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Effect of positive emotion intervention during late pregnancy on improving colostrum secretion: a randomised control trial protocol.

School of Public Health, and Department of Geriatrics of the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China. Clinical Laboratory Center, Wuyi First People's Hospital, Wuyi, China. School of Health Policy and Management, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. Department of Obstetrics, Women's Hospital School of Medicine Zhejiang University, Hangzhou, Zhejiang, China. Department of Gynecology, Wuyi First People's Hospital, Jinhua, Zhejiang, China. Department of Science and Education, Wuyi First People's Hospital, Jinhua, China. School of Public Health, and Department of Geriatrics of the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China chianyoung@zju.edu.cn. Community and Environmental Health, Old Dominion University, Norfolk, Virginia, USA.

BMJ open. 2023;(6):e066601
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Abstract

INTRODUCTION Though evidence has revealed the beneficial effects of cognitive improvement interventions on breastfeeding, the effect of psychological interventions has rarely been studied. This study aims to test whether promoting a positive emotion intervention, 'Three Good Things' intervention, during the last trimester of pregnancy can enhance early colostrum secretion and breastfeeding behaviours by modulating the hormones associated with lactation (prolactin and insulin-like growth factor I). We will attempt to promote exclusive breastfeeding by using physiological behavioural measures. METHODS AND ANALYSIS This study is designed as a randomised controlled trial conducted in the Women's Hospital School of Medicine at Zhejiang University and the Wuyi First People's Hospital. The participants will be randomly divided into two groups using stratified random grouping: the intervention group will receive 'Three Good Things' intervention, while the control group will write about three things that come to mind first. These interventions will be continued from enrolment until the day of delivery. Maternal blood hormone levels will be tested approaching delivery and the following day after birth. Behavioural information about breastfeeding will be collected 1 week afterwards. ETHICS AND DISSEMINATION The study has been approved by the Ethics Committees of the Women's Hospital School of Medicine at Zhejiang University and the Wuyi First People's Hospital. Results will be disseminated through peer-reviewed journals or international academic conferences. TRIAL REGISTRATION NUMBER ChiCTR2000038849.