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The reliability of force platform data from trotting horses

机译：小跑马力平台数据的可靠性

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摘要

The aim of the present study was to quantify the inter-day reliability of force platform data from horses at the trot The subjects were ten horses judged to be sound on the basis of clinical evaluation and similarity of ground reaction force peaks ofleft and right limbs. The same handler trotted horses in hand for four consecutive days over a force platform at their natural and comfortable velocity between 2.70 and 3.60 m s~(-1). For each horse, velocity was controlled in a range of ± 0.15 ms~(-1).Five contacts per limb were recorded on each day. Custom-written code in MATLAB was used to smooth the data and time-normalize to 101 data points. The agreement boundary was used to determine the reliability of seven force variables. Stance duration, peak vertical force and vertical impulse were the most reliable variables (< 10% variability in the mean), while peak braking and propulsive forces and impulses had larger variation across the three days (>20% variability in the mean). Variables with low variability may require fewer animals, trials and days to obtain accurate data while maintaining adequate statistical power These results may act both as a reference when studying variability in lame horses and as a guide for planning future equine kinetic studies.
机译：本研究的目的是量化小跑时马匹的力量平台数据的日间可靠性。根据临床评估和左右肢体地面反作用力峰值的相似性，将十名马匹判定为健全。相同的处理者在一个受力平台上连续四天以其自然和舒适的速度在2.70至3.60 m s〜（-1）之间向小马奔跑。每匹马的速度控制在±0.15 ms〜（-1）范围内，每天记录每肢五次接触。在MATLAB中使用自定义编写的代码对数据进行平滑处理并将其时间标准化为101个数据点。协议边界用于确定七个力变量的可靠性。姿态持续时间，峰值垂直力和垂直冲击力是最可靠的变量（均值<10％的变异性），而峰值制动，推进力和脉冲在三天内的变化更大（均值> 20％的变异性）。具有低变异性的变量可能需要较少的动物，试验和天数来获得准确的数据，同时保持足够的统计能力。这些结果既可以作为研究me马的变异性的参考，也可以作为规划未来马动力研究的指南。

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