Abstract
Purpose: A 4-2-1 stepping algorithm reliably captures light touch thresholds but has not been used to assess two-point discrimination (TPD) thresholds. Therefore, the purpose of this investigation was to determine the intra- and inter-rater reliability of a 4-2-1 stepping algorithm at determining TPD thresholds.Materials and methods: Fifteen healthy, physically active young adults were assessed twice over a 1-week period using digital calipers and a 4-2-1 stepping algorithm. TPD thresholds were assessed by an expert and a novice examiner at each time point. Reliability was assessed on the plantar surface of the foot at the head of the first and base of the fifth metatarsal.Results: Three intra-rater intraclass correlation coefficient (ICC) values exceeded 0.75 and were interpreted as good. The inter-rater reliability was good with ICC values ranging from 0.76 to 0.93 at both sites during both test sessions.Conclusions: The 4-2-1 stepping algorithm demonstrates good intra- and inter-tester reliability at determining TPD thresholds on the plantar surface of the foot at the head of the first and base of the fifth metatarsal in young healthy adults.
Published Version
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