Post‐exercise heart rate variability of endurance athletes after different high‐intensity exercise interventions

8 male endurance athletes

High-intensity exercise interventions: two interval interventions at 85% and 93% (IV(85) and IV(93)) and two continuous interventions at 80% and 85% (CO(80) and CO(85)) of the velocity at VO2max

Resting values and comparisons between the different exercise interventions

Immediate (5 min) and slow (30 min) recovery of heart rate variability (high frequency power, low frequency power, and total power)surrogate