Variability in the step characteristics of international-level sprinters during the acceleration phase

This study investigated within-session and across-season variability in step characteristics during maximal effort sprint accelerations of internationally competitive sprinters (n = 7) during training. Kinematic data were collected across multiple sessions over the training season. Of each adjacent four-step interval, steps 1-4 showed the highest absolute variation for step frequency, contact and flight time across the cohort, within-session. Across the season, the variability in each kinematic measure (relative to season mean) was specific to the individual, and no single technique variable fluctuated consistently with velocity. Athletes may benefit from being exposed to a variety of situational and environmental constraints that reflect the unpredictability of competition, enabling them to develop variable movement strategies whilst maintaining consistent performance levels.
© Copyright 2018 ISBS Proceedings Archive. Northern Michigan University. Published by International Society of Biomechanics in Sports. All rights reserved.

Subjects: biomechanics technique sprint velocity frequency speed short-distance running movement acceleration track and field
Notations: technical and natural sciences strength and speed sports
Published in: ISBS Proceedings Archive
Editors: P. A. Hume, J. Alderson, B. Wilson
Published: Auckland International Society of Biomechanics in Sports 2018
Volume: 36
Issue: 1
Pages: 980-983
Document types: congress proceedings
electronical journal
Language: English
Level: advanced