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E-ISSN : 2148-9696
Crescent Journal of
Medical and Biological Sciences
Jan 2020, Vol 7, Issue 1
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Original Article
The Effect of Motivational Interviewing on Dietary Intake and Weight Changes among Preconception Women with Overweight and Obesity: A Randomized Controlled Trial
Samar Azami1, Roghaiyeh Nourizadeh2, Esmat Mehrabi2, Hamid Poursharifi3, AzizehFarshbaf- Khalili4
1Student Research Committee, Department of Midwifery, Faculty of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran
2Department of Midwifery, Faculty of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran
3Department of Clinical Psychology, University of Social Walfare and Rehabilitation Sciences, Tehran, Iran
4Aging Research Institute, Physical medicine and rehabilitation Research Centre, Tabriz University of Medical Sciences, Tabriz, Iran

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Keywords : Dietary intake, Motivational interviewing, Preconception, Overweight, Obesity
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Objectives :The present study was conducted to investigate the effect of motivational interviewing on dietary intake and weight changes among preconception women with obesity and overweight.

Materials and Methods: This randomized controlled trial was conducted on 70 overweight & obese women (body mass index≥25), aged 18-35 years in preconception period who referred to health centers in Tabriz, Iran. Twenty-four hr. food record was completed by women for 3 days and participants’ weights were measured before and 8 weeks after intervention.  Using random blocking and the allocation ratio of 1:1, the participants were divided into two groups of motivational interviewing (6 sessions of training and motivational interviewing) and control (routine preconception care). The criterion for primary outcome was the mean macro nutrient intake 8 weeks after the intervention. All analyses were done according to intention to treat.

Results: At the baseline, there was no statistically significant difference in terms of mean of daily energy intake, carbohydrates, fat, protein and weight (p˃0.05).  After the intervention, the mean (SD: standard deviation) of daily energy intake in the intervention group was 1841.3 (567.8 kcal) that was significantly lower than the control group, 2131.0 (568.7 kcal) [Adjusted Mean Difference (AMD): -334.3; %95 CI: -667.2 to -21.5; P=0.03]. However, there was no difference between two groups in terms of macro nutrients (p˃0.05). After the intervention, the mean (SD) of participants’ weight in the intervention group was 74.4 (6.94 kg) that was significantly lower than the control group ,75.7 (7.82 kg) [AMD:-1.30 kg; 95%CI:-2.09 to-0.51; P=0.002].

Conclusions:Motivational interviewing is an efficient method of weight loss and energy intake change can help preconception women with obesity or overweight to safeguard themselves against adverse consequences of their pregnancy.


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