Perception and reality - Portuguese adults' awareness of active lifestyle

This study aims to assess awareness of physical activity levels among adults and to investigate the variables associated with different types of awareness. The participants were 1042 men and 1316 women aged 31-60 years old (43.3 ± 6.1). Data were collected on physical activity behaviour, physical activity awareness, perceptions and psychological factors. Awareness was assessed by comparing self-rated physical activity with achieving physical activity guidelines. Chi-square and logistic regression analyses were applied to the results. About 32.4% were considered active. Moreover, 61% accurately reported their physical activity (38.3% realistic inactive and 22.7% realistic active), 29.2% overestimated their physical activity (overestimators) and 9.7% incorrectly described themselves as inactive (underestimators). Perception of an excellent health status (odds ratio, OR = 4.07, 95% confidence interval, CI: 2.07-8.00, p < 0.001) was the strongest positive association with being realistic active, followed by having a high socio-economic status (SES) (OR = 1.53, 95% CI: 1.10-2.12, p < 0.05). Overestimator participants were more likely to have an excellent perception of health (OR = 2.58, 95% CI: 1.47-4.52, p < 0.01) and had a good experience in physical education (OR = 1.46, 95% CI:1.03-2.08, p < 0.05). Almost half of these participants erroneously perceived themselves as physically active. Gender, body mass index (BMI) and the quality of physical education at school were associated with those who misperceived their physical activity.