Table 1
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Center-of-Pressure Calculations. |
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| COPvel: The mean value of the instantaneous velocity of the COP in a given direction during a given time period |
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| M/L COPsd: Overall standard deviation of sway in the M/L direction in a given time period for a given number of trials |
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| COParea: An area defined by the maximum (max) anterior (ant), posterior (post), medial (med), and lateral (lat) sways during a given time period. |
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| M/L COPmax: Maximum distance between the instantaneous COP position and the average COP position during a given time period. |
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Calculations for the following postural stability measures are presented in Table 1: Anterior/Posterior Center-of-Pressure Velocity (A/P COPvel); Medial/Lateral Center-of-Pressure Velocity (M/L COPvel); Medial/Lateral Center-of-Pressure Standard Deviation (M/L COPsd); Center-of-Pressure Area (COParea); and Medial/Lateral Center-of-Pressure Maximum Excursion (M/L COPmax). t = A given time point; T = Number of data points per trial; N = Number of trials | |
Ross et al. Journal of NeuroEngineering and Rehabilitation 2007 4:47 doi:10.1186/1743-0003-4-47 |
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