Kinect-based Gait Analyses Of Patients With Parkinson's Disease, Patients With Stroke With Hemiplegia, And Healthy Adults

ObjectiveTo identify easily accessible parameter of normalized stride length (SL) that might be utilized as typical index for assessing illness conditions of patients with Parkinson's disease (PD), patients with stroke with hemiplegia.Methods1. Subjects: The datasets were collected from stroke and PD patients who visited to the PLA General Hospital and the Jinan Military General Hospital, and healthy counterparts.2. Facilities:?Site: a 5 to 6 meters long walking space without disturbance by passersby. ?Article: A Kinect fixed on a tripod at a height of 1.0 m. Clips and a computer with video software of Kinect and Windows 10.3. Steps: ?All of the subjects were agreed to participate this experiment. Detailed and comprehensive nervous system examination and scale assessments of Unified PD Rating Scale (UPDRS) and Fugl-Meyer lower extremity score (FMA-L) were operated before recording the videos of walking. If combined with diseases such as limb malformation, bone fracture and other nervous system diseases like neuromuscular disorders and ataxia that would affect the walking manner, patients were excluded. ?Obtaining the parameter of normalized SL by means of Kinect and corresponding software. ?Making a detailed analysis between healthy individuals, patients with PD and patients with stroke with hemiplegia using normalized SL.Results1. The datasets were collected from 14 healthy individuals (7 males, mean age:58.57 ± 11.29 years), 14 stroke patients (10 males, mean age: 61.86 ± 15.83 years), and 14 PD patients (7 males,mean age: 65.43±9.88 years).2. The normalized SL value of normal subjects differed significantly from those of patients with stroke or PD. In patients with stroke with hemiplegia, the SL was significantly correlated with the FMA-L score (r=0.815, P=0.000). In patients with PD,the normalized SL was significantly correlated with the UPDRS score (r=-0.768,P=0.001) as well as the UPDRS-II (r=-0.747, P=0.002) and UPDRS-III (r=-0.769,P=0.001) subscale scores.3. There were larger significant differences in SL values between the affected and normal sides as the illness condition became more seriousConclusion1. Kinect based normalized SL values of the normal group differ significantly from those of the two patient groups, but this parameter was not able to definitively distinguish stroke patients from PD patients.2. Kinect based normalized SL value is valid for assessing the motor function of patients with PD in that normalized SL has the significant correlation with UPDRS- ?,especially UPDRS-?, and is possible, to some extent, to evaluate general condition for such parameter is also has the correlation with UPDRS.3. Kinect based normalized SL value should only be used to assess motor function in the lower extremities of stroke patients.4. Kinect based minimum distance of SL can reflect the rehabilitation condition of the lower extremities of stroke patients.