An apparatus for training a subject to perform a specified physical activity is based on the presence of two or more kinesthetic body sensors, whether mounted on the body or separately from the body, that deliver signals to a processing system that, in turn, delivers a single output signal. This signal drives a display that delivers feedback to the subject. Multiple body sensor output signals may be combined in accordance with a predetermined algorithm to produce a single composite signal. This combining may be as simple as direct addition, or may include the combination of weighted values of the individual comparison signals. An operator may adjust the weighting values to be applied to the respective comparison signals, and may do so while the apparatus is in use. Alternately while the apparatus is in use, a proportional signal from one body sensor may drive the display, subject to suppression of such signal if the output from any number of other body sensors does not achieve preselected threshold values.
