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タイトル: | Time course of changes in passive properties of the gastrocnemius muscle-tendon unit during 5 min of static stretching. |
著者: | Nakamura, Masatoshi Ikezoe, Tome https://orcid.org/0000-0001-8546-5912 (unconfirmed) Takeno, Yohei Ichihashi, Noriaki https://orcid.org/0000-0003-2508-2172 (unconfirmed) |
著者名の別形: | 中村, 雅俊 |
キーワード: | Ultrasonography Passive torque Static stretching Muscle–tendon unit |
発行日: | Jun-2013 |
出版者: | Elsevier B.V. |
誌名: | Manual therapy |
巻: | 18 |
号: | 3 |
開始ページ: | 211 |
終了ページ: | 215 |
抄録: | The minimum time required for Static stretching (SS) to change the passive properties of the muscle-tendon unit (MTU), as well as the association between these passive properties, remains unclear. This study investigated the time course of changes in the passive properties of gastrocnemius MTU during 5 min of SS. The subjects comprised 20 healthy males (22.0 ± 1.8 years). Passive torque as an index of MTU resistance and myotendinous junction (MTJ) displacement as an index of muscle extensibility were assessed using ultrasonography and dynamometer during 5 min of SS. Significant differences before and every 1 min during SS were determined using Scheffé's post hoc test. Relationships between passive torque and MTJ displacement for each subject were determined using Pearson's product-moment correlation coefficient. Although gradual changes in both passive torque and MTJ displacement were demonstrated over every minute, these changes became statistically significant after 2, 3, 4, and 5 min of SS compared with the values before SS. In addition, passive torque after 5 min SS was significantly lower than that after 2 min SS. Similarly, MTJ displacement after 5 min SS was significantly higher than that after 2 min SS. A strong correlation was observed between passive torque and MTJ displacement for each subject (r = -0.886 to -0.991). These results suggest that SS for more than 2 min effectively increases muscle extensibility, which in turn decreases MTU resistance. |
著作権等: | © 2013 Elsevier B.V. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/174105 |
DOI(出版社版): | 10.1016/j.math.2012.09.010 |
PubMed ID: | 23294911 |
出現コレクション: | 学術雑誌掲載論文等 |
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