중요한 탐구과제...
모르고 있구나라는 메타인지로 남겨둔다.
운동의 효과를 검사하기 위해서 22주 동안 33%는 박스 rest에 두고, 33%는 트레이닝을 시키고, 33%는 방목함.
3가지 그룹은 근섬유 타입조성에 차이를 보이지만, 이 차이점은 운동의 효과로 볼 수 있는 근거는 발견하지 못함.
결국 타고난다는 이야기!!
panic bird...
Changes in fibre type composition of gluteus medius and semitendinosus muscles of Dutch Warmblood foals and the effect of exercise during the first year postpartum.
Abstract
In order to obtain broader insights into the equine musculoskeletal system, we studied the fibre type composition of 2 locomotory muscles in biopsies from Dutch Warmblood foals taken at 3 different ages in the first year postpartum.
The muscle fibre types were determined histochemically as well as immunohistochemically. ATPase-characterised IIB fibres appear to express either IId or type lIa plus IId myosin heavy chain (MHC). A high percentage of fibres classified as IIA with ATPase expressed both fast types of MHC. The type I classification by the 2 methods matched almost completely.
근섬유 타입은 histochemically as well as immunohistochemically로 결정됨. myosin heavy chain
참고) 근섬유 분류는 type of myosin percent(slow or fast) 그리고 oxidative phosphorylation의 정도에 의해서 결정함.
There was an increase with age of fibres expressing I and IIa MHC in the gluteus medius. At the same time, there was a decrease of fibres expressing IId MHC and fibres co-expressing MHC IIa and IId. MHC expression of the semitendinosus muscle did not change over time at first, but from age 22-48 weeks there was a decrease in the percentage of type IId fibres.
In general, the gluteus medius contained more type I fibres but fewer type IId fibres compared to the semitendinosus. At most ages the fibre type compositions of both muscles correlated with one another.
To examine the effect of exercise, one-third of the foals were given box rest, one-third received training and one-third kept at pasture during the first 22 weeks of life. The 3 exercise groups differed in their fibre type composition; however, these differences could not be attributed to the effect of exercise.
운동의 효과를 검사하기 위해서 22주 동안 33%는 박스 rest에 두고, 33%는 트레이닝을 시키고, 33%는 방목함.
3가지 그룹은 근섬유 타입조성에 차이를 보이지만, 이 차이점은 운동의 효과로 볼 수 있는 근거는 발견하지 못함.