hi.initially you can start with mild exercises isometrically.it will not do any harm.this will increase your muscle power.Range of motion exercises can be done as your therapists advice.he can assess your problem then and there.wat i said was to do one of the exercise session after your traction.it will be beneficial.even you can increase the timing for your traction. i don think so traction will be helpful with seven minutes.take advice regarding this with your therapist before you change the time.