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Child soccer players who were deficient were helped by a single 200,000 IU vitamin D dose – RCT May 2020

A single mega dose of vitamin D3 improves selected physical variables in vitamin D-deficient young amateur soccer players: a randomized controlled trial

Applied Physiology, Nutrition, and Metabolism, May 2020, 45(5): 478-485, https://doi.org/10.1139/apnm-2019-0525
Ikram Bezrati,ab Mohamed Kacem Ben Fradj,a Raouf Hammami,*b Nejmeddine Ouerghi,*c Johnny Padulo,d Moncef Fekia


Overview Sports and vitamin D has the following summary
Athletes are helped by vitamin D by:

  1. Faster reaction time
  2. Far fewer colds/flus during the winter
  3. Less sore/tired after a workout
  4. Fewer micro-cracks and broken bones
  5. Bones which do break heal much more quickly
  6. Increased VO2 and exercise endurance Feb 2011
  7. Indoor athletes especially need vitamin D
  8. Professional indoor athletes are starting to take vitamin D and/or use UV beds
  9. Olympic athletes have used UV/vitamin D since the 1930's
  10. The biggest gain from the use of vitamin D is by those who exercise less than 2 hours per day.
  11. Reduced muscle fatigue with 10,000 IU vitamin D daily
  12. Muscle strength improved when vitamin D added: 3 Meta-analysis
  13. Reduced Concussions
    See also: Sports and Vitamin D category 234 items

Sports category starts with

234 items in Sports category

Sports benefits from up to 50 ng (click on chart for details)
Sports benefit up to 50 ng @ /is.gd/Vitdsports
see also:
Overview Sports and vitamin D     Concussions
Military    Muscle    Overview Fractures and vitamin D
Vitamin D supplementation increases strength of lower muscles – Meta-analysis April 2019
Athletes helped by weekly 50,000 IU Vitamin D – RCT Aug 2019
Many Foot and ankle problems are treated by Vitamin D – review of 35 studies – Sept 2019
Vitamin D provides faster recovery after muscle overuse – April 2013
NCAA trainers are getting on board the Vitamin D train (40-50 ng)– Nov 2019

 Download the PDF from Sci-Hub via VitaminDWiki

Note: Not much left of a loading dose at 12 weeks
Probably vitamin D levels were > 30 - which can build muscle for most of the trial
Probably a monthly 100,000 IU dose would have produced even more benefit


This randomized controlled trial aimed to test whether vitamin D (VD) supplementation affects measures of physical performance in VD-deficient, mildly trained children. Thirty-six recreationally soccer player boys were randomly assigned to single dose (200 000 IU) of VD3 (n = 19) or placebo (n = 17). Plasma 25-hydroxyvitamin D (25-OHD) was assessed and measures of physical performance (i.e., vertical and standing broad jumps, triple hop, 10-m and 30-m sprints, shuttle run) were performed before and 12 weeks after the loading dose. Mixed ANCOVA models were performed and effect size was estimated by partial eta squared (ηp2). Baseline 25-OHD and physical variables were equivalent in the 2 groups. Twelve weeks after VD loading, plasma 25-OHD increased and physical variables improved only in the VD group. There was a significant interaction effects for group by time for vertical jump (F = 14.9, p = 0.001, ηp2 = 0.394), triple hop jump (F = 24.2, p < 0.001, ηp2 = 0.513), 10-m (F = 4.46, p = 0.046, ηp2 = 0.162) and 30-m (F = 6.56, p = 0.017, ηp2 = 0.222) sprints, and shuttle run (F = 13.4, p = 0.001, ηp2 = 0.369).
In conclusion, a single bolus of VD3 resulted in significant improvements in jumping ability, agility, and running speed in mildly trained children that are deficient in VD. The findings suggest that correcting VD deficit might be beneficial for physical performance.


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13793 200,000 IU soccer table.jpg admin 06 May, 2020 20:25 44.52 Kb 117
13792 200,000 IU soccer 12 weeks.png admin 06 May, 2020 20:25 99.84 Kb 149
13790 200,000 IU soccer.pdf admin 06 May, 2020 20:23 958.75 Kb 158
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