Electromyographic activities of the abdominal muscles during 30% and 75% of maximum expiratory pressure

Abstract The aim of this study was to quantify the activities of the rectus abdominis (RA), external oblique (EO), and internal oblique (IO) muscles during 30% and 75% of maximum expiratory pressure (PE max). Fifteen healthy male university students participated in this study. Electromyographic (EMG...

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Bibliographic Details
Published in:	Journal of bodywork and movement therapies Vol. 21; no. 4; pp. 794 - 797
Main Authors:	Ishida, Hiroshi, Fujisawa, Mai, Yokoyama, Ryo, Suehiro, Tadanobu, Watanabe, Susumu
Format:	Journal Article
Language:	English
Published:	United States Elsevier Ltd 01-10-2017
Subjects:	Abdominal Oblique Muscles - physiology Electromyography Humans Male Maximal Respiratory Pressures Muscle Strength Physical Medicine and Rehabilitation Rectus Abdominis - physiology Respiration Young Adult
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Summary:	Abstract The aim of this study was to quantify the activities of the rectus abdominis (RA), external oblique (EO), and internal oblique (IO) muscles during 30% and 75% of maximum expiratory pressure (PE max). Fifteen healthy male university students participated in this study. Electromyographic (EMG) activities of the RA, EO, and IO muscles were measured during 30% and 75% of PE max and then normalized relative to maximum voluntary contractions (%MVC). All muscles during 75% of PE max showed significantly higher %MVC compared to that during 30% of PE max ( P < 0.01). The EO and IO muscles showed significantly higher %MVC compared to the RA muscle during 30% and 75% of PE max ( P < 0.05). Muscle endurance and strength induced by expiratory muscle strength training might be different in each abdominal muscle.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1360-8592 1532-9283
DOI:	10.1016/j.jbmt.2016.12.004