GrOup-based Physical Activity for oLder Adults Trial

The core feature of the program is that it is exclusively for those of a similar age and same gender. Such an environment was reported to provide opportunities for social connectedness, as well as personal comfort. Secondly, exercise class instructors are volunteers- both providing 'similar-models' to enhance efficacy as well as reduce costs associated with instructors. Consistent with social identity and self-categorization perspectives, the program also makes use of a series of strategies to foster intra-group attraction and group identity. For many of the participants a major draw of the program is that it provides opportunities for the older adults to connect with one another after the classes have ended.

The SAMG physical activity condition will mirror the SASG group condition, but will be open to older adults from both genders. The same strategies to those used within the SASG condition will also be utilized (development of a unique program name, T-shirts, opportunities to socialize after the program), and will be offered three days per week (Mon, Wed, Fri, or Tues, Thurs, Sat). Older adults will also be recruited to be instructors for the group classes (= 65 years), with both males and females invited to occupy these instructional roles. (As with the SASG condition, training will take place between September and December 2013, through the respective YMCA centres. The YMCA will oversee the training of these volunteers through their Fitness Leader Training Program).

The third condition utilized within the RCT is designed to reflect 'standard' group based exercises that one sees in typical physical activity centres. Specifically, these classes are not restricted to participants on the basis of age or gender, and as such older adults will be participating in groups comprised of people younger than themselves as well as those of both gender.