title: VIP in construction: systematic development and evaluation of a multifaceted health programme aiming to improve physical activity levels and dietary patterns among construction workers.
abstract: BACKGROUND
  The prevalence of both overweight and musculoskeletal disorders (MSD) in the construction industry is high. Many interventions in the occupational setting aim at the prevention and reduction of these health problems, but it is still unclear how these programmes should be designed. To determine the effectiveness of interventions on these health outcomes randomised controlled trials (RCTs) are needed. The aim of this study is to systematically develop a tailored intervention for prevention and reduction of overweight and MSD among construction workers and to describe the evaluation study regarding its (cost-)effectiveness.
  
  
  METHODS
  The Intervention Mapping (IM) protocol was applied to develop and implement a tailored programme aimed at the prevention and reduction of overweight and MSD. The (cost-) effectiveness of the intervention programme will be evaluated using an RCT. Furthermore, a process evaluation will be conducted. The research population will consist of blue collar workers of a large construction company in the Netherlands.
  
  
  METHODS
  The intervention programme will be aimed at improving (vigorous) physical activity levels and healthy dietary behaviour and will consist of tailored information, face-to-face and telephone counselling, training instruction (a fitness "card" to be used for exercises), and materials designed for the intervention (overview of the company health promoting facilities, waist circumference measuring tape, pedometer, BMI card, calorie guide, recipes, and knowledge test). MAIN STUDY PARAMETERS/ENDPOINTS: The intervention effect on body weight and waist circumference (primary outcome measures), as well as on lifestyle behaviour, MSD, fitness, CVD risk indicators, and work-related outcomes (i.e. productivity, sick leave) (secondary outcome measures) will be assessed.
  
  
  CONCLUSIONS
  The development of the VIP in construction intervention led to a health programme tailored to the needs of construction workers. This programme, if proven effective, can be directly implemented.
  
  
  BACKGROUND
  Netherlands Trial Register (NTR): NTR2095.
authors.affiliation: Department of Public and Occupational Health and the EMGO+ Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands.
authors.forename: Laura
authors.initials: L
authors.lastname: Viester
authors.forename: Evert A L M
authors.initials: EA
authors.lastname: Verhagen
authors.forename: Karin I
authors.initials: KI
authors.lastname: Proper
authors.forename: Johanna M
authors.initials: JM
authors.lastname: van Dongen
authors.forename: Paulien M
authors.initials: PM
authors.lastname: Bongers
authors.forename: Allard J
authors.initials: AJ
authors.lastname: van der Beek
mesh_terms: D060389:Construction Industry; D003362:Cost-Benefit Analysis; D005247:Feeding Behavior; D017144:Focus Groups; D006293:Health Promotion / Q000191:economics / Q000379:methods / Q000458:organization & administration*; D006801:Humans; D009043:Motor Activity; D009140:Musculoskeletal Diseases / Q000517:prevention & control*; D009784:Occupational Diseases / Q000517:prevention & control*; D050177:Overweight / Q000517:prevention & control*; D016730:Program Development; D015397:Program Evaluation