a: Split cylinder grip strength as a function of Jamar grip strength for handle diameters (D) of 45, 58, and 83 mm (Study 2 (Seo et al., 2007); Jamar setting = 2). b: Normal force as a function of split cylinder grip strength (Study 1 and 2 pooled (Seo et al., 2006, 2007); split cylinder force gauge parallel to the forearm only). c: Split cylinder grip strength and normal force as a function of the ratio of handle diameter to hand length (D/L) (Study 1 and 2 pooled (Seo et al., 2006, 2007); split cylinder force gauge parallel to the forearm only).