Characterized by back, leg and neck pain, spinal stenosis affects ... Standing, walking and activities that cause extension of the lumbar spine often make pain worse. Sitting, leaning forward ...

The maximum isometric force of the neck extensor muscles was measured with the thoracic support located at five different levels. The highest level was set at the level of the spine of the scapula ...

The threshold for spinal injury of an occupant is usually higher than the threshold for vehicle damage. Two thousand volunteer collisions have never produced chronic neck symptoms. [19] Collisions ...