Weight loss studies.

A recently published in the May 2012 issue of IDEA Fitness Journal entitled specialized Eating or fasting for fat loss item: Controversy persists, by Dr. Len Kravitz PhD " for weight loss studies.

First, let me say that I am a big fan of Dr. Kravitz , however , I have some questions and comments about your article about weight loss studies.

Weight loss studies.

In the study, which took eight men who skip breakfast before being formed , but a small "normal" after your workout, then had the same eight men eat 673 calories Mediterranean breakfast before drive to see which version burns more fat during the day of fasting or not fasting before a workout for weight loss studies.

One. Only eight men were " trained " with an average height of 70 inches and a weight of 207 pounds. At 5'10 and 207 pounds how they have been " trained? " Never mentions their lactate threshold . Why is this important ? Although volunteers are cardiovascular work 36 minutes on a treadmill at 65% of heart rate reserve , do not tell me what I ' I need to know weight loss studies.

Weight loss studies...

for example, an athlete will not aerobic and anaerobic training up to 90 +% of heart rate reserve and 65% of this type of athlete would not be as much intensity to perceive, therefore , weight loss studiesconsumption after exercise (EPOC) would not be much for COPD increases due to the intensity . A trained aerobic athlete does not burn a lot of sugar at full intensity. I wish I had seen these data get an idea of ​​what kind of level of aerobic capacity were these eight subjects . No. I have many male clients who are 5'10 and 207 pounds weight loss studies.

Two . In a letter , Dr. Kravitz shows the oxygen consumption of the year after 12 hours and the 24-hour mark weight loss studies. The graph shows the eight subjects burned slightly more calories because it had a top and bottom COPD RER ( respiratory exchange ratio) . RER rises as your body uses more carbohydrates for its energy needs . In essence , the article misleading leads us to believe they were burning more calories, but the calories are not sugar , I 'll explain later . I do not want to see the rest of the calculations. Despite his COPD was higher , ate 673 calories for the day. Only 673 calories COPD offset higher ?

At the end of the day , what are the themes found in a calorie deficit ? Did you lose body fat weight loss studies? During the week of fasting, subjects consumed a breakfast "normal" after the training. The calorie intake for breakfast was not defined , so I do not know the total daily caloric intake for both groups weight loss studies.

Three . According to the graph , there were only a.3 O2/kg/min ml difference between the groups in the 12-hour mark , and even less in the 24-hour mark ! Although RER was slightly ( and I mean a little ) in the group exercise on an empty stomach weight loss studies, the two groups were burning a mixture of carbohydrates and fats. A TCR of 0.70 indicates that fat is the predominant fuel source , 0.85 TCR suggests a mix of fat and carbohydrates , and a value of 1.00 or more is indicative of carbohydrates being predominant source of energy about weight loss studies. The RER of the week without fasting was 8.0 to 12 hours , and 8.25 to 24 hours, while the fasting group was 8.25 and 8.75 .