Surface electromyography activity of the rectus abdominis, internal oblique, and external oblique muscles during forced expiration in healthy adults

Abstract We aimed to characterize rectus abdominis, internal oblique, and external oblique muscle activity in healthy adults under expiratory resistance using surface electromyography. We randomly assigned 42 healthy adult subjects to 3 groups: 30%, 20%, and 10% maximal expiratory intraoral pressure...

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Bibliographic Details
Published in:Journal of electromyography and kinesiology 2016-06, Vol.28, p.76-81
Main Authors: Ito, Kenichi, Nonaka, Koji, Ogaya, Shinya, Oogi, Atsushi, Matsunaka, Chiaki, Horie, Jun
Format: Article
Language:English
Subjects:
Abdominal Oblique Muscles - physiology
Adult
Back Muscles - physiology
Electromyography
Exhalation
Expiratory muscle training
External oblique muscle
Female
Forced expiration
Humans
Internal oblique muscle
Male
Physical Medicine and Rehabilitation
Rectus Abdominis - physiology
Rectus abdominis muscle
Surface electromyography
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Summary:Abstract We aimed to characterize rectus abdominis, internal oblique, and external oblique muscle activity in healthy adults under expiratory resistance using surface electromyography. We randomly assigned 42 healthy adult subjects to 3 groups: 30%, 20%, and 10% maximal expiratory intraoral pressure (PEmax). After measuring 100% PEmax and muscle activity during 100% PEmax, the activity and maximum voluntary contraction of each muscle during the assigned experimental condition were measured. At 100% PEmax, the external oblique (p < 0.01) and internal oblique (p < 0.01) showed significantly elevated activity compared with the rectus abdominis muscle. Furthermore, at 20% and 30% PEmax, the external oblique (p < 0.05 and
ISSN:1050-6411
1873-5711
DOI:10.1016/j.jelekin.2016.03.007