Vitamin D improves energy production in muscles of vitamin D-deficient people

(Part 13 of 14 in John Briffa's "A Good Look at Good Health")

http://www.drbriffa.com/2013/03/18/vitamin-d-improves-energy-production-in-muscles-of-vitamin-d-deficient-people/

In this study, muscle function was assessed in a group of 12 individuals with known vitamin D deficiency. The assessment centred around timing the replenishment in the muscle of a substance known as phosphocreatine. Phosphocreatine is a key molecule in the production of energy (in the form of what is known as ATP) by tiny ‘powerhouses’ in the cells of our body known as mitochondria (pronounced my-toe-con-dree-ah). Shorter phosphocreatine replenishment times after activity are a sign of better mitochondrial function.

Vitamin D supplementation was found to lead to a significant reduction in phosphocreatine replenishment times, signalling an improvement in mitochondrial functioning. Fatigue ratings improved in all the study participants too.

The more I read, the more I believe that Vitamin D is a keystone for my health and progress. I believe that getting more sun exposure (walking, running, and Parkour outside), combined with taking vitamin D supplements has enabled a lot of other successes: Better sleep, better immune system functioning, better mood (ever hear of “Seasonal Affliction Disorder”?) and now, some evidence that it really does affect the performance of your mitochondria — your cells little power-houses.

Why is everyone so darned happy!?!

(Part 57 of 68 in ~ My Journey)

I think it may be the sun exposure.

When I started Parkour, I wasn’t even aware that I was generally UNhappy. But I sure did notice that everyone I met WAS happy. At first I just marked this down to “everyone is young”, and I set about simply enjoying training and playing with a mob of fun people.

Then, slowly, I realized I was becoming happy.

Now sure, some of this has to be due to my changing — some life-style changes, some dietary, some weight, some exercise, etc. But the more I’ve been reading, the more I’m inclined to blame some of it on the sun.

You see, it’s been shown that Vitamin D supplementation works wonders, and I’d bet that getting my Vitamin D the natural way is even better.

http://www.proteinpower.com/drmike/supplements/sunshine-superman/
http://www.drbriffa.com/2007/09/12/vitamin-d-supplementation-appears-to-save-lives/
http://www.drbriffa.com/2010/04/29/can-sunlight-and-vitamin-d-help-to-preserve-physical-function-and-independence-as-we-age/
http://www.artofmanliness.com/2009/09/01/dealing-with-male-depression/