Purpose: The aim of this study is to determine intra and inter-session repeatability and reliability of OHM 3000 for reporting static and dynamic pressures in healthy Indian population. Methods: Using OHM 3000, twenty-eight healthy adults who did not present any gait abnormalities or musculoskeletal conditions were assessed one week apart for static and dynamic pressure. Bipedal stance test was used for assessing static variables- maximum pressure, average pressure, contact area, and weight distribution; whereas dynamic test was used for assessing dynamic variables- maximum pressure, average pressure, and contact area. Each participant performed three trials under supervision of each investigator. Results: Reliability was devised using ICC values and coefficient of variance for static and dynamic variables. ICC values for static and dynamic variables were reported to range between 0.88 to 0.94 and 0.61 to 0.98 respectively. Covariance values were reported to be lower than 13% in static and dynamic pressures recorded by both investigators. Conclusion: The study reports that OHM 3000 is a reliable device for assessing static and dynamic pressure in healthy adults demonstrating moderate to good reliability. KEYWORDS: Gait, Foot, Plantar Pressure.

Purpose: The aim of this study is to determine differences in plantar pressure distribution and centre of pressure (COP) characteristics in normal and at feet individuals. Methods: Forty individuals (20 normal and 20 at feet) were included in this study for pressure analysis using OHM 3000 (Mumbai, India) pressure system. Dynamic pressure parameters were recorded for four regions- toes, forefoot, midfoot, and hindfoot while walking. Dynamic parameters included maximum pressure, arch index, centre of pressure excursion index, and pressure time integral (PTI). The COP excursion for both the groups were macroscopically evaluated. The independent t-test was used for determining the pressure difference between both the groups. Results:The at feet group reported maximum pressure on the midfoot region relative to the normal foot group. The PTI was recorded higher over the midfoot and the toe region in the at feet group than those of the normal foot group. The COP excursion in dynamic state was observed to be traversing straight from the heel to the hallux in at feet group in contrary to the normal foot group which demonstrated a medial shift at the forefoot region. Conclusion: The study reports that the individuals with at feet exert increased plantar pressure on the midfoot region compared to that of the normal foot individuals. The COP excursion in at feet individuals during walking is straight compared to that in the normal foot individuals, which we believe is due to reduced medial longitudinal arch and hyper pronation at the foot.

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