Effectiveness of Community Intervention in Improving Bone Health Behaviors in Older Adults

Karen Plawecki, Karen Chapman-Novakofski

Research output: Contribution to journalArticlepeer-review


An 8-week, bone-health community program addressed risks/lifestyle changes within the Health Belief Model and Theory of Reasoned Action frameworks in a randomized format (treatment group n = 35; control group n = 34). Median week 1 values for calcium (control, 963 mg; treatment, 1023 mg) and vitamin D (81 IU both groups) were below recommendations, increasing throughout the program for both control (1023 mg calcium, 128 IU vitamin D) and treatment (1005 mg calcium, 122 IU vitamin D) groups. There was limited response to the exercise outcome variables, with many not participating in that section of the program. Psychosocial variables were positive for both control and treatment groups at week 1, with no significant difference at postintervention. Regression analysis indicated that those with a positive attitude about calcium intake and belief that they could choose calcium-fortified foods were more likely to have higher calcium intake. Intention to exercise was modified by peer and family support. Community-based programs can translate and use clinical trial key topics and outcomes, but participation bias makes impact results difficult to interpret the effectiveness of the program.

Original languageEnglish (US)
Pages (from-to)145-160
Number of pages16
JournalJournal of Nutrition in Gerontology and Geriatrics
Issue number2
StatePublished - Apr 1 2013


  • Health Belief Model
  • bone health
  • calcium
  • osteoporosis
  • theory of reasoned action
  • vitamin D

ASJC Scopus subject areas

  • Nutrition and Dietetics
  • Geriatrics and Gerontology


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