Key result
Submaximal treadmill exercise significantly decreased QRS duration by a mean of 4.9 ms (P<0.0005) in healthy men, reflecting enhanced ventricular conduction.
Why the study?
Does submaximal treadmill exercise reduce QRS duration in healthy men?
Observational (n=36)
Does submaximal treadmill exercise reduce QRS duration in healthy men?
Mean Difference: -4.9
p-value: p=<0.0005
Submaximal treadmill exercise physiologically shortens QRS duration in healthy men, reflecting enhanced ventricular conduction.
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Hypothesis-generating for exercise effects on conduction in healthy hearts; prospective studies needed before relevance to disease states.
Goldberger et al. (1983) conducted an observational in Healthy (n=36). Submaximal treadmill exercise vs. Rest (baseline) was evaluated on Change in QRS duration (MD -4.9 ms, p=<0.0005). Submaximal treadmill exercise significantly decreased QRS duration by a mean of 4.9 ms (P<0.0005) in healthy men, reflecting enhanced ventricular conduction.
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