基于无标记运动捕捉技术探讨太极拳联合上肢康复训练对脑卒中后患者双手协调运动学特征的影响OA

Objective This study investigated the effects of Tai Chi combined with upper limb rehabilitation training on bi-manual coordination kinematic characteristics in post-stroke patients using markerless motion capture technology.Methods A total of 84 stroke patients admitted to the Rehabilitation Hospital Affiliated to Fujian University of Traditional Chinese Medicine between March 2022 and January 2024 were recruited.Participants were randomly assigned to a control group or a Tai Chi group via the ran-dom number table method,with 42 cases in each group.During the study,6 cases dropped out in the control group and 8 in the Tai Chi group,and finally 36 cases in the control group and 34 cases in the Tai Chi group were included in the final analysis.Both groups received routine upper limb rehabilitation training,once daily,60 min per session,5 days per week,for 4 consecutive weeks.The Tai Chi group additionally received Tai Chi training,once daily,60 min per session,5 days per week,for 4 consecutive weeks.Kinematic data were collected at a 30 Hz sampling rate via two Microsoft Azure Kinect depth sensors and iPi Soft Motion Capture software based on a deep learning-powered skeleton tracking algorithm,and processed and analyzed using a custom-built data analy-sis system.Bilateral symmetric coordination tasks were evaluated across five dimensions:total movement time(MT),right-hand transfer time,left-hand transfer time,normalized reach-to-pickup time coefficient(RTP),and transfer coordination coefficient(TC).Bilateral asymmetric coordination tasks were assessed from four dimensions:pressing hand movement time,drawer hand movement time,normalized onset synchronization coefficient(nOSc),and normalized pull-to-press time coefficient(nPTPc).Results Com-pared with pre-treatment,both groups showed significant reductions in MT and right-hand transfer time after treatment(P<0.05),as well as significant decreases in RTP and TC values(P<0.05).In the Tai Chi group,left-hand transfer time also decreased significantly(P<0.05).Compared with the control group,the Tai Chi group showed significant reductions in MT(P<0.05)and TC(P<0.05)after treatment,while no significant differences were observed in right-hand transfer time,left-hand transfer time,or RTP(P>0.05).Com-pared with pre-treatment,both groups showed significant reductions in pressing hand movement time and drawer hand movement time after treatment(P<0.05),as well as significant decreases in nOSc and nPTPc values(P<0.05).However,no significant differ-ences were found between the two groups in pressing hand movement time,drawer hand movement time,nOSc and nPTPc(P>0.05).Conclusion Markerless motion capture technology-based observation indicates that Tai Chi combined with upper limb reha-bilitation training can improve bimanual coordination function in post-stroke patients.