A biomechanical analysis of the effects of hand weights on the arm-swing while walking and running
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Ten female track runners (E age = 21.5) volunteered as subjects to determine if 4 lb hand weights would alter shoulder and elbow displacements and angular velocities under various locomotion speeds. Subjects were videotaped walking at 3.0 mph and running at 6.0 mph at a 0% grade, with and without hand weights. The ARIEL (APAS) system was used to create a 2-dimensional image of each subject while performing. A 2-way ANOVA with repeated measures (p < -05) was used to test the hypothesis. The F values for elbow and shoulder angular velocity with and without hand weights were 2.07 and 1.49, respectively. The values for shoulder and elbow angular velocity while walking and running were 1.87 and 3.96, respectively. The speed and condition interaction for the shoulder and elbow angular velocity during walking and running with and without hand weights were 1.55 and .99, respectively. The F values for elbow and shoulder angular displacements with and without hand weights were 2.06 and .56, respectively. The F values for walking and running were 4.03 and 1.72, which failed to meet the critical F of 18.5. The speed and condition interaction for angulardisplacements at the elbow and shoulder while walking andrunning were .96 and 1.06, respectively. All values for Lheelbow and shoulder angular velocities and displacements werenot significant; Further investigations with a differentsubject population and protocol are recommended. Todetermine the effects of hand weights on the body, a3-dimensional analysis is a recommended future area ofstudy .
Walking - Physiological aspects
Running - Physiological aspects