Ishida Hiroshi, Fujisawa Mai, Yokoyama Ryo, Suehiro Tadanobu, Watanabe Susumu
Department of Rehabilitation, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, Japan.
Department of Rehabilitation, Murakami Memorial Hospital, Japan.
J Bodyw Mov Ther. 2017 Oct;21(4):794-797. doi: 10.1016/j.jbmt.2016.12.004. Epub 2016 Dec 22.
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.
本研究的目的是量化在最大呼气压力（PE max）的30%和75%时腹直肌（RA）、腹外斜肌（EO）和腹内斜肌（IO）的活动。15名健康的男性大学生参与了本研究。在PE max的30%和75%期间测量RA、EO和IO肌肉的肌电图（EMG）活动，然后相对于最大自主收缩（%MVC）进行标准化。与PE max的30%相比，在PE max的75%时所有肌肉的%MVC均显著更高（P < 0.01）。在PE max的30%和75%时，EO和IO肌肉的%MVC显著高于RA肌肉（P < 0.05）。呼气肌力量训练所诱导的肌肉耐力和力量在每块腹肌中可能有所不同。
