connected and positioned between lower back arm 20 and lower back support 74 controls 92 provide adjustments for the hip size of the user fig1 is a section view showing the preferred embodiment of a ratchet for the shoulder harness fig1 shows ratchet 100 for shoulder harness 22 and upper back support 72 fig1 is a section view showing the preferred embodiment of real time position display unit 76 display unit 76 includes run screen 110 current status screen 112 cycle in use screen 114 soft key functions 116 and conventional key pad 118 fig1 is a sectional view showing the preferred embodiment of magnetic brake controls fig1 shows control unit 140 including magnetic brake controls 120 and 122 controls 120 and 122 are connected to control unit 140 computer 142 and magnetic brakes 80 and 82 through conventional circuitry not shown in one embodiment we employ a computer chip that tracks all aspects of performance over time in this embodiment a means measures at least one or all aspects of performance and converts the performance into an electrical signal representative of the performance being monitored a programmed microprocessor including the computer chip is configured to identify the signal representative of the performance being monitored the programmed microprocessor also is configured to identify and store the parameter performance being monitored this enhanced version allows the professional to track their students it also is used for the physical therapist and chiropractor to monitor a patient in another embodiment shoulder harness 22 is not a true harness connected to a user 39 s shoulders by a means such as a strap or belt preferably shoulder harness 22 has a distal end with.