%A Albuquerque Freire,Lucas de %A Tannure,Márcio %A Sampaio,Márcio %A Slimani,Maamer %A Znazen,Hela %A Bragazzi,Nicola Luigi %A Aedo-Muñoz,Esteban %A Sobarzo Soto,Dany Alexis %A Brito,Ciro José %A Miarka,Bianca %D 2020 %J Frontiers in Psychology %C %F %G English %K Athletic Performance,behavior analysis,Coronavirus,Exercise Program,Physical conditioning %Q %R 10.3389/fpsyg.2020.589543 %W %L %M %P %7 %8 2020-December-18 %9 Original Research %# %! COVID-19-related Restrictions and Quarantine %* %< %T COVID-19-Related Restrictions and Quarantine COVID-19: Effects on Cardiovascular and Yo-Yo Test Performance in Professional Soccer Players %U https://www.frontiersin.org/articles/10.3389/fpsyg.2020.589543 %V 11 %0 JOURNAL ARTICLE %@ 1664-1078 %X 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.