著者
河端 将司 加賀谷 善教 島 典広 西薗 秀嗣
出版者
一般社団法人日本体力医学会
雑誌
体力科学 (ISSN:0039906X)
巻号頁・発行日
vol.57, no.2, pp.225-234, 2008-04-01 (Released:2008-08-13)
参考文献数
38
被引用文献数
5 4

This study examined changes in intra-abdominal pressure and trunk activation during drop jump and the influence of those factors on performance. Intra-abdominal pressure (IAP) and surface electromyography (EMG) activity from the rectus abdominis (RA), transversus abdominis-internal oblique (TrA-IO) and erector spinae (ES) muscles were measured in seven males (22.3±1.0 years) during double-leg drop jumps from a 0.4 m height. Development of IAP (ΔIAP) and normalized rmsEMGs were calculated in the pre-contact, impact and push-off phases, after divided by ground reaction force data. TrA-IO activation which occurred prior to ground contact were the earliest and strongest compared to other muscles activation during each phase.ΔIAP during the impact phase coincided with the peak vertical force. There were significant positive correlations between ΔIAP, TrA-IO activation and vertical force per weight. In addition, the contact time correlated negatively with ΔIAP, TrA-IO activation and vertical force per weight. These findings indicate that ΔIAP and TrA-IO activation may contribute to trunk stability and efficient landing during double-leg drop jump.

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外部データベース (DOI)

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体幹、腹圧の観点から書かれてるのは初めてみたかも。興味深い。 https://t.co/2aTod1VTTs
腹腔内圧 ドロップジャンプ 接地時間減少 https://t.co/c2QdICONlT
✅ドロップジャンプにおいて腹横筋・内腹斜筋は、着地から他の筋より先行し活動する ✅地面反力の大きさに比例して腹横筋・内腹斜筋の活動量も増加する 動作時の先行した腹横筋の収縮はフィードフォワード作用としても知られている。 https://t.co/mV3Y42GZZ5 https://t.co/tcG6N1EFU9

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