2022 Volume 2 Pages 41-46
Objective: This study aimed to investigate the relationship between the arm swing angle, arm swing angle asymmetry, and spinal rotation angle of natural gait in healthy elderly females.
Methods: Ten healthy elderly females (mean age: 66.2 ± 2.0 years) participated in this study. The kinematics data of the left and right humeri (L_arm, R_arm), 7th thoracic spinous process (T7), 3rd lumbar spinous process (L3), and the 2nd sacral spinous process (S2) were recorded using motion sensors. We evaluated the average difference values and the correlation of each sensor.
Results: The angle of the L_arm significantly exceeded that of the R_arm, and arm swing exhibited asymmetry. The rotation angles of T7 and L_arm and T7 and ASI were both significantly correlated; although correlation was negative and positive, respectively.
Conclusion: The passive factor of the arm swing angle during natural walking due to thoracic spine rotation is small, and many factors are involved in arm swing asymmetry.
