Pilot Data Collection for Activity, Adiposity, and Appetite in Adolescents
- Conditions
- Physical ActivitySedentary LifestyleMetabolismEnergy Balance
- Interventions
- Diagnostic Test: Data Collection Procedures
- Registration Number
- NCT03157063
- Lead Sponsor
- Children's Mercy Hospital Kansas City
- Brief Summary
The goal of this study is to quantify energy metabolism using indirect calorimetry at rest, in the presence of excess energy following a meal, and in response to the demand for energy during exercise. The investigators also will examine the individual and joint associations of activity and obesity status on neurocognitive domains of appetite control. Participants will include adolescent males and females (N=80) using a 2 x 2 cross-sectional study design, stratified by body weight (normal vs overweight/obese) and physical activity level (sedentary vs. active).
- Detailed Description
The investigators hypothesize that low levels of fitness and MVPA result in impaired metabolic function in adolescents. For this pilot study, the investigators will quantify variations in metabolic characteristics using a 2 x 2 cross-sectional study design, stratified by body weight (normal vs overweight/obese) and physical activity (sedentary vs. active). The goal is to identify metabolic factors that influence the energy balance system to directly inform interventions designed to prevent or reduce the prevalence of pediatric obesity.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- Male
- Target Recruitment
- 64
- Males (Tanner Stage III-IV), ages 14-18
- Weight stable (5% weight change) over the previous three months as assessed by self-report.
- BMI greater than 5th and less than 99th percentile
- Physically healthy for exercise as assessed by self report Physical Activity Readiness Questionnaire (PAR-Q) for children.
- For fMRI testing, all participants must be right handed and must have normal or corrected to normal vision (as they will be viewing pictures in the fMRI procedure).
- History of restrained eating, eating disorders, bariatric surgery, or other significant medical diagnosis that could impact metabolism.
- Participants taking thyroid medications, beta blockers, or other stimulants (medications are known to affect physical activity level and metabolism).
- Due to fMRI procedure requirements, children with a history of Attention Deficit Hyperactivity Disorder (ADHD) or other diagnosed psychiatric issues will be excluded.
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Arm && Interventions
Group Intervention Description Inactive, normal weight Data Collection Procedures Less than 30 minutes per day of moderate to vigorous physical activity (MVPA), and body mass index percentile (BMI%) between 5th to 75th percentile. Active, normal weight Data Collection Procedures More than 60 minutes per day MVPA, BMI% between 5th and 75th. Active, overweight/obese Data Collection Procedures More than 60 minutes per day MVPA, BMI% between 85th and 99th. Inactive, overweight/obese Data Collection Procedures Less than 30 minutes per day MVPA, BMI% between 85th and 99th.
- Primary Outcome Measures
Name Time Method The independent effects of physical inactivity and obesity on metabolic responses (energy expenditure) at rest, after a meal, and during exercise using indirect calorimetry. 1 year The investigators will measure energy expenditure at rest (also called resting metabolic rate), following a fixed-calorie meal (also called thermic effect of feeding), and during submaximal walking on a treadmill, all using an indirect calorimeter.
- Secondary Outcome Measures
Name Time Method Physical activity levels, as measured by subjective appetite ratings and hormones related to appetite, independent of obesity status. 2 years The investigators will measure subjective appetite ratings related to hunger, fullness, etc. using visual analog scales and hormones related to appetite control following a fixed-calorie meal and buffet-style meal.
Trial Locations
- Locations (1)
Children's Mercy Kansas City
🇺🇸Kansas City, Missouri, United States