Comparison of three methods for obtaining plantar pressures in nonpathologic subjects

B Meyers-Rice Department of Physical Therapy, Northern Arizona University, Flagstaff 86011.

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L Sugars Department of Physical Therapy, Northern Arizona University, Flagstaff 86011.

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T McPoil Department of Physical Therapy, Northern Arizona University, Flagstaff 86011.

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MW Cornwall Department of Physical Therapy, Northern Arizona University, Flagstaff 86011.

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The purpose of this study was to determine if pressure data, collected after taking one step or two steps, were similar to values obtained by using the traditional midgait method. Ten healthy subjects, with a mean age of 27 years, walked across a sensor platform sampling at 70 Hz. Each subject was randomly assigned to take one step, two steps, or multiple steps (midgait method) across the sensor platform. The results of the study indicate that the two-step method, in comparison with the one-step method, provides pressure data more representative of the midgait method, and different values for pressure and force will be obtained, depending on the method of pressure data collection selected by the clinician.

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