Age-Related Differences in Spatiotemporal Variables and Ground Reaction Forces During Sprinting in Boys

Pediatric Exercise Science
Ryu NagaharaTetsuo Fukunaga

Abstract

We aimed to elucidate age-related differences in spatiotemporal and ground reaction force variables during sprinting in boys over a broad range of chronological ages. Ground reaction force signals during 50-m sprinting were recorded in 99 boys aged 6.5-15.4 years. Step-to-step spatiotemporal variables and mean forces were then calculated. There was a slower rate of development in sprinting performance in the age span from 8.8 to 12.1 years compared with younger and older boys. During that age span, mean propulsive force was almost constant, and step frequency for older boys was lower regardless of sprinting phase. During the ages younger than 8.8 years and older than 12.1 years, sprint performance rapidly increased with increasing mean propulsive forces during the middle acceleration and maximal speed phases and during the initial acceleration phase. There was a stage of temporal slower development of sprinting ability from age 8.8 to 12.1 years, being characterized by unchanged propulsive force and decreased step frequency. Moreover, increasing propulsive forces during the middle acceleration and maximal speed phases and during the initial acceleration phase are probably responsible for the rapid development of sprinting abili...Continue Reading

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Citations

Jan 31, 2019·Scandinavian Journal of Medicine & Science in Sports·Ryu NagaharaJohn B Cronin
Nov 11, 2019·Scandinavian Journal of Medicine & Science in Sports·Ryu NagaharaTetsuo Fukunaga
Apr 15, 2020·Scandinavian Journal of Medicine & Science in Sports·Steffi L ColyerAki I T Salo
Aug 11, 2020·Journal of Strength and Conditioning Research·Micheál J CahillJeong E Lee
May 16, 2019·Journal of Sports Sciences·Giorgios P ParadisisOlivier Girard
Jul 18, 2018·PeerJ·Jun MizushimaKeigo Ohyama-Byun
Dec 1, 2020·Frontiers in Bioengineering and Biotechnology·Maximilian M WdowskiMichael J Duncan

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