长肌等长与全范围运动等张训练对阻力训练个体局部股四头肌肥大的影响。

IF 2
Dorian Varovic, Kristian Zganjer, Milo Wolf, Patroklos Androulakis-Korakakis, Brad Jon Schoenfeld, Pavle Mikulic
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引用次数: 0

摘要

本研究探讨了长肌长度(ISOM)等距训练与全范围运动(ROM)等张训练(ISOT)对股四头肌局部肥大的影响。23名健康的、接受阻力训练的男性和女性完成了为期6周、每周两次的干预。采用受试者内研究设计,四肢随机分为单侧ISOM或ISOT膝关节伸展。在干预前和干预后分别评估大腿前部和外侧的近端、中端和远端肌肉厚度。数据分析采用贝叶斯线性混合效应模型。大腿前肌总厚度的条件间估计为-0.20 cm(高密度可信区间[HDI]: -0.54, 0.16),方向概率为87% (pd),后验分布超过实际等效区域(ROPE)的概率为75%。在大腿前部近端,情况间估计显示最大的方向移位有利于ISOM(对比估计:-0.11 cm [95% HDI: -0.24, 0.02]), 82%的后部分布超过ROPE。两种情况下,总和区域外侧大腿肌肉厚度的变化都很小,可以忽略不计。总的来说,ISOM和ISOT在阻力训练个体中引起相似的股四头肌肥大。长肌肉长度的等长训练可能会在大腿前近端引起优越的肥厚效应;然而,影响估计的不确定性妨碍了这方面的明确结论,有必要进一步调查。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Effects of Long Muscle Length Isometric versus Full Range of Motion Isotonic Training on Regional Quadriceps Femoris Hypertrophy in Resistance-Trained Individuals.

This study explored the effects of isometric training at long muscle lengths (ISOM) vs. full range of motion (ROM) isotonic training (ISOT) on quadriceps femoris regional hypertrophy. Twenty-three healthy, resistance-trained men and women completed a 6-week, twice-per-week intervention. A within-subject study design was employed with limbs randomized to unilateral ISOM or ISOT knee extension. Muscle thickness was assessed pre- and post-intervention at proximal, middle, and distal sites of the anterior thigh and lateral thigh. Data was analyzed using Bayesian linear mixed-effects models. The between-condition estimate for summed anterior thigh muscle thickness was -0.20 cm (high-density credible intervals [HDI]: -0.54, 0.16), with 87% probability of direction (pd) and 75% of the posterior distribution exceeding the region of practical equivalence (ROPE). At the proximal site of the anterior thigh, between-condition estimates showed the greatest directional shift in favor of ISOM (contrast estimate: -0.11 cm [95% HDI: -0.24, 0.02]), with 82% of the posterior distribution exceeding the ROPE. Minimal to negligible changes in summed and regional lateral thigh muscle thickness were found for both conditions. Overall, ISOM and ISOT elicited similar quadriceps hypertrophy in resistance-trained individuals. Isometric training at long muscle lengths may elicit a superior hypertrophic effect in the proximal anterior thigh; however, uncertainty in the effect estimates precludes definitive conclusion in this regard and further investigation is warranted.

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