NDLI: Association of acceleration with spatiotemporal variables in maximal sprinting.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Nagahara, R. Naito, H. Morin, J-B Zushi, K.
Description	Country affiliation: Japan Author Affiliation: Nagahara R ( Faculty of Health and Sport Sciences, University of Tsukuba, Japan.); Naito H ( Faculty of Health and Sport Sciences, University of Tsukuba, Japan.); Morin JB ( Laboratory of Exercise Physiology, University of Lyon, Saint-Etienne, France.); Zushi K ( Faculty of Health and Sport Sciences, University of Tsukuba, Japan.)
Abstract	This study clarified the association between acceleration and the rates of changes in spatiotemporal variables on a step-to-step basis during the entire acceleration phase of maximal sprinting. 21 male sprinters performed a 60-m sprint, during which step-to-step acceleration and rates of changes in step length (RSL) and step frequency (RSF) were calculated. The coefficients of correlation between acceleration and other variables were tested at each step. There were positive correlations between acceleration and the RSF up to the second step. Acceleration was positively correlated with the RSL from the 5(th) to the 19(th) step. At the third and from the 16(th) to the 22(nd) step and from the 20(th) to the 21(st) step, there was no significant correlation, but weak relationships were found between acceleration and the RSF and RSL. The results suggest that the acceleration phase can be divided into 3 sections, and for sprinting to be effective, it is important to accelerate by increasing the step frequency to the third step, increasing the step length from the 5(th) to the 15(th) step, and increasing the step length or frequency (no systematic relative importance of step length or frequency) from the 16(th) step in the entire acceleration phase.
File Format	HTM / HTML
ISSN	01724622
Issue Number	9
Volume Number	35
e-ISSN	14393964
Journal	International Journal of Sports Medicine
Language	English
Publisher	Thieme
Publisher Date	2014-08-01
Publisher Place	Germany
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Sports Medicine Acceleration Athletic Performance Physiology Gait Running Adult Biomechanical Phenomena Humans Male Muscle Strength Time And Motion Studies Young Adult Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physical Therapy, Sports Therapy and Rehabilitation Sports Science

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