Optimisation of assessment of maximal rate of heart rate increase for tracking training-induced changes in endurance exercise performance.

ABSTRACT: The maximal rate of heart rate (HR) increase (rHRI), a marker of HR acceleration during transition from rest to submaximal exercise, correlates with exercise performance. In this cohort study, whether rHRI tracked performance better when evaluated over shorter time-periods which include a greater proportion of HR acceleration and less steady-state HR was evaluated. rHRI and five-km treadmill running time-trial performance (5TTT) were assessed in 15 runners following one week of light training (LT), two weeks of heavy training (HT) and 10-day taper (T). rHRI was the first derivative maximum of a sigmoidal curve fit to one, two, three and four minutes of R-R data during transition from rest to running at 8?km/h (rHRI8?km/h), 10.5?km/h, 13?km/h and transition from 8 to 13?km/h (rHRI8-13km/h). 5TTT time increased from LT to HT (effect size [ES] 1.0, p?

SUBMITTER: Nelson MJ 

PROVIDER: S-EPMC7018735 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature