FSI Football Science Update

Incidence of Injury for Professional Soccer Players in the United States: A 6-Year Prospective Study of Major League Soccer.

Forsythe B, Knapik DM, Crawford MD, Diaz CC, Hardin D, Gallucci J, Silvers-Granelli HJ, Mandelbaum BR, Lemak L, Putukian M, Giza E.

Orthop J Sports Med. 2022 Mar 24;10(3):23259671211055136.doi:10.1177/23259671211055136. eCollection 2022 Mar.

This study used a web-based health management platform to prospectively collect injury data from all MLS teams between 2014 and 2019. An injury was defined as an incident that required medical attention. A mean 1.1 injuries per year per player were identified, with midfielders sustaining the largest number of injuries. The most common injuries were hamstring strains (12.3%), ankle sprains (8.5%), and adductor strains (7.6%). The mean time missed per injury was 15.8 days, with 44.2% of injuries resulting in no days missed. Overall injury incidence was 8.7 per 1000 hours of exposure, declining over the course of the investigation, with a 4.1-times greater mean incidence during matches (14.0/1000 h) than training (3.4/1000 h).




Sports and trauma as risk factors for Motor Neurone Disease: New Zealand case-control study.

Chen GX, Douwes J, van den Berg LH, Glass B, McLean D, ‘t Mannetje AM.

Acta Neurol Scand. 2022 Mar 31. doi: 10.1111/ane.13615. Online ahead of print.

This study interviewed 321 motor neurone disease (MND) and 605 population controls in New Zealand (2013-2016). Head injury with concussion ≥3 years before diagnosis was associated with MND (OR 1.51) with strongest associations for two (OR 4.01) and three or more (OR 2.34) episodes. engaging in sports throughout childhood and adulthood increased MND risk (OR 1.81) as was more than 12 years playing football/soccer (OR 2.35). Reporting emotionally traumatic events in more was also associated with MND (OR 1.88)




Early versus delayed lengthening exercises for acute hamstring injury in male athletes: a randomised controlled clinical trial.

Vermeulen R, Whiteley R, van der Made AD, van Dyk N, Almusa E, Geertsema C, Targett S, Farooq A, Bahr R, Tol JL, Wangensteen A.

Br J Sports Med. 2022 Mar 25:bjsports-2020-103405. doi: 10.1136/bjsports-2020-103405. Online ahead of print.

This randomised controlled study evaluated the efficacy of early (at day 1 of rehabilitation) versus delayed (after being able to run at 70% of maximal speed) introduction of lengthening (ie, eccentric strengthening) exercises in addition to an established rehabilitation programme on 90 male participants with an MRI-confirmed acute hamstring injury. Accelerating the introduction of lengthening exercises in the rehabilitation of hamstring injury in male athletes did not improve the time to return to sport nor the risk of reinjury.




Acute Effects of Soleus Stretching on Ankle Flexibility, Dynamic Balance and Speed Performances in Soccer Players.

Huang S, Zhang HJ, Wang X, Lee WC, Lam WK.

Biology (Basel). 2022 Feb 26;11(3):374. doi: 10.3390/biology11030374.

This study in 14 healthy male soccer players revealed that calf dynamic stretching increased the active range of ankle motion, plantarflexion strength, dynamic balance, and linear and curved sprinting times compared to no-stretching. Including soleus stretching led to even better ankle flexibility, maximum plantarflexion strength and curved running time.