Health-Points: Friday 3.27.09

  • On the flipside, kids who get plenty of exercise have less depression. In adults, exercise releases endorphins helping people feel more upbeat, same goes for children. A study printed in the Journal of Pediatric Psychology divided overweight, sedentary kids, ages 7 to 11, into two exercise groups, one for 20 minutes a day and the other for 40 minutes, revealing as exercise increased so did the psychological benefits; via Booster Shots.
  • More love for vitamin D. New research in the Archives of Internal Medicine found daily supplements of vitamin D may reduce the risk of various bone breaks. The study, involving 42,279 adults, ages 65 and older, linked vitamin D with a 14% lower risk of non-vertebral fractures and 9% less risk of hip fractures. However, low-dose vitamin D supplements did not decrease the chance of fracture; via NutraIngredients.

Image credit: Jose Kevo

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Steve - March 27, 2009 3:39 PM

Hi Gerry
Interesting article comparing weight loss from higher intensity walking versus lower intensity walking.

You would expect lower intensity exercise to burn more fat, and higher intensity to burn more carbs, simply because fat cannot be burned anaerobically (Krebs cycle and all that).

It must be due to some after effect, or high intensity is more effective at shifting the cells metabolism to prefer to burn more fat (presumably at all but the highest intensities).

Perhaps the best weight loss tactic is to do a small amount of very high intensity, such as weight training with little rest between sets (like a circuit).

Cheers, Steve

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