The aim of this study was to compare and validate a kinematic-based event detection method for a foot strike and toe-oŠ during an accelerated sprinting. Five male sprinters ran 10, 15, and 25 m with maximal eŠort while a motion capture system collecting the positional data before the foot strike and after the toe-oŠ at the 2nd, 6th, and 10th step. The ground reaction force at these steps was also recorded simultaneously. The foot strike was determined using the peak vertical acceleration of the

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... markers on the toe and theˆrst andˆfth metatarsal head. The toe oŠ was detected using the peak vertical acceleration and the lowest point of the marker on the toe. As a result, the method using the peak vertical acceleration of the marker on the toe was su‹ciently reliable and accurate for detecting the foot strike during the accelerated sprinting. For the toe-oŠ, using the lowest point of the marker on the toe reliably and accurately detected event timing. In conclusion, the foot strike and toe-oŠ events for serial steps during accelerated sprinting on a ground or a treadmill can be detected accurately using proposed kinematic-based methods.