Purpose

While on gross inspection, the human body appears anatomically symmetric, asymmetry is a basic organizing principle of the human nervous system (Gazzaniga, 1989). Anatomical asymmetries in the hands (HardyckPetrinovich, 1977), feet (Brown & Taylor, 1988), eyes (Bourassa, McManus, & Bryden, 1996; HebbalMysorekar, 2003) and ears (HebbalMysorekar, 2003; Jung & Jung, 2003) are generally small. However, functional asymmetries in the nervous system can result in substantial behavioral asymmetries. This left and right side asymmetry is called “laterality” and as it is stated above can be found in each body part with bilateral symmetry in humans (Kubota & Demura, 2011). This laterality can be also seen maximal arm isometric strength between left and right arms in sedentary subjects (Aoki & Demura, 2008; Kubota & Demura, 2011), tennis and baseball players (Miura, Tomosue, & Ikegawa, 1994), and volleyball players (ÖnderEler, 2008). Even though this maximal strength laterality was found in tennis, baseball, and volleyball players, these sports predominantly require using dominant arm. Thus, the aim of this study was to investigate the effect of laterality on handgrip strength in right-handed male armwrestlers computed with both arms.