title: Repeatability of the accelerometric-based method to detect step events for hemiparetic stroke patients.
abstract: This study is to evaluate the repeatability of the accelerometric-method to detect step events for hemiparetic stroke patients. To evaluate this method, four adults with chronic hemiparetic stroke were participated. The repeatability of this method using a single three-axis accelerometer was evaluated with a six optical camera motion capture system. The correlation statistics and Bland-Altman plot were then used to evaluate the agreement between the step-time differences from the accelerometer data and the reflective markers data. The correlation coefficient of each two data was 0.99 (p < 0.001) and retest result was 0.99 (p < 0.001). The mean ± standard deviation (SD) between each two data along with the 95% limits of agreement (LOA = ± 1.96 SD) was 2.58 ± 2.37 ms (LOA = -2.07 ms and 7.23 ms), and retest result was 3.73 ± 2.02 ms (LOA = -0.22 ms and 7.68 ms). These results show that the suggested method is useful to detect step events for hemiparetic stroke patients.
authors.affiliation: Department of Biomedical Engineering, Yonsei University, Republic of Korea.
authors.forename: Hyo-Ki
authors.initials: HK
authors.lastname: Lee
authors.forename: Joo-Han
authors.initials: JH
authors.lastname: Kim
authors.forename: Hyoun-Seok
authors.initials: HS
authors.lastname: Myoung
authors.forename: Jung-Hun
authors.initials: JH
authors.lastname: Lee
authors.forename: Kyoung-Joung
authors.initials: KJ
authors.lastname: Lee
mesh_terms: D000054:Acceleration; D056044:Actigraphy / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005260:Female; D005684:Gait; D020233:Gait Disorders, Neurologic / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory / Q000295:instrumentation*; D010291:Paresis / Q000175:diagnosis* / Q000209:etiology; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D020521:Stroke / Q000150:complications / Q000175:diagnosis*