作者: Aaron M. Kociolek , Peter J. Keir
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摘要: Objective: The aim of this study was to determine the effects video playback speed on posture matching reliability distal upper extremity. Background: Video is frequently used in ergonomic assessments, yet there remains a need viewing observations. Method: Participants were 7 graduate students experienced with posture-based observational methods. Categorical scales evaluate forearm pronation/supination, wrist flexion/extension, radioulnar deviation, and hand activity from workplace at three speeds (quarter, half, real time). Wrist flexion/extension also evaluated frame-by-frame method. Results: Posture counts increased slower for hand, but percentage durations each category similar all interrater scores slow-motion remained low even quarter-time playback. highest found analysis categories (percentage agreement = 84.9% ± 1.3%; kappa 0.54 0.02). Conclusion: Although number scales, similar, only slightly Application: Reviewing using or methods improves extremity reliability. However, assessment tools based duration may not be appreciably enhanced by slowing speed. Thus, time should justified respect needs.