老年脑卒中偏瘫患者不同站立姿势下静态平衡特征的比较OA

Objective To compare static balance characteristics under different standing postures in older patients with post-stroke hemiplegia. Methods A total of 38 older patients with post-stroke hemiplegia in Jiangsu Shengze Hospital from September,2022 to August,2024 were enrolled.Static balance was assessed using the ProKin Balance Testing and Training System under seven standing postures:bipedal stance(BS),affected semi-tandem stance(ASTS),unaffected semi-tan-dem stance(USTS),affected tandem stance(ATS),unaffected tandem stance(UTS),unaffected monopedal stance(UMS)and self-selected stance(SS).Participants were required to maintain each posture for 15 seconds.Center-of-pressure(COP)parameters were recorded,including mean sway velocity in the anteroposterior direc-tion(VAP),mean sway velocity in the mediolateral direction(VML),sway area(SA),sway path length(SL),standard deviation in the anteroposterior direction(SDAP),and standard deviation in the mediolateral direction(SDML). Results Main effect of standing posture was significant in all COP parameters(F>39.793,χ2=109.632,P<0.001).SS showed smaller postural sway for most COP measures than the other postures(P<0.05).VAP,VML,SA and SL were higher during UMS than during the other postures(P<0.05).COP parameters during UTS were higher than those during BS,ASTS and USTS(P<0.05),and VAP,SA,SL and SDAP during UTS were higher than those during ATS(P<0.05).Except for VML and SDML,COP parameters during ATS were higher than those during BS,ASTS and USTS(P<0.05).VAP during USTS was higher than that during BS(P<0.05). Conclusion In older patients with post-stroke hemiplegia who have relatively good independent standing ability,COP parameters differ across standing postures.Postural sway is relatively small during SS,and great during UMS and UTS.The anteroposterior positioning of the feet during tandem stance may influence static balance control.