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首页> 外文期刊>Journal of human kinetics >Physiological and Physical Effects of Different Milk Protein Supplements in Elite Soccer Players
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Physiological and Physical Effects of Different Milk Protein Supplements in Elite Soccer Players

机译：优秀足球运动员中不同乳蛋白补充剂的生理和物理效应

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Brazilian soccer championships involve a large number of teams and are known to cause stress and loss of muscle mass besides other negative physical consequences. This study was designed to compare the effects produced by three types of protein supplements on body composition, biochemical parameters and performance of a top Brazilian professional soccer team during an actual tournament. Twenty-four athletes assessed as having a normal nutrient intake were divided into three groups according to supplementation. Immediately after each daily training, the athletes received 1 gx kg-1 of body weight x day1 of either whey protein (WP), hydrolyzed whey protein (HWP) or casein (CAS) for eight weeks. Before and after the experimental period, anthropometric characteristics, physical performance by the yo-yo and 3000m tests, and several biochemical variables in blood (uric acid, total cholesterol, HDL-cholesterol, creatinine, glucose) were measured. While no improvement in physical performance was observed with regard to the applied treatments, casein supplementation resulted in muscle mass increase (p<0.039), while WP and HWP favoured the maintenance of the initial muscle mass. Moreover, the eight-week intervention was found to cause no abnormalities in biochemical and anthropometric variables monitored, but instead, the intervention showed to be positive in comparison to the adverse anthropometric changes, when no supplementation was made. It was concluded that supplementation immediately after training sessions with any of the three sources of protein during the competitive period is beneficial and safe, as well as capable of sustaining or even increasing muscle mass.
机译：巴西足球锦标赛涉及许多球队，除其他负面身体后果外，还会引起压力和肌肉质量下降。这项研究旨在比较三种蛋白质补充剂在实际比赛中对巴西顶级职业足球队的身体成分，生化参数和性能产生的影响。根据补充，将二十四名营养摄入正常的运动员分为三组。每天训练后，运动员立即接受1 gx kg-1体重x day1的乳清蛋白（WP），水解乳清蛋白（HWP）或酪蛋白（CAS）八周。实验期间前后，测量了人体测量学特征，yo-yo和3000m测试的物理性能以及血液中的几个生化变量（尿酸，总胆固醇，HDL-胆固醇，肌酐，葡萄糖）。虽然未观察到所应用治疗的物理性能改善，但酪蛋白补充剂导致肌肉质量增加（p <0.039），而WP和HWP有利于维持初始肌肉质量。此外，发现为期八周的干预未引起所监测的生化和人体测量学变量异常，但与不进行任何补充的不利人体测量学变化相比，该干预措施显示为阳性。结论是，在训练后立即在比赛期间补充三种蛋白质来源中的任何一种都是有益和安全的，并且能够维持甚至增加肌肉质量。

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