Purposes: Document the effects of mental practice (MP) when added to PNF on the strength of arm muscles and handgrip in healthy individuals. Materials and Methods: 30 female students were randomly assigned to the PNF group and PNFMP group. The mean age of PNF group = 18.53 ± 6.4 years, and BMI = 20.49 ± 3.42 kg/m2. The age of PNFMP group = 19.27 ± 1.49 years, and BMI= 19.13 ± 1.96 kg/m2. The training program has administered for five weeks with 3 x 30 min training sessions/week, with regular intervals of assessment. Electrical muscle activities of arm and handgrip force were examined by EMG and handheld dynamometer. Results: MANOVA revealed an improvement in muscle performance of the PNFMP group by, F= 6.2, p = <0.019, and F= 5.9, p = <0.022 for infraspinatus and anterior deltoid muscles respectively, for biceps brachii by F=4.9, p = <0.035, and F=4.8, p = <0.037, and brachioradialis muscle. Scores of handgrip force were higher by F= 5.3, p =0.03. Conclusion: This study confirmed the use of MP combined with PNF in healthy subjects, and it will be beneficial for neurological and orthopedic cases.
