Cross-sectional associations between 24-h movement guideline adherence and suicidal thoughts among Canadian post-secondary students

Suicide is one of the leading causes of death among post-secondary students. It is, therefore, imperative that we identify behavioral risk factors that can have protective effects in preventing against suicide. This study examined whether different combinations of adherence to the Canadian 24-Hour Movement Guidelines for Adults (i.e., physical activity, sedentary behavior, sleep) were associated with reduced odds of suicidal ideation and planning among emerging adults attending post-secondary education. This cross-sectional observational study used data from the first cycle of the Canadian Campus Wellbeing Survey, which included a total of 17,633 students (Mean age = 21.7 ± 2.92 years; 67.1% female, 31.5% male, 1.4% other) enrolled in 20 Canadian post-secondary institutions. Logistic regression models with covariate balanced propensity score weighting were computed. Suicidal ideation and suicidal planning were reported by 14.4% and 4.9% of students, respectively. Adherence to the sleep (OR = 0.71; 95% CI: 0.58–0.86), physical activity and sleep (OR = 0.74; 95% CI: 0.62–0.88), sedentary behavior and sleep guidelines (OR = 0.64; 95% CI: 0.45–0.90) as well as concurrent adherence to all three guidelines (OR = 0.58; 95% CI: 0.44–0.75) were associated with significantly reduced odds of suicidal ideation. Among students who reported suicidal ideation, only adherence to the physical activity and sleep guidelines (OR = 0.67; 95% CI: 0.48–0.96) was associated with suicidal planning. Collectively, findings suggest the promotion of healthy movement behavior patterns may be a promising avenue for broad suicide and mental health prevention efforts on campus, although the potency of these effects may not extend to more severe suicidal thoughts.