Why the study?
Does endurance or strength training alter the levels of CK and LD isozymes in individual human muscle fibers compared to untrained controls?
Population
Age-matched endurance-trained athletes, strength-trained athletes, and untrained controls
Comparison
Endurance training and strength training vs Untrained controls
Design
Cross-sectional
Authors
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May support endurance-related fiber adaptations; leaves open causality and clinical relevance without longitudinal data.
Does endurance or strength training alter the levels of CK and LD isozymes in individual human muscle fibers compared to untrained controls?
Endurance exercise induces favorable metabolic adaptations of CK and LD isozymes at the individual muscle fiber level to cope with increased energy demands.
Per A. Tesch (1989) studied this question.
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