1. On neck muscle activity and load reduction in sitting postures;Schuldt,1988
2. Quantification of tenderness by palpation and use of pressure algometers;Jensen,1990
3. Reliability of the pressure algometer as a measure of myofascial trigger point sensitivity;Reeves;Pain,1986
4. Quantitative assessment of head shoulder posture;Braun;Arch Phys Med Rehabil,1989
5. Median frequency of the myoelectric signal in cervical paraspinal muscles;Gogia;Arch Phys Med Rehabil,1990