Hypnotherapy for adherence to nutritional and physical activity recommendations during pregnancy in obese pregnant women: feasibility of an intervention

INTERVENTION: If the woman is randomised in the hypnosis group, she will receive four sessions of hypnotherapy (weeks 16, 18, 20 and 24). She is also given the option to attend two additional hypnotherapy sessions at weeks 27 and 32. Each session is delivered individually, lasting between 30 to 40 min in duration and is provided by one experienced hypnotherapist who reliably mastered all key elements of the intervention after training and observation. The intervention protocol is standardised in a manual for all six sessions. A written script is read to the participants. If the woman is randomised in the control group, she does not receive any hypnotherapy session. CONDITION: Gestational obesity ; Pregnancy and Childbirth PRIMARY OUTCOME: 1. Physical activity level as assessed by the Pregnancy Physical Activity Questionnaire (PPAQ) in the previous month (baseline, 25‐26 weeks of gestation, and 35‐36 weeks of gestation); 2. Total energy intake as assessed by a food frequency questionnaire in the previous month (baseline, 25‐26 weeks of gestation, and 35‐36 weeks of gestation) SECONDARY OUTCOME: 1. Gestational weight gain; 2. Birth weight; 3. Adherence to the programme; 4. Satisfaction with the programme INCLUSION CRITERIA: 1. Pregnant women, aged more than or equal to 18 years, with an intra‐uterine pregnancy of < 15 weeks of gestation 2. Single foetus 3. Body mass index > 29 kg.m‐2 4. Signature of consent form for the study