1. Isometric muscle strength of adult men and women;Asmussen;Communications from the Danish National Association for Infantile Paralysis,1961
2. Low back trouble in a general population of 30-, 40-, 50-, and 60-year-old men and women. Study design, representativeness and basic results;Biering-Sørensen;Danish Medical Bulletin,1982
3. Physical measurements as risk indicators for low back trouble during a one-year period;Biering-Sørensen;Spine,1984
4. Psychophysical bases of perceived exertion;Borg;Medicine and Science in Sports and Exercise,1982
5. Blood pressure, heart rate and EMG in low level static contractions;Fallentin;Acta Physiologica Scandinavica,1985