von Rosen Philip, Halvarsson Bodil
Department of Neurobiology, Care Sciences, and Society (NVS) Division of Physiotherapy, Karolinska Institutet, Huddinge, Sweden.
BMJ Open Sport Exerc Med. 2018 Apr 20;4(1):e000347. doi: 10.1136/bmjsem-2018-000347. eCollection 2018.
The high physical load associated with running through uneven terrain contributes toorienteerers being exposed to high injury risk, where the majority of injuries are located in the lower extremities. Specific training programmes have been effective at reducing injury risk in sports. Yet no trial has been conducted in elite orienteering. The aim of this study is to investigate the effectiveness of a specific training programme in preventing lower extremity injury in adult elite orienteerers.
Randomised controlled trial (RCT).
Seventy-two Swedish elite orienteerers, aged 18-40 years, are allocated to an intervention or control group. The intervention group performs four specific exercises, with three difficult levels intensified every second week over the first 4 weeks, targeting strength, flexibility and coordination of the lower extremity. The exercises are completed four times a week (10 min per session) in conjunction with normal training over 14 weeks. Injury data are collected every second week using a valid injury questionnaire distributed by text messages over 14 weeks. The primary outcome is number of substantial injuries in the lower extremity. The secondary outcomes are incidence of ankle sprains and the average substantial injury prevalence across 14 weeks.
Due to high injury risk and lack of injury prevention trials in orienteering, an RCT investigating the effect of a specific exercise programme in preventing lower extremity injury is warranted. The results of this trial will be beneficial to orienteerers, clubs and federations, and increase our understanding on how lower extremity injuries can be prevented in a physically challenging sport.
NCT03408925.
在崎岖地形上跑步所带来的高强度身体负荷，使得定向越野运动员面临较高的受伤风险，其中大多数损伤位于下肢。特定的训练计划在降低运动损伤风险方面已被证明是有效的。然而，尚未在精英定向越野领域进行过相关试验。本研究的目的是调查一项特定训练计划对预防成年精英定向越野运动员下肢损伤的有效性。
随机对照试验（RCT）。
72名年龄在18至40岁之间的瑞典精英定向越野运动员被分配到干预组或对照组。干预组进行四项特定练习，在最初的4周内，每隔一周增加三个难度级别，目标是增强下肢的力量、灵活性和协调性。这些练习每周进行四次（每次10分钟），并与正常训练相结合，持续14周。在14周内，每隔一周通过短信发放一份有效的损伤调查问卷来收集损伤数据。主要结局是下肢严重损伤的数量。次要结局是踝关节扭伤的发生率以及14周内严重损伤的平均发生率。
由于定向越野运动存在较高的受伤风险且缺乏预防损伤的试验，因此有必要进行一项RCT来研究特定锻炼计划对预防下肢损伤的效果。本试验的结果将对定向越野运动员、俱乐部和联合会有益，并增进我们对如何在一项对身体要求较高的运动中预防下肢损伤的理解。
NCT03408925。
