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FIGURE 5—URTI average duration (A and D), peak URTI severity (B and E), and total days with URTI during military training (C and F), in the vitamin D supplementation (SSR and ORAL) vs placebo supplementation groups (SSR-P and ORAL-P) in all participants (
Figure 6. FIGURE 5—URTI average duration (A and D), peak URTI severity (B and E), and total days with URTI during military training (C and F), in the vitamin D supplementation (SSR and ORAL) vs placebo supplementation groups (SSR-P and ORAL-P) in all participants (left-hand column) and participants with a baseline 25(OH)D <50 nmol·L−1 (n = 62; right-hand column). * and # lower than placebo, P < 0.05 and P = 0.05, respectively. Data are presented as mean ± SD. d = Cohen’s d effect size. aMaximum possible peak severity (24 AU). bTotal number of days for military training (84 d).

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Source Paper

Influence of Vitamin D Supplementation by Simulated Sunlight or Oral D3 on Respiratory Infection during Military Training.

Medicine and science in sports and exercise (2021)

PMID: 33481482

DOI: 10.1249/MSS.0000000000002604

Cite This Figure

![Figure 6: FIGURE 5—URTI average duration (A and D), peak URTI severity (B and E), and total days with URTI during military training (C and F), in the vitamin D supplementation (SSR and ORAL) vs placebo supplementation groups (SSR-P and ORAL-P) in all participants (](https://pdfs.citedhealth.com/figures/33481482/138.png)

> Source: Sophie E Harrison et al. "Influence of Vitamin D Supplementation by Simulated Sunlight or Oral D3 on Respi." *Medicine and science in sports and exercise*, 2021. PMID: [33481482](https://pubmed.ncbi.nlm.nih.gov/33481482/)
<figure>
  <img src="https://pdfs.citedhealth.com/figures/33481482/138.png" alt="FIGURE 5—URTI average duration (A and D), peak URTI severity (B and E), and total days with URTI during military training (C and F), in the vitamin D supplementation (SSR and ORAL) vs placebo supplementation groups (SSR-P and ORAL-P) in all participants (" />
  <figcaption>Figure 6. FIGURE 5—URTI average duration (A and D), peak URTI severity (B and E), and total days with URTI during military training (C and F), in the vitamin D supplementation (SSR and ORAL) vs placebo supplementation groups (SSR-P and ORAL-P) in all participants (<br>  Source: Sophie E Harrison et al. "Influence of Vitamin D Supplementation by Simulated Sunlight or Oral D3 on Respi." <em>Medicine and science in sports and exercise</em>, 2021. PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/33481482/">33481482</a></figcaption>
</figure>

Related Evidence

A
Vitamin D for Upper Respiratory Tract Infections

Grade A · 40 studies