Influence of Different Loads on Force-Time Characteristics during Back Squats.
Influence of Different Loads on Force-Time Characteristics during Back Squats.
复制标题
后蹲时不同负荷对力-时间特性的影响。
DOI：
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发表时间：
2018
影响因子：
3.2
通讯作者：
M. Higuchi
中科院分区：
文献类型：
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作者：
T. Kubo;Kuniaki Hirayama;Nobuhiro Nakamura;M. Higuchi
后蹲（BSQ）期间的减速子阶段使得难以在整个运动范围内刺激肌肉，并且仅报告了BSQ期间的一次负载。本研究的目的是调查是否减速子阶段发生在BSQ与不同的负载，并评估负载的影响，减速子阶段的持续时间和负脉冲在减速子阶段。本研究招募了16名健康男性（平均值±标准差：年龄：25 ± 3岁;身高：1.73 ± 0.07 m;体重：83.2 ± 16.1 kg; BSQ一次重复最大值（1 RM）：163.8 ± 36.6 kg; BSQ 1 RM/体重：2.0 ± 0.4），他们进行了至少1年的阻力训练。受试者以随机顺序在测力板上使用0%、12%、27%、42%、56%、71%和85%的每种1 RM进行平行BSQ。根据力-时间数据计算减速子阶段持续时间和减速子阶段期间的负脉冲。除27% 1 RM和85% 1 RM（p = 0.01）外，减速子阶段的绝对持续时间根据负荷无显著差异。然而，随着负荷从12%1RM增加到85%1RM，减速子阶段的相对持续时间减少（p < 0.05）。在减速子阶段期间的负冲动也从0增加到42%1RM（p < 0.05）。减速子阶段发生与负载无关（0%-85%1RM），并且减速子阶段的大部分占据同心阶段，具有低-中等负载，并且在高负载的短减速子阶段期间发生大量的负脉冲。
The deceleration sub-phase during the back squat (BSQ) makes it difficult to stimulate the muscles throughout the full range of motion, and it has only been reported for one load during BSQ. The purpose of this study was to investigate whether a deceleration sub-phase occurs during BSQ with different loads and to assess the influence of load on the deceleration sub-phase duration and negative impulse during the deceleration sub-phase. Sixteen healthy men (mean ± standard deviation: age: 25 ± 3 years; height: 1.73 ± 0.07 m; mass: 83.2 ± 16.1 kg; BSQ one repetition maximum (1RM): 163.8 ± 36.6 kg; BSQ 1RM/body weight: 2.0 ± 0.4) who had performed resistance training for at least 1 year were recruited for this study. The subjects performed parallel BSQ with 0%, 12%, 27%, 42%, 56%, 71%, and 85% of each 1RM on a force plate in a random order. The deceleration sub-phase duration and negative impulse during the deceleration sub-phase were calculated from force-time data. The absolute durations of the deceleration sub-phase were not significantly different according to load except for 27% 1RM and 85% 1RM (p = 0.01). However, as the load increased from 12 to 85% 1RM, the relative duration of the deceleration sub-phase decreased (p < 0.05). The negative impulse during the deceleration sub-phase also increased from 0 to 42% 1RM (p < 0.05). A deceleration sub-phase occurs regardless of the load (0%-85% 1RM), and a large portion of the deceleration sub-phase occupied the concentric phase, with low-moderate loads, and a large amount of negative impulse occurred during the short deceleration sub-phase with a high load.
三国传与韩伯父——奇文传说（三）
DOI：
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发表时间：
2021
期刊：
室町前期の文化・社会・宗教
影响因子：
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作者：
Fehn;Anne-Maria;黒田彰
通讯作者：
黒田彰