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Sleep indices and cardiac autonomic activity responses during an international tournament in a youth national soccer team
journal contributionposted on 2021-07-14, 03:11 authored by Pedro Figueiredo, Jülio Costa, Antonio LastellaAntonio Lastella, Joäo Morais, Joäo Brito
This study aimed to describe habitual sleep and nocturnal cardiac autonomic activity (CAA), and their relationship with training/match load in male youth soccer players during an international tournament. Eighteen elite male youth soccer players (aged 14.8 ± 0.3 years; mean ± SD) participated in the study. Sleep indices were measured using wrist actigraphy, and heart rate (HR) monitors were used to measure CAA during night-sleep throughout 5 consecutive days. Training and match loads were characterized using the session-rating of perceived exertion (s-RPE). During the five nights 8 to 17 players slept less than <8 h and only one to two players had a sleep efficiency <75%. Players’ sleep duration coefficient of variation (CV) ranged between 4 and 17%. Nocturnal heart rate variability (HRV) indices for the time-domain analyses ranged from 3.8 (95% confidence interval, 3.6; 4.0) to 4.1 ln[ms] (3.9; 4.3) and for the frequency-domain analyses ranged from 5.9 (5.6; 6.5) to 6.6 (6.3; 7.4). Time-domain HRV CV ranged from 3 to 10% and frequency-domain HRV ranged from 2 to 12%. A moderate within-subjects correlation was found between s-RPE and sleep duration [r = −0.41 (−0.62; −0.14); p = 0.003]. The present findings suggest that youth soccer players slept less than the recommended during the international tournament, and sleep duration was neg-atively associated with training/match load.
Number of Pages11
Publisher LicenseCC BY
Full Text URL
Additional RightsCC BY 4.0
External Author AffiliationsPortuguese Football Federation
Author Research InstituteAppleton Institute
JournalInternational Journal of Environmental Research and Public Health
AccelerometerAdolescentFootballMatchParasympathetic systemRecoverySleep durationSleep qualityTraining loadActigraphyAutonomic Nervous SystemHeart RateHumansMalePhysical ExertionSleepSoccerToxicologyPsychology and Cognitive Sciences not elsewhere classifiedSport and Exercise PsychologyHuman Movement and Sports Science not elsewhere classified