Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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28.04.2022 |
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Do you need extra vitamin D if you are already supplementing with fish oil?
"Oily fish such as salmon and mackerel also contain a lot of vitamin D3," an Ergo-Log reader e-mailed. "I don't eat that every day, but I do take my fish oil capsules faithfully. Do I still need a vitamin D supplement?"
Study
The subjects had been given fish oil or a placebo, and researchers had determined the effect of the supplement on their vitamin D level.
Results
Someone with a vitamin D deficiency has less than 20 nanograms of vitamin D in one milliliter of blood. An optimal vitamin D level is above 50 nanograms per milliliter of blood.
Alhabeeb was able to calculate that the duration of the supplementation was a factor. In trials lasting longer than 8 weeks, the level rose by slightly more than 9 points. In shorter trials, level dropped a few tenths of a point.
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