Abstract
Using a three-dimensional motion analyzer-comprising system, forearm alternate movement was halved as 2 parameters of pronation and supination components to examine comparatively maximum angles of both these components.
The subjects were 90 healthy normal persons averaging 32 years old (51 males, 39 females). These subjects were made to take forearm alternate movement as quickly as possible for 5 seconds simultaneously right and left.
The results were as follows;
1) Mean values on pronation were significantly high (p<0.01) on both right and left sides compared with those on supination.
2) Coefficients of variation on supination were significantly high (p<0.01) on both right and left sides compared with those on pronation.
3) In the right and left comparison, mean values on right pronation were significantly high (p<0.05) compared with those on left pronation.
As described above, a comparative examination of pronation and supination components was thought indispensable for quantitative evaluation of forearm alternate movement.
