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首页> 外文期刊>Journal of human kinetics. >Strength Training Prior to Endurance Exercise: Impact on the Neuromuscular System, Endurance Performance and Cardiorespiratory Responses
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Strength Training Prior to Endurance Exercise: Impact on the Neuromuscular System, Endurance Performance and Cardiorespiratory Responses

机译:耐力运动之前的力量训练:对神经肌肉系统,耐力表现和心肺反应的影响

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This study aimed to investigate the acute effects of two strength-training protocols on the neuromuscular and cardiorespiratory responses during endurance exercise. Thirteen young males (23.2 ± 1.6 years old) participated in this study. The hypertrophic strength-training protocol was composed of 6 sets of 8 squats at 75% of maximal dynamic strength. The plyometric strength-training protocol was composed of 6 sets of 8 jumps performed with the body weight as the workload. Endurance exercise was performed on a cycle ergometer at a power corresponding to the second ventilatory threshold until exhaustion. Before and after each protocol, a maximal voluntary contraction was performed, and the rate of force development and electromyographic parameters were assessed. After the hypertrophic strengthtraining and plyometric strength-training protocol, significant decreases were observed in the maximal voluntary contraction and rate of force development, whereas no changes were observed in the electromyographic parameters. Oxygen uptake and a heart rate during endurance exercise were not significantly different among the protocols. However, the time-to-exhaustion was significantly higher during endurance exercise alone than when performed after hypertrophic strength-training or plyometric strength-training (p 0.05). These results suggest that endurance performance may be impaired when preceded by strength-training, with no oxygen uptake or heart rate changes during the exercise.
机译:这项研究旨在调查两种力量训练方案对耐力运动过程中神经肌肉和心肺反应的急性影响。十三名年轻男性(23.2±1.6岁)参加了这项研究。肥厚力量训练方案由6组8下蹲组成,最大动态强度的75%。腹肌力量训练协议由6组,每组8次跳跃组成,以体重为工作量。在自行车测功机上以相当于第二个呼吸阈值的力量进行耐力运动,直到筋疲力尽。在每个方案之前和之后,进行最大程度的自愿收缩,并评估力量发展的速度和肌电参数。肥大力量训练和腹肌力量训练方案后,最大自愿收缩和力量发展率观察到显着下降,而肌电图参数未见变化。耐力运动过程中的摄氧量和心率在方案之间无显着差异。但是,单独进行耐力锻炼时的力竭时间明显比进行肥厚力量训练或腹肌力量训练后的力竭时间长(p <0.05)。这些结果表明,在进行力量训练之前,耐力表现可能会受到损害,并且在运动过程中不会吸收氧气或改变心率。

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