Postural mechanics and movement control play fundamental roles in artistic creation, particularly in painting, where precision and fluidity of motion directly influence artistic outcomes. This study investigated the biomechanical relationships between posture, movement, and artistic control in painting practice through a comprehensive analysis of 38 artists (22 Female, 16 Male) ranging from novice to expert-level practitioners in traditional Chinese and contemporary painting techniques. Using an integrated measurement approach combining Motion Capture System (MCS) (Vicon Motion System), electromyography (EMG), and force plate analysis, we examined postural dynamics, movement patterns, and their effects on artistic precision across varied painting conditions. Results revealed significant correlations between postural stability and painting precision (r = 0.82, p < 0.001), with experienced artists demonstrating superior postural control strategies compared to novices. Analysis of seated versus standing positions showed distinct advantages in stability metrics (88.5 ± 4.2 vs. 82.3 ± 5.6 stability index, p < 0.01), though standing positions offered a more excellent range of motion (58.7 cm ± 7.2 cm vs. 42.3 cm ± 5.6 cm brush reach, p < 0.001). Environmental factors, particularly easel configuration and lighting conditions, significantly impacted performance, with optimal easel height (90%–105% of eye level) correlating with enhanced precision scores (improvement of 18.4 ± 4.2%, p < 0.001). Tool selection analysis demonstrated that medium-length brushes (20 cm–30 cm) provided optimal comfort (8.7 ± 0.9 out of 10) and precision (88.6 ± 3.8 out of 100) scores. Extended painting sessions revealed progressive changes in muscle activation patterns, with expert artists maintaining more consistent movement patterns despite fatigue (8.4 ± 1.2% vs. 18.7 ± 3.2% movement variability, p < 0.001). These findings provide quantitative evidence for the importance of proper postural mechanics in artistic creation and offer practical insights for optimizing painting performance through improved biomechanical awareness and environmental setup.
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