Bloomer et al. Medicine & Science in Sports & Exercise 2006
University of North Carolina - Greensboro
Study summary and findings:
Juice Plus+ effectively reduced the exercise-induced increase in plasma protein carbonyls, a marker for protein oxidation.
In earlier research, this group established the effects of the antioxidant vitamins C and E alone on oxidative stress resulting from aerobic exercise. Juice Plus+ contains a wide variety of natural antioxidants - including vitamins C and E. In this investigation, UNCG scientists tested whether the much lower levels of vitamins C and E in Juice Plus+ - delivered in combination with the other phytonutrients present - would have a similar effect as much higher doses of isolated vitamins C and E. This investigation was a randomized, double-blind, placebo-controlled study of 48 healthy, aerobically trained men and women, average age 23 years. The study subjects were divided into three groups who were assigned to take: placebo; 1000 mg vitamin C and 400 IU vitamin E; or, Juice Plus+ Orchard Blend, Garden Blend and Vineyard Blend for two weeks. While all subjects as anticipated had an increase in protein carbonyls after running thirty minutes, both the freestanding vitamin group and the Juice Plus+ group had a significantly lower increase in this marker of oxidative stress compared to the placebo group. The study's conclusion: Juice Plus+ - with its substantially lower amounts of vitamins C and E - provided similar antioxidant benefits compared to large doses of freestanding vitamins C and E.
Article Abstract: Medicine & Science in Sports & Exercise 2006; 38 (6): 1098-1105
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