A Controlled Pre-Post Analysis Investigating The Effect of Mindfulness On Perceived Stress and Cortisol Levels and Exam Performance in Medical Students
Abstract Background. Medical students demonstrate higher levels of psychological distress compared with the general population and other student groups. Mindfulness interventions show promise in stress reduction for this group, and in the reduction of cortisol, an established clinical marker of the body’s stress response. This study investigated the relationship of mindfulness to perceived stress, salivary cortisol and assessment performance in undergraduate medical students in response to stressful and non-stressful events. Methods. A controlled pre-post analysis design with within-groups comparisons. 67 medical students completed the Five Facet Mindfulness Questionnaire (FFMQ) and provided perceived stress ratings and saliva samples, from which cortisol was extracted, during group work (control/baseline) and immediately prior to end of year 2 examinations (experimental). Academic performance data was extracted for comparison with measures. Results. Salivary cortisol and perceived stress were significantly increased prior to examinations. The change in cortisol levels from baseline (non-stressful, group work conditions) to experimental (stressful, pre-exam conditions) showed a significant negative correlation with exam performance. FFMQ score showed a significant positive correlation with exam performance and a significant negative correlation with salivary cortisol concentration. Conclusions. This study suggests that there exists an important relationship between mindfulness and biomarkers of stress, which may manifest into improved assessment outcomes potentially through healthier, more adaptive coping and stress management strategies. A novel strength of the present study is the identification of individual facets of mindfulness associated with stress and exam performance (acting with awareness and non-judging) suggesting that these may be important targets for improving medical students’ stress management and exam performance.