Abstract
The recent paper “Hurdle Clearance Detection and Spatiotemporal Analysis in 400 Meters Hurdles Races Using Shoe-Mounted Magnetic and Inertial Sensor” (Sensors 2020, 20, 354) proposes a wearable system based on a foot-worn miniature inertial measurement unit (MIMU) and different methods to detect hurdle clearance and to identify the leading leg during 400-m hurdle races. Furthermore, the presented system identifies changes in contact time, flight time, running speed, and step frequency throughout the race. In this comment, we discuss the original paper with a focus on the ecological validity and the applicability of MIMU systems for field-based settings, such as training or competition for elite athletes.
Highlights
A successful outcome of performance analysis and coaching can be supported by useful and timely feedback to the athlete
We explicitly acknowledge the excellent work of the authors since it helps with increasing the scientific data about 400-m hurdles performance
flight time (FT) that differ remarkably from values known from previous research
Summary
A successful outcome of performance analysis and coaching can be supported by useful and timely feedback to the athlete. Systematic, accurate, reliable, and valid performance monitoring can support skilled performance and promote the incorporation of scientific knowledge into coaching practice, especially in elite sports Within this context, Falbriard, Mohr, and Aminian [1] introduce a system based on MIMU and its application in 400-m hurdles races. Falbriard, Mohr, and Aminian [1] introduce a system based on MIMU and its application in 400-m hurdles races In applied settings, such as training interventions or competition, athletes and coaches benefit from a short feedback interval and suitable data presentation [2]. This is mainly due to a lack of suitable systems to measure those parameters over the entire race, for CT [10,11,12] In this context, Falbriard, Mohr, and Aminian [1] present a concept for a wearable system for performance analysis in a field-based setting of 400-m hurdles races. The questions we raise will hopefully contribute to a constructive discussion about the possibilities and restrictions of using MIMU sensors in applied sprinting settings
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