VOPROSY MEDITSINSKOI KHIMII (ISSN 0042-8809)

Adaptation of skeletal muscle and myocardium to increased motor activity in hypo- and athyroid rats

   
Seene T.P., Alev K.P., Tomson K.E., Viru A.A.
PubMed Id: 6177099
Year: 1982  Volume: 28  Issue: 2  Pages: 20-24
Changes in contractility and synthesis of protein were studied in different types of muscles of hypo- and athyroid ratts during adaptation to physical exercise. Intensity of the exercises used corresponded to metabolic power output of 70% VO2max. Thyroidectomy caused a significant decrease in Mg2+ activated actomyosin ATPase activity and in content of RNA in myocardium and in fast oxidative-glycogenolytic and glycogenolytic skeletal muscle fibers. Exercises, intensity of which corresponded to metabolic power output of 70% VO2max led to a more distinct decrease in Mg2+ activated actomyosin ATPase activity in fast glycogenolytic muscle fibers, but in fast oxidative-glycogenolytic fibers the enzymatic activity was increased up to the level comparable with that of intact animals. Rhysical working capacity of athyroid rats was lower by 40% as compared with intact trained animals. Hypothyroidism, induced by means of administration of KJ into previously trained rats, caused a decrease in physical working capacity by 25%.
Download PDF:  
Citation:

Seene, T. P., Alev, K. P., Tomson, K. E., Viru, A. A. (1982). Adaptation of skeletal muscle and myocardium to increased motor activity in hypo- and athyroid rats. Voprosy Meditsinskoi Khimii, 28(2), 20-24.
References
 1984 (vol 30)
 1983 (vol 29)
 1982 (vol 28)
 1981 (vol 27)
 1980 (vol 26)
 1979 (vol 25)
 1978 (vol 24)
 1977 (vol 23)
 1976 (vol 22)
 1975 (vol 21)
 1974 (vol 20)
 1973 (vol 19)
 1972 (vol 18)
 1971 (vol 17)
 1970 (vol 16)
 1969 (vol 15)
 1968 (vol 14)
 1967 (vol 13)
 1966 (vol 12)
 1965 (vol 11)
◄        ►