Psychosocial factors have been identified as important predictors of onset, course and persistence of low back pain (LBP) in the general population. To identify factors associated with attitudes/beliefs in older adults with LBP throughout a 12-month follow-up. A longitudinal investigation was conducted with 500 participants aged ≥60 years reporting a new (acute) episode of nonspecific LBP. Data were obtained at baseline, 6-week, 3-, 6-, 9-, and 12-month interviews. The study variables were: [dependent] LBP-related attitudes/beliefs that were assessed by the Back Beliefs Questionnaire (BBQ); [independent] age; sex; LBP intensity 'at-the-present-time' of interview and 'over-the-past-week' before interview; LBP frequency; LBP-related treatments; disability; mobility; depressive symptoms; self-perceived recovery; expectation of pain improvement; and expectation for returning to activities. Data were analysed by multiple linear regression analysis. At baseline, 85.7% of the participants were female, had mean age of 69.0 (6.3) years, mean BBQ score of 24.5 (6.5), and 79.6% reported pain complaints after an acute episode of LBP. After 12 months, participants maintained a mean BBQ score of 24.6 (6.6) and 63.3% still reported pain complaints after an acute episode of LBP at baseline. Multivariate analysis showed that disability, advancing age, poor expectation of pain improvement in 3 months, and mobility decline were significantly associated with worse BBQ scores during all follow-ups. Ageing, hopelessness, and physical and functional impairment impact pain-related behaviours among older patients seeking healthcare due to acute LBP complaints. Their screening may assist in strategies to manage symptoms and prevent the persistence of pain.