Archive for May, 2007

Fish oil and exercise

Thursday, May 31st, 2007

Combining fish oil with aerobic exercise provides benefits greater than either independently. The subjects received 6 grams per day of fish oil. A healthy dose of just over a teaspoon. Both fish oil supplementation and aerobic exercise reduce body fat. Fish oil reduces triglycerides, increases HDL and improves arterial vasodilation. Exercise ...

Ultraendurance exercise and fat utilization

Monday, May 28th, 2007

Not suprisingly, ultraendurance athletes utilize large quantities of body fat to fuel their races. In fact, 11% of their body fat was burned off in a 4 to 5 day races. Respiratory exchange ratio and plasma fatty acids showed increased fat utilization during exercise. The researchers speculated that the changes were the ...

Muscle strength and insulin sensitivity

Thursday, May 24th, 2007

There is a significant, direct relationship between muscle strength and insulin sensitivity. Not suprisingly, an association was also found between lean body mass and muscle strength. Resistance training depletes intramuscular glycogen stores, which enhances glucose uptake all by itself. Resistance training can also positively affect hormone levels. Abstract

Fat oxidation rates and exercise intensity

Monday, May 21st, 2007

Recreational athletes were tested at multiple aerobic exercise intensities (55%, 65%, 75%, 85% and 95% of anaerobic threshold) to determine fat oxidation rates. No difference was found between the intensity and energy from fat metabolism. The additional energy demands of higher intensity exercise must have been met by carbohydrates. Unfortunately, the ...

Post-exercise protein turnover

Friday, May 18th, 2007

Runners consumed either a low protein, moderate protein or high protein diet and whole body protein turnover was measured post exercise. Unfortunately, changes in body composition were not studied. No difference in protein synthesis was found between the diets. Protein breakdown was increased in the high protein group, probably indicating that ...

The effect of portion sizes on gorging

Monday, May 14th, 2007

Splitting up a fast food meal and consuming it in smaller portions does not appear to have any affect on the total calories consumed. The researches concluded that this was due to the inherint problems of the foods themselves...low fiber, good taste, along with high fat and sugar content. Another problem ...