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首页> 外文期刊>Journal of the International Society of Sports Nutrition >Carbohydrate supplementation and psychophysiological responses during moderate exercise in hypoxia
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Carbohydrate supplementation and psychophysiological responses during moderate exercise in hypoxia

机译：缺氧中适度运动期间的碳水化合物补充和心理生理反应

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BACKGROUND:Rating of Perceived Exertion (RPE) is a subjective scale to monitor overload and fatigue during exercise. Hypoxia may worsen the perception of fatigue, compromising the self-reported perception of effort and increasing RPE. The objective was to evaluate the effects of carbohydrate (CHO) supplementation on RPE during exercise in hypoxia simulating 4200?m.METHODS:Eight male physically active volunteers performed two exercises at 50% VOsub2peak/sub and 1% slope: exercise in hypoxia + placebo or exercise in hypoxia + CHO (6% maltodextrin) with supplementation at 20, 40, and 60?min during exercise. Oxygen Saturation (SaOsub2/sub%) was assessed at baseline and after exercise, while RPE and HR were measured each 10?min during the trial.RESULTS:SaOsub2/sub% decreased after exercise in both conditions of hypoxia compared to rest. The RPE did not differ between groups. However, the RPE increased in hypoxia after 20?min of exercise in relation to 10?min. The Area Under the Curve (AUC) of RPE was lower in hypoxia + CHO compared to hypoxia. The AUC of the HR/RPE ratio in the hypoxia + CHO group was higher in relation to hypoxia.CONCLUSIONS:Our results indicate that CHO supplementation does not change RPE induced by 60?min of exercise at 50% VOsub2peak/sub in hypoxia equivalent to 4200?m at the different times analyzed. However, in hypoxia + CHO the (AUC)-60?min of total RPE decreased during exercise, while the heart rate/RPE ratio improved, indicating lower RPE in the hypoxic environment.
机译：背景：感知劳动（RPE）的评级是监测运动期间过载和疲劳的主观规模。缺氧可能会使疲劳感染，损害自我报告的努力和增加RPE的感知。目的是评估碳水化合物（CHO）补充对RPE在缺氧模拟4200的运动期间RPE的影响。八个男性活性志愿者在50％VO 2peak 和1％坡度进行两次练习：在缺氧+安慰剂或在缺氧+ Cho（6％麦芽糖糊精）中锻炼，在运动期间辅以补充在20,40和60？分钟。在基线和运动后评估氧饱和度（SAO 2 ％），而在试验期间每10次测量RPE和HR。结果：SAOURTS：SAOJ 2 ％减少与休息相比，在缺氧的两种条件下运动。 rpe在组之间没有差异。然而，在20次运动的缺氧后，缺氧在锻炼的缺氧中增加到10？min。与缺氧相比，RPE的曲线曲线（AUC）下的区域较低。缺氧+ CHO组中HR / RPE比的AUC与缺氧+ CHO组更高。结论：我们的结果表明，CHO补充不会在50％VO 2Peak（50％VO 2Peak）锻炼中诱导的RPE诱导的RPE。在不同时间分析的缺氧中的缺氧量相当于4200？m。然而，在缺氧+ cho（AUC）-60？min的总RPE运动期间减少，而心率/ RPE比率改善，表明缺氧环境下降。

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