Keyboard Posture (Serina et al., 1999)
Tested wrist and arm postures of 25 Ss (23 women) typing at a computer keyboard arranged according to the ANSI-HFS 100 standard.
76% of left hand movements and 73% of right hand F/E movements were >15ƒ.
20% of left hand and 41% of right hand R/U movements were >20ƒ.