Simple regression models sometimes are employed by researchers to analyze the relationship between a dependent variable and an independent variableThe most common relationship analyzed is a linear association expressed by the following equation:y=b0+ b1xwhere y represents the dependent variable, x represents the independent variable, b0represents a constant, and b1represents the slope of the linear fitThis article demonstrates the use of simple regression applied to gait analysis. The relationship of energy consumption in milliliters of oxygen per kilogram per minute (ml/kg/ min) as a function of gait velocity in meters per minute (m/min) is studied