The role of positive affect in asthma control and symptom severity in adolescents

Introduction: We test the effects of positive affect and its arousal subscale components of calm, wellbeing, and vigor on asthma control and symptom severity in adolescents with moderate to severe asthma. Additionally, we test whether positive affect (and its arousal components) moderate how stress impacts asthma control and symptom severity. Methods: Adolescents with asthma (N = 66, ages 12–17) completed brief surveys 4 times a day for 7 days reporting on their positive affect, stress, and asthma symptom severity and conducted a morning peak expiratory flow assessment each day. Asthma control and psychological asthma triggers were assessed at the end of the 7 days. Results: Positive affect moderated the association between stress and asthma control (b = −0.33, p = 0.009) as well as the association between psychological triggers and asthma control (b = −0.74, p = 0.007). When assessing the positive affect arousal components, calm and wellbeing seemed to be driving these effects. Additionally, calm moderated the association between stress and asthma symptom severity (b = −0.33, p = 0.036) as well as the association between psychological triggers and asthma symptom severity (b = −0.75, p = 0.021). Conclusions: When considering patient stress (e.g., general stress, psychological asthma triggers), positive affect and its arousal components of calm and wellbeing may be helpful for patients with higher levels of stress and/or for patients experiencing greater numbers of psychological triggers.