockout + Text
n=16 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio). Simple adaptive content (by SST bout, time of day).
|
Total
n=110 Participants
Total of all reporting groups
|
|---|---|---|---|---|---|---|---|---|---|
|
Age, Continuous
|
36.5 years
STANDARD_DEVIATION 10.6 • n=5 Participants
|
45.5 years
STANDARD_DEVIATION 12.7 • n=7 Participants
|
47.0 years
STANDARD_DEVIATION 10.5 • n=5 Participants
|
42.9 years
STANDARD_DEVIATION 12.7 • n=4 Participants
|
40.8 years
STANDARD_DEVIATION 12.2 • n=21 Participants
|
42.7 years
STANDARD_DEVIATION 10.9 • n=10 Participants
|
41.5 years
STANDARD_DEVIATION 12.7 • n=115 Participants
|
42.0 years
STANDARD_DEVIATION 11.7 • n=6 Participants
|
42.0 years
STANDARD_DEVIATION 11.7 • n=6 Participants
|
|
Sex: Female, Male
Female
|
10 Participants
n=5 Participants
|
11 Participants
n=7 Participants
|
12 Participants
n=5 Participants
|
13 Participants
n=4 Participants
|
10 Participants
n=21 Participants
|
12 Participants
n=10 Participants
|
8 Participants
n=115 Participants
|
14 Participants
n=6 Participants
|
90 Participants
n=6 Participants
|
|
Sex: Female, Male
Male
|
1 Participants
n=5 Participants
|
2 Participants
n=7 Participants
|
2 Participants
n=5 Participants
|
3 Participants
n=4 Participants
|
5 Participants
n=21 Participants
|
3 Participants
n=10 Participants
|
2 Participants
n=115 Participants
|
2 Participants
n=6 Participants
|
20 Participants
n=6 Participants
|
|
Ethnicity (NIH/OMB)
Hispanic or Latino
|
2 Participants
n=5 Participants
|
5 Participants
n=7 Participants
|
3 Participants
n=5 Participants
|
3 Participants
n=4 Participants
|
2 Participants
n=21 Participants
|
3 Participants
n=10 Participants
|
2 Participants
n=115 Participants
|
3 Participants
n=6 Participants
|
23 Participants
n=6 Participants
|
|
Ethnicity (NIH/OMB)
Not Hispanic or Latino
|
9 Participants
n=5 Participants
|
8 Participants
n=7 Participants
|
11 Participants
n=5 Participants
|
13 Participants
n=4 Participants
|
13 Participants
n=21 Participants
|
12 Participants
n=10 Participants
|
8 Participants
n=115 Participants
|
13 Participants
n=6 Participants
|
87 Participants
n=6 Participants
|
|
Ethnicity (NIH/OMB)
Unknown or Not Reported
|
00 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
0 Participants
n=4 Participants
|
0 Participants
n=21 Participants
|
0 Participants
n=10 Participants
|
0 Participants
n=115 Participants
|
0 Participants
n=6 Participants
|
0 Participants
n=6 Participants
|
|
Race/Ethnicity, Customized
Race · White
|
9 Participants
n=5 Participants
|
11 Participants
n=7 Participants
|
13 Participants
n=5 Participants
|
12 Participants
n=4 Participants
|
9 Participants
n=21 Participants
|
10 Participants
n=10 Participants
|
7 Participants
n=115 Participants
|
11 Participants
n=6 Participants
|
82 Participants
n=6 Participants
|
|
Race/Ethnicity, Customized
Race · Black
|
1 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
0 Participants
n=4 Participants
|
1 Participants
n=21 Participants
|
1 Participants
n=10 Participants
|
1 Participants
n=115 Participants
|
1 Participants
n=6 Participants
|
5 Participants
n=6 Participants
|
|
Race/Ethnicity, Customized
Race · Asian
|
1 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
4 Participants
n=4 Participants
|
3 Participants
n=21 Participants
|
2 Participants
n=10 Participants
|
1 Participants
n=115 Participants
|
3 Participants
n=6 Participants
|
14 Participants
n=6 Participants
|
|
Race/Ethnicity, Customized
Race · Other
|
0 Participants
n=5 Participants
|
1 Participants
n=7 Participants
|
1 Participants
n=5 Participants
|
0 Participants
n=4 Participants
|
0 Participants
n=21 Participants
|
2 Participants
n=10 Participants
|
1 Participants
n=115 Participants
|
1 Participants
n=6 Participants
|
6 Participants
n=6 Participants
|
|
Race/Ethnicity, Customized
Race · Unknown
|
0 Participants
n=5 Participants
|
1 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
0 Participants
n=4 Participants
|
2 Participants
n=21 Participants
|
0 Participants
n=10 Participants
|
0 Participants
n=115 Participants
|
0 Participants
n=6 Participants
|
3 Participants
n=6 Participants
|
PRIMARY outcome
Timeframe: Baseline to 16 weeksPopulation: Analyzed sample with multiple imputation.
Minutes per day as measured by Stand UPTV app and activPAL
Outcome measures
| Measure |
CORE
n=10 Participants
Participants will receive a "core" intervention which will include a basic version of the StandUPTV app and a Fitbit watch.The Fitbit will provide device-based behavioral feedback through the StandUPTV self-monitoring component. SST feedback will be Self-monitoring will provide passive and objective feedback regarding SST behaviors and MVPA drawn from Fitbit and SCREENTIME sources. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
|
CORE + Text
n=9 Participants
CORE components + The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV app) that will provide simple adaptive content based upon length of most recent SST bout and time of day. These prompts will specifically target outcome expectations around SST and MVPA.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Context-based prompts: TEXT: The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV, not text message based) that will provide simple adaptive content. Content of the prompts will be educational (i.e., based on risks of sedentary screen time) and motivational (i.e., advice to reduce sedentary screen time).
|
CORE + Lockout
n=11 Participants
CORE components + Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the StandUPTV app will restrict screen time through the end of the week (Monday-Sunday). Participants will be provided with a planning tool for planning SST.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Sedentary Screen Time lockout: LOCKOUT The investigators will enforce a 50% per week reduction in SST, based upon a baseline week of observation. If SST reaches the prescribed threshold, the investigators will use the limits feature to restrict screen time through the end of the week (Monday-Sunday); at which point, 50% baseline allotment will be reinstated for an additional week.
|
CORE + Earn
n=15 Participants
CORE components + 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the investigators will use the limits from the StandUPTV app to restrict screen time through the end of the week (Monday-Sunday). Participants will be provided a planning tool for planning SST on a daily basis in order to reach their over 50% reduction goal.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. All participants will be provided a behavioral target of reducing their SST by 50% from their baseline.
EARN: Earn sedentary screen time through moderate-vigorous physical activity: EARN Participants assigned to the EARN component will earn SST by engaging in a \>5 min continuous bout of exercise (as defined by Fitbit minutes \>4 metabolic equivalents). They will earn SST on a 3:1 ratio up until they reach their baseline level of MVPA (5 mins of exercise earns 15 mins of SST). They will receive behavioral strategies to reduce screen time within the app (e.g., self-efficacy, barriers, exercising safely) and a planning tool for scheduling MVPA.
|
CORE + Text + Earn
n=14 Participants
Intervention components will be delivered as described in simpler factorial conditions.
App shows progress toward SST goal or if goal is exceeded. Can earn additional SST through exercise based on 3:1 ratio , simple adaptive content (by SST bout, time of day). Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week of observation.
|
CORE + Text + Lockout
n=13 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Simple adaptive content (by SST bout, time of day).
|
CORE + Earn + Lockout
n=7 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio.
|
CORE + Earn + Lockout + Text
n=15 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio). Simple adaptive content (by SST bout, time of day).
|
|---|---|---|---|---|---|---|---|---|
|
Changes in Sedentary Screen Time
|
-88.2 minutes per day
Interval -147.7 to -28.8
|
-60.1 minutes per day
Interval -113.0 to -7.2
|
-102.7 minutes per day
Interval -161.5 to -43.8
|
-118.1 minutes per day
Interval -163.0 to -73.1
|
-17.0 minutes per day
Interval -63.6 to 29.6
|
-72.8 minutes per day
Interval -122.9 to -22.6
|
-94.3 minutes per day
Interval -156.2 to -32.4
|
-125.7 minutes per day
Interval -172.0 to -79.3
|
SECONDARY outcome
Timeframe: Baseline to16 weeksPopulation: Analyzed sample with multiple imputation.
Changes in moderate to vigorous physical activity (minutes per day as measured by activPAL)
Outcome measures
| Measure |
CORE
n=10 Participants
Participants will receive a "core" intervention which will include a basic version of the StandUPTV app and a Fitbit watch.The Fitbit will provide device-based behavioral feedback through the StandUPTV self-monitoring component. SST feedback will be Self-monitoring will provide passive and objective feedback regarding SST behaviors and MVPA drawn from Fitbit and SCREENTIME sources. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
|
CORE + Text
n=9 Participants
CORE components + The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV app) that will provide simple adaptive content based upon length of most recent SST bout and time of day. These prompts will specifically target outcome expectations around SST and MVPA.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Context-based prompts: TEXT: The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV, not text message based) that will provide simple adaptive content. Content of the prompts will be educational (i.e., based on risks of sedentary screen time) and motivational (i.e., advice to reduce sedentary screen time).
|
CORE + Lockout
n=11 Participants
CORE components + Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the StandUPTV app will restrict screen time through the end of the week (Monday-Sunday). Participants will be provided with a planning tool for planning SST.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Sedentary Screen Time lockout: LOCKOUT The investigators will enforce a 50% per week reduction in SST, based upon a baseline week of observation. If SST reaches the prescribed threshold, the investigators will use the limits feature to restrict screen time through the end of the week (Monday-Sunday); at which point, 50% baseline allotment will be reinstated for an additional week.
|
CORE + Earn
n=15 Participants
CORE components + 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the investigators will use the limits from the StandUPTV app to restrict screen time through the end of the week (Monday-Sunday). Participants will be provided a planning tool for planning SST on a daily basis in order to reach their over 50% reduction goal.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. All participants will be provided a behavioral target of reducing their SST by 50% from their baseline.
EARN: Earn sedentary screen time through moderate-vigorous physical activity: EARN Participants assigned to the EARN component will earn SST by engaging in a \>5 min continuous bout of exercise (as defined by Fitbit minutes \>4 metabolic equivalents). They will earn SST on a 3:1 ratio up until they reach their baseline level of MVPA (5 mins of exercise earns 15 mins of SST). They will receive behavioral strategies to reduce screen time within the app (e.g., self-efficacy, barriers, exercising safely) and a planning tool for scheduling MVPA.
|
CORE + Text + Earn
n=14 Participants
Intervention components will be delivered as described in simpler factorial conditions.
App shows progress toward SST goal or if goal is exceeded. Can earn additional SST through exercise based on 3:1 ratio , simple adaptive content (by SST bout, time of day). Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week of observation.
|
CORE + Text + Lockout
n=13 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Simple adaptive content (by SST bout, time of day).
|
CORE + Earn + Lockout
n=7 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio.
|
CORE + Earn + Lockout + Text
n=15 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio). Simple adaptive content (by SST bout, time of day).
|
|---|---|---|---|---|---|---|---|---|
|
Changes in Moderate to Vigorous Physical Activity
|
-7.2 minutes per day
Interval -14.8 to 0.4
|
-0.1 minutes per day
Interval -7.2 to 6.9
|
1.0 minutes per day
Interval -6.2 to 8.2
|
-0.7 minutes per day
Interval -6.7 to 5.2
|
1.2 minutes per day
Interval -4.9 to 7.3
|
-15.6 minutes per day
Interval -22.4 to -8.8
|
1.5 minutes per day
Interval -7.6 to 10.6
|
0.3 minutes per day
Interval -5.8 to 6.3
|
SECONDARY outcome
Timeframe: Baseline to 16 weeksPopulation: Analyzed sample with multiple imputation.
Changes in time spent sitting (Minutes per day as measured by activPAL)
Outcome measures
| Measure |
CORE
n=10 Participants
Participants will receive a "core" intervention which will include a basic version of the StandUPTV app and a Fitbit watch.The Fitbit will provide device-based behavioral feedback through the StandUPTV self-monitoring component. SST feedback will be Self-monitoring will provide passive and objective feedback regarding SST behaviors and MVPA drawn from Fitbit and SCREENTIME sources. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
|
CORE + Text
n=9 Participants
CORE components + The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV app) that will provide simple adaptive content based upon length of most recent SST bout and time of day. These prompts will specifically target outcome expectations around SST and MVPA.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Context-based prompts: TEXT: The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV, not text message based) that will provide simple adaptive content. Content of the prompts will be educational (i.e., based on risks of sedentary screen time) and motivational (i.e., advice to reduce sedentary screen time).
|
CORE + Lockout
n=11 Participants
CORE components + Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the StandUPTV app will restrict screen time through the end of the week (Monday-Sunday). Participants will be provided with a planning tool for planning SST.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Sedentary Screen Time lockout: LOCKOUT The investigators will enforce a 50% per week reduction in SST, based upon a baseline week of observation. If SST reaches the prescribed threshold, the investigators will use the limits feature to restrict screen time through the end of the week (Monday-Sunday); at which point, 50% baseline allotment will be reinstated for an additional week.
|
CORE + Earn
n=15 Participants
CORE components + 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the investigators will use the limits from the StandUPTV app to restrict screen time through the end of the week (Monday-Sunday). Participants will be provided a planning tool for planning SST on a daily basis in order to reach their over 50% reduction goal.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. All participants will be provided a behavioral target of reducing their SST by 50% from their baseline.
EARN: Earn sedentary screen time through moderate-vigorous physical activity: EARN Participants assigned to the EARN component will earn SST by engaging in a \>5 min continuous bout of exercise (as defined by Fitbit minutes \>4 metabolic equivalents). They will earn SST on a 3:1 ratio up until they reach their baseline level of MVPA (5 mins of exercise earns 15 mins of SST). They will receive behavioral strategies to reduce screen time within the app (e.g., self-efficacy, barriers, exercising safely) and a planning tool for scheduling MVPA.
|
CORE + Text + Earn
n=14 Participants
Intervention components will be delivered as described in simpler factorial conditions.
App shows progress toward SST goal or if goal is exceeded. Can earn additional SST through exercise based on 3:1 ratio , simple adaptive content (by SST bout, time of day). Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week of observation.
|
CORE + Text + Lockout
n=13 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Simple adaptive content (by SST bout, time of day).
|
CORE + Earn + Lockout
n=7 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio.
|
CORE + Earn + Lockout + Text
n=15 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio). Simple adaptive content (by SST bout, time of day).
|
|---|---|---|---|---|---|---|---|---|
|
Changes in Time Spent Sitting
|
-29.7 minutes per day
Interval -84.5 to 25.1
|
-38.6 minutes per day
Interval -87.4 to 103.0
|
27.9 minutes per day
Interval -22.9 to 78.7
|
-8.2 minutes per day
Interval -49.2 to 32.8
|
-14.9 minutes per day
Interval -58.2 to 28.4
|
1.5 minutes per day
Interval -45.2 to 48.3
|
56.4 minutes per day
Interval -4.8 to 117.5
|
2.1 minutes per day
Interval -40.0 to 44.3
|
SECONDARY outcome
Timeframe: Baseline and 16 weeksPopulation: Analyzed sample with imputation
Changes in minutes per day of standing time as measured by activPAL
Outcome measures
| Measure |
CORE
n=10 Participants
Participants will receive a "core" intervention which will include a basic version of the StandUPTV app and a Fitbit watch.The Fitbit will provide device-based behavioral feedback through the StandUPTV self-monitoring component. SST feedback will be Self-monitoring will provide passive and objective feedback regarding SST behaviors and MVPA drawn from Fitbit and SCREENTIME sources. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
|
CORE + Text
n=9 Participants
CORE components + The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV app) that will provide simple adaptive content based upon length of most recent SST bout and time of day. These prompts will specifically target outcome expectations around SST and MVPA.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Context-based prompts: TEXT: The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV, not text message based) that will provide simple adaptive content. Content of the prompts will be educational (i.e., based on risks of sedentary screen time) and motivational (i.e., advice to reduce sedentary screen time).
|
CORE + Lockout
n=11 Participants
CORE components + Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the StandUPTV app will restrict screen time through the end of the week (Monday-Sunday). Participants will be provided with a planning tool for planning SST.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Sedentary Screen Time lockout: LOCKOUT The investigators will enforce a 50% per week reduction in SST, based upon a baseline week of observation. If SST reaches the prescribed threshold, the investigators will use the limits feature to restrict screen time through the end of the week (Monday-Sunday); at which point, 50% baseline allotment will be reinstated for an additional week.
|
CORE + Earn
n=15 Participants
CORE components + 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the investigators will use the limits from the StandUPTV app to restrict screen time through the end of the week (Monday-Sunday). Participants will be provided a planning tool for planning SST on a daily basis in order to reach their over 50% reduction goal.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. All participants will be provided a behavioral target of reducing their SST by 50% from their baseline.
EARN: Earn sedentary screen time through moderate-vigorous physical activity: EARN Participants assigned to the EARN component will earn SST by engaging in a \>5 min continuous bout of exercise (as defined by Fitbit minutes \>4 metabolic equivalents). They will earn SST on a 3:1 ratio up until they reach their baseline level of MVPA (5 mins of exercise earns 15 mins of SST). They will receive behavioral strategies to reduce screen time within the app (e.g., self-efficacy, barriers, exercising safely) and a planning tool for scheduling MVPA.
|
CORE + Text + Earn
n=14 Participants
Intervention components will be delivered as described in simpler factorial conditions.
App shows progress toward SST goal or if goal is exceeded. Can earn additional SST through exercise based on 3:1 ratio , simple adaptive content (by SST bout, time of day). Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week of observation.
|
CORE + Text + Lockout
n=13 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Simple adaptive content (by SST bout, time of day).
|
CORE + Earn + Lockout
n=7 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio.
|
CORE + Earn + Lockout + Text
n=15 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio). Simple adaptive content (by SST bout, time of day).
|
|---|---|---|---|---|---|---|---|---|
|
Changes in Time Spent Standing
|
-0.4 minutes per day
Interval -38.4 to 37.7
|
27.4 minutes per day
Interval -8.9 to 63.7
|
-15.7 minutes per day
Interval -49.8 to 18.5
|
-8.7 minutes per day
Interval -37.6 to 20.3
|
10.3 minutes per day
Interval -19.9 to 40.6
|
-2.8 minutes per day
Interval -38.2 to 32.5
|
-37.7 minutes per day
Interval -83.7 to 8.3
|
7.0 minutes per day
Interval -22.7 to 36.6
|
SECONDARY outcome
Timeframe: Baseline to 16 weeksPopulation: Analyzed sample with imputation
Minutes per day as measured by activPAL
Outcome measures
| Measure |
CORE
n=10 Participants
Participants will receive a "core" intervention which will include a basic version of the StandUPTV app and a Fitbit watch.The Fitbit will provide device-based behavioral feedback through the StandUPTV self-monitoring component. SST feedback will be Self-monitoring will provide passive and objective feedback regarding SST behaviors and MVPA drawn from Fitbit and SCREENTIME sources. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
|
CORE + Text
n=9 Participants
CORE components + The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV app) that will provide simple adaptive content based upon length of most recent SST bout and time of day. These prompts will specifically target outcome expectations around SST and MVPA.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Context-based prompts: TEXT: The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV, not text message based) that will provide simple adaptive content. Content of the prompts will be educational (i.e., based on risks of sedentary screen time) and motivational (i.e., advice to reduce sedentary screen time).
|
CORE + Lockout
n=11 Participants
CORE components + Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the StandUPTV app will restrict screen time through the end of the week (Monday-Sunday). Participants will be provided with a planning tool for planning SST.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.
Sedentary Screen Time lockout: LOCKOUT The investigators will enforce a 50% per week reduction in SST, based upon a baseline week of observation. If SST reaches the prescribed threshold, the investigators will use the limits feature to restrict screen time through the end of the week (Monday-Sunday); at which point, 50% baseline allotment will be reinstated for an additional week.
|
CORE + Earn
n=15 Participants
CORE components + 50% per week reduction in SST, based upon a baseline week. If SST reaches the prescribed threshold, the investigators will use the limits from the StandUPTV app to restrict screen time through the end of the week (Monday-Sunday). Participants will be provided a planning tool for planning SST on a daily basis in order to reach their over 50% reduction goal.
Device-based feedback, self-monitoring, and education: CORE: Participants will receive a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. All participants will be provided a behavioral target of reducing their SST by 50% from their baseline.
EARN: Earn sedentary screen time through moderate-vigorous physical activity: EARN Participants assigned to the EARN component will earn SST by engaging in a \>5 min continuous bout of exercise (as defined by Fitbit minutes \>4 metabolic equivalents). They will earn SST on a 3:1 ratio up until they reach their baseline level of MVPA (5 mins of exercise earns 15 mins of SST). They will receive behavioral strategies to reduce screen time within the app (e.g., self-efficacy, barriers, exercising safely) and a planning tool for scheduling MVPA.
|
CORE + Text + Earn
n=14 Participants
Intervention components will be delivered as described in simpler factorial conditions.
App shows progress toward SST goal or if goal is exceeded. Can earn additional SST through exercise based on 3:1 ratio , simple adaptive content (by SST bout, time of day). Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week of observation.
|
CORE + Text + Lockout
n=13 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Simple adaptive content (by SST bout, time of day).
|
CORE + Earn + Lockout
n=7 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio.
|
CORE + Earn + Lockout + Text
n=15 Participants
Intervention components will be delivered as described in simpler factorial conditions, and...
If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio). Simple adaptive content (by SST bout, time of day).
|
|---|---|---|---|---|---|---|---|---|
|
Changes in Time Spent Stepping
|
0.9 minutes per day
Interval -18.8 to 20.7
|
3.3 minutes per day
Interval -13.2 to 19.8
|
-0.2 minutes per day
Interval -16.7 to 16.4
|
-3.1 minutes per day
Interval -16.4 to 10.3
|
5.9 minutes per day
Interval -8.3 to 20.1
|
-12.0 minutes per day
Interval -28.4 to 4.5
|
-4.3 minutes per day
Interval -23.4 to 14.8
|
4.4 minutes per day
Interval -9.5 to 18.3
|
Adverse Events
CORE
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
CORE + Text
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
CORE + Lockout
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
CORE + Earn
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
CORE + Text + Earn
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
CORE + Text + Lockout
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
CORE + Earn + Lockout
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
CORE + Earn + Lockout + Text
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
Serious adverse events
Adverse event data not reported
Other adverse events
Adverse event data not reported
Additional Information
Matthew P Buman, PhD, Director & Professor
Arizona State University
Phone: 602-496-8617
Email: [email protected]
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place