Archive for the ‘Exercise’ Category

Fatness, Fitness and Insulin Sensitivity

Monday, September 17th, 2007

It is well established that exercise improves insulin sensitivity through both glycogen depletion and activation of non-insulin mediated glucose transport. Obesity is associated with insulin resistance. Aerobic exercise is at least partially corrective for obese individuals. Overall, the best insulin sensitivity is found in normal weight, fit individuals and the worst insulin ...

Ultra-endurance races and body composition

Tuesday, July 24th, 2007

A multiple stage, ultra-endurance triathlon over 10 days resulted in significant fat loss and no loss of lean body mass, indicating that all of the weight lost was from body fat. The participants lost an average of 3 kg (about 6.6 lbs). Low intensity aerobic exercise is predominantly fueled by fatty ...

Fat oxidation rates

Tuesday, July 17th, 2007

A small group of obese and non-obese adolescents were tested to determine maximum fat oxidation rates during exercise. Maximum fat oxidation occured at around 58% maximum heart rate. Males had slightly higher fat oxidation at that intensity. Interestingly, there was no difference between the obese and non-obese groups. Fat oxidation rates ...

The effect of exercise intensity on glucose tolerance

Monday, June 18th, 2007

A glucose tolerance test (GTT) was performed on subjects following either low intensity, high volume resistance exercise or high intensity, low volume resistance exercise. The high intensity group attained better glucose tolerance than the low intensity group. This is consistant with a greater glycogen depletion with high intensity exercise. Abstract

Exercise and Fish Oil

Monday, June 11th, 2007

Another study showing the synergism of fish oil supplementation and exercise. Fish oil alone was enough to reduce triglycerides. But the addition of exercise significantly increased HDL, above what can be achieved with either fish oil or exercise alone. The fish oil dosage was 4 grams per day. Abstract

The affect of dietary intake on hormones during strength training

Monday, June 4th, 2007

Older Finnish men began a strength training program, half of them also receiving dietary counseling. The counseled group increased carbohydrate and fiber intake, consumed less total fat but improved the polyunsaturated/saturated fat ratio. Both groups experienced similar results with regard to strength and muscle mass increases. The training effect was correlated ...