The Correlation between Trunk Movement and Postural Control in Physical Activities
BACKGROUND:The range of center of gravity(COG)changes during movement is closely related to the range and coordination of joint motion.OBJECTIVE:This study aims to investigate the impact of trunk movement range on the range of COG changes,using the trunk as an example.METHODS:A total of 35 students(27 males,8 females)from Zunyi Medical University were randomly recruited.The PN3 Pro advanced inertial motion capture system was used to collect kinematic data during the subjects'backward running movements.The variables analyzed were the range of trunk movement and COG changes.Pearson correlation coefficients were calculated to determine the degree of correlation.RESULTS:During the left support phase,the Y-axis COG changes showed correlations with trunk flexion,lateral flexion,and rotation.Additionally,the trunk movements in all three axes demonstrated correlations.During the first flight phase,the X-axis and Z-axis COG changes were correlated with trunk movements in all three axes.During the right support phase,the Y-axis COG changes were correlated with trunk flexion,lateral flexion,and rotation.During the second flight phase,the Y-axis COG changes were correlated with trunk movements in all three axes,as well as self-changes in the X-axis and Y-axis.CONCLUSION:Movements dominated by the non-dominant side require the engagement of more joints to maintain dynamic balance and postural stability.
backward runningtrunk movement rangecenter of gravity changescorrelation analysis
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