A method of monitoring or assessing the motion of the limbs of a body whenperforming repetitive cyclic activityuses inertial measurement units secured to each of the limbs to be monitored.The operation of all of the IMUs is synchronised byway of a pulse from a computer. On performing the repetitive cyclic activitysuch as walking, running, trotting or galloping, theoutputs of the IMUs are assembled and analysed in realtime, to determine therelative phase of the limb movements, from whichan assessment of the gait may be made.
