Medycyna Wet. 62 (3), 306-310, 2006
Procajło A.
Diagnostic efficacy of indicators of muscle damage in sled dogs during training
Uncontrolled and over-intensive training can lead to a decrease in exercise efficiency and health state disorders in dogs. Examinations of sled dogs revealed that prolonged effort induced specific biochemical changes and released indicatory enzymes into peripheral circulation. The purpose of the study was to reveal the efficacy of selected markers of aspartate aminotransferase (AST), creatine kinase (CK), lactate dehydrogenate (LDH) and their isoenzymes, C-reactive protein (CRP), glucose and lactic acid in detecting sub clinical states of skeletal muscles lesions. Examinations were carried out on 17 sled dogs (Siberian Husky, Alaskan Malamut) at the start, during and end of the training season, before and after exercise. Dogs were in good condition before study and did not revealed clinical symptoms of disease. During progressively extended training loads a decrease in the motor activity of some dogs was noted. An increase in the activity of AST, CK and LDH5 in the examined dogs confirmed these changes and testified to skeletal muscle injury. The lack of adaptation of organism efficiency to excessive trainings loads also caused an increase in the concentration of glucose and lactic acid in the plasma of the sled dogs. C-reactive protein and inflammatory state markers were also designated to estimate of health state of the dogs. An increase of CRP concentration, noted in the examined dogs, could testified to inflammatory states of muscles or may have be connected with exercise stress. Clinical symptoms confirmed these changes. A lack of physical adaptation to the intensity of training leads to muscle injuries. Measurements of muscle injury markers during excessive load training facilitate the recognition of hyper-training states and muscles injuries in sled dogs.
Keywords: sled dogs, skeletal muscles