肥胖对男青年在中等强度有氧运动中生理代谢反应的影响

The Effects of Obesity on the Physiological and Metabolic Reaction in Acute Endurance Exercise of Moderate Intensity in Men

对无系统运动训练史的健康青年男性(肥胖组8人,对照组9人)进行65%VO2max负荷强度的功率自行车有氧运动,监测运动过程中受试者心率、血压、RPE及RQ等生理指标和血糖、血清TG、FFA及GH等生化指标的变化,分析有氧运动过程中肥胖者与常人是否存在生理代谢上的差异。研究发现,肥胖组安静时和运动中的心率和血压水平显著高于对照组,易出现运动疲劳;运动中RQ和血糖浓度显著高于对照组,而血清TG和FFA浓度增长幅度低于对照组;GH对运动的反应较为迟钝。结果提示肥胖者体能下降,脂肪氧化供能能力降低。

Nine normal and eight obese subjects were studied during exercise intensities of 65% of maximal oxygen consumption （VO2max）. HR,BP and RPE were monitored and blood was taken to measure plasma GLU,TG , FFA and GH. HR ,BP, RQ and the level of plasma GLU were higher significantly than those of normal subjects. A significant decline in incremental extent of plasma [TG] and [FFA],and the reaction of GH to exercise in obese men was dully.The result indicated that there is a decline of ability to mobilize endogenous fat.