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Reliability and validity of pressure and temporal parameters recorded using a pressure-sensitive insole during running

机译：跑步期间使用压敏鞋垫记录的压力和时间参数的可靠性和有效性

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Running biomechanics has received increasing interest in recent literature on running-related injuries, calling for new, portable methods for large-scale measurements. Our aims were to define running strike pattern based on output of a new pressure-sensitive measurement device, the Runalyser, and to test its validity regarding temporal parameters describing running gait. Furthermore, reliability of the Runalyser measurements was evaluated, as well as its ability to discriminate different running styles. Thirty-one healthy participants (30.3±7.4 years, 1.78±0.10m and 74.1±12.1kg) were involved in the different study parts. Eleven participants were instructed to use a rearfoot (RFS), midfoot (MFS) and forefoot (FFS) strike pattern while running on a treadmill. Strike pattern was subsequently defined using a linear regression (R2=0.89) between foot strike angle, as determined by motion analysis (1000Hz), and strike index (SI, point of contact on the foot sole, as a percentage of foot sole length), as measured by the Runalyser. MFS was defined by the 95% confidence interval of the intercept (SI=43.9-49.1%). High agreement (overall mean difference 1.2%) was found between stance time, flight time, stride time and duty factor as determined by the Runalyser and a force-measuring treadmill (n=16 participants). Measurements of the two devices were highly correlated (R≥0.80) and not significantly different. Test-retest intra-class correlation coefficients for all parameters were ≥0.94 (n=14 participants). Significant differences (p0.05) between FFS, RFS and habitual running were detected regarding SI, stance time and stride time (n=24 participants). The Runalyser is suitable for, and easily applicable in large-scale studies on running biomechanics.
机译：跑步生物力学在有关跑步相关伤害的最新文献中越来越引起人们的兴趣，要求使用新型的便携式方法进行大规模测量。我们的目标是根据新的压敏测量设备Runalyser的输出定义跑步打击模式，并测试其在描述跑步步态的时间参数方面的有效性。此外，评估了Runalyser测量的可靠性，以及其区分不同运行方式的能力。 31名健康参与者（30.3±7.4岁，1.78±0.10m和74.1±12.1kg）参与了不同的研究部分。指导11名参与者在跑步机上跑步时使用后脚（RFS），中脚（MFS）和前脚（FFS）打击方式。随后使用通过运动分析（1000Hz）确定的脚部打击角和打击指数（SI，脚底接触点，以脚底长度的百分比）之间的线性回归（R2 = 0.89）定义打击方式，由Runalyser测量。 MFS由截距的95％置信区间（SI = 43.9-49.1％）定义。由Runalyser和测力跑步机（n = 16位参与者）确定的站姿时间，飞行时间，步幅时间和占空因数之间的一致性较高（总体平均差异为1.2％）。两种设备的测量值高度相关（R≥0.80），差异不显着。所有参数的类内相关系数重测均≥0.94（n = 14名参与者）。 FSI，RFS和惯常跑步之间在SI，站立时间和步幅时间（n = 24位参与者）之间存在显着差异（p <0.05）。 Runalyser适用于并且很容易应用于运行生物力学的大规模研究。

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