Meta-Analysishigh evidence
Effects of Low-Intensity Endurance Training on Aerobic Fitness and Risk Factors of Cardiometabolic Health in Working-Age Adults: A Systematic Review and Meta-Analysis.
Scandinavian journal of medicine & science in sports·January 1, 2026·PMID 41543030
Why it mattersFor clinicians counseling generally healthy adults, this supports that exercise below VT1 can still meaningfully improve aerobic fitness and modestly improve cardiometabolic markers. It is useful when patients cannot tolerate or will not perform moderate- to high-intensity training.
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