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Article

Ultra-Short-Term and Short-Term Heart Rate Variability Recording during Training Camps and an International Tournament in U-20 National Futsal Players

1
Department of Exercise and Health Sciences, University of Taipei, Taipei 111, Taiwan
2
Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Rua Escola Industrial e Comercial de Nun’Álvares, 4900-347 Viana do Castelo, Portugal
3
Instituto de Telecomunicações, Delegação da Covilhã, 1049-001 Lisboa, Portugal
4
The Research Centre in Sports Sciences, Health Sciences and Human Development, 5001-801 Vila Real, Portugal
5
Graduate Institute of Athletes and Coaching Science, National Taiwan Sport University, Taoyuan 33301, Taiwan
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(3), 775; https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17030775
Received: 27 December 2019 / Revised: 23 January 2020 / Accepted: 24 January 2020 / Published: 26 January 2020
The aim of this study was to examine ultra-short-term and short-term heart rate variability (HRV) in under-20 (U-20) national futsal players during pre-tournament training camps and an official tournament. Fourteen male U-20 national futsal players (age = 18.07 ± 0.73 yrs; height = 169.57 ± 8.40 cm; body weight = 64.51 ± 12.19 kg; body fat = 12.42% ± 3.18%) were recruited to participate in this study. Early morning 10 min resting HRV, Borg CR-10 scale session rating of perceived exertion (sRPE), and general wellness questionnaire were used to evaluate autonomic function, training load, and recovery status, respectively. Log-transformed root mean square of successive normal-to-normal interval differences (LnRMSSD) was used to compare the first 30 s, first 1 min, first 2 min, first 3 min, and first 4 min with standard 5 min LnRMSSD. Mean (LnRMSSDmean) and coefficient of variation (LnRMSSDcv) of LnRMSSD were used to compare the different time segments of HRV analysis. The result of LnRMSSDmean showed nearly perfect reliability and relatively small bias in all comparisons. In contrast, LnRMSSDcv showed nearly perfect reliability and relatively small bias from 2-4 min time segments in all study periods. In conclusion, for accuracy of HRV measures, 30 s or 1 min ultra-short-term record of LnRMSSDmean and short-term record of LnRMSSDcv of at least 2 min during the training camps are recommended in U-20 national futsal players. View Full-Text
Keywords: futsal; performance; heart rate variability; training load; general wellness; autonomic function futsal; performance; heart rate variability; training load; general wellness; autonomic function
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MDPI and ACS Style

Chen, Y.-S.; Clemente, F.M.; Bezerra, P.; Lu, Y.-X. Ultra-Short-Term and Short-Term Heart Rate Variability Recording during Training Camps and an International Tournament in U-20 National Futsal Players. Int. J. Environ. Res. Public Health 2020, 17, 775. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17030775

AMA Style

Chen Y-S, Clemente FM, Bezerra P, Lu Y-X. Ultra-Short-Term and Short-Term Heart Rate Variability Recording during Training Camps and an International Tournament in U-20 National Futsal Players. International Journal of Environmental Research and Public Health. 2020; 17(3):775. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17030775

Chicago/Turabian Style

Chen, Yung-Sheng, Filipe M. Clemente, Pedro Bezerra, and Yu-Xian Lu. 2020. "Ultra-Short-Term and Short-Term Heart Rate Variability Recording during Training Camps and an International Tournament in U-20 National Futsal Players" International Journal of Environmental Research and Public Health 17, no. 3: 775. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17030775

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