As discussed earlier, controlled randomized trials of exercise programs for community-residing individuals with cognitive impairment are lacking, although such programs appear promising to decrease disability and improve mood, physical functioning, and QOL of these individuals. We are currently conducting 2 randomized clinical trials of interventions that include exercise as a major component: one for individuals with AD and sleep disturbance who live at home with a family member (Nighttime Insomnia Treatment and Education for Alzheimer's Disease, NITE-AD), and other for individuals with mild cognitive impairment who reside in retirement homes (most of whom live alone).