Agreement of Ultra-Short-Term Heart Rate Variability Recordings During Overseas Training Camps in Under-20 National Futsal Players

• DOI: 10.3389/fpsyg.2021.621399
• Publication Date: 2021-02-05T16:01:37Z
• Authors: Yung-Sheng Chen; Jeffrey C. Pagaduan; Pedro Bezerra; Zachary J. Crowle...; Cheng-Deng Kuo; Filipe Manuel Cle...
• Keywords: 03 medical and health sciences; 0302 clinical medicine; autonomic nervous system; ultra-short-term recording; heart rate variability; Psychology; overseas training camps; futsal training; BF1-990

Background: Monitoring the daily change in resting heart rate variability (HRV) can provide information regarding training adaptation and recovery status of autonomic nervous system (ANS) during camps. However, it remains unclear whether postural stabilization is essential for valid reliable ultra-short-term (HRV UST ) recordings short-term overseas Design: Observational longitudinal study. Purpose: This study aimed to investigate under or post-stabilization periods four Participant: Twenty-seven U-20 male national team futsal players voluntarily participated this Method: Resting HRV was evaluated 10 min early morning each camp. The natural logarithm root mean square successive normal-to-normal interval differences (LnRMSSD) used comparisons. Time segments were divided into two with three measures within each: (1) first 30-s (1st_30 s LnRMSSD), 60-s (1st_60 5-min standard (1st_5 LnRMSSD) stabilization; (2) (2nd_30 (2nd_60 (2nd_5 after stabilization. Result: results demonstrated trivial small ES (−0.03; 0.46), very large nearly perfect ICC (0.76; 0.98), narrow range SEM (0.06; 0.31) when all time compared 1st_5 2nd_5 HRV. Furthermore, magnitude correlation coefficients ranged from high ( r = 0.83; 0.97). posted excellent agreement (bias −0.05; 0.12) with/without Trivial levels effect size LnRMSSD (0.02; 0.41 ES) cv (−0.49; −0.02 across camps identified. Conclusion: 30 be evaluate cardiac-autonomic function players. process seems unnecessary measuring among young adult