Correlation between postural biomechanical changes and musculoskeletal disorders among security guards: A cross-sectional study

This is a cross-sectional study done to investigate the relationship between changes in the postural variables in different planes and musculoskeletal disorders among security guards. Participants between 30-50 years was recruited after fulfilling the selection criteria. Posture was analyzed using photogrammetric method in sagittal & coronal plane and further analysis was done using posture analysis app (APECS). And for analysis of musculoskeletal disorders, Nordic musculoskeletal questionnaire was used and pain level was measured using Numeric pain rating scale (NPRS).

本研究为一项横断面研究（cross-sectional study），旨在探究不同平面姿势变量变化与保安人员肌肉骨骼疾患（musculoskeletal disorders）之间的关联。研究招募了符合入选标准的30至50岁参与者，采用摄影测量法（photogrammetric method）对参与者在矢状面（sagittal plane）与冠状面（coronal plane）的姿势进行分析，并通过姿势分析应用软件（APECS）开展进一步分析。针对肌肉骨骼疾患的评估，本研究采用北欧肌肉骨骼问卷（Nordic musculoskeletal questionnaire），并使用数字疼痛评分量表（Numeric pain rating scale, NPRS）对疼痛程度进行测定。