title: Impact of a Worksite Diabetes Prevention Intervention on Diet Quality and Social Cognitive Influences of Health Behavior: A Randomized Controlled Trial.
abstract: OBJECTIVE
  To evaluate the impact of a worksite diabetes prevention intervention on secondary outcomes regarding the change in diet quality and components of the Health Action Process Approach (HAPA) theoretical framework.
  
  
  METHODS
  Pretest-posttest control group design with 3-month follow-up.
  
  
  METHODS
  University worksite.
  
  
  METHODS
  Employees aged 18-65 years with prediabetes (n = 68).
  
  
  METHODS
  A 16-week group-based intervention adapted from the Diabetes Prevention Program.
  
  
  METHODS
  Diet quality was assessed using the Alternative Healthy Eating Index 2010; HAPA components were assessed via written questionnaire.
  
  
  METHODS
  Repeated-measures ANOVA compared the between- and within-group change in outcomes across time.
  
  
  RESULTS
  Significant difference occurred between groups for the change in consumption of nuts/legumes and red/processed meats postintervention and for fruits at 3-month follow-up (all P < .05); a significant increase in total Alternative Healthy Eating Index 2010 score occurred postintervention in the experimental group (P = .002). The changes in action planning, action self-efficacy, and coping self-efficacy from HAPA were significantly different between groups after the intervention; the change in outcome expectancies was significantly different between groups at 3-month follow-up (all P < .05).
  
  
  CONCLUSIONS
  The worksite intervention facilitated improvement in diet quality and in planning and efficacious beliefs regarding diabetes prevention. Further research is needed to evaluate the long-term impact of the intervention.
authors.affiliation: Department of Human Sciences, Human Nutrition, Ohio State University, Columbus, OH. Electronic address: miller.4453@osu.edu.
authors.forename: Carla K
authors.initials: CK
authors.lastname: Miller
authors.affiliation: Department of Human Sciences, Human Nutrition, Ohio State University, Columbus, OH.
authors.forename: Kellie R
authors.initials: KR
authors.lastname: Weinhold
authors.affiliation: College of Public Health, Division of Biostatistics, Ohio State University, Columbus, OH.
authors.forename: Haikady N
authors.initials: HN
authors.lastname: Nagaraja
mesh_terms: D000328:Adult; D003924:Diabetes Mellitus, Type 2 / Q000517:prevention & control*; D004032:Diet / Q000592:standards* / Q000706:statistics & numerical data*; D005260:Female; D015438:Health Behavior; D006293:Health Promotion / Q000379:methods / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D008875:Middle Aged; D020377:Self Efficacy; D011795:Surveys and Questionnaires; D017132:Workplace
keywords: diabetes prevention; diet quality; self-efficacy; type 2 diabetes mellitus; worksite