System for training optimisation, the system comprising: • at least one mechanical load sensor (3; 17, 18) for measuring a load parameter • a storage module for storing data which are dispatched by the at least one sensor (17, 18) in a log file; • a training advice module which is arranged for determining a personal training advice related to a load assessment of the user based on at least the data stored in the log file, • at least one output device such as a display, a sound signal, audio output, voice output or a vibrating element for outputting said training advice to said user; • the load parameter that is measured by the sensor is a mechanical load parameter which is indicative for a mechanical load of the training and that is chosen from the group consisting of number of steps, distance, rate of pronation, maximal pronation, timing, rate of loading, impact peak, active peak, alignment of joints (such as hip, ankle, knee, foot, elbow, wrist), technique, force, impact, speed, rotation, rotational speed, leg stiffness, vertical stiffness, torsional stiffness, floor-foot contact time and acceleration; characterized in that the training advice module that determines a personal training advice is configured to base that training advice on a mechanical load assessment of the user based on a cumulative mechanical load parameter that is indicative for the mechanical load history of the training sessions which took place before the training session to be determined, the training advice comprising a type of training to be performed in the next training session so that when the cumulative mechanical load parameter or mechanical load history is high in a range, the training advice module will schedule a training session with a relatively small mechanical load so that the body of the user will have the opportunity to recover and so that when, on the other hand, the cumulative load parameter is low in said range, the training advice module will schedule a training session with a relatively high mechanical load so that the body is stimulated to expand its biomechanical loadability using the mechanism of supercompensation. • at least one mechanical load sensor (3; 17, 18) for measuring a load parameter • a storage module for storing data which are dispatched by the at least one sensor (17, 18) in a log file; • a training advice module which is arranged for determining a personal training advice related to a load assessment of the user based on at least the data stored in the log file, • at least one output device such as a display, a sound signal, audio output, voice output or a vibrating element for outputting said training advice to said user; • the load parameter that is measured by the sensor is a mechanical load parameter which is indicative for a mechanical load of the training and that is chosen from the group consisting of number of steps, distance, rate of pronation, maximal pronation, timing, rate of loading, impact peak, active peak, alignment of joints (such as hip, ankle, knee, foot, elbow, wrist), technique, force, impact, speed, rotation, rotational speed, leg stiffness, vertical stiffness, torsional stiffness, floor-foot contact time and acceleration; characterized in that the training advice module that determines a personal training advice is configured to base that training advice on a mechanical load assessment of the user based on a cumulative mechanical load parameter that is indicative for the mechanical load history of the training sessions which took place before the training session to be determined, the training advice comprising a type of training to be performed in the next training session so that when the cumulative mechanical load parameter or mechanical load history is high in a range, the training advice module will schedule a training session with a relatively small mechanical load so that the body of the user will have the opportunity to recover and so that when, on the other hand, the cumulative load parameter is low in said range, the training advice module will schedule a training session with a relatively high mechanical load so that the body is stimulated to expand its biomechanical loadability using the mechanism of supercompensation.