Key result
Shorter ultra-short-term HRV segments increase bias vs. 180-second reference, especially at higher exercise intensities.
Why the study?
Ultra-short-term heart rate variability has been validated in the resting state, but its validity during exercise is unclear.
Does ultra-short-term HRV analysis accurately reflect HRV compared to a 180-second segment during varying intensities of cycling exercise in healthy adults?
Cross-Sectional (n=29)
No
Does ultra-short-term HRV analysis accurately reflect HRV compared to a 180-second segment during varying intensities of cycling exercise in healthy adults?
Ultra-short-term HRV analysis is feasible during cycling exercise, but the optimal time duration depends on exercise intensity, with shorter segments showing greater bias.
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Ultra-short-term HRV bias rises with shorter segments at moderate-high intensities; leaves open optimal durations for exercise monitoring pending validation.
Tanoue et al. (2023) conducted a cross-sectional in Healthy adults (n=29). Ultra-short-term heart rate variability (HRV) analysis vs. 180-second HRV analysis was evaluated on Validity of ultra-short-term HRV parameters compared to 180-second segment. The bias between ultra-short-term HRV and the 180-second reference increased as the time segment became shorter, particularly at moderate and high exercise intensities.