2010 Fiscal Year Final Research Report
Changes in morphological and mechanical properties of muscle-tendon unit with aging
| Project/Area Number |
20509007
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Sports science
|
|---|
| Research Institution | Waseda University |
|---|
Principal Investigator |
KINUGASA Ryuta Waseda University, スポーツ科学学術院, 助教 (10409378)
|
|---|
| Project Period (FY) |
2008 – 2010
|
| Keywords | 歪み / 高齢者 / 腓腹筋 / 腱膜 |
|---|
| Research Abstract |
I hypothesized that during an isometric contraction, elderly people have greater longitudinal strain than young people. Aponeurosis longitudinal strain was greater in young people than in elderly people. The magnitude of fascicle shortening was significantly lower in elderly people than in young people. The "amplification" of muscle fascicle length changes into aponeurosis displacement has been termed the "gear ratio". The lower than unity value of the ratio implies that the aponeurosis displacement is lower than the fascicle length change. These results suggest that movement of the calcaneus would be constrained by due to lower aponeurosis longitudinal strain without amplification of the muscle fascicle length change.
|
