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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: Ergonomics. 2013 Oct 17;56(12):10.1080/00140139.2013.847212. doi: 10.1080/00140139.2013.847212

Figure 6. Grip Force Magnitude and Directional Variations with Handle Diameter.

Figure 6

Grip force magnitude decreased with increase in handle diameter (p<0.05) except when comparing force magnitudes for handle 1 and handle 2, and handle 1 and handle 3. Grip force vector direction decreased with increase in handle diameter (p<0.05) except when comparing force directions for handle 2 and handle 3. A decrease in force vector direction corresponds to clockwise rotation in force vector toward the thumb-tip (Fig. 5).