earticle

영어

Purpose: An adult male with stage 2 varus knee was provided a squat exercise combining visual feedback using mirror and ball exercises to examine changes in the Q-angle and the muscle activity of the medial and lateral muscles. This study aimed to determine effective methods for correcting alignment and achieving normal alignment of the lower extremities. Method: A total of 30 participants were included in this study through random sampling. Participants were randomly assigned to the experimental (the visual feedback squat exercise group using a ball, 15 participants) and control (\the visual feedback squat exercise group without a ball, 15 participants) groups. The exercise intervention comprised four exercises designed based on prior research, performed over 3 weeks. Muscle activity and lower extremity alignment measurement equipment were used as measurement tools. Statistical analysis included the paired samples t-test for within-group comparisons and the independent samples t-test for between-group comparisons. Result: The experimental group showed significant improvements in Q-angle and muscle activity of the medial and lateral muscles compared to the control group (p <.05). Conclusion: These findings suggest that the visual feedback squat exercise using a ball is more effective than visual feedback squat exercises alone.