IRCT20170606034339N2 IRCT 2020-09-08 Mashhad University of Medical Sciences The effect of education on weight changes and lifestyle self-efficacy of women in the postpartum period Investigating the effect of nutrition training and physical activity on weight changes and Self-efficacy of Weight Lifestyle for Women with High Body Mass Index in Postpartum Period 2020-06-21 anticipated 64 Complete https://irct.ir/trial/50414 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Randomization description: Simple randomization is done by lottery, Blinding description: Among the health centers under the auspices of the university, one center is randomly selected as the intervention group using a lottery, and the nearest center in terms of distance and similarity in terms of socio-economic context is considered as the control group. The reason for choosing a separate intervention and control center to prevent the dissemination of information between the two groups. In this way, the participants do not know whether they are in the intervention or control group. N/A Overweight and Obesity after childbirth. Intervention 1: Intervention group: In the intervention group, in addition to the standard care available in health centers, nutrition education with emphasis on four sources of self-efficacy and physical activity with pedometer by the researcher in groups of 5-7 people through lectures, group discussions and questions and answers. It is done in 4 sessions (45-60) minutes with an interval of one week. At the end of the training sessions, a healthy lifestyle booklet with the content of healthy nutrition and physical activity after childbirth will be given to mothers. Intervention 2: Control group: The control group will receive the standard care available in the health centers. Yes - There is a plan to make this available What will be shared: All data will be published after the individuals are unidentified When: Immediately after completing the plan To whom: All the researchers Conditions: People working in health centers Where to obtain: Hoda Naderi How to obtain: Initially, an application is submitted via email, then after the email is read, if possible, the data will be provid Comments: