Shape Up Kids Fitness Ancillary

Study Overview
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Brief Summary
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The overall objective of this study is to quantify the decision-making process and underlying biases around leisure activity behaviors using the Activity Preference Assessment (APA), a novel psychological task. The investigators plan to validate the APA against objectively measured sedentary and physical activity time, and examine its potential to predict health-related outcomes in children and adolescents. The Shape Up Kids Fitness Ancillary protocol will add exercise testing, cognitive and behavioral measures, accelerometry, and questionnaires to the existing Shape Up Kids primary study dataset.

Detailed Description
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The investigators will enroll 60 boys and girls (50% female) between the ages of 8-17 years into this pilot and feasibility ancillary study. The aims of this study are to validate and test the reliability of the Activity Preference Assessment (APA), as described below. Aim 1: To examine the convergent validity of the APA against habitual physical and sedentary activity time measured objectively by seven days of accelerometry, as well as leisure activity choices during a 30-minute free-choice play period. Aim 2: To examine the criterion validity of the APA against concurrent measures of body composition, cardiometabolic health indicators, aerobic fitness, and physical strength. Aim 3: To measure the test-retest reliability of APA outcomes through repeated measures separated by approximately one week. Exploratory Aim: To investigate patterns or clusters of activity preferences through exploratory factor analysis of activity liking VAS scores.

Official Title
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Validity and Reliability of the Activity Preference Assessment: A Shape Up Kids Ancillary

Conditions
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Childhood Obesity

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Eligible for the Shape Up Kids primary study Height ≥ 4 feet 8 inches Body weight < 350 lbs Exclusion Criteria: American College of Sports Medicine (ACSM) contraindications to exercise testing (i.e., medical history of cardiovascular or pulmonary conditions, physical conditions that affect the ability to exercise)

Ages Eligible for Study
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Minimum Age: 8 Years
Maximum Age: 17 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time 1 APA bias scores | Bias scores are calculated from reaction times and choices made during the forced-choice section of the APA. Scores range from -100 to +100, with negative scores indicating a bias towards physical activities, and positive scores indicating a bias towards sedentary activities. | Day 0 / Primary Study Visit | 
| Time 2 APA bias scores | Bias scores are calculated from reaction times and choices made during the forced-choice section of the APA. Scores range from -100 to +100, with negative scores indicating a bias towards physical activities, and positive scores indicating a bias towards sedentary activities. | 8-21 days after Primary Study Visit | 
| Habitual physical and sedentary activity | Physical and sedentary activity time are measured for 24 hours per day over 7 consecutive days, including 2 weekend days, using ActiGraph GT3X+ accelerometers worn on the left mid-axillary line. | 7 days between visits | 
| Free-choice play period | Children will have 30 minutes to play freely in a room with a variety of sedentary and physical activity choices. Trained observers will record children's activity every 15 seconds. | 8-21 days after Primary Study Visit | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Cardiorespiratory fitness | Cardiorespiratory fitness, or VO2peak in mL/kg/min, is measured using a graded cycle ergometer test to volitional fatigue. | 8-21 days after Primary Study Visit | 
| Body composition 1 | In the Shape Up Kids primary study, body composition is measured using bioelectrical impedance analysis (BIA). | Day 0 / Primary Study Visit | 
| Body composition 2 | In the Shape Up Kids primary study, body composition is measured using whole-body dual-energy x-ray absorptiometry (DXA). | Day 0 / Primary Study Visit | 
| Body composition 3 | In the Shape Up Kids primary study, body composition is measured using whole-body magnetic resonance imaging (MRI). | Day 0 / Primary Study Visit | 
| Physical strength | In the Shape Up Kids primary study, physical strength is assessed with dynamometers. | Day 0 / Primary Study Visit | 
| Resting blood pressure | In the Shape Up Kids primary study, blood pressure is assessed after 5 minutes of rest. | Day 0 / Primary Study Visit | 
| Resting heart rate | In the Shape Up Kids primary study, heart rate is assessed after 5 minutes of rest. | Day 0 / Primary Study Visit | 
| Cardiometabolic disease biomarkers | In the Shape Up Kids primary study, fasting levels of lipid, glucose, and inflammatory biomarkers are assessed via blood draw with a single Chem 26 assay panel. | Day 0 / Primary Study Visit | 
| Time 1 activity liking and wanting Visual Analog Scale (VAS) scores | Participants will rate how much they like to do and want to do each of the activities included in the APA on VAS that range from 0 or Not at all to 100 or Like/Want very much | Day 0 / Primary Study Visit | 
| Time 2 activity liking and wanting VAS scores | Participants will rate how much they like to do and want to do each of the activities included in the APA on VAS that range from 0 or Not at all to 100 or Like/Want very much | 8-21 days after Primary Study Visit | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Cardiorespiratory fitness, Sedentary behavior, Physical activity, Decision-making, Cardiometabolic risk factors