Buchholtz K, Lambert M, Burgess T L
Health, Physical Activity, Lifestyle, and Sport (HPALS) Research Centre, University of Cape Town, Cape Town, South Africa.
Department of Physiotherapy, LUNEX International University of Health, Exercise and Sports, Luxembourg.
Sports Med Health Sci. 2022 Oct 9;4(4):287-292. doi: 10.1016/j.smhs.2022.10.003. eCollection 2022 Dec.
Falls are a common mechanism of injury in mountain biking and may be related to a loss of control of the bicycle. Traditionally, the components of bicycle control (balance and agility) are measured in standing and running, which may not reflect the skills required in mountain biking. In this paper, we present the validity of both traditional standing and novel bicycle-specific balance tests in mountain bikers. Twenty-nine male and female participants completed indoor laboratory tests and an outdoor downhill trail. Participants completed single-leg stance balance, Y-balance test, one static and four dynamic bicycle-specific balance tests, a bicycle agility test, and an outdoor downhill trail. Single-leg stance balance and Y-balance tests with eyes open had poor validity when associated with bicycle control. The static ( = -0.57, 0.001) and four dynamic bicycle balance tests ( = -0.51 to -0.78, 0.005 to 0.0001), and the bicycle agility test ( = 0.87, 0.0001) had moderate to strong relationships with the outdoor downhill run. Single-leg stance balance and Y-balance tests with eyes open are not valid measures of performance on a mountain bike, and should not be used to assess these populations. Our novel bicycle balance tests have adequate validity to be used as measures of performance in mountain bikers.
摔倒在山地自行车运动中是常见的受伤机制，可能与自行车失控有关。传统上，自行车操控的组成部分（平衡和敏捷性）是在站立和跑步状态下进行测量的，这可能无法反映山地自行车运动所需的技能。在本文中，我们阐述了传统站立测试和新型自行车专项平衡测试在山地自行车骑行者中的有效性。29名男性和女性参与者完成了室内实验室测试和一次户外下坡赛道测试。参与者完成了单腿站立平衡测试、Y平衡测试、一项静态和四项动态自行车专项平衡测试、一项自行车敏捷性测试以及一次户外下坡赛道测试。睁眼状态下的单腿站立平衡测试和Y平衡测试与自行车操控的相关性有效性较差。静态自行车平衡测试（r = -0.57，p < 0.001）和四项动态自行车平衡测试（r = -0.51至-0.78，p = 0.005至0.0001）以及自行车敏捷性测试（r = 0.87，p < 0.0001）与户外下坡骑行表现有中度到高度的相关性。睁眼状态下的单腿站立平衡测试和Y平衡测试不是山地自行车骑行表现的有效衡量指标，不应被用于评估这些人群。我们的新型自行车平衡测试具有足够的有效性，可作为山地自行车骑行者表现的衡量指标。
