The Role Of Proper Nutrition In The Endurance Athlete

By DAVID PHILIPS M.D.

Much has been talked about in the sports and  science community about the adverse affects of prolonged and strenuous exercise as it relates to the production of free  radicals in an athlete’s body. What are these byproducts of aerobic exercise and why are they damaging to the human  body? More importantly, what role do antioxidants play in neutralizing these damaging molecules and what can we as  athletes do to facilitate this protective process?

 

* WITHOUT GOOD PROPER NUTRITION YOU MIGHT END UP LIKE THIS DURING YOUR WORKOUT :/

The ‘Radical’ Concept

Free radicals are highly reactive species  produced during various molecular processes in the human body. While environmental factors such as pollution, radiation  and cigarette smoke can spawn free radicals, in this article we will focus on those free radicals produced during  endurance exercise. Free radicals are atoms or groups of atoms  with an odd or unpaired number of electrons and can be formed when oxygen interacts with certain molecules. Once formed,  these reactive radicals can start a chain reaction, similar to a domino effect. In other words, these compounds attack  the nearest stable molecule, “stealing” its electrons in order to gain stability. When the “attacked” molecule loses its  electron, it becomes a free radical itself, beginning a chain reaction. Once the process is started it can cascade,  resulting in the disruption of a living cell. Free radical damage not only contributes to accelerated aging, it also  causes damage to immune cells. It’s not uncommon for endurance athletes such as triathletes or marathoners to have a  higher incidence of colds and upper respiratory infections after competition and intense training. Free radical damage  to cellular DNA plays a significant role in the evolution of certain cancers, heart disease and neurological disorders  such as Alzheimer’s disease.

Exercise and Oxidative Damage

Endurance exercise can increase oxygen  utilization from 10 to 20 times over the resting state and up to 100 to 200 times in working muscles. This greatly  increases the generation of free radicals via oxidative metabolism in skeletal mitochondria. Fortunately, the body has  an elaborate antioxidant defense system that utilizes dietary intake of antioxidant vitamins and minerals as well as our  body’s own enzyme systems to decrease concentrations of the most harmful oxidants in tissues. Regular endurance training  has been shown to enhance our internal antioxidant defense system, these changes of which occur slowly over time and  appear to parallel other adaptations to exercise. When free radical production exceeds the ability of antioxidant  enzymes and nutritionally obtained antioxidants to neutralize them, oxidative stress results. So, what can we as  endurance athletes do to minimize the damage caused by the inevitable overflow of free radicals during training and  competition?

Fruits and Vegetables: The Power of  the Pyramid!

A recent change in dietary intake of fruits  and vegetables by the USDA has placed a greater emphasis on increasing our daily consumption from the previous 5-7  servings a day to 7-9 servings and up to 13 servings or more for endurance athletes! Vitamins C, E, and beta carotene  are the primary vitamin antioxidants. Previous research looking into the effects of supplementing our diets with these  isolated nutrients has yielded equivocal results. Once thought to be beneficial to cardiac health, isolated vitamin E  supplementation has now been questioned. Beta carotene supplements have been shown to increase lung cancer in smokers as  well as contribute to thickening of the lining of arteries. Recent studies now point to the synergistic  role of numerous antioxidants obtained from the consumption of whole foods such as fruits and vegetables. Therefore, a  diet rich in naturally occurring antioxidants appears to outweigh the risks inherent to supplementing one’s diet with  isolated laboratory made supplements. Furthermore, various key trace minerals such as zinc, selenium and manganese found  in naturally occurring foods are needed for the proper functioning of various endogenous antioxidant enzymes.

Training Right, Eating Right:  Final  Thoughts

The endurance athlete faces a challenge of  balancing daily aerobic exercise with preventative measures that minimize the damaging effects of oxidative stress.   Clearly, fruits and vegetables rich in antioxidants are vital to this balance. Many of us may find it difficult to  consume the recommended amounts of fruits and vegetables to achieve this balance. For those who are unable to take in  enough daily produce, cryoevaporated fruits and vegetables in capsule form, such as Juice Plus+, make it possible to  supplement what we are not able to consume when we visit the salad bar. Antioxidant supplementation helps to bridge the  gap between what we eat on a daily basis (what we know we should be eating!) and the optimal amount of phytonutrients  needed to combat the damaging effects of oxidative stress. As endurance athletes, it is important to be  aware of not only the benefits of aerobic exercise but the potentially negative aspects training and racing can have on  our bodies and long term health. Finding a healthy balance between training and proper nutrition will go a long way in  promoting longevity in any endurance athletic activity.

GROWING UP AND THROUGHOUT COLLEGE I ALWAYS THOUGHT YOU COULD JUST WORKOUT AND BURN ALL THE CALORIES OFF NO MATTER WHAT YOU WERE EATING. WITH BETTER RESEARCH AND SCIENCE DOCTORS AND ATHLETES ARE REALIZING THAT YOU NEED A BALANCED NUTRITION AND MANY KINDS OF FRUITS AND VEGETABLES IN ORDER TO PERFORM AT THE OPTIMAL LEVEL. I WISH I KNEW HALF OF WHAT I KNOW NOW IN REGARDS TO GETTING MANY KINDS OF FRUITS AND VEGETABLES IN YOUR DIET. ESPECIALLY IF YOU TRAIN HARD AND WORK OUT EVERYDAY YOU NEED TO GIVE YOUR BODY A CHANCE TO BURN CALORIES EFFICIENTLY. YOU WOULD NOT PUT BAD GAS OR OIL INTO A FERRARI SO DON’T DO IT TO YOURSELF. TREAT YOUR BODY AS IF IT IS THE BEST MACHINE EVER BUILT AND GIVE YOURSELF A FIGHTING CHANCE TO BECOME THE BEST ATHLETE/ INDIVIDUAL YOU CAN BE THIS NEW YEAR! 🙂

WATCH WHAT DAVID PHILLIPS HAS TO SAY ABOUT JUICE PLUS AND WHAT IT CAN DO FOR YOU! MAKE SURE TO VISIT WWW.roworx.com FOR MORE INFORMATION ON GROUP EXERCISE FITNESS CLASSES AS WELL AS WWW.JNUNNJUICEPLUS.COM FOR MORE VIDEOS ON THE IMPORTANCE OF FRUITS AND VEGETABLES AND PROPER NUTRITION!!!

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Jack Nunn

Jack Nunn is the head trainer and owner of Roworx. Jack is a former national team rower who has competed in more than 100 triathlons, including 9 full Ironmans. He has created a system of rowing that prepares the whole body for both competition and fitness longevity.