Representative of a user's interaction with a surface of physical exercise of a treadmill and treadmill thereof

A method for determining information representative of a user's interaction with a surface of physical exercise of a treadmill, the treadmill including:

• a base extending along a respective direction of longitudinal development, the base including a first rotating element and a second rotating element adapted to rotate around respective axes of rotation transverse to the direction of longitudinal development of the base of the treadmill, the base including a surface of physical exercise operatively connected to the first rotating element and to the second rotating element, the surface of physical exercise having a respective portion of the surface of physical exercise facing towards a user during the user's interaction with the surface of physical exercise;
• a plurality of load cells arranged below the portion of the surface of physical exercise in such a way as to detect data representative of local force vectors due to the user's interaction with the portion of the surface of physical exercise along a direction orthogonal to the portion of the surface of physical exercise, the plurality of load cells including a first pair of load cells, a second pair of load cells and a third pair of load cells arranged in series along the direction of longitudinal development of the base of the treadmill, the first pair of load cells and the second pair of load cells being adapted to define a first force plate, the second pair of load cells and the third pair of load cells being adapted to define a second force plate, the first force plate and the second force plate sharing the second pair of load cells;
• a data processing unit operatively connected to the plurality of load cells,
• the method, for each sampling time instants ti, with 1<i<N, of a plurality of subsequent sampling time instants t1, t2, . . . , tN, with positive integer N, comprising steps of:
• detecting, by each load cell of said plurality of load cells, data representative of a respective local force vector along the direction orthogonal to the portion of the surface of physical exercise in correspondence of the load cell due to the user's interaction with the portion of the surface of physical exercise;
• and
• determining, by the data processing unit, information representative of a resulting force vector due to the user's interaction with the surface of physical exercise of the treadmill based on the data representative of the local force vectors detected by the plurality of load cells.