Key result
High cardiovascular fitness was associated with significantly larger stroke volumes, longer left ventricular ejection times, and lower PEP/LVET ratios compared to lower fitness levels (P<0.05).
Why the study?
Does cardiovascular fitness level affect left ventricular function during exercise in young men?
Population
30 young men divided into three groups of 10 representing average, moderate, and high levels of…
Comparison
Bicycle ergometer work at steady-state heart… vs Comparison across three fitness levels
Design
Cross-sectional
Authors
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No practice change from cross-sectional LV associations; leaves open causal effects of fitness on exercise hemodynamics.
Cross-Sectional (n=30)
Does cardiovascular fitness level affect left ventricular function during exercise in young men?
p-value: p=<0.05
Higher cardiovascular fitness is associated with superior mean left ventricular performance during exercise, though systolic time intervals alone are insufficient to describe individual fitness.
Wolfe et al. (1978) conducted a cross-sectional in Cardiovascular fitness (n=30). High cardiovascular fitness (VO2max = 59-72 ml.kg-1.min-1) vs. Average and moderate cardiovascular fitness was evaluated on Left ventricular systolic time intervals, cardiac output, and arterial blood pressures during exercise (p=<0.05). High cardiovascular fitness was associated with significantly larger stroke volumes, longer left ventricular ejection times, and lower PEP/LVET ratios compared to lower fitness levels (P<0.05).
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