It’s the middle of winter, and the days are dark and cold. But you’re still training intensely and eating clean to get ready for your upcoming competition. Unfortunately, there is one vitamin no amount of clean eating can fix, especially in athletes. New research suggests maintaining the right levels of vitamin D may improve several elements of performance, including your VO2 max, sprint capacity, and power production.
A Growing Research Field
Exercise dramatically increases an athlete’s demand for vitamin D, as your muscle, heart, and vascular tissue all contain key vitamin D receptors. Today, studies show more than 50 percent of athletes are low in vitamin D.1 While the direct cause isn’t clear, it’s most likely a combination of things like inflammatory processes, muscular damage, increased protein synthesis requirements, increased immune activity, lack of sun exposure, race, and genetics.2
A clear vitamin D deficiency occurs at blood levels less than 20ng/mL (< 50 nmol/L), while insufficiency for athletes is generally defined at blood levels between 20-32 ng/mL (50-80 nmol/L). Insufficiency simply means you’re not getting enough to meet the demands of your activity. Intense training is demanding. New research suggests that 40-50ng/mL (100-125 nmol/L) seems to be the “sweet spot” for supporting optimal athletic performance, and experts agree the body needs daily replenishment to meet that requirement.3,4
Achieving your ideal vitamin D intake may upgrade six key areas of performance:
- VO2 max
- Muscular power production
- Testosterone levels
- Susceptibility to colds and flu
Let’s take a closer look at each.
(Read the rest of my article @BreakingMuscle)