데드리프트 동작 시 중량 변화에 따른 하지 근활성도 분석

The deadlift is an essential resistance exercise for the lower limb and the whole body, improving muscle strength, bone mineral density, and connective tissue health. The specific movement pattern of the deadlift training may transfer to similar tasks and promote more efficient and stable lifting motion. The purpose of this study was to examine muscle activity and co-contraction patterns during deadlifts across various loads. Six healthy males between the ages of 19 and 30 participated. Muscle activity was measured using Telemyo DTS (Noraxon, USA). The results demonstrated that muscle activity and co-contraction increased as the weight increased from 40%, 60%, and 80% of 1RM. The increased co-contraction may provide the balance and stability necessary to manage heavier loads. Therefore, the result may suggest that lifting heavy without sufficient hamstring strength development (e.g., biceps femoris) may negatively affect stability and lead to injuries.