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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...

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...

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. 

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...

The Keto Diet and Endurance Exercise

Posted by Dr. Robert Portman on 7/17/2019 to Performance Tip Of The Week
The Keto Diet and Endurance Exercise
For endurance athletes the keto diet sounds ideal. By keeping carbohydrate consumption low, fat becomes the primary fuel for muscles during exercise. Increased fat burning translates into increased lean body mass. Like many propositions, it sounds too good to be true and it is. Although your muscles primarily use carbohydrate and fat for fuel they are not necessarily interchangeable...

Is Water The Best Sports Drink?

Posted by Dr. Robert Portman on 7/11/2019 to Performance Tip Of The Week
Is Water The Best Sports Drink?
In these hot, humid days, maintaining fluid balance should be the #1 priority for all endurance athletes. No other physiological parameter causes as rapid and significant drop in exercise performance as dehydration. As little as a 2% drop in body weight through sweating results in a decrease in exercise performance. That isn’t very much. It’s not uncommon for an individual weighing 150 lbs. to lose 3 lbs. during an endurance bout lasting 45 minutes. Dehydration causes...

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