In a double-blind, placebo-controlled study published in the journal Clinical Nutrition in June 2013, twenty three overweight adults were given either a placebo or 4000 IU of vitamin D for 12 weeks. During this time they all took part in a weight resistance training program. Muscle strength and power were measured before starting and again at 4, 8, and 12 weeks.
In the first month, muscle strength only improved in the group taking vitamin D. No improvement was seen in the placebo group. In addition, as vitamin D status improved, waist-to-hip ratio also improved. Peak power was significantly increased at 4 weeks only in the group taking Vitamin D. This shows that vitamin D consumption significantly benefits those who weight train.
When shopping for vitamin D supplements, you will find both vitamin D2 and D3. Numerous studies have concluded that vitamin D3 is the superior form. The most common source of vitamin D3 comes from sheep’s wool. However, there is a superior and cleaner plant-based source of D3: lichen.
Sunwarrior’s Raw Vitamins contain this superior source of plant-based vitamin D3. Just one serving of the vitamins supplies 800 IU of superior D3. There are numerous reasons to consume vitamin D3, ranging from increasing bone density to boosting the immune system. And now we know that D3 helps us to build muscle also!