title: [Morphofunctional characteristics of enzyme activity of the muscles in ontogenesis and after physical load].
abstract: By means of histochemical methods using cytospectrophotometer in femoral muscles of white rats 1-, 3- and 12-month-old enzymatic activity of anaerobic and aerobic cycles has been estimated. The greatest changes occur after 20 days of physical load in 1- and 12-month-old animals. The semitendinous muscle (ventral origin), consisting mainly of red muscle fibers, works chiefly in aerobic regime and possesses a more manifested succinate dehydrogenase activity, and the quadriceps muscle (dorsal origin) consists principally of white fibers and its lactate dehydrogenase activity changes more noticeably.
authors.forename: V N
authors.initials: VN
authors.lastname: Kramskikh
authors.forename: N G
authors.initials: NG
authors.lastname: Samoĭlov
mesh_terms: D000375:Aging / Q000378:metabolism*; D000818:Animals; D002452:Cell Count; D006614:Hindlimb; D007770:L-Lactate Dehydrogenase / Q000378:metabolism*; D008297:Male; D009132:Muscles / Q000166:cytology / Q000201:enzymology*; D005082:Physical Exertion; D051381:Rats; D013385:Succinate Dehydrogenase / Q000378:metabolism*
chemical_list: D007770:L-Lactate Dehydrogenase; D013385:Succinate Dehydrogenase
vernacular_title: Morfofunktsional'naia kharakteristika fermentativnoĭ aktivnosti myshts v ontogeneze i pri fizicheskoĭ nagruzke.