The Impact of an Acute Bout of Exercise on Children's Eating Behaviors
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 40
- 试验地点
- 1
- 主要终点
- Baseline energy intake
研究概览
简要总结
The purpose of this project is to examine the effects of an acute bout of exercise on children's energy intake over the course of a day. Previous studies in adolescents and adults have shown exercise to be effective in decreasing short-term energy intake, with some variability. Individual characteristics such as habitual physical activity and psychological factors may influence the effect of exercise on energy intake, but these factors have yet to be examined. The investigators have assembled a multi-disciplinary team of researchers, with expertise in eating behavior, exercise, psychology, and clinical research in order to examine these questions. First, the investigators will examine the difference in energy intake at lunch, snack, and dinner meals in response to 30 minutes of imposed exercise compared to 30 minutes of rest. Second, the investigators will collect objective measures of children's habitual physical activity, child characteristics (body composition, eating behavior traits), and individual responses to the controlled exercise bout. The investigators can then examine both group and individual differences in the energy intake response to exercise. Children (ages 9-12) will be tested over the course of three visits. The key outcome will be differences in energy intake in response to exercise vs. rest. Secondary outcomes include the influence of differences in habitual physical activity, personal characteristics, and responses to the exercise bout on children's energy intake. The long term goal of this line of research is to understand the mechanisms behind the interaction between exercise and energy intake. The translational potential of this research will be to inform personalized childhood obesity prevention strategies in children at risk for overweight.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 9 Years 至 12 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •English as a native language
- •Reading at/above grade level
- •Generally healthy
- •Child is "normal weight" below the 85% age- and sex-specific BMI percentile
- •Child has at least one biological parent classified as "overweight" or "obese" (≥ 25 kg/m^2)
- •Regularly eats breakfast
排除标准
- •Contraindications to exercise testing (as defined by the American College of Sports Medicine)
- •Medical conditions
- •Psychiatric conditions
- •Participation in competitive sports teams (year-round or more than 3 practices / week)
- •Food allergies or other dietary restrictions
结局指标
主要结局
Baseline energy intake
时间窗: Collected at week 1 of the study
Food intake is measured at objective laboratory test-meals as the difference between the pre-meal and post-meal weights of individual food items served. Weight of food is converted to energy in kilocalories based on nutrition facts label information.
Energy intake following exercise
时间窗: Collected at week 2 or 3 (randomized) of the study
Food intake is measured at objective laboratory test-meals as the difference between the pre-meal and post-meal weights of individual food items served. Weight of food is converted to energy in kilocalories based on nutrition facts label information.
Energy intake following sedentary control
时间窗: Collected at week 2 or 3 (randomized) of the study
Food intake is measured at objective laboratory test-meals as the difference between the pre-meal and post-meal weights of individual food items served. Weight of food is converted to energy in kilocalories based on nutrition facts label information.
Activity-related energy expenditure - Baseline day
时间窗: Collected in the laboratory at week 1, 2, and 3, and at home for one week between the 2nd and 3rd laboratory visits
Measured using ActiGraph accelerometers
Activity-related energy expenditure - Exercise day
时间窗: Collected at week 2 or 3 (randomized) of the study
Measured using ActiGraph accelerometers
Activity-related energy expenditure - Sedentary control day
时间窗: Collected at week 2 or 3 (randomized) of the study
Measured using ActiGraph accelerometers
次要结局
- Baseline submaximal fitness test performance(Collected at week 1 of the study)
- Child physical activity patterns(Collected at home for one week between the 2nd and 3rd laboratory visits)
- Exercise test performance (70% intensity) - Blood pressure(Collected at week 2 or 3 (randomized) of the study)
- Exercise test performance (70% intensity) - Completion(Collected at week 2 or 3 (randomized) of the study)
- Exercise test performance (70% intensity) - Heart rate(Collected at week 2 or 3 (randomized) of the study)
- Exercise test performance (70% intensity) - Ratings of perceived exertion(Collected at week 2 or 3 (randomized) of the study)
- Child sleep patterns(Collected at home for one week between the 2nd and 3rd laboratory visits)
研究者
Kathleen Loralee Keller
Assistant Professor
Penn State University