The use of a commercial vegetable juice as a practical means to increase vegetable intake: A randomized controlled trial

Sonia F. Shenoy, Alexandra G. Kazaks, Roberta R. Holt, Hsin Ju Chen, Barbara L. Winters, Chor San Khoo, Walker Sc Poston, C. Keith Haddock, Rebecca S. Reeves, John P. Foreyt, M. Eric Gershwin, Carl L Keen

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Background. Recommendations for daily dietary vegetable intake were increased in the 2005 USDA Dietary Guidelines as consumption of a diet rich in vegetables has been associated with lower risk of certain chronic health disorders including cardiovascular disease. However, vegetable consumption in the United States has declined over the past decade; consequently, the gap between dietary recommendations and vegetable intake is widening. The primary aim of this study is to determine if drinking vegetable juice is a practical way to help meet daily dietary recommendations for vegetable intake consistent with the 2005 Dietary Guidelines and the Dietary Approaches to Stop Hypertension (DASH) diet. The secondary aim is to assess the effect of a vegetable juice on measures of cardiovascular health. Methods. We conducted a 12-week, randomized, controlled, parallel-arm study consisting of 3 groups of free-living, healthy volunteers who participated in study visits at the Ragle Human Nutrition Research Center at the University of California, Davis. All subjects received education on the DASH diet and 0, 8 or 16 fluid ounces of vegetable juice daily. Assessments were completed of daily vegetable servings before and after incorporation of vegetable juice and cardiovascular health parameters including blood pressure. Results. Without the juice, vegetable intake in all groups was lower than the 2005 Dietary Guidelines and DASH diet recommendations. The consumption of the vegetable juice helped participants reach recommended intake. In general, parameters associated with cardiovascular health did not change over time. However, in the vegetable juice intervention groups, subjects who were pre-hypertensive at the start of the study showed a significant decrease in blood pressure during the 12-week intervention period. Conclusion. Including 1-2 cups of vegetable juice daily was an effective and acceptable way for healthy adults to close the dietary vegetable gap. Increase in daily vegetable intake was associated with a reduction in blood pressure in subjects who were pre-hypertensive at the start of the trial. Trial Registration. Clinicaltrials.gov NCT01161706.

Original languageEnglish (US)
Article number38
JournalNutrition Journal
Volume9
Issue number1
DOIs
StatePublished - 2010

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Vegetables
Randomized Controlled Trials
Nutrition Policy
Diet
Health
Blood Pressure
Hypertension
Fruit and Vegetable Juices
United States Department of Agriculture
Drinking
Healthy Volunteers
Cardiovascular Diseases
Education
Research

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

Cite this

Shenoy, S. F., Kazaks, A. G., Holt, R. R., Chen, H. J., Winters, B. L., Khoo, C. S., ... Keen, C. L. (2010). The use of a commercial vegetable juice as a practical means to increase vegetable intake: A randomized controlled trial. Nutrition Journal, 9(1), [38]. https://doi.org/10.1186/1475-2891-9-38

The use of a commercial vegetable juice as a practical means to increase vegetable intake : A randomized controlled trial. / Shenoy, Sonia F.; Kazaks, Alexandra G.; Holt, Roberta R.; Chen, Hsin Ju; Winters, Barbara L.; Khoo, Chor San; Poston, Walker Sc; Haddock, C. Keith; Reeves, Rebecca S.; Foreyt, John P.; Gershwin, M. Eric; Keen, Carl L.

In: Nutrition Journal, Vol. 9, No. 1, 38, 2010.

Research output: Contribution to journalArticle

Shenoy, SF, Kazaks, AG, Holt, RR, Chen, HJ, Winters, BL, Khoo, CS, Poston, WS, Haddock, CK, Reeves, RS, Foreyt, JP, Gershwin, ME & Keen, CL 2010, 'The use of a commercial vegetable juice as a practical means to increase vegetable intake: A randomized controlled trial', Nutrition Journal, vol. 9, no. 1, 38. https://doi.org/10.1186/1475-2891-9-38
Shenoy, Sonia F. ; Kazaks, Alexandra G. ; Holt, Roberta R. ; Chen, Hsin Ju ; Winters, Barbara L. ; Khoo, Chor San ; Poston, Walker Sc ; Haddock, C. Keith ; Reeves, Rebecca S. ; Foreyt, John P. ; Gershwin, M. Eric ; Keen, Carl L. / The use of a commercial vegetable juice as a practical means to increase vegetable intake : A randomized controlled trial. In: Nutrition Journal. 2010 ; Vol. 9, No. 1.
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abstract = "Background. Recommendations for daily dietary vegetable intake were increased in the 2005 USDA Dietary Guidelines as consumption of a diet rich in vegetables has been associated with lower risk of certain chronic health disorders including cardiovascular disease. However, vegetable consumption in the United States has declined over the past decade; consequently, the gap between dietary recommendations and vegetable intake is widening. The primary aim of this study is to determine if drinking vegetable juice is a practical way to help meet daily dietary recommendations for vegetable intake consistent with the 2005 Dietary Guidelines and the Dietary Approaches to Stop Hypertension (DASH) diet. The secondary aim is to assess the effect of a vegetable juice on measures of cardiovascular health. Methods. We conducted a 12-week, randomized, controlled, parallel-arm study consisting of 3 groups of free-living, healthy volunteers who participated in study visits at the Ragle Human Nutrition Research Center at the University of California, Davis. All subjects received education on the DASH diet and 0, 8 or 16 fluid ounces of vegetable juice daily. Assessments were completed of daily vegetable servings before and after incorporation of vegetable juice and cardiovascular health parameters including blood pressure. Results. Without the juice, vegetable intake in all groups was lower than the 2005 Dietary Guidelines and DASH diet recommendations. The consumption of the vegetable juice helped participants reach recommended intake. In general, parameters associated with cardiovascular health did not change over time. However, in the vegetable juice intervention groups, subjects who were pre-hypertensive at the start of the study showed a significant decrease in blood pressure during the 12-week intervention period. Conclusion. Including 1-2 cups of vegetable juice daily was an effective and acceptable way for healthy adults to close the dietary vegetable gap. Increase in daily vegetable intake was associated with a reduction in blood pressure in subjects who were pre-hypertensive at the start of the trial. Trial Registration. Clinicaltrials.gov NCT01161706.",
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AU - Shenoy, Sonia F.

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AU - Chen, Hsin Ju

AU - Winters, Barbara L.

AU - Khoo, Chor San

AU - Poston, Walker Sc

AU - Haddock, C. Keith

AU - Reeves, Rebecca S.

AU - Foreyt, John P.

AU - Gershwin, M. Eric

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