Activity, Adiposity, and Appetite in Adolescents 2 Intervention (AAAA2 INT)
Obesity, Energy Balance, Appetite
About this trial
This is an interventional prevention trial for Obesity
Eligibility Criteria
Inclusion Criteria:
- Tanner Stage III-V
- Weight-stable (± 10%) within the previous 3 months
- Non-smoking
- Not currently involved in any other research study
Exclusion Criteria:
- Restrained eater (>13) on the restraint section of the three-factor eating questionnaire; Current/past diagnosis of an eating disorder
- Past pregnancy
- Self-reported medical conditions (diabetes, Crohn's disease, etc.) that may affect adherence to the protocol or exercising safely or alter metabolism
- Medications known to affect exercise performance or metabolism (e.g. thyroid medication, beta-blockers, or stimulants)
Sites / Locations
- Children's Mercy Kansas CityRecruiting
Arms of the Study
Arm 1
Arm 2
Experimental
Active Comparator
Structured exercise
Newsletter control
Adolescents randomized to the exercise will participate in a supervised structured exercise program (walking on a treadmill, cycling on a stationary bicycle, etc.) and expend an equivalent of 400 kcals/session (approximately 45-60 min/session) on three days/week. We will follow the protocol of Mentor Dr. Joseph Donnelly, with exercise prescriptions progressing from 150 kcal/session at intervention onset to reach the target exercise energy expenditure (EEEx) (400 kcal/session) at the end of month 3. EEEx will be assessed at baseline and monthly during the intervention to determine the duration of treadmill exercise required to achieve the EEEx goals. All supervised exercise will occur at the CCHLN on a treadmill with heart rate, speed, and grade monitored by an exercise specialist every five minutes.
Adolescents randomized to the newsletter control will receive with biweekly newsletters with "parenting tips, sample praise statements, and age-appropriate activities and recipes" identical to what has been used by others (Epstein et al., 2008), including existing group-based interventions with overweight/obese adolescents.