Key result
Competitive child cyclists exhibited greater VO2max (60.0 vs 47.0 mL/kg/min) and maximal stroke index (76 vs 60 mL/m2) than untrained boys, driven by higher resting stroke volumes.
Why the study?
Do highly trained child endurance athletes exhibit different hemodynamic responses to progressive cycle exercise compared to untrained age-matched boys?
Population
46 boys, including 7 competitive child cyclists (mean age 11.9 years) and 39 age-matched untrained boys.
Comparison
Progressive cycle exercise vs Age-matched untrained boys
Design
Cross-sectional
Authors
Loading...
Supports resting stroke volume as key VO2max driver in trained boys; leaves open training causality and needs longitudinal confirmation.
Cross-Sectional (n=46)
Do highly trained child endurance athletes exhibit different hemodynamic responses to progressive cycle exercise compared to untrained age-matched boys?
Absolute Event Rate: 60% vs 47%
In child endurance athletes, a higher VO2max is primarily driven by a greater resting and maximal stroke volume rather than enhanced stroke volume augmentation or arteriovenous oxygen extraction during exercise.
Rowland et al. (2000) conducted a cross-sectional in Healthy (n=46). Competitive cycling training vs. Untrained boys was evaluated on VO2max (mL x kg(-1) x min(-1)). Competitive child cyclists exhibited greater VO2max (60.0 vs 47.0 mL/kg/min) and maximal stroke index (76 vs 60 mL/m2) than untrained boys, driven by higher resting stroke volumes.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: