Does the Handmaster Plus improve grip strength?
Handmaster Plus provides a hand exercise that increases grip strength maximally as it strengthens all 18 of the hand muscles (9 close the hand, 9 open). University of Pittsburgh researcher, Zong-Ming Li, determined that maximum grip strength occurs in 35ยบ of wrist extension, illustrating the important connection between extensor muscle strength and grip strength. Most hand exercise products resist only the 9 closing (flexor) muscles. http://www.pitt.edu/~msrc/publications/2002/li_69.
