A reduced heart rate of three beats a minute during submaximal physical activity may reach statistical significance (greater than chance occurrence), yet confer little practical effect on altering aerobic fitness or cardiovascular function.

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Statistical significance indicates that an observed effect is likely not due to chance alone, but it does not necessarily imply that the effect is large or meaningful in a practical sense. A reduction of three beats per minute in heart rate during submaximal physical activity, while statistically significant, may be too small to have a substantial impact on improving aerobic fitness or overall cardiovascular function.

A Reduced Heart Rate of Three Beats a Minute During