Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 1 de 1
Filtrar
Adicionar filtros








Intervalo de ano
1.
Yonsei Medical Journal ; : 690-702, 2004.
Artigo em Inglês | WPRIM | ID: wpr-206354

RESUMO

In order to elucidate muscle functional changes by acute reloading, contractile and fatigue properties of the rat soleus muscle were investigated at three weeks of hindlimb suspension and the following 1 hr, 5 hr, 1 d, and 2 weeks of reloading. Compared to age-matched controls, three weeks of unloading caused significant changes in myofibrillar alignments, muscle mass relative to body mass (-43%), normalized tension (-35%), shortening velocity (+143%), and response times. Further significant changes were not observed during early reloading, because the transitional reverse process was gradual rather than abrupt. Although most of the muscle properties returned to the control level after two weeks of reloading, full recovery of the tissue would require more than the two-week period. Delayed recovery due to factors such as myofibrillar arrangement and fatigue resistance was apparent, which should be considered for rehabilitation after a long-term spaceflight or bed-rest.


Assuntos
Animais , Ratos , Elevação dos Membros Posteriores , Ácido Láctico/metabolismo , Microscopia Eletrônica , Contração Muscular/fisiologia , Fadiga Muscular/fisiologia , Músculo Esquelético/citologia , Miofibrilas/ultraestrutura , Ratos Sprague-Dawley , Suporte de Carga/fisiologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA