膝关节伸肌区域肥厚在机器抵抗训练与自由重量训练的反应：一种随机的受试者方法

IF 1.4 Q3 REHABILITATION

JOURNAL OF BODYWORK AND MOVEMENT THERAPIES Pub Date : 2025-09-24 DOI:10.1016/j.jbmt.2025.09.027

Magellan T. Amanuma , Pedro Luiz T. Ikeda , Mariana T. Sakamoto , Julio Cesar Justino , Nicollas Silva Abreu , Maria Vitória de Sena Silva , Vitor de Salles Painelli Ph.D.

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引用次数: 0

摘要

肌肉肥大对机器和自由力量训练（RT）的反应在文献中被广泛争论。了解哪种形式的运动对肌肉肥大有更好的治疗效果和对人体的影响。因此，我们比较了自由举重（FW）和机器（MACH）的肌肉肥大反应。随机主题内设计。方法8例年轻、健康、未受过训练的女性（年龄：22±5岁；62.0±8.7 kg; 1.71±0.05 m; BMI: 21.4±3.3 kg m2），每条腿接受FW或MACH RT。RT包括针对膝关节伸肌的运动（FW：弓步；MACH：斜腿按压），3天·周- 1，共9周。通过超声评估股外侧肌（VL）和股直肌（RF）近端（50%）和远端（70%）部分的肌肥大情况，确定rt前后的肌肉肥大情况。采用混合模型进行数据分析，显著性设置为p≤0.05。结果在放疗前，各组肌肉和部位均无差异（p > 0.05）。太会增加发现弗兰克-威廉姆斯和马赫RF50 %(分别为+ 10.7%,p = 0.027; + 8.9%, p = 0.051), RF70 %(分别为+ 24.8%,p = 0.019; + 27.3%, p = 0.017), VL50 %(分别为+ 13.3%,p = 0.011; + 12.1%, p = 0.031)和VL70 %(分别为+ 12.7%,p = 0.046; + 15.7%, p = 0.016),表明RT-induced肌肉肥大发生在所有肌肉和部分。然而，rf50% （p = 0.816）、rf70% （p = 0.588）、vl50% （p = 0.679）或vl70% (p = 0.635) MT值未发现组×时间相互作用。结论sfw和MACH对未训练女性肌肉肥大的诱导效果相当。

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Comparable regional hypertrophy of the knee extensor muscles in response to resistance training with machines versus free weights: a randomized within-subject approach

Background

Muscle hypertrophy response to resistance training (RT) with machines and free weights is widely debated in the literature. Understanding which form of exercise is superior for muscle hypertrophy has therapeutic and ergogenic repercussions.

Objectives

Therefore, we compared muscle hypertrophy response between RT performed with free weights (FW) vs. machines (MACH).

Design

Randomized within-subject design.

Methods

Eight young, healthy, untrained women (age: 22 ± 5 years; 62.0 ± 8.7 kg; 1.71 ± 0.05 m; BMI: 21.4 ± 3.3 kg m²) had each of their legs submitted to RT with FW or MACH. RT included exercises targeting the knee extensor muscles (FW: lunge; MACH: inclined leg press), 3 days·week⁻¹, for 9 weeks. Muscle hypertrophy was determined pre- and post-RT through ultrasound to assess MT of the vastus lateralis (VL) and rectus femoris (RF) at their proximal (50 %) and distal (70 %) portions. The Mixed Model was conducted for data analysis, with significance set at p ≤ 0.05.

Results

No between-group differences were identified for any of the muscles and portions before RT (all comparisons, p > 0.05). MT increases were detected for both FW and MACH in RF50 % (respectively, +10.7 %, p = 0.027; and +8.9 %, p = 0.051), RF70 % (respectively, +24.8 %, p = 0.019; and +27.3 %, p = 0.017), VL50 % (respectively, +13.3 %, p = 0.011; and +12.1 %, p = 0.031) and VL70 % (respectively, +12.7 %, p = 0.046; and +15.7 %, p = 0.016), indicating that RT-induced muscle hypertrophy occurred across all muscles and portions. However, Group × Time interaction was not identified for RF50 % (p = 0.816), RF70 % (p = 0.588), VL50 % (p = 0.679) or VL70 % (p = 0.635) MT values.

Conclusions

FW and MACH were comparably effective to induce muscle hypertrophy in previously untrained women.

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来源期刊

JOURNAL OF BODYWORK AND MOVEMENT THERAPIES REHABILITATION-

CiteScore

2.80

自引率

0.00%

发文量

133

审稿时长

321 days

期刊介绍： The Journal of Bodywork and Movement Therapies brings you the latest therapeutic techniques and current professional debate. Publishing highly illustrated articles on a wide range of subjects this journal is immediately relevant to everyday clinical practice in private, community and primary health care settings. Techiques featured include: • Physical Therapy • Osteopathy • Chiropractic • Massage Therapy • Structural Integration • Feldenkrais • Yoga Therapy • Dance • Physiotherapy • Pilates • Alexander Technique • Shiatsu and Tuina