Acute Effects of Isometric Contraction Distribution on Jump Performance in Volleyball Players.

IF 2.5 Q1 SPORT SCIENCES
Jonatan Helbin, Dawid Gawel, Artur Terbalyan, Michal Wilk, Michal Krzysztofik, Danny Lum, Jakub Jarosz
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引用次数: 0

Abstract

Objectives: This study evaluated how different distributions of isometric conditioning activity (ICA) durations affect countermovement jump (CMJ) performance in highly trained male volleyball players compared to a control condition (CTRL). Methods: Twelve participants performed CTRL and three ICA protocols in a half-back squat: 9 s (3 × 1 × 3 s), 27 s (3 × 3 × 3 s), and 45 s (3 × 5 × 3 s). CMJ height was measured before and at 3, 6, 9, and 12 min post ICA. Results: A two-way repeated measures ANOVA showed significant main effects of time (F = 3.820; p = 0.009) and condition (F = 6.451; p = 0.001), with no significant interaction (F = 1.484; p = 0.138). Post hoc analysis indicated significant CMJ height increases at 9 min [mean difference (MD) = 5.1 ± 0.6 cm; p = 0.045] and 12 min (MD = 6.0 ± 1.4 cm; p = 0.010) post ICA. Moreover, CMJ height was significantly greater in the 27 s (MD = 10.0 ± 0.6 cm; p = 0.002) and 45 s (MD = 7.3 ± 2.0 cm; p = 0.035) conditions compared to the 9 s protocol. Conclusions: Incorporating ICAs of 9 s or 45 s into warm-up routines can enhance CMJ performance, although these durations may elicit different neuromuscular adaptations and movement strategies.

等长收缩分布对排球运动员跳跃成绩的急性影响。
目的:本研究评估了高训练男子排球运动员等长调节活动(ICA)持续时间的不同分布对反动作跳(CMJ)表现的影响,并与对照条件(CTRL)进行比较。方法:12名受试者在半背深蹲中分别进行CTRL和ICA操作:9 s (3 × 1 × 3 s)、27 s (3 × 3 × 3 s)和45 s (3 × 5 × 3 s)。在ICA前、3、6、9、12 min测量CMJ高度。结果:双向重复测量方差分析显示,时间(F = 3.820; p = 0.009)和条件(F = 6.451; p = 0.001)是显著的主效应,无显著的交互作用(F = 1.484; p = 0.138)。事后分析显示,9分钟时CMJ高度显著增加[平均差(MD) = 5.1±0.6 cm;p = 0.045]和术后12 min (MD = 6.0±1.4 cm; p = 0.010)。此外,27 s (MD = 10.0±0.6 cm, p = 0.002)和45 s (MD = 7.3±2.0 cm, p = 0.035)的CMJ高度显著高于9 s方案。结论:将9秒或45秒的ICAs纳入热身程序可以提高CMJ的表现,尽管这些持续时间可能会引起不同的神经肌肉适应和运动策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Functional Morphology and Kinesiology
Journal of Functional Morphology and Kinesiology Health Professions-Physical Therapy, Sports Therapy and Rehabilitation
CiteScore
4.20
自引率
0.00%
发文量
94
审稿时长
12 weeks
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