고려대학교

초록/요약

ABSTRACT Effect of Close kinetic chain and Open kinetic chain Position on Proprioceptive Neuromuscular Facilitation Applied to the Unilateral Upper Extremity on the Muscle Activation of Lower Extremity Han, Hyang-Wan Department Of Sports medicine Graduate School Korea University The purpose of this study was to investigate the effect of close kinetic chain((CKC) and open kinetic chain(OKC) posion on proprioceptive neuromuscular facilitation applied to the unilateral upper extremity on the muscle activation of lower extremity. All subjects were randomly assigned to two groups: open kinetic chain group(n=5),closed kinetic chain group(n=5). .All participants were PNF patterns applied on the unilateral upper extremity in all subjects were the kinetic chain((CKC) and open kinetic chain(OKC) posion on flexion/abduction/external rotation. The hold and approximation techniques for the irradiation were applied to end range. All measurements for each subject took the following tests: pre-test, post - test in 4weeks, post-testin 8weeks. EMG data was collected from the vastus medialis, tibialis anterior , rectus femoris, and gastrocnemius muscle of both lower extreamity using surface EMG system, Each EMG value in individual muscle was normalized for maximal voluntary contraction. The data were analyzed using Two-way analysis of variance(ANOVA) with repeated measures to determine the statistical significances. The results of this study are summarized as follows. First, during for close kinetic chain(CKC) and open kinetic chain(OKC) posion on PNF pattern application , all of the %MVIC values of close kinetic chain and open kinetic chain posion increased sign ificantly compared (p<0.05) Second, The close kinetic chain(CKC) and open kinetic chain(OKC) posion on PNF pattern application was significantly increased with in the intervention period(p<.05). Third, there was a no significant open kinetic chain posion on PNF pattern application of sing muscle group with in the intervention period.(p<0.05)there was a significant close kinetic chain posion on PNF pattern application of sing muscle group with with in the intervention period.(p<0.05) Forth, interaction of the exercise position and muscle was also significant. Post-hoc tests revealed that the activation levels of vastus medialis muscle and tibialis anterior muscle was higher in the closed kinetic chain position.(p<.05) that the activation levels of vastus medialis and gastrocnemius muscle was higher in the open kinetic chain position.(p<.05). In conclusion, it was found that the application of PNF patterns to the unilateral upper extremity effect on the muscle activation of lower extremity and both open kinetic chain exercise and closed kinetic chain exercise was significantly increased muscle activity. Further studies are needed to analyzed long term effects and subjects resulting from these changed. Key ward : close kinetic chain, open kinetic chain, proprioceptive neuromuscular facilitation ,muscle activation