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J Phys Ther Sci. 2019 Jan;31(1):33-35. doi: 10.1589/jpts.31.33. Epub 2019 Jan 10.

The effect of leg angle during push-up plus exercise on shoulder stabilization muscle activity.

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1
Department of Physical Therapy, U1 University: 12 Youngdong-eup, Youngdong-gun, Chungbuk, Republic of Korea.

Abstract

[Purpose] This study investigated the effect of different leg angles during push-up plus exercise on shoulder stabilization muscle activity. [Participants and Methods] Fifteen healthy adult males participated in this study. The smart phone application Clinometer was used to measure leg angles of 70°, 90°, and 110° during push-up plus exercise. The muscle activities of the serratus anterior, upper trapezius fibers, and pectoralis major muscles involved in shoulder stabilization were analyzed using surface electromyogram. [Results] Leg angle significantly affected serratus anterior muscle activity, but it did not affect activities of the upper trapezius fibers or pectoralis major muscles. Post-hoc analysis revealed that serratus anterior muscle activity at the leg angle of 110° was significantly higher than at leg angles of 70° and 90°. [Conclusion] A higher leg angle during push-up plus exercise is a more effective intervention for the serratus anterior muscle activity.

KEYWORDS:

Leg angle; Push-up plus; Shoulder stabilization

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