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Selective glycogen depletion pattern in human muscle fibres after exercise of varying intensity and at varying pedalling rates
1. Glycogen depletion pattern in human skeletal muscle fibres was studied after bicycle exercise of varying intensity performed at different pedalling rates. Work intensities studied were equivalent
Enzyme activity and fiber composition in skeletal muscle of untrained and trained men.
Succinate dehydrogenase and phosphofructokinase activities and the histochemical identification of fiber types and localization of oxidative activity were determined on biopsy samples from the vastus lateralis and deltoid muscles of 74 untrained and trained men.
Anaerobic energy production and O2 deficit‐debt relationship during exhaustive exercise in humans.
Estimated leg oxygen deficit corresponded to an ATP production of 94.7 mmol ATP kg‐1 and total reduction in ATP and CP (and elevation of IMP) during the intense exercise amounted to 16.4 mmol ATP‐1, which together with the lactate production accounted for 83.1 mmol ATP (kg wet wt)‐1.
Skeletal Muscle Adaptability: Significance for Metabolism and Performance
The sections in this article are: Fiber Composition in Human Skeletal Muscle, Motor Unit Recruitment, Adaptive Response, and Significance of Adaptation.
Human fiber size and enzymatic properties after 5 and 11 days of spaceflight.
Adaptions in the size, metabolic properties, and vascularity of muscle fibers can occur rapidly in the space environment were qualitatively similar to those observed in animals after actual or simulated spaceflight conditions for short periods.
Muscle metabolism and enzyme activities after training in boys 11-13 years old.
The effect of training on the skeletal muscle metabolism of 11-to 13-year-old boys was examined and fiber distribution was unchanged by training but the oxidative capacity of both fiber types appeared to increase.
Effect of training on enzyme activity and fiber composition of human skeletal muscle.
The effect of a 5month training program on the oxidative and anaerobic capacity, fiber composition, fiber area, and glycogen concentration of multiple biopsy samples from the vastus lateralis muscle of six subjects was studied.
Muscular enlargement and number of fibers in skeletal muscles of rats.
Data demonstrate that hypertrophy rather than hyperplasia was responsible for increases from 10 to over 100% in the weight of skeletal muscles.
Significance of skeletal muscle oxidative enzyme enhancement with endurance training.
A theoretical model is proposed to explain how the increase in mitochondrial protein concentration, and therefore of the oxidative enzymes, that occurs with endurance training could operate to alter
Biochemical Adaptations to Exercise Anaerobic Metabolism