オオクボ　ユウ   OKUBO Yu   大久保　雄    所属   埼玉医科大学  保健医療学部 理学療法学科    職種   准教授
論文種別	学術雑誌(原著)
言語種別	英語
査読の有無	査読あり
表題	Differential activation of psoas major and rectus femoris during active straight leg raise
掲載誌名	正式名：J Electromyog Kinesiol
掲載区分	国外
巻・号・頁	60,102588頁
著者・共著者	◎(Okubo Y), Kaneoka K, Hasebe K, Matsunaga N, Hodges P
発行年月	2021/08/10
概要	The purpose of this study was to investigate the activation of the hip flexor and abdominal muscles during an active straight leg raise (ASLR) to end range of hip flexion. Data were recorded from nine healthy men. Fine-wire electromyography (EMG) electrodes were inserted into psoas major (PM), and surface electrodes were placed over rectus femoris (RF), rectus abdominis, obliquus externus abdominis (OE), and obliquus internus abdominis/transversus abdominis (OI/TrA). Concentric and eccentric movements were divided into three phases (early, mid, and late). Onsets of the PM and RF EMG prior to leg elevation were significantly earlier than those of the OE and OI/TrA. PM EMG showed highest activation in the late concentric, hold, early eccentric phase, and was significantly higher than RF EMG. OI/TrA EMG was significantly greater in mid and late concentric, hold, and early eccentric phase than other phases. During the ASLR, PM EMG continues to increase towards the end range of hip flexion.