Differential adaptation to weightlessness of functional and structural characteristics of rat hindlimb muscles |
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| Authors: | Stevens L Picquet F Catinot M P Mounier Y |
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| Affiliation: | Laboratoire de Physiologie des Structures Contractiles, Universite des Sciences et Technologies de Lille, France. |
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| Abstract: | Soleus, vastus intermedius, tibialis anterior, and extensor digitorum longus muscles were removed from rats following space flight onboard the SLS-2 mission and from control animals. Muscle tissues were studied for their calcium and strontium activated tension characteristics and for structural changes. Muscles were also examined for myosin composition using electrophoresis. Results indicate that changes occurred in structural and functional muscle characteristics in both slow and fast muscle fiber types. These results are detailed and discussed. |
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