The Effect of a Growth-Promoting Drug, Clenbuterol, on Fiber Frequency and Area in Hindlimb Muscles from Young Male-Rats

C A Maltin, Margaret Inkster Delday, P J Reeds

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The effect of dietary administration of clenbuterol on soleus and extensor digitorum longus muscles was studied after 4 and 21 days. Both muscles showed an increase in wet weight with no significant change in total fibre number. After 4 days fibre cross-sectional areas were increased in soleus, but not in extensor digitorum longus, and after 21 days there was a change in fibre frequencies in extensor digitorum longus but not soleus muscles.
Original languageEnglish
Pages (from-to)293-299
Number of pages7
JournalBioscience Reports
Issue number3
Publication statusPublished - Mar 1986


  • clenbuterol
  • muscle fibres

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