Transcontinental railroads in and near the United States (1887). A transcontinental railroad is a contiguous network of railroad trackage that crosses a continental land mass with terminals at different oceans or continental borders.
Normal cervical range of motion is. 1  Flexion â 80 to 90 degrees. 2  Extension â 70 degrees. 3  Lateral flexion â 20 to 45 degrees on both sides.  Rotation â 90Â° of rotation to both sides.
Proven solution for patients who suffer from neck pain and/or headaches. Highly reliable for cervical extension strength testing and dynamic variable resistance training. Isometric testing can be performed every 3Â° through the normal 126Â° range of motion. Safety features include dual weight stacks with a stroke length of only 1.5 in. during a full-range dynamic contraction.