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To test the reliability of the Wisconsin Gait Scale (WGS) and the Gait Abnormality Rating Scale (GARS) for hemiplegic Chinese subjects, as well as to establish the concurrent validity of these two scales with clinical measurements. [Subjects] Twenty hemiplegic stroke subjects were recruited for this study. [Methods] The subjects walked along a 10-meter walkway and their gait was videotaped from 4 directions. Two physical therapists assessed the subjects' gait using the aforementioned scales by watching the video tape. The Intraclass Correlation Coefficient (ICC) was calculated for the two physiotherapists' scores for each category and the total scores to assess the reliability. Concurrent validity was tested by comparing the total scores to subjects' walking speed, the Fugl-Meyer assessment, the Motricity Index of the lower limb, and the Composite Spasticity Index of the lower limb. [Results] The ICC of WGS was 0.961 for intra-rater reliability, and 0.945 for inter-rater reliability. The ICC of GARS was 0.708 for intra-rater reliability and 0.875 for inter-rater reliability. The correlations of the two scales with walking speed, the Fugl-Meyer assessment and the Motricity Index were statistically significant. [Conclusion] Both the Wisconsin Gait Scale and the Gait Abnormality Rating Scale are reliable and valid protocols for measuring the hemiplegic gait of stroke patients.

The reliability, validity and correlation of two observational gait scales assessed by video tape for Chinese subjects with hemiplegia