Parameters that remain consistent independent of pausing before gait-initiation during normal rise-to-walk behaviour delineated by sit-to-walk and sit-to-stand-and-walk

Background: Rising-to-walk is an everyday transitional movement task rarely employed in gait rehabilitation. Sit-to-walk (STW) and sit-to-stand-and-walk (STSW), where a pause separates sit-to-stand and gait-initiation (GI) represent extremes of rising-to-walk behaviour. Delayed GI can indicate pathological impairment but is also observed in healthy individuals. We hypothesise that healthy subjects express consistent biomechanical parameters, among others that differ, during successful rising-to-walk task performance regardless of behaviour. This study therefore sought to identify if any parameters are consistent between STW and STSW in health because they represent normal rise-to-walk performance independent of pause, and also because they represent candidate parameters sensitive enough to monitor change in pathology. Methods: Ten healthy volunteers performed 5 trials of STW and STSW. Event timing, ground-reaction-forces (GRFs), whole-body-centre-of-mass (BCoM) displacement, and cent...背景：起立行走（Rising-to-walk）是日常过渡性动作任务，在步态康复中应用较少。坐起行走（Sit-to-walk, STW）与站起后暂停再行走（Sit-to-stand-and-walk, STSW）为起立行走行为的两个极端场景：后者的站起阶段与步态启动（gait-initiation, GI）之间存在明确暂停。步态启动延迟既可提示病理损伤，也可见于健康人群。本研究假设：健康受试者在成功完成起立行走任务时，无论采用何种行为模式，其生物力学参数均存在一致性特征，同时也存在差异化参数。因此，本研究旨在明确健康人群中STW与STSW之间是否存在共通的生物力学参数——这类参数既能代表不受暂停环节影响的正常起立行走表现，也可作为足够敏感的病理变化监测候选指标。方法：招募10名健康志愿者，完成5次STW与STSW任务测试。采集指标包括事件时序、地面反作用力（ground-reaction-forces, GRFs）、全身质心（whole-body-centre-of-mass, BCoM）位移以及重心（cent...）