Effects of trunk belt on the dynamics of rowers

doi:10.6590/TJSSR.2010.06.02

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Title:	Effects of trunk belt on the dynamics of rowers
Other Titles:	腰帶使用對划船運動員軀幹動能之影響
Authors:	陳文和;Chen, Wen-Her;謝伸裕;Hsieh, Sandy S.
Contributors:	淡江大學體育事務處
Keywords:	划船;腰帶;動力學;肌電圖;軀幹;rowing;trunk belt;dynamics;EMG;Intra-abdominal pressure;trunk
Date:	2010-06
Issue Date:	2013-03-06 14:54:51 (UTC+8)
Publisher:	桃園縣：國立體育大學
Abstract:	腰帶在運動中的使用大都在舉重或健美等力量型的項目上，對豎脊肌群等需要承擔很大阻力的運動中有非常重要的作用。目的：探討划船選手使用腰帶對軀幹肌肉肌電訊號、划槳動能的影響。方法：以十名大學男性划船選手（年齡20.3±1.1歲；身高176.8±5.0公分；體重71.9±10.1公斤），在安裝拉力計(Loadcell)的划船測功儀上實施使用及不使用腰帶各十槳的衝刺划槳測驗，同步記錄划槳過程中豎脊肌、腹直肌與腹外斜肌肌電圖及拉槳過程中之拉力值。結果：（一）動力學方面：有無使用腰帶在最大力量（574.2±40.7v.s559.5±59.4牛頓）、平均力量（984.1±94.0v.s954.3±99.5牛頓）、時間－力量曲線（380.8±29.5v.s368.2±34.6牛頓秒）及斜率（3260.5±410.7v.s3323.5±420.1牛頓∕秒）均無顯著差異；（二）各肌肉正規化數值在有無使用腰帶下，豎脊肌(0.154±0.024v.s0.142±0.032)、腹直肌(0.150±0.041v.s0.154±0.032)與腹外斜肌(0.120±0.029v.s0.103±0.043)均無顯著差異。結論：在高強度的划船運動中，使用腰帶並無法減緩軀幹肌群的負荷，也無法穩定軀幹增加划船效能，划船時腰帶的使用，在動力學上的價值尚需進一步的討論。 Trunk belt was used mostly for weightlifting, body-building and resistance training. It was quite vital for the protection of erector spinae. Purposes: To assess the effects of electromyography of trunk muscles and the dynamics of rowers using a trunk belt. Methods: Ten (10) university male rowers (age 20.3±1.1 years; height 176.8±5.0 cm; weight 71.9±10.1 kg) used trunk belt and perform sprint rowing for 10 oars on rowing ergometer. Load cell was used to record force and the electromyography of erector spinae, rectus abdominis were simultaneously recorded. Results: (1) Dynamics: No significant differences were observed between trunk belt and without trunk belt in peak force (574.2±40.7 v.s 559.5±59.4 NT), mean force (984.1±94.0 v.s 954.3±99.5 NT), integrated force (80.8±29.5 v.s 368.2±34.6 NT(superscript )sec) and slope (3260.5±410.7 v.s 3323.5±420.1 NT/sec). (2) EMG signals: The normalized values of erector spinae (0.154±0.024 v.s 0.142±0.032), rectus (0.150±0.041 v.s 0.154±0.032) and ecternal oblique (0.120±0.029 v.s 0.103±0.043) also show no differences between trunk belt and without trunk belt. Conclusions: The use of trunk belt can not reduce rowers' back loads. Also, trunk belt can not improve the mechanics of rowing. The value of trunk belt use in rowing need further discussion.
Relation:	台灣體育學術研究 48, p.21-37
DOI:	10.6590/TJSSR.2010.06.02
Appears in Collections:	[Graduate Institute of Senior Healthcare Management] Journal Article

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