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Effects of resistance training exercise on cognitive performance in elderly individuals with memory impairment: results of a controlled trial
Busse AL, Filho WJ, Magaldi RM, Coelho VA, Melo AC, Betoni RA, Santarem JM
Einstein 2008 Oct-Dec;6(4):402-407
clinical trial
6/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

OBJECTIVE: To detect the effects of a resistance training program on cognitive performance and muscle strength in sedentary elderly individuals with memory impairment. METHODS: Thirty-one sedentary elderly persons with no dementia or depression were randomly distributed into two groups: physical activity group and control group. The resistance training exercise program lasted nine months and consisted of three series of six exercises per session, carried out on lever-type equipment for approximately one hour, twice a week. Every three months, both groups were submitted to the following cognitive tests: Rivermead Behavioral Memory Test (RBMT), Wechsler Adult Intelligence Scale (WAIS) Direct and Indirect Digit Span, Memory Complaints Scale, and Cambridge Cognitive Test (CAMCOG). RESULTS: After nine months, the group that did resistance exercises showed a significant increase in the standardized RBMT score (p = 0.021) and in muscle strength (p < 0.001), with no significant difference in the other parameters evaluated. CONCLUSIONS: These results indicate that supervised resistance exercises can improve memory performance in sedentary elderly individuals with prior memory compromise, besides increasing muscle strength.

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