Abstract
Objectives
This study aimed to investigate kinematic changes experienced during running-induced
fatigue. Further, the study examined relations between kinematic changes and core
endurance.
Design
Repeated measures and correlation.
Methods
Seventeen novice runners participated in a running-induced fatigue protocol and underwent
core endurance assessment. Participants ran at a steady state corresponding to an
intensity of 13 on the Borg scale and continued until 2 min after a Borg score of 17 or 90% of maximum heart rate was reached. Kinematic data
were analyzed for the lower extremities and trunk throughout a running protocol and,
on separate days, core endurance measures were recorded. Changes in pre- and post-fatigue
running kinematics and their relations with core endurance measures were analyzed.
Results
Analysis of peak joint angles revealed significant increases in trunk flexion (4°),
decreases in trunk extension (3°), and increases in non-dominant ankle eversion (1.6°)
as a result of running-induced fatigue. Post-fatigue increased trunk flexion changes
displayed a strong to moderate positive relation with trunk extensor core endurance
measures, in contrast to expected negative relations.
Conclusions
Novice runners displayed an overall increase in trunk inclination and increased ankle
eversion peak angles when fatigued utilizing a running-induced fatigue protocol. As
most pronounced changes were found for the trunk, trunk kinematics appear to be significantly
affected during fatigued running and should not be overlooked. Core endurance measures
displayed unexpected relations with running kinematics and require further investigation
to determine the significance of these relations.
Keywords
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Article info
Publication history
Published online: June 21, 2013
Accepted:
May 23,
2013
Received in revised form:
April 29,
2013
Received:
November 6,
2012
Identification
Copyright
© 2013 Sports Medicine Australia. Published by Elsevier Inc. All rights reserved.
