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Low Carb Diet And Endurance Performance - Part 2

Posted by Dr. Robert Portman on 11/19/2019 to Performance Tip Of The Week
Low Carb Diet And Endurance Performance - Part 2
Last blog reviewed the results of a recent study which has been the subject of extensive media coverage. The study was designed to show that high insulin levels generated by high carbohydrate consumption, may increase the conversion of food into fat storage... The obvious question is what these results mean to serious endurance athletes who are trying to improve performance and maintain an ideal weight. Is insulin the good guy or the bad guy?

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Does A Low Carb Diet Help You Lose Weight - Part 1

Posted by Dr. Robert Portman on 10/29/2019 to Performance Tip Of The Week
Does A Low Carb Diet Help You Lose Weight - Part 1
A recent study published in the British Medical Journal has received an enormous amount of publicity. In a well-designed protocol, investigators studied the effect of a low carbohydrate diet on energy expenditure. Traditional thinking is a calorie is a calorie whether it comes from protein, fat or carbohydrate. The researchers found, however, that subjects consuming a low carbohydrate diet...

 
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VITAMIN D: The Endurance Vitamin – Part 2

Posted by Dr. Robert Portman on 10/23/2019 to Performance Tip Of The Week
VITAMIN D: The Endurance Vitamin – Part 2
VITAMIN D: The Endurance Vitamin – Part 1 discussed the role of Vitamin D on endurance performance. Normal levels of Vitamin D range from 20 to 50 ng/ml. However a recent study suggests that athletes who have Vitamin D at the upper range of normal have improved endurance performance. The study, reported by researchers at Virginia Commonwealth University, showed a direct relation between Vitamin D levels and cardio respiratory fitness. What makes this research compelling is...

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VITAMIN D: The Endurance Vitamin – Part 1

Posted by Dr. Robert Portman on 10/16/2019 to Performance Tip Of The Week
VITAMIN D: The Endurance Vitamin – Part 1
All vitamins are essential but one, vitamin D may be particularly important for endurance athletes. Vitamin D is best known for its role in building healthy bones. Vitamin D is essential for calcium absorption. However a number of studies have shown that vitamin D plays an important role in enhancing endurance performance. For example...

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Breakthrough in Electrolyte Replenishment

Posted by Dr. Robert Portman on 8/30/2019 to Performance Tip Of The Week
Breakthrough in Electrolyte Replenishment
Electrolyte replenishment tablets can be extremely valuable and useful, especially when exercising for extended periods in hot and humid conditions. Salt pills, the original electrolyte replenishment product, were introduced long before sports drinks. During exercise, your body loses considerable amounts of sodium thru sweating. Although the evaporation of sweat is essential in maintaining body temperature, loss of sodium negatively impacts electrolyte balance and the body's rehydration mechanisms. 

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Can Exercise Negatively Impact Mental Concentration?

Posted by Dr. Robert Portman on 7/31/2019 to Performance Tip Of The Week
Can Exercise Negatively Impact Mental Concentration?
That almost sounds like hearsay since the positive benefits of regular exercise on health parameters are well documented. Multiple studies have shown that regular exercise decreases the incidence of cardiovascular disease and diabetes and can even impact the severity and onset of Alzheimer’s. Non-controlled studies also show individuals that exercise regularly have a more positive attitude about life and are better able to focus. However, a key question is whether exercise improves cognitive performance such as mental concentration and focus...

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