An apparatus for use in analysing the motion of a human subject comprises a platform (1) upon which the subject stands. The platform comprises force sensors (11, 12, 13) arranged to measure forces exerted on the platform by the subject in three dimensions (along X, Y and Z axes) and a pressure sensitive mat (4) arranged to collect pressure data relating to the position of each foot of the subject on the platform. The apparatus outputs the force and pressure data to a computer (22) which comprises software for determining information relating to the motion of the subject, such as torque and angular momentum around different axes, using both the force and pressure data. In a golfing scenario, the apparatus can be used to analyse the motion of a subject whilst making a golf swing.