Figure 3
From: Evidence to support the mechanical advantage hypothesis of grasping at low force levels
Average Normal forces of the individual fingers and thumb in different conditions. Little finger normal force (represented in light shaded gray) of high force level grasp condition was statistically equivalent to the ring finger normal force (represented in medium shaded gray) of the same condition. In contrast, during low force level grasp condition, little finger normal force (represented in light shaded gray) was statistically greater (p < 0.001) than the ring finger normal force (represented in medium shaded gray). During high force level grasp condition, the average thumb normal force (mean = 13.89 N, SD = 0.07) produced by the participants was statistically greater (p < 0.001) than the average thumb normal force (mean = 7.28 N, SD = 0.09) produced during low force level grasp condition.
