Electromyographic activities of the abdominal muscles during 30% and 75% of maximum expiratory pressure. Issue 4 (October 2017)

• Record Type: Journal Article
• Authors: Ishida, Hiroshi; Fujisawa, Mai; Yokoyama, Ryo; Suehiro, Tadanobu; Watanabe, Susumu
• Is Part Of: Journal of bodywork and movement therapies. Volume 21:Issue 4(2017:Oct.)
• Page Start: 794
• Page End: 797
• Publication Date: 2017-10
• Subjects: Massage -- Periodicals; Exercise therapy -- Periodicals; Manipulation (Therapeutics) -- Periodicals; Electronic journals; 615.82
• DOI: 10.1016/j.jbmt.2016.12.004
• Languages: English
• ISSNs: 1360-8592

Abstract

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.