ISSN:
1573-8221
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary The content of ATP, creatine phosphate, inorganic phosphate and lactic acid was studied in the isolated frog skeletal muscle at various stages of fatique caused by single maximal stimulations of the nerve. There is no lineal alteration in the content of the substances studied during the muscle work. Before the stage of abrupt decline of contractions the ATP content remains on the initial level, whereas the quantity of creatine phosphate rapidly decreases and the content of lactic acid manifests a sharp rise. The stage of abrupt decline, characterized by deceleration of the contraction and relaxation of the muscle, is the turning point in the development of fatigue. In this stage, along with further decrease of creatine phosphate and accumulation of lactic acid, there occurs a drop in the content of ATP in comparison with the level of rest.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00784540
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