女性在不同运动范围下深蹲时的肌肉激活

IF 0.5 Q4 ORTHOPEDICS MLTJ-Muscles Ligaments and Tendons Journal Pub Date : 2023-01-12 DOI:10.3390/muscles2010002
Lissiane Almeida Cabral, L. Lima, C. E. Cabido, R. Fermino, S. Oliveira, A. Medeiros, L. F. Barbosa, Thiago M. F. Souza, Túlio Banja, C. Assumpção
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引用次数: 0

摘要

目的:分析股骨直肌(RF)、股外侧肌(VL)、臀大肌(GM)和股二头肌(BF)在90°和140°运动范围内同心圆和偏心动作时的肌肉激活情况。方法:35例女性(32.9±7.4岁);64.5±11.5 kg;1.63±0.1 m;BMI: 24.2±2.9 kg/m2;%脂肪:24.9±6.5%)进行了至少8周的运动。电极放置在标准位置。信号由A/D SAS1000 V8转换器采集,肌电活动以最高产生值的百分比(%RMS)归一化。数据采用重复测量双因素方差分析,效应量(η2)和差异以百分点(∆p.p)计算。结果:RF (p = 0.001;∆= 5.1 p.p)和BF活化(p = 0.020;(= 4.0 p.p.)在90°偏心作用下较高。RF显示运动范围与%RMS之间存在交互作用,且具有较大的效应量(F = 37.9;P = 0.001;η2 = 0.485)。在140°处VL活化较高(p = 0.005;∆= 3.9 p.p.), 90°时更高(p = 0.006;∆= 3.7 p.p.),具有较大效应量的显著交互作用(F = 21.3;P = 0.001;η2 = 0.485)。GM活性在同心圆90°处较高(p = 0.020;∆= 5.4 p.p.)和偏心作用(p = 0.022;∆= 41 p.p.)。结论:双关节肌肉仅在深蹲动作的偏心动作中受深蹲幅度的影响,而单关节肌肉在深蹲动作的同心和偏心动作中均受深蹲幅度的影响。
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Muscle Activation during the Squat Performed in Different Ranges of Motion by Women
Purpose: To analyze the muscle activation of the rectus femoris (RF), vastus lateralis (VL), gluteus maximus (GM), and biceps femoris (BF) in concentric and eccentric actions in the squat at 90° and 140° range of motion. Methods: Thirty-five women (32.9 ± 7.4 years; 64.5 ± 11.5 kg; 1.63 ± 0.1 m; BMI: 24.2 ± 2.9 kg/m2; %fat: 24.9 ± 6.5%) experienced exercise for at least eight weeks. Electrodes were positioned in standardized locations. The signals were acquired by an A/D SAS1000 V8 converter and the electromyographic activity normalized in the percentage of the highest produced value (%RMS). The data were analyzed using repeated measures two-way ANOVA, with effect size (η2) and differences calculated in percentage points (∆ p.p.). Results: The RF (p = 0.001; ∆ = 5.1 p.p.) and BF activation (p = 0.020; ∆ = 4.0 p.p.) was higher at 90° in the eccentric action. The RF showed an interaction between the range of motion and %RMS, with a large effect size (F = 37.9; p = 0.001; η2 = 0.485). The VL activation was higher at 140° (p = 0.005; ∆ = 3.9 p.p.) in the concentric action and higher at 90° (p = 0.006; ∆ = 3.7 p.p.) in the eccentric action, with a large effect size significant interaction (F = 21.3; p = 0.001; η2 = 0.485). The GM activation was higher at 90° in the concentric (p = 0.020; ∆ = 5.4 p.p.) and eccentric action (p = 0.022; ∆ = 41 p.p.). Conclusions: The biarticular muscles were influenced by the squat range only in the eccentric action of the movement, while the monoarticular muscles were influenced by the squat in both concentric and eccentric muscle action.
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来源期刊
CiteScore
1.30
自引率
0.00%
发文量
51
期刊介绍: MLTJ (Muscle, Ligaments and Tendons Journal) is an open access, peer-reviewed online journal that encompasses all aspects of clinical and basic research studies related to musculoskeletal, ligament, tendon, public health, exercise physiology and kinesiology issues. Muscle, Ligaments and Tendons Journal (MLTJ) provides the platform for exchange of new clinical and scientific information in the most precise and expeditious way to achieve timely dissemination of information and cross-fertilization of ideas. It is the official journal of the Italian Society of Muscles, Ligaments and Tendons (I.S.Mu.L.T.), Società Italiana Terapia con Onde D’urto (S.I.T.O.D.) and Società Italiana Studio Piede e Caviglia (S.I.S.P.E.C)
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