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An optimization study of the ultra-short period for HRV analysis at rest and post-exercise by Wu, Liang; Shi, Ping; Yu, Hongliu; Liu, Yang is a Medicine article available to read on EtoBox.

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## Background: Ultra-short-term heart rate variability (hrv) analysis (< 5 min) has been extensively growing in the field of exercise performance for autonomic assessment. however, the validation of ultra-short-term hrv was unclear in the recovery period of exercise. this study aimed to elucidate the agreement between ultra-short-term hrv (0-30 s, 0-1 min, 0-2 min, 0-3 min, 0-4 min) and standard short-term hrv (5 min) and to explore the optimal recording duration under rest and post-exercise conditions. ## Methods: 69 participants were recruited to perform physical exercise on a treadmill with an intensity of 6 km/h, 9 km/h and 12 km/h, independently. the standard deviation of rr-interval (sdnn) and root mean square of successive differences of rr-intervals (rmssd) were calculated by using ultra-short periods and standard period at rest condition (pre-e) and three post-exercise trials, i.e., post-e1, post-e2 and post-e3, respectively. one-way anova with repeated-measures and cohen's d statistics were conducted, and bland-altman analysis and interclass correlation coefficients (icc) were used to assess the levels of agreement. ## Results: For sdnn and rmssd, the results of agreement

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Author

Wu, Liang; Shi, Ping; Yu, Hongliu; Liu, Yang

Publisher

Elsevier Science; Elsevier ; Churchill Livingstone; Elsevier BV (ISSN 1532-8430)

Published

2020

Language

EN

Field

Medicine (Health Sciences)