摘要：The object of this study was to study isokinetic strength of shoulder muscles, elucidating especially difference between dominant and nondominant limbs, the effect of speed of movement, relative strength between mutually antagonistic muscle groups, and relation to body weight. Seventeen healthy men and sixteen healthy women, all between 20 and 35 years of age, performed isokinetic shoulder internal rotation, external rotation, extension, flexion, adduction, and abduction at both 60 degrees per second and 180 degrees per second.At the faster speed, the men showed greater strength in their dominant limbs than in their nondominant limbs for each of the six movements tested. The women exhibited a similar difference for all of the movements except abduction. Interestingly, the men demonstrated greater strength in their dominant libms at the faster speed than they did at the slower speed. At the slower speed, external rotators and flexors produced about 70 per cent of the peak torque of their respective antagonists, but abductors could generate only 60 per cent of the peak torqueof the adductors. At the faster speed, these percentages decreased further. Body weight and muscle strength showed no significant relationship in the men. This information may be of use to clinicians using isokinetic dynamometers to examine function in the shoulder.
关键词：muscle strength; shoulder; tests and measurements
