Key result
A 40-day COVID-19 quarantine significantly reduced relative distance by 12.5% and impaired maximal speed, acceleration, and deceleration during Yo-Yo test performance in professional soccer players.
Why the study?
The study was conducted to evaluate the effects of quarantine during a serious viral outbreak on cardiovascular and Yo-Yo test performance in professional soccer players.
Do COVID-19-related restrictions and quarantine reduce Yo-Yo test performance in professional soccer players?
Observational (n=20)
No
Do COVID-19-related restrictions and quarantine reduce Yo-Yo test performance in professional soccer players?
Absolute Event Rate: 141.11% vs 161.74%
p-value: p=0.019
COVID-19-related restrictions and quarantine significantly impaired running performance and cardiovascular fitness in professional soccer players.
May warrant cautious reconditioning protocols post-quarantine in athletes; leaves open generalizability and optimal recovery timelines.
The present study aimed to verify the quarantine’s effects during a serious viral outbreak on the cardiovascular and performance associated with the Yo-Yo test in a sample of professional soccer players. 20 high-level soccer players ( n = 20; age: 26 ± 4 years-old; weight: 76.85 ± 6.7 kg; height: 179 ± 6 cm) participated in this study. The intermittent Yo-Yo test was performed pre- and post- COVID-19 quarantine in a random order. During each test, the soccer players’ running performance outcomes were monitored using a portable 5-Hz GPS with a 100 Hz accelerometer and a paired t -test was conducted at a p -value of ≤ 0.05. The main results demonstrated significant differences between pre- versus post-COVID-19 quarantine in the following variables: relative distance (161.7 ± 5.9 > 141.1 ± 33.8 m/min), maximal speed (18.7 ± 0.9 > 18.2 ± 0.6 km/h), acceleration (60 ± 20 frequency > 52 ± 16 frequency), deceleration (34 ± 13 frequency > 27 ± 6 frequency), sprints > 19 km/h [0.8 (0.2;3)% >0.5 (0;0.5)%], and in high intensity running distance [16.48 (2.68;41.64)m > 0.827 (0.164;3.0)m]. We concluded that COVID-19-related restrictions and quarantine COVID-19 demonstrated adverse effects on professional soccer players’ Yo-Yo tests performance.
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Freire et al. (2020) conducted an observational in Professional soccer players (athletic performance) (n=20). COVID-19 quarantine vs. Pre-quarantine was evaluated on Relative distance (m/min) during Yo-Yo test (95% CI -37.46 to -3.79, p=0.019). A 40-day COVID-19 quarantine significantly reduced relative distance by 12.5% and impaired maximal speed, acceleration, and deceleration during Yo-Yo test performance in professional soccer players.
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