健康成年男性下肢和躯干肌肉募集对前锯肌激活的影响。
Effects of lower extremity and trunk muscles recruitment on serratus anterior muscle activation in healthy male adults.
作者信息
Kaur Navpreet, Bhanot Kunal, Brody Lori Thein, Bridges Jennifer, Berry David C, Ode Joshua J
机构信息
University of St. Augustine for Health Sciences, Austin, TX, USA.
Rocky Mountain University of Health Professions, Provo, UT, USA.
出版信息
Int J Sports Phys Ther. 2014 Dec;9(7):924-37.
BACKGROUND
Poor activation of the serratus anterior (SA) muscle may result in abnormal shoulder rhythm, and secondarily contribute to impingement and rotator cuff tears. Sequential activation of the trunk, pelvis, and lower extremity (LE) muscles is required to facilitate the transfer of appropriate forces from these body segments to the upper extremity. Myofascial connections that exist in the body, and LE and trunk muscles (TM) activity may influence scapular and upper limb activity. The purpose of this study was to investigate the effect of simultaneous recruitment of the LE muscles and TM on the SA muscle activation when performing a forward punch plus (FPP) and six variations of the FPP exercise.
STUDY DESIGN
Experimental, within-subject repeated measures.
METHODS
Surface electromyographic (EMG) activity of the SA, latissimus dorsi, and external oblique muscles on the dominant side, bilateral gluteus maximus muscles, and contra-lateral femoral adductor muscles were analyzed in forward punch plus (FPP) movement and six variations in twenty one healthy male adults. The percentage of maximum voluntary isometric contraction (%MVIC) for each muscle was compared across various exercises using a 1-way repeated -measures analysis of variance with Sidak pair wise comparison as post-hoc test (p < 0.05).
RESULTS
Pairwise comparisons found that the EMG activity of the serratus anterior (SA) during the FPP with contralateral closed chain leg extension (CCLE), FPP with ipsilateral closed chain leg extension (ICLE), FPP with closed chain serape effect (CS), and FPP with open chain serape effect (OS) showed significantly higher EMG activity than the FPP.
CONCLUSIONS
Simultaneous recruitment of the lower extremity and trunk muscles increases the activation of the SA muscle during the FPP exercise.
CLINICAL RELEVANCE
Rehabilitation clinicians should have understanding of the kinetic chain relationships between the LE, the trunk, and the upper extremity while prescribing exercises. The results of this study may improve clinicians' ability to integrate the kinetic chain model in a shoulder rehabilitation program.
LEVEL OF EVIDENCE
2b.
背景
前锯肌（SA）激活不足可能导致肩部节律异常，进而导致撞击和肩袖撕裂。躯干、骨盆和下肢（LE）肌肉需顺序激活，以促进这些身体节段向肢体传递适当力量。身体中存在的肌筋膜连接以及LE和躯干肌肉（TM）活动可能影响肩胛骨和上肢活动。本研究的目的是调查在进行前冲拳加（FPP）及FPP练习的六种变体时，同时募集LE肌肉和TM对SA肌肉激活的影响。
研究设计
实验性，受试者内重复测量。
方法
分析了21名健康男性成年人在进行前冲拳加（FPP）动作及六种变体时，优势侧SA、背阔肌和腹外斜肌、双侧臀大肌以及对侧股内收肌的表面肌电图（EMG）活动。使用单因素重复测量方差分析及Sidak两两比较作为事后检验（p < 0.05），比较各肌肉在不同练习中的最大自主等长收缩百分比（%MVIC）。
结果
两两比较发现，在进行对侧闭链腿部伸展（CCLE）的FPP、同侧闭链腿部伸展（ICLE）的FPP、闭链斜角肌效应（CS）的FPP以及开链斜角肌效应（OS）的FPP时，前锯肌（SA）的EMG活动显著高于普通FPP。
结论
在FPP练习中，同时募集下肢和躯干肌肉可增加SA肌肉的激活。
临床意义
康复临床医生在制定练习方案时，应了解LE、躯干和上肢之间的动力链关系。本研究结果可能会提高临床医生在肩部康复计划中整合动力链模型的能力。
证据水平
2b。
Zotero 插件