INVESTIGATING THE CHANGE IN 3-DIMENSIONAL KNEE AND PELVIC ANGLES DURING 30-MIN TREADMILL RUNNING IN RECREATIONAL RUNNERS: A PRELIMINARY STUDY
DOI:
https://doi.org/10.14456/jsst.2022.3Keywords:
Locomotion, Lower limb kinematics, Running analysis, Spatio-temporal analysisAbstract
This study aimed to investigate changes in knee and pelvic angles during 30-min treadmill running. Eight
recreational runners ran on a treadmill at a speed equivalent to 70% of VO2peak for 30 minutes while simultaneous
3-dimensional motion data of the lower extremities were collected using a lower limb and trunk marker model and
8 optoelectronic cameras. Knee and pelvic angles at initial contact (IC) and toe-off (TO) during the 1st and 30th
min of 5 running gait cycles were analyzed and a paired samples t-test was used to evaluate differences between
two-time points. The results showed no significant differences in 3-dimensional motion knee or pelvic (all P >0.05)
angles between the first and last minute of running. There were also no differences in left and right leg step and
stride length at IC and TO (all P >0.05). It is concluded that knee and pelvic angles do not change over the course
of a 30-min treadmill run. For the pratical implication, the runners could maintain the running pattern consistency
in lower limb kinematics when training 30-minutes run on treadmill.
treadmill.
(Journal of Sports Science and Technology 2022; 22 (1): 37-48)
(Received: 23 January 2022, Revised: 9 March 2022, Accepted: 24 March 2022)
KEYWORDS: Locomotion/ Lower limb kinematics/ Running analysis/ Spatio-temporal analysis
Corresponding author:Parunchaya JAMKRAJANG
College of Sports Science and Technology, Mahidol University, THAILAND
E-mail: parunchaya.jam@mahidol.edu
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