text_1: Individuals with Alzheimers who participate in six months of physical activity improve cognitive function for up to 18 months.
text_2: At 18 months, participants in the intervention group improved 0.73 points (95% confidence interval, -1.27 to 0.03) on the ADAS-Cog, and those in the usual care group improved 0.04 points (95% confidence interval, -0.46 to 0.88).