title: Changes in speed of contraction and ATPase activity in striated muscle during old age.
mesh_terms: D000251:Adenosine Triphosphatases / Q000378:metabolism*; D000375:Aging; D000818:Animals; D009119:Muscle Contraction; D009132:Muscles / Q000201:enzymology*; D051381:Rats
chemical_list: D000251:Adenosine Triphosphatases