在有或没有控制的等长运动中上肢和躯干肌肉激活的变化

IF 0.6 4区 医学 Q4 ENGINEERING, BIOMEDICAL Isokinetics and Exercise Science Pub Date : 2022-01-13 DOI:10.3233/ies-210215
Koji Murofushi, Daisuke Yamaguchi, K. Hirohata, H. Furuya, Sho Mitomo
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引用次数: 4

摘要

背景:等长收缩过程中的肌肉激活可以使用外部焦点指导方法来改变。目的:探索和比较八块上肢和躯干肌肉在等长挤压胸部运动中的活动,这些运动以相同的姿势进行,有没有施加控制以避免挤压物体。方法:采用45∘肩外展和前臂内旋等轴颈挤压法检查肌肉激活情况。在以最大压力握持物体的同时进行等距胸部挤压练习,并施加控制以避免挤压物体。通过表面肌电图测量肌肉激活。结果:在进行控制以避免挤压物体的运动过程中,下斜方肌(p<0.001)和背阔肌(p=0.03)表现出显著更高的活动性。在没有对照的情况下进行的运动中,上斜方肌、前锯齿肌和胸大肌表现出显著更高的活动性(分别为p=0.016、p<0.001和p<0.001)。结论:这种新颖的等长运动可以增加肩关节中段的肩胛肌。因此,它可能有助于提高运动成绩、预防损伤和肌肉骨骼损伤后的康复。
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Variations in upper limb and trunk muscles activation during isometric exercises with or without exertion of control
BACKGROUND: Muscle activation during isometric contraction can be changed using an external-focus instruction method. OBJECTIVE: To explore and compare the activity of eight upper limb and trunk muscles during isometric chest squeeze exercises, performed in the same posture with and without the exertion of control to avoid crushing an object. METHODS: Muscle activation by an isometric chest squeeze with 45∘ shoulder abduction and forearm pronation was examined. Isometric chest squeeze exercises were performed while holding objects with maximum pressure, and with exerted control to avoid crushing the object Muscle activation was measured by surface electromyography. RESULTS: During the exercises performed while exerting control to avoid crushing the object the lower trapezius (p< 0.001) and latissimus dorsi (p= 0.03) showed significantly higher activity. During the exercises performed without control, the upper trapezius, serratus anterior, and pectoralis major showed significantly higher activity (p= 0.016, p< 0.001, p< 0.001, respectively). CONCLUSIONS: This novel isometric exercise can increase the scapular muscles in the intermediate range of the glenohumeral joint. Therefore, it may assist in improving sport performance, in preventing injuries and in rehabilitation following musculoskeletal injuries.
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来源期刊
Isokinetics and Exercise Science
Isokinetics and Exercise Science 医学-工程:生物医学
CiteScore
1.20
自引率
14.30%
发文量
37
审稿时长
>12 weeks
期刊介绍: Isokinetics and Exercise Science (IES) is an international journal devoted to the study of theoretical and applied aspects of human muscle performance. Since isokinetic dynamometry constitutes the major tool in this area, the journal takes a particular interest in exploring the considerable potential of this technology. IES publishes studies associated with the methodology of muscle performance especially with respect to the issues of reproducibility and validity of testing, description of normal and pathological mechanical parameters which are derivable from muscle testing, applications in basic research topics such as motor learning paradigms and electromyography. The journal also publishes studies on applications in clinical settings and technical aspects of the various measurement systems employed in human muscle performance research. The journal welcomes submissions in the form of research papers, reviews, case studies and technical reports from professionals in the fields of sports medicine, orthopaedic and neurological rehabilitation and exercise physiology.
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