Slow Expiration Reduces External Oblique Muscle Activity during Maximum Trunk
Flexion |
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| Authors: | Hiroshi Ishida Saya Tajima Riyo Masuno Yoshiko Kogame Suguru Ando Katsuhiko Yokohata Susumu Watanabe |
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| Institution: | 1) Department of Rehabilitation, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, Japan;2) Department of Rehabilitation, Ishikawa Hospital, Japan;3) Department of Rehabilitation, Mizushima Kyodo Hospital, Japan;4) Department of Physical Therapy, Kurashiki Heisei Hospital, Japan;5) Department of Physical Therapy, Kurashiki Daiichi Hospital, Japan |
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| Abstract: | Purpose] The purpose of this study was to demonstrate the effects of expiration on
abdominal muscle activity during maximum trunk flexion. Subjects] Twenty-one healthy
university students (10 men, 11 women) participated in this study. Methods]
Electromyography (EMG) was used to quantify the activity of the right rectus abdominis,
external oblique, and internal oblique muscles. The paired t-test was used to examine the
significance of differences in the abdominal muscles between maximum trunk flexion with
breath holding and slow expiration. Results] There was a significantly lower EMG activity
in the external oblique muscle during maximum trunk flexion with slow expiration.
Conclusion] The results of this study indicate that slow expiration reduces external
oblique muscle activity during maximum trunk flexion performed by healthy young
subjects.Key words: Expiration, Electromyography, Abdominal muscles |
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