Effects of Prolonging Eccentric Phase Duration in Parallel Back-Squat Training to Momentary Failure on Muscle Cross-Sectional Area, Squat One Repetition Maximum, and Performance Tests in University Soccer Players
Effects of Prolonging Eccentric Phase Duration in Parallel Back-Squat Training to Momentary Failure on Muscle Cross-Sectional Area, Squat One Repetition Maximum, and Performance Tests in University Soccer Players
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DOI：
10.1519/jsc.0000000000002838
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发表时间：
2021-03-01
影响因子：
3.2
通讯作者：
Mizuno, Masao
中科院分区：
文献类型：
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作者：
Shibata, Keisuke;Takizawa, Kazuki;Mizuno, Masao
Shibata, K、Takizawa, K、Nosaka, K 和 Mizuno, M。平行后深蹲训练中延长偏心阶段持续时间对肌肉横截面积、深蹲一次重复最大值和大学足球运动员表现测试瞬时衰竭的影响。 J Strength Cond Res 35(3): 668-674, 2021 - 这项研究旨在比较 2 种深蹲训练计划，重复直至瞬间力竭，不同偏心阶段持续时间（2 秒与 4 秒）对肌肉横截面积、深蹲 1 重复最大次数 (1RM)、深蹲跳跃 (SJ) 和反向运动跳跃 (CMJ) 高度、敏捷性（T 检验）和溜溜球的变化 间歇恢复试验（YY-IR2）。男性大学足球运动员（19.9 +/- 0.9 岁、172.2 +/- 3.8 厘米、66.1 +/- 6.6 公斤）被随机分配到 2 组中的一组； CON 2 秒，ECC 4 秒（C2/E4，n = 11）或 CON 2 秒，ECC 2 秒（C2/E2，n = 11）。他们每周使用 75% 1RM 重量进行平行后蹲练习两次，持续 6 周，每个方案进行 3 组，每组进行短暂力竭。结果测量在第 3 周之前（前）和之后（中；仅 1RM、SJ 和 CMJ）以及第 6 周（后）进行。 C2/E2（前：95.9 +/- 12.2 kg，中：108.2 +/- 15.4 kg，后：113.6 +/- 14.8 kg）比 C2/E4（95.5 +/- 12.9 kg，102.7 +/- 15.6 kg，105.5 +/-）的一次重复最大增加（p < 0.05）分别为 14.9 千克）。 C2/E2 和 C2/E4 之间的横截面积（大腿长度的 50%：3.5 +/- 2.8%）、SJ（6.7 +/- 8.9%）和 CMJ 高度（6.3 +/- 8.6%）增加相似，但两组中 T 检验或 YY-IR2 均没有明显变化。这些结果表明，与短暂失败的 ECC 阶段持续时间计划相比，在深蹲练习中增加 ECC 阶段持续时间并不会产生更大的训练效果。
Shibata, K, Takizawa, K, Nosaka, K, and Mizuno, M. Effects of prolonging eccentric phase duration in parallel back-squat training to momentary failure on muscle cross sectional area, squat one repetition maximum, and performance tests in university soccer players. J Strength Cond Res 35(3): 668-674, 2021-This study aimed to compare 2 squat training programs repeated until momentary failure with different eccentric phase duration (2 seconds vs. 4 seconds) on the changes in muscle cross-sectional area, squat 1 repetition maximum (1RM), squat jump (SJ), and countermovement jump (CMJ) height, agility (T-test), and Yo-Yo intermittent recovery test (YY-IR2). Male university soccer players (19.9 +/- 0.9 years, 172.2 +/- 3.8 cm, 66.1 +/- 6.6 kg) were randomly assigned to one of the 2 groups; CON for 2 seconds and ECC for 4 seconds (C2/E4, n = 11) or CON for 2 seconds and ECC for 2 seconds (C2/E2, n = 11). They performed parallel back-squat exercises twice a week for 6 weeks using 75% 1RM weight to momentary failure in each set for 3 sets with each protocol. Outcome measurements were taken before (Pre) and after 3 (Mid; 1RM, SJ, and CMJ only), and at 6 weeks (Post). One repetition maximum increased more (p < 0.05) for C2/E2 (Pre: 95.9 +/- 12.2 kg, Mid: 108.2 +/- 15.4 kg, Post: 113.6 +/- 14.8 kg) than C2/E4 (95.5 +/- 12.9 kg, 102.7 +/- 15.6 kg, 105.5 +/- 14.9 kg, respectively). Cross-sectional area (50% of the thigh length: 3.5 +/- 2.8%), SJ (6.7 +/- 8.9%) and CMJ height (6.3 +/- 8.6%) increased similarly between C2/E2 and C2/E4, but no significant changes in T-test or YY-IR2 were evident in either group. These results suggest that increasing the ECC phase duration during squat exercises does not produce greater training effects when compared with a shorter ECC phase-duration program with momentary failure.