숙련자와 비숙련자의 백스쿼트 근육시너지 비교 = Comparison of Muscle Synergies in Back Squats Between Experts and Novices

다국어 초록 (Multilingual Abstract)

Purpose: The objective of this study is to identify the differences in muscle coordination patterns during squatexercises based on varying levels of proficiency.
Methods: The study included an experienced group (nine participants, age 31.3±1.5 years, height 174.7±1.3cm, weight 81.4±2.1 kg) and a novice group (eight participants, age 31±1.1 years, height 176.8±2.7 cm,weight 75.1±4.4 kg). Muscle activation levels in the trunk and lower extremities were measured, and musclesynergy analysis was conducted to determine muscle coordination patterns during squats. The extractedmuscle synergies were classified using the k-means clustering method.
Results: The muscle synergy analysis revealed 3.11±0.33 muscle synergies in the experienced group and2.75±0.46 in the novice group. The k-means clustering results identified a total of five clusters, withdifferences in cluster preferences between the experienced and novice groups. Experienced individualspreferred clusters that used large muscles in the lower extremities during squats, while novices favored clustersthat engaged smaller muscles in the distal parts of the lower extremities.
Conclusion: These findings suggest that experienced individuals use larger muscles to more effectively handleweight during squats, whereas novices rely more on smaller muscles, which may result in lower resistanceto weight and a higher risk of injury. The results of this study can serve as foundational data for beginnersto learn efficient training methods and develop strategies to prevent injuries.