Interaction Between Leg Muscle Performance and Sprint Acceleration Kinematics

Journal of Human Kinetics
Robert G LockieAron J Murphy

Abstract

This study investigated relationships between 10 m sprint acceleration, step kinematics (step length and frequency, contact and flight time), and leg muscle performance (power, stiffness, strength). Twenty-eight field sport athletes completed 10 m sprints that were timed and filmed. Velocity and step kinematics were measured for the 0-5, 5-10, and 0-10 m intervals to assess acceleration. Leg power was measured via countermovement jumps (CMJ), a five-bound test (5BT), and the reactive strength index (RSI) defined by 40 cm drop jumps. Leg stiffness was measured by bilateral and unilateral hopping. A three-repetition maximum squat determined strength. Pearson's correlations and stepwise regression (p ≤ 0.05) determined velocity, step kinematics, and leg muscle performance relationships. CMJ height correlated with and predicted velocity in all intervals (r = 0.40-0.54). The 5BT (5-10 and 0-10 m intervals) and RSI (5-10 m interval) also related to velocity (r = 0.37-0.47). Leg stiffness did not correlate with acceleration kinematics. Greater leg strength related to and predicted lower 0-5 m flight times (r = -0.46 to -0.51), and a longer 0-10 m step length (r = 0.38). Although results supported research emphasizing the value of leg ...Continue Reading

Citations

Dec 30, 2016·Journal of Motor Behavior·Megan C KirklandMichelle Ploughman
Nov 29, 2017·International Journal of Sports Physiology and Performance·Robin HealyAndrew J Harrison
Aug 21, 2018·Journal of Strength and Conditioning Research·Farzad JalilvandRobert G Lockie
Mar 27, 2019·Journal of Strength and Conditioning Research·Irineu LoturcoLucas A Pereira
Dec 21, 2017·European Journal of Applied Physiology·Mitsuo OtsukaTadao Isaka

❮ Previous
Next ❯

Related Concepts

Related Feeds

Anxiety Disorders

Discover the latest research on anxiety disorders including agoraphobia, panic disorder, obsessive-compulsive disorder, and post-traumatic stress disorder here.

Related Papers

Journal of Strength and Conditioning Research
Robert G LockieXanne A K Janse de Jonge
Journal of Strength and Conditioning Research
Caleb W DobbsMichael R McGuigan
International Journal of Sports Physiology and Performance
Warren B YoungMichael Crichton
© 2021 Meta ULC. All rights reserved