Purpose:
Psychological well-being and health are closely linked at older ages. It is widely recognized that adapted regular physical exercise improves drastically both the physical and emotional well-being and allows older adults to stay healthy longer, with a better quality of life. In the framework of a European project (MOTION) to increase the life expectancy, independence and quality of life of older adults, the aim of the current research was to develop and validate a brief, multi-faceted, self-report measure of well-being in older adults.

Method:
The aim of Study 1 was to establish the factor structure of the newly developed measure using Exploratory Factor Analysis (EFA). The aim of Study 2 was to replicate the measure's factor structure using Confirmatory Factor Analysis (CFA), and to evaluate test-retest reliability and convergent validity.

Results:
Analyses allowed generating a model of well-being comprising four dimensions: Perceived physical value, self-esteem and self-efficacy, socialization, and emotional reactions.

Conclusion:
The findings suggest that the SMWQ is appropriate for use with older adults and can help researchers and health professionals to assess the effects of APA programs.