イトウ　サキコ   ITO SAKIKO   伊藤咲子    所属   医療保健学部 リハビリテーション学科　理学療法学専攻    職種   専任講師
言語種別	英語
発行・発表の年月	2021/12
形態種別	学術論文
査読	査読あり
標題	Chronological changes in neuromuscular cooperativeness before and after muscle fatigue loading using the silent period of the quadriceps and hamstrings in young female athletes.
執筆形態	共著
掲載誌名	Journal of Physical Therapy Science
掲載区分	国外
出版社・発行元	アイペック
巻・号・頁	33(12)
担当区分	筆頭著者
著者・共著者	Sakiko Ito-Oonishi, Masahiro Takemura, Akihiro Kanamori, Yasuaki Kusumoto, Shumpei Miyakawa
概要	[Purpose] Understanding the neuromuscular cooperativeness functions when an athlete is fatigued is essential in preventing sports injuries and examining post-injury return standards. This study aimed to investigate the kinds of changes in neuromuscular cooperativeness before and after fatigue loading. [Participants and Methods] Fifteen female university athletes were examined for chronological changes in neuromuscular cooperativeness. Muscle fatigue loading was performed using BIODEX (180°/s) during knee flexion and extension exercises on one side. Surface electromyography of the rectus femoris and biceps femoris was performed on both sides before and immediately, 5 minutes, 10 minutes, and 15 minutes after loading. The switching silent period and pre-motor time were calculated from the electromyographic waveforms to indicate neuromuscular cooperativeness. [Results] The switching silent periods in the loading side immediately and 5 minutes after loading were significantly prolonged compared with that before loading. [Conclusion] Muscle fatigue loading instantaneously prolonged the switching silent period and decreased the neuromuscular cooperativeness. Furthermore, recovery generally occurred within 10 minutes after loading.