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BACKGROUND	Physical rehabilitation is commonly used in patients with Parkinson 's disease ( PD ) to improve their health and alleviate the symptoms .
OBJECTIVE	We compared the effects of three programs , strength training ( ST ) , aerobic training ( AT ) , and physiotherapy , on motor symptoms , functional capacity , and electroencephalographic ( EEG ) activity in PD patients .
METHODS	Twenty-two patients were recruited and randomized into three groups : AT ( 70 % of maximum heart rate ) , ST ( 80 % of one repetition maximum ) , and physiotherapy ( in groups ) .
METHODS	Subjects participated in their respective interventions twice a week for 12 weeks .
METHODS	The assessments included measures of disease symptoms ( Unified Parkinson 's Disease Rating Scale [ UPDRS ] ) , functional capacity ( Senior Fitness Test ) , and EEG before and after 12 weeks of intervention .
RESULTS	The PD motor symptoms ( UPDRS-III ) in the group of patients who performed ST and AT improved by 27.5 % ( effect size [ ES ] = 1.25 , confidence interval [ CI ] = -0.11 , 2.25 ) and 35 % ( ES = 1.34 , CI = -0.16 , 2.58 ) , respectively , in contrast to the physiotherapy group , which showed a 2.9 % improvement ( ES = 0.07 , CI = -0.85 , 0.99 ) .
RESULTS	Furthermore , the functional capacity of all three groups improved after the intervention .
RESULTS	The mean frequency of the EEG analysis mainly showed the effect of the interventions on the groups ( F = 11.50 , P = 0.0001 ) .
CONCLUSIONS	ST and AT in patients with PD are associated with improved outcomes in disease symptoms and functional capacity .

