Although the physical environment as a co-determinant of health could be ap
proached in many ways, we chose to focus on an understudied area: how the i
mmediate Living environment can act as a persuasive force affecting physica
l activity level in older people, with physical activity in turn affecting
health status. To explore this topic, the methods and findings of a literat
ure search are described, the theoretical underpinnings of our thesis are p
resented, and an example is given of how a planned environment, which upon
first glance seems supportive, may have unexpected and negative consequence
s on the activity level, and ultimately the health status, of the residents
. Theory related to changes with aging in homeostatic capacity and reserve
capacity of organ systems as well as Lawton's environmental press-competenc
e model are applied to environmental characteristics (e.g., staircases) of
continuing care retirement communities. We argue that physically challengin
g aspects of the environment, such as stairs, should be included in the des
ign of living spaces for the elderly with the goal of encouraging greater d
aily physical activity and improved health status.