Does heart-rate-variability-guided training work? Three meta-analyses of endurance training found small or non-significant performance gains over fixed plans
Oct 27
4 min read
Wearables now hand you a morning heart rate variability score and, often, a suggestion: train hard, train easy, or rest. The idea is sound on paper. A suppressed HRV reading should flag a body that has not recovered, so easing off on those days and pushing on the good ones should beat a programme written weeks in advance. The question for anyone paying attention to that number is simple: when training is actually adjusted by HRV, do people end up fitter or stronger than those following a fixed plan?
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