title: Come On! Using intervention mapping to help healthy pregnant women achieve healthy weight gain.
abstract: OBJECTIVE
  Gaining too much or too little weight in pregnancy (according to Institute of Medicine (IOM) guidelines) negatively affects both mother and child, but many women find it difficult to manage their gestational weight gain (GWG). Here we describe the use of the intervention mapping protocol to design 'Come On!', an intervention to promote adequate GWG among healthy pregnant women.
  
  
  METHODS
  We used the six steps of intervention mapping: (i) needs assessment; (ii) formulation of change objectives; (iii) selection of theory-based methods and practical strategies; (iv) development of the intervention programme; (v) development of an adoption and implementation plan; and (vi) development of an evaluation plan. A consortium of users and related professionals guided the process of development.
  
  
  RESULTS
  As a result of the needs assessment, two goals for the intervention were formulated: (i) helping healthy pregnant women to stay within the IOM guidelines for GWG; and (ii) getting midwives to adequately support the efforts of healthy pregnant women to gain weight within the IOM guidelines. To reach these goals, change objectives and determinants influencing the change objectives were formulated. Theories used were the Transtheoretical Model, Social Cognitive Theory and the Elaboration Likelihood Model. Practical strategies to use the theories were the foundation for the development of 'Come On!', a comprehensive programme that included a tailored Internet programme for pregnant women, training for midwives, an information card for midwives, and a scheduled discussion between the midwife and the pregnant woman during pregnancy. The programme was pre-tested and evaluated in an effect study.
authors.affiliation: 1Research Centre for Midwifery Science,Universiteitsingel 60,6229 ER Maastricht-Zuyd,The Netherlands.
authors.forename: Astrid
authors.identifier: http://orcid.org/0000-0003-2527-6268
authors.initials: A
authors.lastname: Merkx
authors.affiliation: 1Research Centre for Midwifery Science,Universiteitsingel 60,6229 ER Maastricht-Zuyd,The Netherlands.
authors.forename: Marlein
authors.initials: M
authors.lastname: Ausems
authors.affiliation: 1Research Centre for Midwifery Science,Universiteitsingel 60,6229 ER Maastricht-Zuyd,The Netherlands.
authors.forename: Raymond
authors.initials: R
authors.lastname: de Vries
authors.affiliation: 1Research Centre for Midwifery Science,Universiteitsingel 60,6229 ER Maastricht-Zuyd,The Netherlands.
authors.forename: Marianne J
authors.initials: MJ
authors.lastname: Nieuwenhuijze
mesh_terms: D000328:Adult; D015992:Body Mass Index; D004032:Diet; D005260:Female; D005865:Gestational Age; D017408:Guidelines as Topic; D015438:Health Behavior; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D016013:Likelihood Functions; D008297:Male; D008880:Midwifery; D015969:National Academies of Science, Engineering, and Medicine, U.S., Health and Medicine Division; D011247:Pregnancy; D037841:Pregnant People; D014481:United States; D015430:Weight Gain
keywords: Gestational weight gain; Goal setting; Intervention development; Nutritional advice; Promoting healthy pregnancy