Effects of Different Positions on Mechanical Traction Outcome

Participants will receive traction therapy as follows: force will start at 25% of Body weight, gradually increasing until the tolerance for pulling is reached with maximum of 50% of body weight. The session will be 15 minutes long (1min for acceleration, 13 min application, 1min deceleration); it will be intermittent with ratio of 30 s on and 10s off