EFFECTS OF DETRAINING FOLLOWING SHORT-TERM RESISTANCE TRAINING ON ECCENTRIC AND CONCENTRIC MUSCLE STRENGTH
EFFECTS OF DETRAINING FOLLOWING SHORT-TERM RESISTANCE TRAINING ON ECCENTRIC AND CONCENTRIC MUSCLE STRENGTH
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DOI：
10.1111/j.1748-1716.1992.tb09263.x
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发表时间：
1992-01-01
期刊：
影响因子：
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通讯作者：
TESCH, PA
中科院分区：
文献类型：
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作者：
COLLIANDER, EB;TESCH, PA
健康男性在12周的适应性阻力训练（3周-1）之前和之后以及12周的停训之后进行了检查。训练包括四到五组六个耦合的最大自愿双边同心和偏心（组ECCON; n = 10）或12同心（组CON; n = 8）股四头肌肌肉动作。在不同的恒定角速度和三个重复的最大半蹲和垂直跳跃高度下，测量了同心和偏心的峰值扭矩。（P < 0.05）训练和停止训练后峰值扭矩的总体增加比对照组。因此，在实验期间，ECCON组的同心峰值扭矩（0.52 rad s-1）增加更多（P < 0.05），而偏心峰值扭矩的增加仅在ECCON组中保留。在0.52 rad s-1时，响应于训练的峰值扭矩的增加大于（P < 0.05）在2.62 rad s-1时。在ECCON组中，训练引起的扭矩-速度模式的改变在停止训练后仍然存在，而在CON组中则没有。在半蹲下，CON组和ECCON组中保留的增加（P < 0.05）分别为12%和18%。两组在停训后垂直跳跃高度都没有增加。这项研究表明，与同心抗阻训练相比，同心抗阻训练和离心抗阻训练在停训后对同心抗阻和离心抗阻峰值扭矩的保留更大。只有前政权引起的扭矩-速度曲线的形状的变化，这是明显的停训后。这些结果表明，离心肌肉动作的性能是至关重要的，以优化增加肌肉力量，以应对重阻力训练，因为它可能会引起更大和更长的神经适应比同心行动的性能。
Healthy males were examined before and after 12 weeks of accommodated resistance training (three week-1) and after 12 weeks of detraining. Training consisted of four to five sets of six coupled maximum voluntary bilateral concentric and eccentric (Grp ECCON; n = 10) or 12 concentric (Grp CON; n = 8) quadriceps muscle actions. Concentric and eccentric peak torque at various constant angular velocities and three repetition maximum half-squat and vertical jump height were measured.Grp ECCON showed greater (P < 0.05) overall increase in peak torque after training and detraining than Grp CON. Thus, concentric peak torque (0.52 rad s-1) increased more (P < 0.05) over the experimental period in Grp ECCON and increases in eccentric peak torque were preserved in Grp ECCON only. Increases in peak torque in response to training were greater (P < 0.05) at 0.52 than at 2.62 rad s-1. Alterations in the torque-velocity patterns induced by training remained after detraining in Grp ECCON but not in Grp CON. The retained increases (P < 0.05) in half-squat were 12 and 18 % in Grps CON and ECCON, respectively. Neither group showed increased vertical jump height after detraining.This study showed greater preservation of concentric and eccentric peak torque after detraining following coupled concentric and eccentric than concentric resistance training. Only the former regime induced a change in the shape of torque-velocity curves that was manifest after detraining. These results suggest that the performance of eccentric muscle actions is critical to optimize increases in muscular strength in response to heavy resistance training, because it probably induce greater and more long-lived neural adaptations than the performance of concentric actions.