This feasibility study involves the development, implementation and initial testing of a behavior
change intervention in a naturalistic setting. A small-scale randomized controlled trial (RCT) will investigate the
implementation of a goal-setting intervention aimed at promoting behavior change in the domains of physical and
cognitive activity in the context of a community resource center for over-50s. Healthy older participants attending
the center (n= 75) will be randomized to one of three conditions: control (an interview involving a general
discussion about the center); goal-setting (an interview involving identification of up to five personal goals in the
domains of physical activity, cognitive activity, diet and health, and social engagement); or goal-setting with
mentoring (the goal-setting interview followed by bi-monthly telephone mentoring). All participants will be
reassessed after 12 months. Primary outcomes are levels of physical and cognitive activity. Secondary outcomes
address psychosocial (self-efficacy, mood, quality of life), cognitive (memory and executive function), and physical
fitness (functional and metabolic) domains. Cost-effectiveness will also be examined.