Key result
Long-term resistance exercise induced muscle fiber hypertrophy that accounted for greater absolute force and power, without altering intrinsic contractility compared to sedentary controls.
Why the study?
Does long-term resistance exercise alter the intrinsic contractile properties of skeletal muscle fibers in males?
Population
12 males, comprising 6 sedentary males and 6 males who participated in regular resistance exercise training…
Comparison
Long-term resistance exercise training vs Sedentary lifestyle (no resistance training)
Design
Cross-sectional
Authors
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Supports hypertrophy-focused training for force gains; leaves open causal effects on contractility in longitudinal studies.
Observational (n=12)
Does long-term resistance exercise alter the intrinsic contractile properties of skeletal muscle fibers in males?
Long-term resistance exercise increases absolute muscle fiber force and power through hypertrophy, without altering intrinsic contractility when normalized to fiber dimensions.
Shoepe et al. (2003) reported an observational. Long-term resistance exercise vs. Sedentary lifestyle was evaluated on Functional properties of muscle fibers including peak Ca2+-activated force, unloaded shortening velocity, and peak power. Long-term resistance exercise induced muscle fiber hypertrophy that accounted for greater absolute force and power, without altering intrinsic contractility compared to sedentary controls.
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