Obesity, Overweight
Conditions
Keywords
Adolescent, Overweight, Obesity, Weight loss, Nutrition, Physical Activity, School-based, Primary care, Motivational Interviewing
Brief summary
Using a previously created weight management program for adolescents, the intervention will be implemented through school-based health centers (SBHC) and will be delivered by SBHC providers trained in Motivational Interviewing. Students at intervention school sites will be compared to students at control school sites. All students will have baseline, 1 year, and 2 year follow-up to assess if students in the intervention school sites will have improved risk factor profile for metabolic syndrome, improved nutrition and increased physical activity when compared with students at control school sites.
Interventions
School-based health center providers will use motivational interviewing to assist students with adopting strategies for improving nutrition and increasing physical activity. All participants will receive annual BMI and other health results discussion with clinical providers. Adolescents with overweight/obesity will meet with providers for 16 sessions over 2 years.
A letter containing BMI and other health results and obesity prevention recommendations will be sent to parent/guardians.
Sponsors
Study design
Eligibility
Inclusion criteria
* enrolled in 9th or 10th grade at participating schools
Exclusion criteria
* blood pressure in the range of stage 2 hypertension * previously diagnosed type 1 or type 2 diabetes * use of corticosteroids, antipsychotics, metformin, antihypertensive medications, and medications used for dyslipidemia * inability to perform moderate to vigorous physical activity * not ambulatory * a score of 20 or more on Eating Attitudes Test (EAT)-26 screening measure * developmental disorders that affect weight or ability to understand the study procedures or counseling
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Number and Proportion of Participants With Baseline BMI <85th Percentile Who Developed Overweight or Obesity by the End of the Study | Baseline to two years | Number and percentage of students who had a baseline BMI \<85th percentile who had a BMI\>= 85th percentile (overweight or obese) at endline |
| Change in Physical Activity | Baseline to two years | Change in minutes of moderate-to-vigorous physical activity as measured by accelerometer for participants who had a baseline BMI \<85th percentile and endline data |
| Change in Reported Added Sugar Intake | Baseline to two years | Reported change in added sugar intake as measured by the Block Kids Food Screener-Last Week for Ages 2-17 for students who had a baseline BMI \<85th percentile and endline data |
| Change in Reported Fruit, Vegetables, and Legume Intake (Not Including Potatoes) | Baseline to two years | Change in reported fruit, vegetables, and legume intake (not including potatoes) for students who had a baseline BMI \<85th percentile and endline data |
| Change in BMI Z-score | Baseline to two years | Change in body-mass index (BMI; weight in kilograms divided by the square of the body height in meters) Z-score for students who had a baseline BMI \>= 85th percentile (overweight or obese) and endline data. A Z-score of 0 represents the population mean. A Z-score above 2 indicates obesity (BMI \>2 standard deviations above the mean) in children and teens. A decline in BMI Z-score would be a positive outcome in this weight management study. |
| Change in HOMA-IR | Baseline to two years | Change in Homeostatic Model Assessment for Insulin Resistance (HOMA-IR; insulin resistance index) for students who had a baseline BMI \>= 85th percentile (overweight or obese) and endline data. HOMA-IR is calculated using the formula: (fasting glucose \[mg/dL\] x fasting insulin \[microU/mL\])/405. HOMA-IR values \>2 indicate insulin resistance. A decrease in HOMA-IR would be a positive outcome. |
Countries
United States
Participant flow
Recruitment details
Participants were enrolled from February 2014 to November 2015. Participants were recruited during general school registration events, the classes or practices of interested teachers, and lunch time.
Pre-assignment details
Teens were excluded based on assessments at the baseline visit: blood pressure in the range of stage 2 hypertension or a score of ≥20 on the Eating Attitudes Test.
Participants by arm
| Arm | Count |
|---|---|
| ACTION PAC School-based health center providers will use motivational interviewing to assist students with adopting strategies for improving nutrition and increasing physical activity. All participants will receive annual BMI and other health results discussion with clinical providers. Adolescents with overweight/obesity will meet with providers for 16 sessions over 2 years. A letter containing BMI and other health results and obesity prevention recommendations will be sent to parent/guardians. | 504 |
| Comparison A letter containing BMI and other health results and obesity prevention recommendations will be sent to parent/guardians. | 487 |
| Total | 991 |
Withdrawals & dropouts
| Period | Reason | FG000 | FG001 |
|---|---|---|---|
| Overall Study | Lost to Follow-up | 130 | 131 |
| Overall Study | Withdrawal by Subject | 31 | 24 |
Baseline characteristics
| Characteristic | ACTION PAC | Comparison | Total |
|---|---|---|---|
| Age, Continuous | 15.3 years STANDARD_DEVIATION 0.7 | 15.4 years STANDARD_DEVIATION 0.7 | 15.3 years STANDARD_DEVIATION 0.7 |
| Ethnicity (NIH/OMB) Hispanic or Latino | 451 Participants | 404 Participants | 855 Participants |
| Ethnicity (NIH/OMB) Not Hispanic or Latino | 53 Participants | 83 Participants | 136 Participants |
| Ethnicity (NIH/OMB) Unknown or Not Reported | 0 Participants | 0 Participants | 0 Participants |
| Region of Enrollment United States | 504 participants | 487 participants | 991 participants |
| Sex: Female, Male Female | 275 Participants | 268 Participants | 543 Participants |
| Sex: Female, Male Male | 229 Participants | 219 Participants | 448 Participants |
| Yearly household income <$20,000 | 192 Participants | 206 Participants | 398 Participants |
| Yearly household income $20,000-39,999 | 163 Participants | 126 Participants | 289 Participants |
| Yearly household income >=$40,000 | 132 Participants | 137 Participants | 269 Participants |
| Yearly household income Missing | 17 Participants | 18 Participants | 35 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk |
|---|---|---|
| deaths Total, all-cause mortality | 0 / 504 | 0 / 487 |
| other Total, other adverse events | 19 / 504 | 15 / 487 |
| serious Total, serious adverse events | 0 / 504 | 0 / 487 |
Outcome results
Change in BMI Z-score
Change in body-mass index (BMI; weight in kilograms divided by the square of the body height in meters) Z-score for students who had a baseline BMI \>= 85th percentile (overweight or obese) and endline data. A Z-score of 0 represents the population mean. A Z-score above 2 indicates obesity (BMI \>2 standard deviations above the mean) in children and teens. A decline in BMI Z-score would be a positive outcome in this weight management study.
Time frame: Baseline to two years
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| ACTION PAC | Change in BMI Z-score | 0.018 standard deviation units | Standard Deviation 0.302 |
| Comparison | Change in BMI Z-score | -0.047 standard deviation units | Standard Deviation 0.397 |
Change in HOMA-IR
Change in Homeostatic Model Assessment for Insulin Resistance (HOMA-IR; insulin resistance index) for students who had a baseline BMI \>= 85th percentile (overweight or obese) and endline data. HOMA-IR is calculated using the formula: (fasting glucose \[mg/dL\] x fasting insulin \[microU/mL\])/405. HOMA-IR values \>2 indicate insulin resistance. A decrease in HOMA-IR would be a positive outcome.
Time frame: Baseline to two years
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| ACTION PAC | Change in HOMA-IR | 0.613 index score units | Standard Deviation 5.842 |
| Comparison | Change in HOMA-IR | -0.236 index score units | Standard Deviation 2.976 |
Change in Physical Activity
Change in minutes of moderate-to-vigorous physical activity as measured by accelerometer for participants who had a baseline BMI \<85th percentile and endline data
Time frame: Baseline to two years
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| ACTION PAC | Change in Physical Activity | -14.5 minutes | Standard Deviation 31.3 |
| Comparison | Change in Physical Activity | -12.9 minutes | Standard Deviation 30.7 |
Change in Reported Added Sugar Intake
Reported change in added sugar intake as measured by the Block Kids Food Screener-Last Week for Ages 2-17 for students who had a baseline BMI \<85th percentile and endline data
Time frame: Baseline to two years
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| ACTION PAC | Change in Reported Added Sugar Intake | -1.9 teaspoons | Standard Deviation 7.8 |
| Comparison | Change in Reported Added Sugar Intake | -0.9 teaspoons | Standard Deviation 6.2 |
Change in Reported Fruit, Vegetables, and Legume Intake (Not Including Potatoes)
Change in reported fruit, vegetables, and legume intake (not including potatoes) for students who had a baseline BMI \<85th percentile and endline data
Time frame: Baseline to two years
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| ACTION PAC | Change in Reported Fruit, Vegetables, and Legume Intake (Not Including Potatoes) | -0.41 cups | Standard Deviation 1.42 |
| Comparison | Change in Reported Fruit, Vegetables, and Legume Intake (Not Including Potatoes) | -0.32 cups | Standard Deviation 1.46 |
Number and Proportion of Participants With Baseline BMI <85th Percentile Who Developed Overweight or Obesity by the End of the Study
Number and percentage of students who had a baseline BMI \<85th percentile who had a BMI\>= 85th percentile (overweight or obese) at endline
Time frame: Baseline to two years
Population: Students that had a baseline BMI \<85th percentile and who had endline data
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| ACTION PAC | Number and Proportion of Participants With Baseline BMI <85th Percentile Who Developed Overweight or Obesity by the End of the Study | 22 Participants |
| Comparison | Number and Proportion of Participants With Baseline BMI <85th Percentile Who Developed Overweight or Obesity by the End of the Study | 12 Participants |