Kinematic differences between faster and slower sprinters during the acceleration phase of sprint running

K. Kobayashi, H. Tsuchie, H. Kanehisa, Toshimasa Yanai, Yasuo Kawakami

研究成果: Article

抄録

Aim: The purpose of this study was to examine kinematic differences between faster and slower sprinters during the acceleration phase of sprint running. Methods: Nineteen collegiate sprinters were divided into FAST (N.=9) and SLOW (N.=10) groups, based on their best 100 m race times. A two-dimensional videographic technique was used to record the side views of 40 m sprint performances using four high-speed digital camcorders. Using the recorded images, kinematic variables such as contact time, flight time, horizontal velocity, and horizontal acceleration were determined from the 1st step to the 19th step. A two-way repeated measures ANOVA (two groups of 10 steps each) with a Tukey post-hoc test was used to analyze the obtained data. Results: From the 7th step to the 19th step, the horizontal velocity was significantly higher for the FAST group as compared with that for the SLOW group. The horizontal acceleration from the 1st step to the 19th step and the horizontal velocity from the 7th step to the 19th step were significantly greater for the FAST group as compared with those for the SLOW group. In addition, the ground contact time was significantly lower for the FAST group as compared with that for the SLOW group. Conclusion: The results indicate that faster sprinters can achieve greater horizontal acceleration with shorter ground contact during the initial as well as the latter stage of the acceleration phase, during which they are already running faster.

元の言語English
ページ(範囲)163-172
ページ数10
ジャーナルGazzetta Medica Italiana Archivio per le Scienze Mediche
174
発行部数4
出版物ステータスPublished - 2015 4 1

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Biomechanical Phenomena
Analysis of Variance

ASJC Scopus subject areas

  • Medicine(all)

これを引用

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title = "Kinematic differences between faster and slower sprinters during the acceleration phase of sprint running",
abstract = "Aim: The purpose of this study was to examine kinematic differences between faster and slower sprinters during the acceleration phase of sprint running. Methods: Nineteen collegiate sprinters were divided into FAST (N.=9) and SLOW (N.=10) groups, based on their best 100 m race times. A two-dimensional videographic technique was used to record the side views of 40 m sprint performances using four high-speed digital camcorders. Using the recorded images, kinematic variables such as contact time, flight time, horizontal velocity, and horizontal acceleration were determined from the 1st step to the 19th step. A two-way repeated measures ANOVA (two groups of 10 steps each) with a Tukey post-hoc test was used to analyze the obtained data. Results: From the 7th step to the 19th step, the horizontal velocity was significantly higher for the FAST group as compared with that for the SLOW group. The horizontal acceleration from the 1st step to the 19th step and the horizontal velocity from the 7th step to the 19th step were significantly greater for the FAST group as compared with those for the SLOW group. In addition, the ground contact time was significantly lower for the FAST group as compared with that for the SLOW group. Conclusion: The results indicate that faster sprinters can achieve greater horizontal acceleration with shorter ground contact during the initial as well as the latter stage of the acceleration phase, during which they are already running faster.",
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T1 - Kinematic differences between faster and slower sprinters during the acceleration phase of sprint running

AU - Kobayashi, K.

AU - Tsuchie, H.

AU - Kanehisa, H.

AU - Yanai, Toshimasa

AU - Kawakami, Yasuo

PY - 2015/4/1

Y1 - 2015/4/1

N2 - Aim: The purpose of this study was to examine kinematic differences between faster and slower sprinters during the acceleration phase of sprint running. Methods: Nineteen collegiate sprinters were divided into FAST (N.=9) and SLOW (N.=10) groups, based on their best 100 m race times. A two-dimensional videographic technique was used to record the side views of 40 m sprint performances using four high-speed digital camcorders. Using the recorded images, kinematic variables such as contact time, flight time, horizontal velocity, and horizontal acceleration were determined from the 1st step to the 19th step. A two-way repeated measures ANOVA (two groups of 10 steps each) with a Tukey post-hoc test was used to analyze the obtained data. Results: From the 7th step to the 19th step, the horizontal velocity was significantly higher for the FAST group as compared with that for the SLOW group. The horizontal acceleration from the 1st step to the 19th step and the horizontal velocity from the 7th step to the 19th step were significantly greater for the FAST group as compared with those for the SLOW group. In addition, the ground contact time was significantly lower for the FAST group as compared with that for the SLOW group. Conclusion: The results indicate that faster sprinters can achieve greater horizontal acceleration with shorter ground contact during the initial as well as the latter stage of the acceleration phase, during which they are already running faster.

AB - Aim: The purpose of this study was to examine kinematic differences between faster and slower sprinters during the acceleration phase of sprint running. Methods: Nineteen collegiate sprinters were divided into FAST (N.=9) and SLOW (N.=10) groups, based on their best 100 m race times. A two-dimensional videographic technique was used to record the side views of 40 m sprint performances using four high-speed digital camcorders. Using the recorded images, kinematic variables such as contact time, flight time, horizontal velocity, and horizontal acceleration were determined from the 1st step to the 19th step. A two-way repeated measures ANOVA (two groups of 10 steps each) with a Tukey post-hoc test was used to analyze the obtained data. Results: From the 7th step to the 19th step, the horizontal velocity was significantly higher for the FAST group as compared with that for the SLOW group. The horizontal acceleration from the 1st step to the 19th step and the horizontal velocity from the 7th step to the 19th step were significantly greater for the FAST group as compared with those for the SLOW group. In addition, the ground contact time was significantly lower for the FAST group as compared with that for the SLOW group. Conclusion: The results indicate that faster sprinters can achieve greater horizontal acceleration with shorter ground contact during the initial as well as the latter stage of the acceleration phase, during which they are already running faster.

KW - Acceleration

KW - Exercise test

KW - Running

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