Key result
VO2 max correlates strongly with cardiac dimensions, but body size primarily drives the association.
Why the study?
The relation between maximal gas transport capacity (VO2 max) and cardiac size in children, and the interaction of growth and physical activity on this relation, was not well defined.
Comparison
Subjects with high VO2 max versus subjects with lower VO2 max
Design
Cross-sectional study with M-mode echocardiography and treadmill exercise testing
Authors
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Cardiac size associates with VO2 max in boys; leaves open independent effects of growth versus activity.
Cross-Sectional (n=117)
Effect estimate: r between 0.75 and 0.84
p-value: p=<0.05
Blimkie et al. (1980) reported a cross-sectional. Maximal gas transport capacity (VO2 max) vs. Lower VO2 max was evaluated on Correlation between VO2 max and cardiac size (LVIDd, SV, LVM) (r between 0.75 and 0.84, p=<0.05). Maximal gas transport capacity (VO2 max) was highly correlated with cardiac dimensions (0.75 < r < 0.84), but this relationship was mainly attributable to the shared influence of body size.
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