EFFECTS OF ANAEROBIC RESISTANCE EXERCISE ON THE UTILIZATION OF DIETARY FAT

本子项目是利用由NIH/NCRR资助的中心赠款提供的资源的众多研究子项目之一。子项目和研究者（PI）可能已经从另一个NIH来源获得了主要资金，因此可以在其他CRISP条目中表示。列出的机构是中心的，不一定是研究者的机构。我们的研究表明，早上进行有氧运动可以增加运动结束后的早餐、午餐或晚餐中脂肪的氧化。然而，许多人更喜欢阻力训练，使用重量或其他形式的阻力进行有氧运动。因此，我们开始了这项研究，以比较一次举重和一次有氧运动（骑自行车）的效果，它们燃烧的卡路里数量相同。研究对象进行了1小时的举重，1小时的适度自行车运动或1小时的坐着阅读。每次运动比同一时段的休息多消耗150千卡热量。我们测量了他们在运动后从早餐中燃烧脂肪卡路里的速度。在运动结束后的一顿饭中摄入的膳食脂肪的氧化增加了大约四分之一，举重运动和骑自行车运动的增加幅度相似。因此，举重确实增加了膳食脂肪的燃烧量，这减少了餐后12小时内脂肪储存的量。举重和有氧运动的效果大致相同。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Our research has shown that aerobic exercise performed in the morning increases the oxidation of fat in a breakfast, lunch or dinner that is eaten during the day after completion of the exercise. Many individuals, however, prefer resistance training, using weights or other forms of resistance to aerobic exercise. We have therefore begun this study to compare the effects of a single bout of weight lifting with a bout of aerobic (bicycle) exercise that burns the same number of calories. Subjects studied performed 1 hour of weigth lifting, 1 hour of moderate bicycle exercise or 1 hour of sitting and reading. Each exercise bout burned about 150 kcal more than the same period of rest. We measured the rate at which they burn fat calories from a breakfast given to them after the exercise. Oxidation of dietary fat eaten in a meal after completion of the exercise was increased by about one-fourth and the increase was similar for both weight lifting exercise and bicycle exercise. Thus weight lifting does increase the amount of dietary fat burned and this reduces the amount that goes to fat stores during the 12 hours after the meal. The effect is about the same for weight lifting and aerobic exercise.