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Some EMG and takeoff features to characterise alpine skiers

This work, based on theoretical knowledge and an experimental test, suggests a new laboratory model for collection and processing informations in alpine skiing. Experimental procedure included measurement of surface EMG signal of rectus femoris muscle, vastus lateralis muscle (bilaterally), and ground reaction force vector in sagittal plane while performing maximal attempted long jump from standing position. eight subjects participated in the experiemnt, seven males and one female, being of different - but all of high quality - sport status. The three among them were top competitors of an Olympis level. Visual insight and correlation analysis of results have revealed appreciable differences between subjects in the tested sample, as well as differences of particular EMG patterns in the same subject. The findings may be used as quantitative indices in the process of planning and programming of training.

skiing; takeoff; surface EMG; biomechanics; neuro-muscular system

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