Vol 6: Vitamin C Supplementation Slightly Improves Physical Activity Levels and Reduces Cold Incidence in Men with Marginal Vitamin C Status: A Randomized Controlled Trial.Reportar como inadecuado



 Vol 6: Vitamin C Supplementation Slightly Improves Physical Activity Levels and Reduces Cold Incidence in Men with Marginal Vitamin C Status: A Randomized Controlled Trial.


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This article is from Nutrients, volume 6.AbstractThe early indications of vitamin C deficiency are unremarkable fatigue, malaise, depression and may manifest as a reduced desire to be physically active; moreover, hypovitaminosis C may be associated with increased cold duration and severity. This study examined the impact of vitamin C on physical activity and respiratory tract infections during the peak of the cold season. Healthy non-smoking adult men 18–35 years; BMI 34 kg-m2; plasma vitamin C 45 µmol-L received either 1000 mg of vitamin C daily n = 15 or placebo n = 13 in a randomized, double-blind, eight-week trial. All participants completed the Wisconsin Upper Respiratory Symptom Survey-21 daily and the Godin Leisure-Time Exercise Questionnaire weekly. In the final two weeks of the trial, the physical activity score rose modestly for the vitamin C group vs. placebo after adjusting for baseline values: +39.6% 95% CI −4.5,83.7; p = 0.10. The number of participants reporting cold episodes was 7 and 11 for the vitamin C and placebo groups respectively during the eight-week trial RR = 0.55; 95% CI 0.33,0.94; p = 0.04 and cold duration was reduced 59% in the vitamin C versus placebo groups −3.2 days; 95% CI −7.0,0.6; p = 0.06. These data suggest measurable health advantages associated with vitamin C supplementation in a population with adequate-to-low vitamin C status.



Autor: Johnston, Carol S.; Barkyoumb, Gillean M.; Schumacher, Sara S.

Fuente: https://archive.org/







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