Long-term intra-individual reproducibility of heart rate dynamics during exercise and recovery in the UK Biobank cohort
Fig 3
Distribution of heart rate indices.
Distribution of heart rate indices during first and second exercise stress test (EST1 and EST2). Every HR index decreased during EST2 with respect to EST1. The decrease was small (<4%) but consistent across individuals. (***) p<5·10−4 (Paired, two-sided Wilcoxon signed rank test).