Associations of awareness of physical activity recommendations for health and self-reported physical activity behaviours among adult South Australians

Objectives Despite widespread media campaigns to encourage physical activity (PA), participation is poor among Australian adults. This study aimed to explore the prevalence of and relationships between awareness of PA recommendations and PA participation. Design Cross-sectional study of n = 2402 South Australian adults (aged ≥ 18 years) via a computer-assisted telephone interview. Methods PA recommendation awareness was determined by asking for the number of minutes of PA recommended for health benefits and whether PA is needed to make you ‘puff and pant’ to confer a health benefit. Respondents were defined as sufficiently active if they reported ≥150 min/week of PA as measured by the Active Australia Survey. Results A total of 43.0% correctly identified that 30 min of PA is recommended per day (Recommendation 1) and 43.3% correctly disagreed/strongly disagreed that PA is needed to make you ‘puff and pant’ (Recommendation 2). Overall, 60.6% of respondents were sufficiently active. Of those who correctly identified Recommendation 1, 53.2% reported participating in sufficient PA, significantly fewer than those who did not know Recommendation 1 (69.6%) (χ² = 64.74 (4), p < 0.001). There was no difference in levels of sufficient PA between those who correctly identified Recommendation 2 and those who did not. Conclusions There was relatively low awareness of PA recommendations among South Australian adults. More research is needed in how recommendations are promoted and how they impact PA behaviours. PA recommendations are based on the best available epidemiological evidence but largely fail to guide the choices people currently make about PA.