Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison.
J Athl Train. 2021 Jun 1;56(6):542-547. doi: 10.4085/610-20.
As sports are reinitiated around the United States, the incidence of COVID-19 among youth soccer athletes remains unknown.
To determine the incidence of COVID-19 among youth soccer athletes and the risk-mitigation practices used by youth soccer organizations.
Cohort study.
Survey distributed to Elite Clubs National League member clubs.
Youth soccer club directors throughout the United States.
MAIN OUTCOME MEASURE(S): Surveys were completed in late August 2020 regarding the club's current phase of return to soccer (individual only, group noncontact, group contact), date of reinitiation, number of players, cases of COVID-19, and risk-reduction procedures being implemented. Case and incidence rates were compared with national pediatric data and county data from the prior 10 weeks. A negative binomial regression model was developed to predict club COVID-19 cases using the local incidence rate and phase of return as covariates and the log of club player-days as an offset.
A total of 124 respondents had reinitiated soccer, representing 91 007 players with a median duration of 73 days (interquartile range = 53-83 days) since restarting. Of the 119 clubs that had progressed to group activities, 218 cases of COVID-19 were reported among 85 861 players. Youth soccer players had a lower case rate and incidence rate than children in the United States (254 versus 477 cases per 100 000; incidence rate ratio = 0.511, 95% CI = 0.40, 0.57; P < .001) and the general population in the counties where data were available (268 versus 864 cases per 100 000; incidence rate ratio = 0.202, 95% CI = 0.19, 0.21; P < .001). After adjusting for the local COVID-19 incidence, we found no relationship between the club COVID-19 incidence and the phase of return (noncontact: b = 0.35 ± 0.67, P = .61; contact: b = 0.18 ± 0.67, P = .79). Soccer clubs reported using a median of 8 (interquartile range = 6-10) risk-reduction procedures.
The incidence of COVID-19 among youth soccer athletes was relatively low when compared with the background incidence among children in the United States during the summer of 2020. No relationship was identified between the club COVID-19 incidence and the phase of return to soccer.
随着美国各地重新开始体育运动，青少年足球运动员中 COVID-19 的发病率仍不清楚。
确定青少年足球运动员中 COVID-19 的发病率以及青少年足球组织采用的降低风险措施。
队列研究。
精英俱乐部国家联盟成员俱乐部的调查。
全美青少年足球俱乐部主任。
2020 年 8 月下旬完成的有关俱乐部当前重返足球阶段（个人、团体非接触、团体接触）、重新开始日期、球员人数、COVID-19 病例以及正在实施的降低风险程序的调查。病例和发病率与全国儿科数据以及前 10 周的县数据进行了比较。使用局部发病率和返回阶段作为协变量，以及俱乐部球员日的对数作为偏移量，建立了一个负二项回归模型来预测俱乐部 COVID-19 病例。
共有 124 名受访者重新开始了足球运动，代表着 91007 名球员，自重启以来，中位数时间为 73 天（四分位距=53-83 天）。在已经进入团体活动阶段的 119 个俱乐部中，在 85861 名球员中报告了 218 例 COVID-19 病例。与美国儿童（每 100000 例中有 477 例）和有数据可查的县的一般人群（每 100000 例中有 864 例）相比，青少年足球运动员的病例率和发病率较低（每 100000 例中有 254 例）（发病率比=0.511，95%CI=0.40，0.57；P<.001）。在调整了当地 COVID-19 发病率后，我们发现俱乐部 COVID-19 发病率与回归阶段之间没有关系（非接触组：b=0.35±0.67，P=.61；接触组：b=0.18±0.67，P=.79）。足球俱乐部报告使用了中位数为 8 项（四分位距=6-10 项）的降低风险措施。
与 2020 年夏季美国儿童的背景发病率相比，青少年足球运动员中 COVID-19 的发病率相对较低。俱乐部 COVID-19 发病率与重返足球阶段之间没有关系。
