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Abstract

The objective of this research was to conduct comparative analysis of recruited muscles group of lower limbs and the muscle activity between alpine and boarder cross athlete in carving turn. Moreover the study aims to contribute snowboarders and winter sports instructors by providing appropriate training method and strength training methodology for performance enhancement. To achieve the purpose, one alpine and one boarder cross athlete from Korean National Team for 2018 Pyeongchang Winter Olympics were chosen. SEMG were placed on three muscle groups on the left side (Lt.) and right side (Rt.) muscles of lower limbs (vastus medialis oblique (VMO), vastus lateralis oblique (VLO), lateral gastrocnemius(GL). The results obtained through the analysis are as follows. The results of comparative analysis in P1 showed the greatest recruitment of muscle activity in Rt.GL in alpine and Rt.VMO in boarder cross whereas, muscle activity in Lt.VLO were the lowest in both subjects. In P2, Lt.VLO in alpine and Rt.GL in boarder cross appeared the lowest whereas, Lt.VMO appeared the greatest in both of the subjects. In P3, Lt.VMO appeared greatest whereas, Rt.GL appeared the lowest in muscle activity in both subjects. In P4, Rt.GL appeared the lowest in both subjects. However, Rt.VMO showed the greater muscle activity in alpine and Lt.VMO showed greater muscle activity in boarder cross.