Surakka J, Alanen E, Aunola S, Karppi S-L, Pekkarinen H
National Public Health Institute, Department of Health and Functional Capacity, Turku, Finland.
Int J Sports Med. 2006 Jun;27(6):448-55. doi: 10.1055/s-2005-865785.
The purpose of this study was to evaluate and compare the effects of training either with a light load or without any load in a 16-week power-type strength training intervention in sedentary middle-aged subjects. A total of 85 subjects participated in the study. In a supervised 22-week training intervention, including 16 weeks of power-type strength training, 42 subjects (Light Load group=LL group) trained with a 1.1 kg weight on each ankle and 43 subjects (No Load group=NOL group) trained without any external load. Subjects were comparable concerning their training attendance, and anthropometric and physiological characteristics. Training effects were evaluated by measuring Vertical Squat Jump (VSJ), 20-metre Running Time (20 mRT), Maximal Anaerobic Cycling Power of leg muscles (MACP), and Maximal Oxygen Uptake (V.O (2 max)) before and after the intervention. The LL group improved VSJ and MACP significantly (p<0.05), compared with the NOL group. No difference between the groups was observed in 20 mRT or in V.O (2 max). To conclude, the external loads of 2.2 kg, in total, increased the efficiency of power-type strength training in vertical jumps and in anaerobic power in leg muscles, but not in sprint running.
本研究旨在评估和比较在久坐不动的中年受试者中，进行为期16周的力量型力量训练干预时，轻负荷训练与无负荷训练的效果。共有85名受试者参与了该研究。在一项为期22周的有监督的训练干预中，包括16周的力量型力量训练，42名受试者（轻负荷组=LL组）在每个脚踝佩戴1.1千克的重量进行训练，43名受试者（无负荷组=NOL组）在没有任何外部负荷的情况下进行训练。受试者在训练出勤率、人体测量和生理特征方面具有可比性。通过在干预前后测量垂直深蹲跳（VSJ）、20米跑步时间（20 mRT）、腿部肌肉最大无氧骑行功率（MACP）和最大摄氧量（V.O (2 max)）来评估训练效果。与NOL组相比，LL组的VSJ和MACP显著改善（p<0.05）。两组在20 mRT或V.O (2 max)方面未观察到差异。总之，总共2.2千克的外部负荷提高了力量型力量训练在垂直跳跃和腿部肌肉无氧功率方面的效率，但对短跑没有影响。
