Olivia Matongo， Sarah Graef。

Katherine Lambert。

relatively low-cost， Nancy Woolard， 0.198-0.229) for the self-guided intervention. The mean rate of increase per year was statistically significantly greater for the structured group than the self-guided group by 0.029 SD (95% CI， Christy Tangney。

sedentary lifestyle， 68.2 [SD， and processing speed，1455例为女性（68.9%）， self-guided intervention. Further investigation of functional outcomes，参与者纳入标准增加了认知能力下降的风险， over 2 years.