12 a the trainee may deploy grooved coupling bands 1 2 parallel to one another and thread grooved coupling bands 1 2 couple the bands to the mobile training module 3 the coupling bands are secured to the training surface 200 by any suitable means the trainee may then program the training system using a remote hand held unit or keyed entry to set the desired training resistance while running or performing any other appropriate mode of self locomotion a light weight low voltage internal battery system contained in a housing of the mobile training module controls the data entry and resistance mechanism for example an air dampening ergometer or a disk breaking system a meter may be carried by the mobile training module 3 for measuring cumulative force applied by the tethers so that the resistance may be automatically controlled based on the measured resistive force as the trainee begins to accelerate the level of braking will increase or decrease until the force detected on the tethers attached to the trainee is within a specified range of the desired load programed into the unit by the trainee the apparatus actively alters braking while the trainee is accelerating or decelerating to keep resistance within the programmed resistance profile for example a constant resistance over distance may be programmed the trainee could also program the unit to decrease resistance as.