Increased Regular Season Soft Tissue Injury Rates in National Football League (NFL) Players May Be Associated With the Canceled 2020 NFL Preseason Due to COVID-19

Abstract

The purpose of this study is to evaluate the rates of regular season soft tissue injuries in National Football League (NFL) players during the 2020 season, which had a canceled preseason due to the COVID-19 pandemic. MethodsThis study retrospectively reviewed the injury rates of the 2020-2021 NFL regular season in comparison to the 2018-2019 NFL regular season using publicly available injury data. The focus of our analysis was comparing the following soft tissue injuries: hamstring, groin, calf, quadriceps, thigh, knee -anterior cruciate ligament (ACL), pectoral, and Achilles. The week of injury occurrence, duration of injury in weeks, position of the injured player, and age of the NFL player at injury were obtained. Injury rates were calculated per 1000 athletic exposures with 95% confidence intervals (CIs). A chi-square test and Student's t-test were utilized as appropriate. ResultsThere were 1370 total injuries in the 2018-2019 regular NFL season and 2086 total injuries reported in the 2020-2021 regular NFL season. The total number of injuries per 1000 athletic exposures was significantly higher in the 2020-2021 NFL season compared to the 2018-2019 NFL season (88.57 versus 58.17, p < 0.001). The rates of injuries per 1000 athletic exposures for hamstring (9.98 versus 5.31, p = 0.043), groin (5.56 versus 2.46, p = 0.007), calf (4.08 versus 1.61, p = 0.006), quadriceps (2.00 versus 0.72, p = 0.030), and thigh (1.23 versus 0.30, p = 0.012) injuries were significantly higher in the 2020-2021 regular NFL season compared to the 2018-2019 NFL regular season. ConclusionsThe 2020-2021 NFL season had a significantly higher incidence of soft tissue injuries compared to the 2018-2019 regular NFL season, which may have been associated with the absent preseason due to the COVID-19 pandemic and an abrupt increase in the athletic workload of players.

Effects of COVID-19 on Rate of Injury and Position-Specific Injury During the 2020 National Football League Season

“…Studies performed by Bailey (2,3,30,35). These studies suggest an increased incidence of injury compared with previous seasons unaffected by 3,30,35). However, Platt et al (32) analyzed the 2020 NFL regular season and found no change in overall incidence of injury or incidence of injury by player position compared with previous seasons.…”

“…Recently, limited literature has been published looking at the effects of COVID-19 on NFL injury rates (1)(2)(3)(30)(31)(32)35). Studies performed by Bailey (2,3,30,35).…”

“…Recently, limited literature has been published looking at the effects of COVID-19 on NFL injury rates (1)(2)(3)(30)(31)(32)35). Studies performed by Bailey (2,3,30,35). These studies suggest an increased incidence of injury compared with previous seasons unaffected by 3,30,35).…”

“…Recently, limited literature has been published looking at the effects of COVID-19 on NFL injury rates (1–3,30–32,35). Studies performed by Bailey et al, Omari et al, and Sclafani et al have looked at the effects of COVID-19 on the 2020 regular season, and Baker et al at the first 4 weeks of the 2020 NFL regular season (2,3,30,35). These studies suggest an increased incidence of injury compared with previous seasons unaffected by COVID-19 (2,3,30,35).…”

“…Studies performed by Bailey et al, Omari et al, and Sclafani et al have looked at the effects of COVID-19 on the 2020 regular season, and Baker et al at the first 4 weeks of the 2020 NFL regular season (2,3,30,35). These studies suggest an increased incidence of injury compared with previous seasons unaffected by COVID-19 (2,3,30,35). However, Platt et al (32) analyzed the 2020 NFL regular season and found no change in overall incidence of injury or incidence of injury by player position compared with previous seasons.…”