Affiliations: [a] Department of Rehabilitation and Physical Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan | [b]
Department of Rehabilitation and Physical Medicine, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| [c] Department of Rehabilitation, Kirishima Rehabilitation Center of Kagoshima University Hospital, Kagoshima, Japan | [d] Department of Rehabilitation, Tarumizu Municipal Medical Center, Tarumizu Central Hospital, Kagoshima, Japan | [e] Department of Rehabilitation, Koshinkai Ogura Hospital, Kagoshima, Japan
Correspondence:
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Corresponding author: Shuji Matsumoto, Department of Rehabilitation and Physical Medicine, Graduate School of Medicine, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan. Tel.: +81 3 3822 2131; Fax: +81 476 99 1917; E-mail: [email protected]
Abstract: BACKGROUND:Gait analysis, such as portable gait rhythmogram (PGR), provides objective information that helps in the quantitative evaluation of human locomotion. OBJECTIVE:The purpose of this study was to assess the reliability of PGR in post-stroke patients. METHODS:Two raters (A and B) examined 48 post-stroke patients. To assess intra-rater reliability, rater A tested subjects on three separate occasions (Days 1, 2, and 3). To assess inter-rater reliability, raters A and B independently tested participants on the same occasion (Day 3). RESULTS:There was no significant systematic bias between test occasions or raters. Intraclass correlation coefficient values were 0.93–0.97 for intra-rater reliability at both the comfortable speed and maximum speed, and 0.97–0.98 (comfortable speed) and 0.97–0.99 (maximum speed) for inter-rater reliability. The standard error was 1.25–1.49 (comfortable speed) and 1.62–1.77 (maximum speed) for intra-rater investigation, and 1.04–1.32 (comfortable speed) and 0.91–1.26 (maximum speed) for inter-rater investigation. At the 90% confidence level, the minimum detectable change ranged from 2.9–4.1%, and the error of an individual’s score at a given time point ranged from ±2.1–2.9%. CONCLUSIONS:Based on this excellent reliability of the PGR in post-stroke patients, it can be recommended as a simple test of gait analysis in this population.
