Influence of muscle cooling on the passive mechanical properties of the human gastrocnemius muscle

Tetsuro Muraoka*, Kohei Omuro, Taku Wakahara, Tetsuo Fukunaga, Kazuyuki Kanosue

*この研究の対応する著者

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

The purpose of the present study was to examine the influence of muscle cooling on the passive mechanical properties of the human gastrocnemius muscle (GAS) in vivo. In a thermoneutral (a room temperature of 18-23°C) and a local cooling (placing the right lower leg into cold water with a temperature of 5-8°C for 60 min) conditions, the change in passive plantarflexion force (F), which is produced only by the GAS length change, was taken in five subjects during passive knee extension from 90° to 0° with a constant ankle joint angle of 10° dorsiflexion. To evaluate an elastic component of the passive plantarflexion force of GAS, the subject held full knee extended position for 1 min (i.e. relaxation period). Skin and muscle temperature of GAS were also measured using a core temperature thermistor. The peak value of F (Fve) that was measured at the end of the knee extension phase, the decrease of F (ΔF) during the relaxation period, and the F at the end of the relaxation period (Fe) were measured in the two conditions. Muscle cooling decreased the skin and muscle temperature by 6.7 ± 1.1°C and 8.1 ± 2.5°C, respectively. Fve increased by 24% ± 22% by muscle cooling. ΔF in the thermoneutral and local cooling conditions were 11.5 ± 4.9 N and 12.5 ± 2.9 N, respectively. Fe increased by 28% ± 21% by muscle cooling. These results suggested that muscle cooling increased an elastic component of the passive force arisen from GAS and seemed not to affect its viscous component.

本文言語English
ホスト出版物のタイトルProceedings of the 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
出版社Institute of Electrical and Electronics Engineers Inc.
ページ19-21
ページ数3
ISBN(印刷版)0780387406, 9780780387409
DOI
出版ステータスPublished - 2005
外部発表はい
イベント2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005 - Shanghai, China
継続期間: 2005 9月 12005 9月 4

出版物シリーズ

名前Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
7 VOLS
ISSN(印刷版)0589-1019

Conference

Conference2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
国/地域China
CityShanghai
Period05/9/105/9/4

ASJC Scopus subject areas

  • 信号処理
  • 生体医工学
  • コンピュータ ビジョンおよびパターン認識
  • 健康情報学

フィンガープリント

「Influence of muscle cooling on the passive mechanical properties of the human gastrocnemius muscle」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル