Tendency to avoid physical activity mediates the association between perceived weight stigma and physical activity levels among university students; Perceived weight stigma and physical activity avoidance

Background and aims: The World Health Organization recently announced an action plan to increase global physical activity (PA) levels due to individuals' increasingly inactive lifestyle. Perceived weight stigma (PWS) is a psychosocial factor that may reduce individuals’ PA, and PA avoidance may be involved in this association. Therefore, the present study conducted a cross-sectional survey to investigate the mediating effect of tendency to avoid PA in the association between PWS and PA among Chinese university physical education (PE) students and non-PE students. Methods: Responses from non-PE (n = 2877) and PE (n = 2286) students were collected via an online survey comprising the Perceived Weight Stigma Scale, Tendency to Avoid Physical Activity and Sport Scale, and International Physical Activity Questionnaire Short Form. Results: Results of moderated atemporal mediation analysis showed a significant association between PWS and PA mediated by tendency to avoid PA among the two groups (B[SE] = 0.94[0.08], p < .001). In addition, compared to non-PE students, PE students were significantly less affected by tendency to avoid PA (B[SE] = -2.61[0.29], p < .001). However, when affected, PE students showed a larger reduction in moderate PA levels than non-PE students (B[SE] = −9.14[4.51], p = .043). Conclusion: The present study's findings showed that PWS negatively affected PA via the atemporal mediation of tendency to avoid PA among university PE and non-PE students. Additionally, compared to non-PE students, PE students showed a larger reduction in moderate PA levels when affected by the tendency to avoid PA. Strategies aimed at reducing weight stigma or promoting PA enjoyment could be adopted to facilitate PA engagement and maintain a physically active lifestyle.