The effects of coaching on salivary cortisol stress marker in mothers with young children, a randomized controlled trial

Objectives: The purpose of this study was to evaluate the effects of a coaching program on saliva cortisol sensitivity in normal healthy mothers with young children. Methods: A randomized controlled trial (RCT) was conducted with objective and subjective outcome measurements of the stress indicator. A postal survey to assess emotional intelligence (EI) was administered by random sampling to mothers of young children aged 3 months to 6 years in Japan. A total of 74 mothers with median EI scores or lower were enrolled in a RCT involving the coaching program. The intervention group received a 3-month coaching program. The control group was given the coaching program at follow-up. Stress state outcomes (saliva cortisol level, EI score, and Profile of Mood States (POMS)) were measured at baseline and immediate follow-up, with salivary cortisol measured again at a one-month follow-up. Results: Significant differences were found for saliva cortisol level and the EI score within and between the intervention and control groups. Some POMS subscale scores were significantly different within the intervention and control groups. Conclusion: The participants in the coaching program had significantly reduced saliva cortisol levels and better secondary outcomes than those in the control group.