The Fruit and Vegetable Study

NCT ID: NCT00468156

Last Updated: 2012-12-20

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

97 participants

Study Classification

INTERVENTIONAL

Study Start Date

2006-09-30

Study Completion Date

2008-06-30

Brief Summary

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The main aim of this study is to determine if persons can increase fruit and vegetable intakes if they make a specific plan to do so.

Detailed Description

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The conduct of cancer prevention trials through community settings and/or national networks of clinical sites requires the development of appropriate interventions. One promising behavioral strategy that is very simple to administer is that of the formulation of implementation intentions. The premise of this intervention is that once persons formulate a plan of action, automatic behavior follows. Use of this intervention in primary care is an innovative approach to eliciting preventive behaviors with minimal staff time. The goal in this study will be to increase fruit and vegetable consumption by 2 servings/day without a change in overall energy intakes by decreasing consumption of a less nutritious food. Substitution of foods is critical for prevention of weight gain. This feasibility study aims conduct a randomized, controlled clinical trial to test whether formulation of implementation intentions, either alone or with telephone support, can increase fruit and vegetable consumption without an increase in overall energy intakes. Recruitment success in a family medicine clinic in Ypsilanti Michigan will be documented with emphasis on the extent of minority participation. Dietary assessment will be the main outcome variable. Other assessments will include demographics, self-assessment of behaviors targeted by the intervention and levels of carotenoids in plasma. We will enroll 105 subjects to retain 28/arm, and power is good to detect small differences in fruit and vegetable intakes among the three study arms. This will generate useful data for the design of larger dietary intervention trials that are cost-effective and which will utilize multiple clinical sites to optimize enrollment.

Conditions

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Cancer

Keywords

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fruit vegetables prevention cancer counseling cancer risk

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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1

written materials only

Group Type ACTIVE_COMPARATOR

written materials only

Intervention Type BEHAVIORAL

related to fruit/vegetable servings/day

2

written materials plus asked to form implementation intentions

Group Type EXPERIMENTAL

written materials

Intervention Type BEHAVIORAL

related to fruit/vegetable servings/day

3

same as arm 2 plus telephone support

Group Type EXPERIMENTAL

telephone support

Intervention Type BEHAVIORAL

related to fruit/vegetable servings/day

Interventions

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written materials only

related to fruit/vegetable servings/day

Intervention Type BEHAVIORAL

written materials

related to fruit/vegetable servings/day

Intervention Type BEHAVIORAL

telephone support

related to fruit/vegetable servings/day

Intervention Type BEHAVIORAL

Other Intervention Names

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control asked to form implementation intentions written plus telephone

Eligibility Criteria

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Inclusion Criteria

* Age 40 and older
* Give informed consent
* In general good health
* Less than 5.5 servings/day of fruits and vegetables

Exclusion Criteria

* On medically prescribed diets that the study would not be consistent with
* Evidence of eating disorders
* Health problems that affect energy needs (eg. broken leg can interfere with normal activities and affect energy needs).
Minimum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Michigan

OTHER

Sponsor Role lead

Responsible Party

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Zora Djuric

Research Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Zora Djuric, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Michigan

Locations

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Ypsilanti Family Health Center

Ypsilanti, Michigan, United States

Site Status

Countries

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United States

References

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Djuric Z, Ellsworth JS, Ren J, Sen A, Ruffin MT 4th. A randomized feasibility trial of brief telephone counseling to increase fruit and vegetable intakes. Prev Med. 2010 May-Jun;50(5-6):265-71. doi: 10.1016/j.ypmed.2010.03.003. Epub 2010 Mar 11.

Reference Type RESULT
PMID: 20226809 (View on PubMed)

Other Identifiers

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HUM00004225

Identifier Type: -

Identifier Source: org_study_id