| Project/Area Number |
19800010
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (Start-up)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Sports science
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
SASAKI Kazushige The University of Tokyo, 大学院・総合文化研究科, 助教 (00451849)
|
|---|
| Project Period (FY) |
2007 – 2008
|
| Project Status |
Completed (Fiscal Year 2008)
|
| Budget Amount *help |
¥2,958,000 (Direct Cost: ¥2,580,000、Indirect Cost: ¥378,000)
Fiscal Year 2008: ¥1,638,000 (Direct Cost: ¥1,260,000、Indirect Cost: ¥378,000)
Fiscal Year 2007: ¥1,320,000 (Direct Cost: ¥1,320,000)
|
|---|
| Keywords | 生理学 / 老化 / 骨格筋 / 筋収縮 / 電気刺激 / 筋音図 / 直列弾性要素 |
|---|
| Research Abstract |
The purpose of this study was to develop a new method determining in vivo maximal unloaded shortening velocity (V_0), which represents an intrinsic property of human skeletal muscle, and to investigate its age-related changes. The results suggest that 1) V_0 can be measured in vivo, from the time lag between the onset of muscle contraction and the beginning of joint torque development, and 2) V_0 is well above the maximal shortening velocity estimated from the voluntary human movement. However, further methodological improvement especially in artifact removal is necessary for studying age-related changes in V_0.
|
