Biological Maturity and Ground Reaction Force Production

Abstract: Sprint ability develops nonlinearly across childhood and adolescence. However, the underpinning ground reaction force (GRF) production is not fully understood. This study aimed to uncover the kinetic factors that explain these maturation-related sprint performance differences in Japanese boys and girls. A total of 153 untrained schoolchildren (80 boys, 73 girls) performed two 50-m maximal …

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Ground Reaction Force During Sprint Acceleration

Abstract: Abrupt changes in kinematics during sprint acceleration called transitions have previously been observed. This study aimed to examine whether ground reaction force (GRF) variables during sprint acceleration also show specific features of the transitions. Twenty-one male sprinters performed 60-m sprints, during which GRF data were recorded. Step-to-step spatiotemporal and GRF variables were approximated using …

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Sensor Insole and Measurement of Ground Reaction Force

Ryu Nagahara, Jean-Benoit Morin. 2018. Sensor insole for measuring temporal variables and vertical force during sprinting. Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology. January 19 Research Article https://doi.org/10.1177/1754337117751730ABSTRACTTemporal variables and vertical ground reaction force have been used as measures characterizing sprinting. A recently developed wireless pressure sensor insole (sensor insole) …

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Built for Speed: Musculoskeletal Structure and Sprinting Ability

 Abstract: The musculoskeletal structure of the foot and ankle has the potential to influence human sprinting performance in complex ways. A large Achilles’ tendon moment arm improves the mechanical advantage of the triceps surae but also produces larger shortening velocity during rapid plantar-flexion, which detracts from the force-generating capacity of the plantar-flexors. The lever arm …

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