• Journal of Korean Physical Therapy Science
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• v.18 no.3
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• pp.71-78
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• 2011

Purpose : The purpose of this study found change that caused by various form and weight of bag. So we investigated how these things change the shoulder altitude and space between external acoustic pore and lateral malleolus and also plantar pressure. Method : We measured two different way for this study. One was backpack with 5, 10kg and another one was shoulder pack with same weight. Each trial was 10 seconds in duration with static stance posture. With these experiments, we checked space between plantar pressure, shoulder altitude, external acoustic pore and lateral malleolus with EMED system and GPS. We analyzed these results with PASW(SPSS) statistics 18.0. Result : In conclusion, there were no significantly differences in shoulder altitude by weight of pack, but average of plantar pressure and space between external acoustic pore and lateral malleolus was increased.

• Journal of the Korea Convergence Society
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• v.9 no.11
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• pp.465-477
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• 2018

The purpose of this study is to analyze the effect of three - week high altitude ski training on the myocardial performance of cross - country skiers and to provide basic data for the future improvement of cross - country skiers'. The subjects were 6 cross - country skiing male college athletes. To investigate the effects of periodic and high altitude training on cross - country skiers, a general linear model ANOVA with repeated measure And analyzed using the Paired Samples t-test. In high altitude ski training for 3 weeks, the body composition did not change but the isokinetic muscular function of the shoulder joint, hip joint, knee joint, and ankle joint was decreased. Therefore, further study is needed if it is considered that continuous strength training should be performed during the ski training period such as SP period.