Objectives. The purpose of the current study was to prospectively test the utility of a social
cognitive theory (SCT) model of physical activity behavior over an 18-month period in middle …

Background Despite the documented benefits of physical activity, many adults do not obtain
the recommended amounts. Barriers to physical activity occur at multiple levels, including at …

Policies targeting the built environment to increase physical activity may be ineffective
without considering personal social networks. Physical activity and social network data …

Background Socioecological models highlight the potential direct and indirect effects of
multiple levels of influence in explaining physical activity (PA). Social cognitive theories …

Background: Social ecological models suggest that conditions in the social and physical
environment, in addition to individual factors, play important roles in health behavior change …

BACKGROUND: Older adults appear to have different activity preferences (prefer to be
active alone or with others, or show no preference). As the activity of older females is often …

Some attributes of neighborhood environments are associated with physical activity among
older adults. This study examined whether the associations were moderated by driving …

Background National recommendations supporting the promotion of multiple short (10+
minute) physical activity bouts each day to increase overall physical activity levels in middle …

This study examined associations between neighborhood social factors and physical activity
(PA) and sedentary behavior (SB) in older adults. Furthermore, possible moderating effects …

Background In spite of consistent evidence to suggest that being more physically active is
associated with enhanced quality of life (QOL), there have been remarkably few attempts to …