these correlation ratios were : arm fatigue when holding the steering wheel ( 0.51 ) , arm fatigue in operating the gearshift lever ( 0.65 ) , arm fatigue from opening and closing the windows ( 0.46 ) , leg fatigue from operating the pedals ( 0.58 ) , and low-back pain during the last two months ( 0.31 ) .
C0023216
leg
C0016504
pedals