首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >An Electromyographic Analysis of Lateral Raise Variations and Frontal Raise in Competitive Bodybuilders
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An Electromyographic Analysis of Lateral Raise Variations and Frontal Raise in Competitive Bodybuilders

机译:竞技体制术中横向升高变化和额头升高的肌电分析

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摘要

The present study examined the muscle activation in lateral raise with humerus rotated externally (LR-external), neutrally (LR-neutral), internally (LR-internal), with flexed elbow (LR-flexed) and frontal raise during both the concentric and eccentric phase. Ten competitive bodybuilders performed the exercises. Normalized surface electromyographic root mean square (sEMG RMS) was obtained from anterior, medial, and posterior deltoid, pectoralis major, upper trapezius, and triceps brachii. During the concentric phase, anterior deltoid and posterior deltoid showed greater sEMG RMS in frontal raise (effect size (ES)-range: 1.78/9.25)) and LR-internal (ES-range: 10.79/21.34), respectively, vs. all other exercises. Medial deltoid showed greater sEMG RMS in LR-neutral than LR-external (ES: 1.47 (95% confidence-interval—CI: 0.43/2.38)), frontal raise (ES: 10.28(95% CI: 6.67/13.01)), and LR-flexed (ES: 6.41(95% CI: 4.04/8.23)). Pectoralis major showed greater sEMG RMS in frontal raise vs. all other exercises (ES-range: 17.2/29.5), while upper trapezius (ES-range: 2.66/7.18) and triceps brachii (ES-range: 0.41/3.31) showed greater sEMG RMS in LR-internal vs. all other exercises. Similar recruitment patterns were found during the eccentric phase. When humerus rotates internally, greater activation of posterior deltoid, triceps brachii, and upper trapezius occurs. Humerus external rotation increases the activation of anterior and medial deltoid. Frontal raise mainly activates anterior deltoid and pectoralis major. LR variations and frontal raise activate specifically shoulders muscles and should be proposed accordingly.
机译:本研究检测了横向升高的肌肉活化,肱骨外部(LR-Extent),中性(LR-Neutral),内部(LR-Internal),弯曲的弯头(LR-Exceeded)和同心和偏心阶段。十个竞争性健美运动员进行了练习。归一化表面电拍摄根平均正方形(SEMR rms)是从前的,内侧,后滴水,胸壁,上梯和肱三头肌Brachii获得。在同心相期间,前倍增型和后三角形在正面升高中显示出更大的SEMG RMS(效果大小 - 谐振:1.78 / 9.25))和LR内部(ES-RANGE:10.79 / 21.34),VS.全部其他练习。内侧三醇在LR中性方面显示出大的SEMR-EXTERNAL(ES:1.47(95%置信 - 间隔 - CI:0.43 / 2.38)),正面升高(ES:10.28(95%CI:6.67 / 13.01)),和LR弯曲(ES:6.41(95%CI:4.04 / 8.23))。 Pectoralis Major在正面升高中显示出更大的SEMG RMS与所有其他练习(ES-Range:17.2 / 29.5),而上梯(ES-Range:2.66 / 7.18)和三头肌(ES-Range:0.41 / 3.31)显示出更多LR内部与所有其他练习中的SEMG RMS。在偏心阶段发现了类似的招聘模式。当肱骨内部旋转时,发生更大的后滴水,肱三头肌和上梯的激活。肱骨外部旋转增加了前部和内侧三角形的激活。正面升高主要激活前三角形和胸部专业。 LR变化和正面抬起可特别激活肩部肌肉,应该相应地提出。

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