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Goal Setting and Decisional Balance Applied to Physical Activity and Fruit & Vegetable Consumption

55 Years
85 Years
Not Enrolling
Physical Activity, Diet

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Trial Information

Goal Setting and Decisional Balance Applied to Physical Activity and Fruit & Vegetable Consumption

Goal setting has become an integral part of physical activity and dietary interventions;
however, few studies have examined the theoretical constructs that drive goal-setting
theory. To address the limitations and gaps in the literature, we designed an 8-week health
behavior intervention for a racially and ethnically diverse sample of older adults. The
primary aim of this study was to determine whether older adults randomized to a goal-setting
intervention for physical activity or fruit and vegetable (F&V) intake would make
significant improvements in physical activity or F&V intake. The secondary aim of this study
was to determine whether participating in goal-setting interventions was associated with
changes in theoretical constructs related to goal-setting. We hypothesized that older adults
assigned to the physical activity condition would significantly increase metabolic minutes
(MET-minutes) of physical activity from baseline to follow-up and that participants assigned
to the F&V intake condition would significantly increase mean servings of F&V. In addition,
we hypothesized that mean scores of goal specificity, difficulty, effort, commitment,
persistence, barrier self-efficacy, and task self-efficacy would significantly increase from
baseline to follow-up for both groups.

Inclusion Criteria:

- must be 55 years or older,

- posses a telephone,

- able to give informed consent, and

- commit to a 10 week study.

Exclusion Criteria:

- currently enrolled in a study promoting physical activity or dietary intake,

- currently exceeding current recommendations for physical activity or F&V intake at
baseline, and

- medical conditions contraindicating physical activity or fruit and vegetable

Type of Study:


Study Design:

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Prevention

Outcome Measure:

Leisure Time Physical Activity

Outcome Description:

Physical Activity was measured using an adaptation of the Godin Leisure-Time Exercise Questionnaire. Participants reported how many times during an average week they participated in mild (i.e., takes minimal effort), moderate (i.e., increases your heart and breathing rate a little), and strenuous activity (i.e., caused one's heart to beat rapidly) for at least 30 minutes at a time.

Outcome Time Frame:


Safety Issue:


Principal Investigator

Raheem J Paxton, PhD

Investigator Role:

Principal Investigator

Investigator Affiliation:

University of Hawaii Cancer Research Center


United States: Institutional Review Board

Study ID:

CHS - 14544



Start Date:

August 2006

Completion Date:

August 2007

Related Keywords:

  • Physical Activity
  • Diet
  • Aging
  • physical activity
  • diet
  • goal setting



Cancer Research Center of Hawaii / University of HawaiiHonolulu, Hawaii  96813