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  • Title: Activities of key enzymes of aerobic and anaerobic metabolism in middle gluteal muscle from trained and untrained horses.
    Author: Cutmore CM, Snow DH, Newsholme EA.
    Journal: Equine Vet J; 1985 Sep; 17(5):354-6. PubMed ID: 2996878.
    Abstract:
    The effect of physical training on the in vitro activities of key enzymes that provide quantitative information on the maximum capacities of anaerobic and aerobic metabolism has been investigated in the gluteal muscle of the horse. Training had no effect on the activities of 6-phosphofructokinase or creatine kinase, suggesting that there was no effect on the capacity of anaerobic metabolism in this muscle. However, the activities of hexokinase and citrate synthase were increased, indicating that training increased the capacity of aerobic metabolism. For comparative purposes, muscle fibre composition and enzyme activities were also determined in a group of foals and a group of broodmares.
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