Reliability and Validity of Posterior Peak Method Using Trunk Acceleration during Gait in Post-stoke Hemiplegic Patients

Abstract

Determination of heel contact from the anterior-posterior component of acceleration is needed in gait analysis using a tri-axis accelerometer. However, detection of acceleration waveform consistent with heel contact during gait is difficult in post-stroke hemiplegic patients. The study aimed to investigate the effectiveness of the posterior peak detection method for extracting temporal parameter. The results obtained were highly reliable (Intra-class Correlation Coefficient = 0.97) and validity (r = 0.99, p < 0.01). Therefore, the posterior peak detection method could be a useful method to extract the temporal parameter.