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http://dx.doi.org/10.15207/JKCS.2019.10.9.063

A convergence study of the effects of asymmetric standing posture on knee joint position and lower extremity muscle activity in subjects with hyper-extended knee  

Jung, Sung-hoon (Department of Physical Therapy, Yonsei University)
Ha, Sung-min (Department of Physical Therapy, Sangji University)
Publication Information
Journal of the Korea Convergence Society / v.10, no.9, 2019 , pp. 63-68 More about this Journal
Abstract
The purpose of this study was to investigate the effect of hyper-extended knee and asymmetric standing posture on knee joint position and lower extremity muscle activity. Thirty-three voluntary participants participated and included sixty legs in the study. The sixty legs were divided into two groups: hyper-extended knee and normal group. The muscle activity and knee extension angle were measured. In the asymmetric standing posture, the knee joint extension angle and the muscle activity of the gastrocnemius were statistically significant between the normal group and the hyper-extended knee group. Based on the results, we confirmed that the asymmetric standing posture increases the hyper-extended knee. Therefore, it will contribute to the establishment of therapeutic guide for the subjects with hyper-extended knee to maintain the symmetrical standing posture, and future studies need to be conducted including the effects of the hip joint and ankle joints.
Keywords
Hyper-extended knee; Knee extension angle; Asymmetric standing posture; Electromyography; Gastrocnemius; Convergence;
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