AIM: To determine the reported effect of randomized controlled trials (RCTs) using Motivational Interviewing (MI) to advance physical activity among older adults. METHODS: We searched for RCTs in Medline, Embase, CINAHL, AgeLine, PsycINFO and Cochrane Library from inception until March, 2019. Identified trials that used MI for improving physical activity in community-dwelling older adults (>= 65 years). RESULTS: From 5,616 citations identified from the search, we included three trials (four publications). There was no evidence of a significant difference between the effect of MI and usual care on physical activity in older adults (standard mean difference (SMD) -0.02, 95% confidence interval (CI) 0.05 to 0.46, I2 = 16%; 3 trials; 84 participants). CONCLUSION: There is insufficient evidence to support the effect of MI on improving physical activity among older adults. There is a need for more high quality trials to show that MI is beneficial in older adults who are physically inactive.
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