Comparison of Fasted vs. Carbohydrate and Protein Breakfast on Exercise Metabolism and Rest of the Day Energy Intake
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 10
- 试验地点
- 2
- 主要终点
- Change in energy expenditure
研究概览
简要总结
Exercising in the fasted state results in greater fat oxidation during exercise and results in decreased caloric intake in the meals after exercise. However, the studies that examine fasted vs. fed exercise utilize a carbohydrate-based breakfast, which can increase blood glucose and insulin concentrations, which is considered a negative consequence. A protein breakfast, which can increase satiety and rest of day energy intake could also increase resting energy expenditure as well as fat oxidation during exercise. However, comparisons between fasting exercise and pre-exercise breakfast macronutrient intake (i.e., carbohydrate vs. protein) have not been made. Therefore the purpose of this study is to investigate if eating breakfast and the composition of this breakfast before exercise has an effect on the food eaten throughout the rest of the day.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 45 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •18-45 years old
- •regularly participate in exercise for at least 150 min per week
- •run at least 3 days per week for 30 minutes
- •able to complete a VO2max test
- •able to exercise for 45 min moderate intensity exercise at one time without breaks
排除标准
- •not participating in structured exercise of 150 min/week for the past 6 months
- •not running at least 3 days per week for 30 minutes
- •not attaining a VO2max of 50 ml/kg/min (60th percentile fitness classification according to the American College of Sports Medicine)
- •currently smoke or quit smoking less than one year ago.
- •diagnosed with or are being treated for a cardiovascular disease, high blood pressure, fibromyalgia, irritable bowel syndrome or a metabolic disorder such as diabetes, thyroid disorder, or high cholesterol.
- •food allergies or sensitivities.
- •not willing to have blood drawn on 4 occasions during each trial (16 total times)
结局指标
主要结局
Change in energy expenditure
时间窗: immediately pre-breakfast, immediately post-breakfast, immediately pre-exercise, and immediately post-exercise
Measured via indirect calorimetry
Change in lunch energy intake
时间窗: 60 min post-exercise
measured via standardized lunch buffet
Change in subjective hunger
时间窗: baseline, immediately pre-breakfast, immediately post-breakfast, immediately post-exercise, immediately pre-lunch, immediately post-lunch, immediately pre-dinner, and immediately post-dinner
measured via 100mm visual analogue scale, higher scores indicate greater hunger
Change in appetite
时间窗: immediately pre-breakfast, immediately post-breakfast, immediately post-exercise, and immediately pre-lunch
measured via circulating hormones
Change in blood glucose
时间窗: immediately pre-breakfast, immediately post-breakfast, immediately post-exercise, immediately pre-lunch, and immediately pre-dinner
measured via fingerstick blood assessment
Change in dinner energy intake
时间窗: Day 1 (trial 1); between Days 6 and 8 (trial 2); between Days 11 and 15 (trial 3); and between Days 16 and 22 (trial 4)
weight of food returned the following day
次要结局
未报告次要终点
研究者
Angela Hillman
Assistant Professor, Exercise Physiology
Ohio University