FROM STRIDE PERIOD TO STRIDE FREQUENCY

The stride-cycle frequency of gait data is often estimated by taking t he inverse of the average stride-cycle time (stride period) over sever al stride-cycles. We derive the density function of the stride-cycle f requency frequency (stride frequency) and describe some of its propert ies. We also show the conditions under which the inverse of the mean s tride period is a 'good' estimate of the mean stride frequency. (C) 19 98 Elsevier Science B.V.