Trial Outcomes & Findings for Sedentary Behavior Interrupted Randomized Controlled Trial (P2) (NCT NCT03473145)

NCT ID: NCT03473145

Last Updated: 2025-11-03

Results Overview

Mean Insulin (mU/L) collected via fasting blood draw at Baseline and 3-Months

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

407 participants

Primary outcome timeframe

3 months

Results posted on

2025-11-03

Participant Flow

Participant milestones

Participant milestones
Measure
Health Living Attention Control
Participants in the attention control condition will receive a healthy aging educational intervention. This group will receive one in-person health coaching sessions and 6 phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention.
Reduce Sitting
Participants in the Reduce Sitting condition will receive an intervention aimed at reducing daily sitting time. This group will receive five in-person health coaching sessions and two phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention. activPAL inclinometer: Participants in the intervention study arms (B \& C) will wear the ActivPAL device for the first 4 weeks of the program and then again in weeks 8 and 9. The device will monitor their sitting and standing time and will allow Health Coaches to provide feedback and will assist the participant in developing an action plan. Tools to Prompt Standing or Prompt Sit-to-Stand Transitions.: Participants in the intervention study arms (B \& C) will receive tools to prompt standing or sit-to-stand transitions such as wearable wrist devices, standing desks or tables (Group B only), mechanical and/or electronic timers, or access to mobile apps or computer programs.
Sit-to-Stand Transition
Participants in the Sit-to-Stand Transition condition will receive an intervention aimed at increasing the daily number of brief sit-to-stand transitions. This group will receive five in-person health coaching sessions and two phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention. activPAL inclinometer: Participants in the intervention study arms (B \& C) will wear the ActivPAL device for the first 4 weeks of the program and then again in weeks 8 and 9. The device will monitor their sitting and standing time and will allow Health Coaches to provide feedback and will assist the participant in developing an action plan. Tools to Prompt Standing or Prompt Sit-to-Stand Transitions.: Participants in the intervention study arms (B \& C) will receive tools to prompt standing or sit-to-stand transitions such as wearable wrist devices, standing desks or tables (Group B only), mechanical and/or electronic timers, or access to mobile apps or computer programs.
Overall Study
STARTED
135
136
136
Overall Study
COMPLETED
130
130
128
Overall Study
NOT COMPLETED
5
6
8

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Sedentary Behavior Interrupted Randomized Controlled Trial (P2)

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Reduce Sitting
n=136 Participants
Participants in the Reduce Sitting condition will receive an intervention aimed at reducing daily sitting time. This group will receive five in-person health coaching sessions and two phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention. activPAL inclinometer: Participants in the intervention study arms (B \& C) will wear the ActivPAL device for the first 4 weeks of the program and then again in weeks 8 and 9. The device will monitor their sitting and standing time and will allow Health Coaches to provide feedback and will assist the participant in developing an action plan. Tools to Prompt Standing or Prompt Sit-to-Stand Transitions.: Participants in the intervention study arms (B \& C) will receive tools to prompt standing or sit-to-stand transitions such as wearable wrist devices, standing desks or tables (Group B only), mechanical and/or electronic timers, or access to mobile apps or computer programs.
Sit-to-Stand Transition
n=136 Participants
Participants in the Sit-to-Stand Transition condition will receive an intervention aimed at increasing the daily number of brief sit-to-stand transitions. This group will receive five in-person health coaching sessions and two phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention. activPAL inclinometer: Participants in the intervention study arms (B \& C) will wear the ActivPAL device for the first 4 weeks of the program and then again in weeks 8 and 9. The device will monitor their sitting and standing time and will allow Health Coaches to provide feedback and will assist the participant in developing an action plan. Tools to Prompt Standing or Prompt Sit-to-Stand Transitions.: Participants in the intervention study arms (B \& C) will receive tools to prompt standing or sit-to-stand transitions such as wearable wrist devices, standing desks or tables (Group B only), mechanical and/or electronic timers, or access to mobile apps or computer programs.
Total
n=407 Participants
Total of all reporting groups
Health Living Attention Control
n=135 Participants
Participants in the attention control condition will receive a healthy aging educational intervention. This group will receive one in-person health coaching sessions and 6 phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention.
Age, Continuous
68.39 years
STANDARD_DEVIATION 4.66 • n=15 Participants
67.29 years
STANDARD_DEVIATION 6.55 • n=18 Participants
67.81 years
STANDARD_DEVIATION 32.13 • n=4 Participants
67.76 years
STANDARD_DEVIATION 7.43 • n=3 Participants
Sex: Female, Male
Female
136 Participants
n=15 Participants
136 Participants
n=18 Participants
407 Participants
n=4 Participants
135 Participants
n=3 Participants
Sex: Female, Male
Male
0 Participants
n=15 Participants
0 Participants
n=18 Participants
0 Participants
n=4 Participants
0 Participants
n=3 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
13 Participants
n=15 Participants
10 Participants
n=18 Participants
35 Participants
n=4 Participants
12 Participants
n=3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
123 Participants
n=15 Participants
124 Participants
n=18 Participants
370 Participants
n=4 Participants
123 Participants
n=3 Participants
Race (NIH/OMB)
More than one race
2 Participants
n=15 Participants
1 Participants
n=18 Participants
5 Participants
n=4 Participants
2 Participants
n=3 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants
n=15 Participants
0 Participants
n=18 Participants
4 Participants
n=4 Participants
2 Participants
n=3 Participants
Region of Enrollment
United States
136 participants
n=15 Participants
136 participants
n=18 Participants
407 participants
n=4 Participants
135 participants
n=3 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=15 Participants
2 Participants
n=18 Participants
2 Participants
n=4 Participants
0 Participants
n=3 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=15 Participants
1 Participants
n=18 Participants
2 Participants
n=4 Participants
1 Participants
n=3 Participants
Race (NIH/OMB)
Asian
2 Participants
n=15 Participants
5 Participants
n=18 Participants
10 Participants
n=4 Participants
3 Participants
n=3 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=15 Participants
0 Participants
n=18 Participants
0 Participants
n=4 Participants
0 Participants
n=3 Participants
Race (NIH/OMB)
Black or African American
4 Participants
n=15 Participants
4 Participants
n=18 Participants
15 Participants
n=4 Participants
7 Participants
n=3 Participants
Race (NIH/OMB)
White
126 Participants
n=15 Participants
125 Participants
n=18 Participants
371 Participants
n=4 Participants
120 Participants
n=3 Participants

PRIMARY outcome

Timeframe: 3 months

Mean Insulin (mU/L) collected via fasting blood draw at Baseline and 3-Months

Outcome measures

Outcome measures
Measure
Health Living Attention Control
n=131 Participants
Participants in the attention control condition will receive a healthy aging educational intervention. This group will receive one in-person health coaching sessions and 6 phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention.
Reduce Sitting
n=133 Participants
Participants in the Reduce Sitting condition will receive an intervention aimed at reducing daily sitting time. This group will receive five in-person health coaching sessions and two phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention. activPAL inclinometer: Participants in the intervention study arms (B \& C) will wear the ActivPAL device for the first 4 weeks of the program and then again in weeks 8 and 9. The device will monitor their sitting and standing time and will allow Health Coaches to provide feedback and will assist the participant in developing an action plan. Tools to Prompt Standing or Prompt Sit-to-Stand Transitions.: Participants in the intervention study arms (B \& C) will receive tools to prompt standing or sit-to-stand transitions such as wearable wrist devices, standing desks or tables (Group B only), mechanical and/or electronic timers, or access to mobile apps or computer programs.
Sit-to-Stand Transition
n=135 Participants
Participants in the Sit-to-Stand Transition condition will receive an intervention aimed at increasing the daily number of brief sit-to-stand transitions. This group will receive five in-person health coaching sessions and two phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention. activPAL inclinometer: Participants in the intervention study arms (B \& C) will wear the ActivPAL device for the first 4 weeks of the program and then again in weeks 8 and 9. The device will monitor their sitting and standing time and will allow Health Coaches to provide feedback and will assist the participant in developing an action plan. Tools to Prompt Standing or Prompt Sit-to-Stand Transitions.: Participants in the intervention study arms (B \& C) will receive tools to prompt standing or sit-to-stand transitions such as wearable wrist devices, standing desks or tables (Group B only), mechanical and/or electronic timers, or access to mobile apps or computer programs.
Insulin Regulation (mU/L)
Baseline Mean
15.93 mU/L
Interval 14.25 to 17.62
15.68 mU/L
Interval 14.03 to 17.33
15.27 mU/L
Interval 13.68 to 16.86
Insulin Regulation (mU/L)
3-Month Mean
16.72 mU/L
Interval 14.94 to 18.51
15.85 mU/L
Interval 14.17 to 17.53
14.84 mU/L
Interval 13.26 to 16.41

SECONDARY outcome

Timeframe: 3 months

Self-reported physical functioning was assessed using the Rand SF 36-Item Health Survey that assesses 8 health concepts: physical functioning, bodily pain, role limitations due to physical health problems, role limitations due to personal or emotional problems, emotional well-being, social functioning, energy/fatigue, and general health perceptions. The range of scores is 0 - 100 with higher scores meaning better physical functioning.

Outcome measures

Outcome measures
Measure
Health Living Attention Control
n=135 Participants
Participants in the attention control condition will receive a healthy aging educational intervention. This group will receive one in-person health coaching sessions and 6 phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention.
Reduce Sitting
n=136 Participants
Participants in the Reduce Sitting condition will receive an intervention aimed at reducing daily sitting time. This group will receive five in-person health coaching sessions and two phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention. activPAL inclinometer: Participants in the intervention study arms (B \& C) will wear the ActivPAL device for the first 4 weeks of the program and then again in weeks 8 and 9. The device will monitor their sitting and standing time and will allow Health Coaches to provide feedback and will assist the participant in developing an action plan. Tools to Prompt Standing or Prompt Sit-to-Stand Transitions.: Participants in the intervention study arms (B \& C) will receive tools to prompt standing or sit-to-stand transitions such as wearable wrist devices, standing desks or tables (Group B only), mechanical and/or electronic timers, or access to mobile apps or computer programs.
Sit-to-Stand Transition
n=136 Participants
Participants in the Sit-to-Stand Transition condition will receive an intervention aimed at increasing the daily number of brief sit-to-stand transitions. This group will receive five in-person health coaching sessions and two phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention. activPAL inclinometer: Participants in the intervention study arms (B \& C) will wear the ActivPAL device for the first 4 weeks of the program and then again in weeks 8 and 9. The device will monitor their sitting and standing time and will allow Health Coaches to provide feedback and will assist the participant in developing an action plan. Tools to Prompt Standing or Prompt Sit-to-Stand Transitions.: Participants in the intervention study arms (B \& C) will receive tools to prompt standing or sit-to-stand transitions such as wearable wrist devices, standing desks or tables (Group B only), mechanical and/or electronic timers, or access to mobile apps or computer programs.
Self-Reported Physical Functioning
Baseline Mean
74.9 score on a scale
Standard Error 1.81
72.8 score on a scale
Standard Error 1.81
75.8 score on a scale
Standard Error 1.81
Self-Reported Physical Functioning
3-Months Mean
75.9 score on a scale
Standard Error 1.83
74.6 score on a scale
Standard Error 1.83
80.5 score on a scale
Standard Error 1.84

Adverse Events

Health Living Attention Control

Serious events: 0 serious events
Other events: 8 other events
Deaths: 0 deaths

Reduce Sitting

Serious events: 0 serious events
Other events: 28 other events
Deaths: 0 deaths

Sit-to-Stand Transition

Serious events: 0 serious events
Other events: 26 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Health Living Attention Control
n=135 participants at risk
Participants in the attention control condition will receive a healthy aging educational intervention. This group will receive one in-person health coaching sessions and 6 phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention.
Reduce Sitting
n=136 participants at risk
Participants in the Reduce Sitting condition will receive an intervention aimed at reducing daily sitting time. This group will receive five in-person health coaching sessions and two phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention. activPAL inclinometer: Participants in the intervention study arms (B \& C) will wear the ActivPAL device for the first 4 weeks of the program and then again in weeks 8 and 9. The device will monitor their sitting and standing time and will allow Health Coaches to provide feedback and will assist the participant in developing an action plan. Tools to Prompt Standing or Prompt Sit-to-Stand Transitions.: Participants in the intervention study arms (B \& C) will receive tools to prompt standing or sit-to-stand transitions such as wearable wrist devices, standing desks or tables (Group B only), mechanical and/or electronic timers, or access to mobile apps or computer programs.
Sit-to-Stand Transition
n=136 participants at risk
Participants in the Sit-to-Stand Transition condition will receive an intervention aimed at increasing the daily number of brief sit-to-stand transitions. This group will receive five in-person health coaching sessions and two phone counseling sessions. Health Coaching: Health Coaching sessions will be aimed at goal setting, implementing strategies, overcoming barriers, \& relapse prevention. activPAL inclinometer: Participants in the intervention study arms (B \& C) will wear the ActivPAL device for the first 4 weeks of the program and then again in weeks 8 and 9. The device will monitor their sitting and standing time and will allow Health Coaches to provide feedback and will assist the participant in developing an action plan. Tools to Prompt Standing or Prompt Sit-to-Stand Transitions.: Participants in the intervention study arms (B \& C) will receive tools to prompt standing or sit-to-stand transitions such as wearable wrist devices, standing desks or tables (Group B only), mechanical and/or electronic timers, or access to mobile apps or computer programs.
Skin and subcutaneous tissue disorders
Skin Irritation
5.9%
8/135 • Number of events 9 • Adverse event data were collected while the participants were active in the study for 3-months.
11.8%
16/136 • Number of events 16 • Adverse event data were collected while the participants were active in the study for 3-months.
13.2%
18/136 • Number of events 18 • Adverse event data were collected while the participants were active in the study for 3-months.
Musculoskeletal and connective tissue disorders
Pain
0.00%
0/135 • Adverse event data were collected while the participants were active in the study for 3-months.
8.8%
12/136 • Number of events 12 • Adverse event data were collected while the participants were active in the study for 3-months.
5.9%
8/136 • Number of events 8 • Adverse event data were collected while the participants were active in the study for 3-months.

Additional Information

Sheri Hartman

UC San Diego

Phone: (858) 534-9235

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place