Study on Hamstring Re-injury Prevention (SHARP): protocol for an international multicentre, randomised controlled trial

Abstract

IntroductionPrevious studies showed that the Nordic hamstring exercise (NHE) effectively prevents primary hamstring injury. However, no study investigated the secondary preventing effect of the NHE on hamstring reinjury. The primary purpose of this study is to investigate the effectiveness of the NHE for preventing hamstring reinjury after return to play (RTP) following a hamstring injury in football players. The secondary purpose is to determine the effect of the NHE on sprint and jump performance.Methods and analysisThis is an international multicentre, prospective, parallel-group randomised controlled trial study. Subjects include male or female football players aged 18–40 years and within 1 week of RTP following a hamstring injury will be randomised into Nordics or a control group. Subjects in both groups continue their regular football training, but the Nordics group will perform an additional NHE programme. An online questionnaire will be sent to the subjects in both groups once per week within the first 10 weeks, then continued at months 6, 9 and 12. In a (performance) substudy, we will evaluate the effect of the NHE on sprint and vertical jump performance at three time points (at the beginning of the study, after 10 weeks and 12 months of follow-up).The primary outcomes are the incidence of hamstring reinjury within 2 and 12 months. The secondary outcomes are sprint and jump performance, adherence to the programme, duration of reinjury and reinjury burden.Ethics and disseminationThis study is approved by the medical ethics committee of Amsterdam University Medical Center (UMC) in the Netherlands (METC 2021_117), Faculty of Medicine Universitas Gadjah Mada in Indonesia (KE/FK/1248/EC/2021), Norwegian School of Sport Sciences in Norway (number 216–2 70 122) and Denmark (ethical submission in process). The study’s findings will be disseminated in scientific peer-reviewed journals and presented at international conferences.Trial registration numberNL9711.

Baseline clinical and MRI risk factors for hamstring reinjury showing the value of performing baseline MRI and delaying return to play: a multicentre, prospective cohort of 330 acute hamstring injuries

“…However, new evidence suggests that a combination of eccentric exercises may have an even better chance of protecting hamstring muscles from reinjuries 43. Further studies to evaluate the effectiveness of a comprehensive exercise approach to prevent hamstring reinjury need to be conducted 44…”

“… 43 Further studies to evaluate the effectiveness of a comprehensive exercise approach to prevent hamstring reinjury need to be conducted. 44 …”

“…43 Further studies to evaluate the effectiveness of a comprehensive exercise approach to prevent hamstring reinjury need to be conducted. 44 What we know is that inactivity or unloading can reduce the surface area of the MTJ. 40 Theoretically, the first injury that requires a period of immobilisation might weaken the MTJ by making it less capable to tolerate load-and therefore more susceptible to injury.…”

Validity Test of Hamstring Muscle Strength Test for Handball Athletes

“…One injury that often occurs in handball athletes is a hamstring muscle injury. If there is a hamstring injury, the athlete needs to rest and recover in order to return to sport because hamstring injuries have a high incidence rate of reinjury Petersen et al, 2010;Zein et al, 2022). It will directly harm the team as well as individuals, but there is no other choice.…”

The Preventive Warm up to Reduce No-Contact Injury Risk in Amateur Male Soccer Players

“…In the amateur soccer player, there are no important financial costs but remain some considerations relating to the practioners health: in fact, in Italy the amateur soccer player does not receive a salary like the professional soccer player, nor does the sports association provide for medical expenses in case of injury. This is the reason why the attention of the literature has focused on soccer injury prevention strategies (Zein et al, 2022;Chebbi et al, 2022;Biz et al 2021;Al Attar et al, 2017).…”