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Asian J Kinesiol > Volume 19(3); 2017 > Article
The Official Journal of the Korean Academy of Kinesiology 2017;19(3):83-88.
DOI: https://doi.org/10.15758/jkak.2017.19.3.83    Published online July 30, 2017.
Correlation Between Leg Length Difference with Pelvic and Shoulder Level, Weight Distribution, Ankle Muscle Strength.
Young-Taek Doo, Yeon-woo Jeong
Kwangju Woman's University
Correspondence:  Yeon-woo Jeong,
Email: pt10335@kwu.ac.kr
Received: 28 June 2017   • Accepted: 20 July 2017
Abstract
PURPOSE
The purpose of this study was to investigate the correlation between leg length difference with pelvic and shoulder level, weight distribution, ankle muscle strength.
METHODS
The subjects were consisted of 49 female students whose leg length was 15mm or more among 90 female. The height of the pelvis and shoulder level were measured using the Global Posture System (GPS). The foot pressure was measured using a foot scan, and ankle muscle strength was measured using a Commander Muscle Tester.
RESULTS
There was a statistically significant positive correlation between structural leg length, pelvic height, shoulder height, and ankle instability(p<.05), while ankle dorsiflexion and inversion muscle strength were statistically significant negative correlation(p <.05).
CONCLUSION
The greater the difference in leg length, the greater the difference in pelvic level. The greater the difference in shoulder level, the greater the dorsiflexion strength of the ankle joint, especially the higher the shoulder height, the greater the ankle dorsiflexion strength. It was found that the greater the dorsiflexion strength of the ankle joint, the less the inversion strength. In conclusion, misalignment of the lower limb may cause back and neck and shoulder pain and ankle joint injury, so it is necessary to recognize the importance of proper posture and habit of the lower limbs.
Keywords: leg length difference, pelvic level, shoulder level, ankle joint muscle strength, foot pressure
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