Purpose This study was performed to identify the effects of muscle strengthening program of lower extremity for 8 weeks on the balancing and gait in stroke patients to provide the effectiveness of therapeutic interventions and understandings of stroke patients. Methods The subjects were 14 patients who were diagnosed hemiplegia from stroke in over past 6 months. 14 subjects were randomized into 7 control group and 7 study group. The subjects in the study group received not only physical therapy but also muscle strengthening program of lower extremity for 8 weeks. However, no additional intervention was applied to the subjects in the control group. FRT, BBS, TUG, and 6MWT was performed before and after the intervention for comparison. Results Significant difference was observed in FRT in the study group. The range of arm extension increased from 12.8 to 19.4 in the study group(p=.018, p 0.05) which was significant. Second, the scores in BBS showed increase in the study group but without significance(p=.727, p 0.05). Third, there were changes in the time of completion for TUG test. The time in the study group decreased from 44.3 sec to 39.5 sec(p=.064, p 0.05) and the one in the control group increased from 27.8 sec to 28.8 sec(p=.761, p 0.05). Forth, both groups showed decrease in the completion distance before and after the intervention in 6MWT. Lastly, there was substantial amount of positive correlated(p 0.01) between BBS and FRT which were to evaluate the balance among the tests of FRT, BBS,

TUG, and 6MWT. Conclusion The muscle strengthening program of lower extremity for 8 weeks appears to show

positive effects in the enhancement of balancing ability. Also, we could understand that the enhancement of balancing ability has correlated to the enhancement of gait as well. Based on these results, it is considered that the complex approach in the therapeutic intervention for the stroke patients including the muscle strengthening program of lower extremity will help the effective recovery of balancing and gait of stroke patients.