Trial Outcomes & Findings for Summertime: Kids in Motion (NCT NCT03947918)
NCT ID: NCT03947918
Last Updated: 2025-04-25
Results Overview
Sleep duration will be measured with accelerometers.
TERMINATED
NA
34 participants
One week
2025-04-25
Participant Flow
Recruitment started on June 17, 2018 and ended March 9, 2020. Participants were recruited from local San Francisco nonprofit organizations, after school programs, local community events, a federally-qualified community health center and UCSF health clinics.
Participant milestones
| Measure |
Short Sleep
This condition required sleeping for less than 8 hours per night for one week.
|
Long Sleep
This condition required sleeping for more than 10 hours per night for one week.
|
|---|---|---|
|
Overall Study
STARTED
|
17
|
17
|
|
Overall Study
COMPLETED
|
16
|
14
|
|
Overall Study
NOT COMPLETED
|
1
|
3
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Summertime: Kids in Motion
Baseline characteristics by cohort
| Measure |
Short Sleep
n=16 Participants
No more than 8 hours of sleep for 4 consecutive nights.
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
Long Sleep
n=14 Participants
At least 10 hours of sleep for 4 consecutive nights
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
Total
n=30 Participants
Total of all reporting groups
|
|---|---|---|---|
|
Age, Categorical
<=18 years
|
16 Participants
n=5 Participants
|
14 Participants
n=7 Participants
|
30 Participants
n=5 Participants
|
|
Age, Categorical
Between 18 and 65 years
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
|
Age, Categorical
>=65 years
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
|
Age, Continuous
|
9.69 years
STANDARD_DEVIATION 1.09 • n=5 Participants
|
9.74 years
STANDARD_DEVIATION .70 • n=7 Participants
|
9.71 years
STANDARD_DEVIATION .92 • n=5 Participants
|
|
Sex: Female, Male
Female
|
9 Participants
n=5 Participants
|
8 Participants
n=7 Participants
|
17 Participants
n=5 Participants
|
|
Sex: Female, Male
Male
|
7 Participants
n=5 Participants
|
6 Participants
n=7 Participants
|
13 Participants
n=5 Participants
|
|
Ethnicity (NIH/OMB)
Hispanic or Latino
|
16 Participants
n=5 Participants
|
14 Participants
n=7 Participants
|
30 Participants
n=5 Participants
|
|
Ethnicity (NIH/OMB)
Not Hispanic or Latino
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
|
Ethnicity (NIH/OMB)
Unknown or Not Reported
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
|
Region of Enrollment
United States
|
16 participants
n=5 Participants
|
14 participants
n=7 Participants
|
30 participants
n=5 Participants
|
|
BMI z-score
|
1.57 BMI z-score: 0 is the population average
STANDARD_DEVIATION 1.28 • n=5 Participants
|
2.17 BMI z-score: 0 is the population average
STANDARD_DEVIATION 1.21 • n=7 Participants
|
1.83 BMI z-score: 0 is the population average
STANDARD_DEVIATION 1.26 • n=5 Participants
|
|
Sleep duration
|
9.69 hours per night
STANDARD_DEVIATION .73 • n=5 Participants
|
10.32 hours per night
STANDARD_DEVIATION 1.68 • n=7 Participants
|
9.99 hours per night
STANDARD_DEVIATION 1.28 • n=5 Participants
|
PRIMARY outcome
Timeframe: One weekSleep duration will be measured with accelerometers.
Outcome measures
| Measure |
Short Sleep
n=16 Participants
No more than 8 hours of sleep for 4 consecutive nights.
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
Long Sleep
n=14 Participants
At least 10 hours of sleep for 4 consecutive nights
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
|---|---|---|
|
Differences in Sleep Duration by Sleep Condition.
|
8.4 hours
Standard Deviation .8
|
8.9 hours
Standard Deviation .6
|
PRIMARY outcome
Timeframe: One weekPopulation: minutes of daily moderate to vigorous physical activity
Physical activity will be measured with accelerometers. Accelerometer data will be used to calculate moderate- to vigorous-intensity physical activity (MVPA; minutes). Activity counts were summed for each 24-hour period categorized into moderate to vigorous levels of physical activity according to the previously established thresholds. Moderate physical activity was set at 0.04 \< AEE \< 0.10 kcal.kg-1.min-1 or 3.0 \< PAR \< 6.0, reflective of medium exertion in the standing position. Vigorous physical activity was set at AEE \> 0.10 kcal.kg-1.min-1 or PAR \> 6.0, reflective of activities at a high level of exertion in the standing position. Moderate-intensity and vigorous-intensity physical activity were combined and expressed as minutes spent in MVPA.
Outcome measures
| Measure |
Short Sleep
n=16 Participants
No more than 8 hours of sleep for 4 consecutive nights.
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
Long Sleep
n=14 Participants
At least 10 hours of sleep for 4 consecutive nights
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
|---|---|---|
|
Differences in Physical Activity (Outcome) by Short and Long Sleep Condition.
|
27 minutes
Standard Deviation 20
|
30 minutes
Standard Deviation 17
|
PRIMARY outcome
Timeframe: One weekPopulation: average carbohydrate intake
Sleep duration will be measured with accelerometers. Eating/dietary intake (outcome) will be assessed on Thursdays and Fridays using 24-hour recalls using Nutrition Data System for Research. Sleep duration will be measured with accelerometers. Dietary intake (outcome) will be assessed on Thursdays and Fridays using 24-hour recalls using Nutrition Data System for Research. Daily sugar intake (grams) will be calculated.
Outcome measures
| Measure |
Short Sleep
n=16 Participants
No more than 8 hours of sleep for 4 consecutive nights.
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
Long Sleep
n=14 Participants
At least 10 hours of sleep for 4 consecutive nights
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
|---|---|---|
|
Differences in Carbohydrate Intake by Long and Short Sleep Condition.
|
1312 kcals
Standard Deviation 484
|
1526 kcals
Standard Deviation 871
|
PRIMARY outcome
Timeframe: One weekSleep duration will be measured with accelerometers. Eating/dietary intake (outcome) will be assessed on Thursdays and Fridays using 24-hour recalls using Nutrition Data System for Research. Sleep duration will be measured with accelerometers. Dietary intake (outcome) will be assessed on Thursdays and Fridays using 24-hour recalls using Nutrition Data System for Research. Daily sugar intake (grams) will be calculated.
Outcome measures
| Measure |
Short Sleep
n=16 Participants
No more than 8 hours of sleep for 4 consecutive nights.
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
Long Sleep
n=14 Participants
At least 10 hours of sleep for 4 consecutive nights
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
|---|---|---|
|
Differences in Added Sugar Intake by Long and Short Sleep Condition.
|
62 grams
Standard Deviation 38
|
65 grams
Standard Deviation 55
|
SECONDARY outcome
Timeframe: Baseline measurement (one time point)Population: Mothers' reported sleep.
Mothers' bedtimes and wakeup times will be assessed by self report.
Outcome measures
| Measure |
Short Sleep
n=16 Participants
No more than 8 hours of sleep for 4 consecutive nights.
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
Long Sleep
n=14 Participants
At least 10 hours of sleep for 4 consecutive nights
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
|---|---|---|
|
Maternal Sleep Duration
|
5.91 hours
Standard Deviation 2.15
|
7.56 hours
Standard Deviation 3.53
|
SECONDARY outcome
Timeframe: Baseline measurement (one time point)Population: Number of participants who watched TV in bed as a nighttime routine at least once per week.
Sleep hygiene will be assessed by whether the child shares a bed, shares a room and a bed, shares a room (but not a bed), or does not any. Child sleep schedule (bedtime) will be measured by parent report.
Outcome measures
| Measure |
Short Sleep
n=16 Participants
No more than 8 hours of sleep for 4 consecutive nights.
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
Long Sleep
n=14 Participants
At least 10 hours of sleep for 4 consecutive nights
Short sleep: Child will be asked to sleep for less than 8 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent daily text messages or phone call reminders.
Long sleep: Child will be asked to sleep for more than 10 hours. Study team will help parent design a sleep schedule for that week. Study team will send parent text messages or phone call reminders.
|
|---|---|---|
|
Sleep Hygiene Related to Children's Sleep Schedules.
|
7 Participants
|
9 Participants
|
Adverse Events
Short Sleep
Long Sleep
Serious adverse events
Adverse event data not reported
Other adverse events
Adverse event data not reported
Additional Information
Suzanna Martinez
University of California, San Francisco
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place