Table 1.

Swot analysis of the web-based interventions to promote physical activity by older adults

Strengths	Weaknesses
Evidence for a short term effectiveness	Large amount of senior Internet non-users
Environmentally tailored interventions	Lack of social/interactive elements
Cost-effective interventions	High dropout rates
Seniors’ concerns about their health	Self-reported measures to assess PA
Opportunities	Threats
Create more “senior-friendly” Websites	Uncertain long-term effectiveness
Combine with social/cultural/gaming elements	Fail to reach seniors with low motivation for PA
Standardize theorically-driven Websites	Rise of the digital divide
Use objective measures to assess PA