Posts Tagged ‘muscle’

Manipulating The Glycemic Index Diet – The Winning Edge ???

distance runners, Fitness, nutrition, performance, Recovery - Repair, strength | Posted by admin September 13th, 2015

A high-carbohydrate training diet is a must for optimum sports performance because it produces the biggest stores of muscle glycogen. Unlike the fat stores in the body, which can release almost unlimited amounts of fatty acids, the carbohydrate stores are small. They are fully depleted after two or three hours of strenuous exercise. This depletion of carbohydrate stores is called “hitting the wall.” The blood glucose concentration begins to decline at this point. If exercise continues as the same rate, blood glucose may drop to levels that interfere with brain function and cause disorientation and unconsciousness.

All else being equal, the eventual winner is the person with the largest stores of muscle glycogen. It is important to maximize your muscle glycogen stores by ingesting a high-carbohydrate training diet and by carb loading in the days prior to the competition.

There are times when low G.I. foods provide an advantage and times when high G.I. are better. For best performance a serious athlete needs to learn which foods have high and low G.I. factors and when to eat them. Understanding the glycemic index and making the best food choices can give you an advantage.

Low-GI Foods: Before the Event
Low-GI foods have been proven to extend endurance when eaten alone one or two hours before prolonged strenuous exercise. Low-GI foods are best eaten about two hours before the big event –so that the meal will have left the stomach but will remain in the small intestine, slowly releasing glucose energy, for hours afterwards. The slow rate and steady stream of glucose trickles into the bloodstream during the event. Most importantly, the extra glucose will still be available toward the end of the exercise, when muscle stores are running close to empty. In this way, low-GI foods increase endurance and prolong the time before exhaustion hits.

When a pre-event meal of lentils (low GI value) was compared with one of potatoes (high GI value), cyclists were able to continue cycling at high intensity (65 percent of their maximum capacity) for twenty minutes longer when the meal had a low G value. Their blood-glucose and insulin levels were still above fasting levels at the end of exercise, indicating that carbohydrates were continuing to be absorbed from the small intestine even after ninety minutes of strenuous exercise.

In any sport context, it’s critical to select low-GI foods that do not cause gastrointestinal discomfort (stomach cramps, etc.). Some low-GI foods, such as legumes that are high in fiber or ingestible sugars, may produce symptoms in people not use to eating large amounts of them. There are plenty of low-fiber, low-GI choices, including pasta, noodles, and Basmati rice.

High- GI Foods: During and After the Event
While the pre-event meal should have a low GI value, scientific evidence indicates that there are times when high-GI foods are preferable. This includes during the event, after the event, and after normal training sessions. This is because high-GI foods are absorbed faster and stimulate more insulin, the hormone responsible for getting glucose back into the muscles for either immediate or future use.

During the event
High-GI foods should be used during events lasting longer than ninety minutes. This form of carbohydrate is rapidly released into the bloodstream and ensures that glucose is available for oxidation in the muscle cells. Liquid foods are usually tolerated better than solid foods, for endurance racing for example, because they are emptied more quickly from the stomach. Sports drinks are ideal during the race because they replace water and electrolytes as well. If you feel hungry for something solid during a race, try jelly beans (GI value of 80) or another form of high-glucose candy. Consume 30 to 60 grams of carbohydrate per hour during the event.

After the event (recovery)
In some competitive sports, athletes compete on consecutive days, and glycogen stores need to be at their maximum each time. Here it is important to restock the glycogen store in the muscles as quickly as possible after each day’s events. High-GI foods are best in this situation. Muscles are more sensitive to glucose in the bloodstream in the first hour after exercise, so a concerted effort should be made to get as many high-GI foods in as soon as possible.

Suggested foods include most of the sports drinks which replace water and electrolyte losses, or high-GI rice (e.g., jasmine), breads, and breakfast cereals such as cornflakes or rice krispies. Potatoes cooked without fat are good choice too but their high satiety means it is hard to eat lots of them.

Carbohydrate Loading For Training & Understanding
Why This Is Important…

It’s not just your pre- and post-event meals that influence your performance. Very active people need to eat much larger amounts of carbohydrates than inactive people. Consuming a high-carbohydrate diet every day will help you reach peak performance. When athletes fail to consume adequate carbohydrates each day, muscle and liver glycogen stores eventually become depleted. Dr. Ted Costill at the University of Texas showed that the gradual and chronic depletion of stored glycogen may decrease endurance and exercise performance. Intense workouts two to three times a day draw heavily on the athlete’s muscle glycogen stores. Athletes on low-carbohydrate diet will not perform their best because muscle stores of fuel are low.
If the diet provides inadequate amounts of carbohydrate, the reduction in muscle glycogen will be critical. An athlete training heavily should consume about 500 to 800 grams of carbohydrate a day (about two to three times normal) to help prevent carbohydrate depletion. Typically, American adults consume between 200 to 250 grams of carbohydrates each day.

Could a High-GI Diet Be Harmful to Athletes?

By virtue of their high activity levels, athletes have optimal insulin sensitivity. When they eat high-carbohydrate, high-GI foods, blood glucose and insulin levels rise far less in them than in the average person. This also provides the athlete with a bonus by not exposing their bodies to dangerous levels of blood glucose which produce disease in sedentary, insulin resistant individuals.

Adapted from the Book: The New Glucose Revolution
Written by: Jennie Brand-Miller, PhD
Thomas M.S. Wolever, MD PhD
Stephen Colagiuri, MD
Kaye Foster-Powell, M Nutr & Diet

Are Your Prescriptions Depleting Your Nutritional Status ?

anti-aging, disease, Fitness, Free Radicals, nutrition, performance, Recovery - Repair, strength | Posted by admin September 1st, 2015

Becoming familiar with the nutritional depletion effects of taking prescription drugs must be considered in order to adjust diet and nutritional supplements for maintaining optimal health, strength and performance…  Check below for your potential risks…

 

Micronutrient Depletion Rx GuideRev 

(Revised  – September 2, 2015)

Patients shouldn’t self-medicate with supplements. Over-supplementing can be harmful.

Understanding how nutrients correlate with each other is a critical part of a personalized

supplement plan.

 

Decrease Oxidative Stress Naturally in Healthy Older Men and Women?

anti-aging, disease, Free Radicals, nutrition, Recovery - Repair | Posted by admin November 8th, 2013

Compared with young adults, older adults have significantly impaired capacities to resist oxidative damage when faced with acute stress such as ischemia/reperfusion. This impairment likely contributes to increased morbidity and mortality in older adults in response to acute trauma, infections, and the susceptibility to diseases such as atherosclerosis, cancer, diabetes, and Alzheimer’s disease.  Consumption of foods high in polyphenols, particularly anthocyanins, have been associated with improved health, but the mechanisms contributing to these salutary effects remain to be fully established.

A study tested the hypothesis that consumption of tart cherry juice containing high levels of anthocyanins improves the capacity of older adults to resist oxidative damage during acute oxidative stress. In a double-blind, placebo-controlled, crossover design, data suggests that consumption of tart cherry juice improves antioxidant defenses in vivo in older adults as shown by an increased capacity to constrain an oxidative challenge and reduced oxidative damage to nucleic acids.

Oxidative stress, defined as an imbalance between the rate of formation and the rate of clearance of reactive oxygen and nitrogen species (RONS), is thought to be a key mechanism in the aging process and in a variety of age-related chronic diseases, including atherosclerosis, cancer, diabetes, and Alzheimer’s disease.

Research has recently shown that healthy older adults have an impaired capacity to resist oxidative damage after exposure to an acute stress compared with young adults.  This impairment may account for the greater morbidity and mortality of older adults compared with young adults during trauma, infections, or surgery, as well as their increased susceptibility to cardiovascular and neurodegenerative disease.   Acute stress increases production of reactive oxygen species and frequently occurs in acute events that afflict older adults such as trauma, cardiovascular disease, and surgery.

The antioxidative capacity of older adults appears to be sufficient to maintain homeostasis in non-stressed conditions, but insufficient to cope with a substantial oxidative challenge. Therefore, identifying interventions that improve resistance to oxidative damage during an acute challenge might be of great potential value in decreasing morbidity and mortality in older adults, even if these interventions do not affect basal levels of oxidation.

It has been proposed that the antioxidant activities of fruits and vegetables come from the additive and synergistic effects of their phytonutrients and that isolated dietary supplements do not exhibit these same benefits.  Therefore, an intervention that would provide a natural blend of phytonutrients lead to Tart cherries which have high levels of antioxidants in the form of phenolic compounds and anthocyanins.  Diets rich in polyphenols, especially anthocyanins, have been shown to increase resistance to oxidation in research models.

Because anthocyanins can activate xenobiotic responses, including expression of a plethora of antioxidant response genes, it is hypothesized that increasing the dietary intake of diverse antioxidants, such as those contained in tart cherry juice, would increase resistance to oxidative damage after an acute stress, an effect that could potentially dramatically improve resistance to morbidity and mortality in older adults.

The conclusion of the data from a placebo-controlled, crossover study demonstrated that a dietary antioxidant intervention through consumption of tart cherry juice improves antioxidant defenses in vivo in older adults as shown by an increased capacity to resist oxidative damage after an acute stress and reduced oxidative damage to nucleic acids. The results also highlighted the observation that various markers of oxidative damage may reflect different mechanisms of resistance to oxidative damage.

 

References:   The Journal of Nutritionhttp://jn.nutrition.org
published online August 19, 2009; doi:10.3945/jn.109.111716
research study conducted –
Kronos Longevity Research Institute, Phoenix, AZ; 5Kronos Science Laboratory, Phoenix, AZ 85016; and Vanderbilt University School of Medicine, Nashville, TN 37232

Glutathione: Levels for Health, Strength & Optimal Performance

anti-aging, Fitness, Free Radicals, nutrition, performance, Recovery - Repair | Posted by admin March 30th, 2011

Glutathione is the master anti-oxidant in the body which supports health, enhances tissue and muscle repair,increases strength & endurance and slows the aging of cells.

What can reducing the oxidative process on the body mean for the athlete?

Many world-class athletes are discovering the importance of glutathione, which when maintained, gives them the edge over the competition. Increased glutathione levels provides athletes with increased strength and endurance, decreased recovery time from injury, less pain and fatigue and possibly an increase in muscle-promoting activities. During workouts, athletes generate free radicals which in turn lead to muscle fatigue and poorer performance. Glutathione neutralizes these radicals and allows our bodies to recover faster. Recent research indicates that the body has a natural tendency toward many degenerative diseases and aging itself. Some believe how well the body can protect itself from damage and recover from oxidative damage can be determined by measuring the intracellular stores of Glutathione.

Dietary Choices are the Key

Tumeric:

Scientists have long been aware of the wide array of health benefits from the Indian spice turmeric, which is a source of the active phytochemical curcumin. This bioactive substance of Turmeric (Curcuma Longa) contains “Curcuminoids” and Curcumin is the most important molecule. Research has shown its tremendous health benefit. Antioxidants have received increased attention, and it’s important to know what nutrients are antioxidants, and information about them. One such nutrient is curcumin.  Curcumin is a natural extract from the spice turmeric. Turmeric is derived from the plant Curcuma Longa, a member of the ginger family. Curcumin is employed mostly as an antioxidant; though it was traditionally used to promote stomach and joint comfort. The immune-balancing activity of curcumin has been demonstrated through multiple mechanisms to support normal COX-2 and NF-KappaB levels in the body. The neuroprotective properties of curcumin are among the most studied. Curcumin has been designated as a ‘strong candidate’ for the promotion of neurological health and cognitive function. Curcumin can cross the blood-brain barrier and support the normal uptake of amyloid-beta in the brain. This supports the brain’s memory and learning abilities as we age. Another neuroprotective property of curcumin is its ability to promote normal levels of glutathione, superoxide dismutase and catalase in the brain. This can help to maintain the health of neurological tissues. Curcumin supports the normal production of Phase II liver detoxification enzymes, including glutathione synthase, heme-oxygenase and catalase. The liver plays several roles in detoxification: it filters the blood to remove large toxins, synthesizes and secretes bile full of cholesterol and other fat-soluble toxins, and enzymatically disassembles unwanted chemicals. This enzymatic process usually occurs in two steps referred to as phase I and phase II. They promote the body’s natural enzyme antioxidant defense systems and function as a powerful indirect antioxidant. These enzymes promote the body’s normal metabolism of harmful chemicals such as heavy metals, toxins and pollutants into less reactive molecules. Curcumin has also been shown to promote normal hepatic tissue repair.

Broccoli:

The health benefits and protective properties of broccoli and other cruciferous vegetables have been well documented over the past 25 years. Broccoli is a potent source of sulphoraphane glucosinolates. Sulforaphanes support the normal production of Phase II liver detoxification enzymes, including glutathione synthase, heme-oxygenase and catalase. Sulphoraphanes promote the body’s natural enzyme antioxidant defense systems and function as a powerful indirect antioxidant. Sulphoraphanes work to support gene transcription, which is the process by which genetic information is copied from DNA to RNA, resulting in a specific protein formation. Conclusively, sulphoraphanes work to support the body’s natural defense systems and to maintain elevated levels of glutathione.

Glutathione is the master antioxidant of the body. It is an important chemical that acts as a powerful antioxidant to preserve and protect the brain and other body tissues by protecting them from the damage of free radicals. It also acts to recycle vitamin C & E which also reduce free radicals. Since glutathione cannot be absorbed intact orally due to gastrointestinal degradation, sulphoraphanes may be the most effective way to increase endogenous glutathione concentration.

Selenium:

Selenium is a required cofactor for selenoproteins such as glutathione peroxidase.  Selenomethionine is incorporated directly into proteins because selenomethionine cannot be distinguished from methionine during the translation of mRNA into protein. This serves as a storage form of selenium and is liberated upon protein catabolism. Selenium accumulates in the prostate, promoting the health of the prostate. Selenium supports immune function by promoting normal growth and development of T helper cells.  Selenium is naturally found in walnuts, brazil nuts, seafood, tuna, beef, spaghetti, turkey, eggs, oatmeal, rice, noodles and several types of cheese.

Natural Anti-Inflammatory – Cherries & Exercise Muscle Pain

Free Radicals, nutrition, performance, Recovery - Repair | Posted by admin December 30th, 2010

Drinking cherry juice could help ease the pain for people who run, according to new research from Oregon Health & Science University presented at the American College of Sports Medicine Conference in Seattle, Wash. The study showed people who drank tart cherry juice while training for a long distance run reported significantly less pain after exercise than those who didn’t. Post-exercise pain can often indicate muscle damage or debilitating injuries.

In the study of sixty healthy adults aged 18-50 years, those who drank 10.5 ounces cherry juice (100% tart cherry juice) twice a day for seven days prior to and on the day of a long-distance relay had significantly less muscle pain following the race than those who drank another fruit juice beverage. On a scale from 0 to 10, the runners who drank cherry juice as their “sports drink” had a 2 point lower self-reported pain level at the completion of the race, a clinically significant difference. While more research is needed to fully understand the effects of tart cherry juice, researchers say the early finding indicate cherries may work like common medications used by runners to alleviate post-exercise inflammation. “For most runners, post-race treatment consists of RICE (rest, ice, compression and elevation) and traditional NSAIDS (non-steroidal anti-inflammatory drugs),” said Kerry Kuehl, M.D., a sports medicine physician and principal study investigator. “But NSAIDS can have adverse effects – negative effects you may be able to avoid by using a natural, whole food alternative, like cherry juice, to reduce muscle inflammation before exercise.”

The researchers suggest cherries’ post-exercise benefits are likely because of the fruit’s natural anti-inflammation power – attributed to antioxidant compounds called anthocyanins, which also give cherries their bright red color. Whether elite athletes or weekend warriors, this natural anti-inflammation power of cherry juice could have far-reaching benefits for the millions of active Americans currently taking over-the-counter pain medications to reduce muscle pain and beyond. A growing body of research suggests cherries could affect inflammation related to heart disease, arthritis and may even help maintain muscle strength for those suffering from fibromyalgia (a common, chronic widespread pain disorder), according to a second study presented by the same researchers at the ACSM conference.

It’s Easy to Enjoy “America’s Super Fruit” Cherries are not only good for you, but they’re also a homegrown “Super Fruit.” According to recent data, more than 9 out of 10 Americans want to know where their food comes from, nearly 80 percent say they’re purchasing “locally produced” products, and the majority are defining “local” as made in America. This homegrown advantage, coupled with potential health benefits for athletes, make cherries “America’s Super Fruit.” Tart cherries come in dried, frozen and juice forms so they’re readily available to enjoy all year long.

Kuehl KS, Chestnutt J, Elliot DL, Lilley C. Efficacy of tart cherry juice in reducing muscle pain after strenuous exercise. American College of Sports Medicine. 851. May, 2009.

Jones KD, Elliot DL, Kuehl KS, Dulacki K. Tart cherry juice for fibromyalgia: new testing paradigm and subgroup benefits. American College of Sports Medicine. 852. May, 2009.

Surveys conducted IRI Data and The Hartman Group, 2008 Source:
Caitlin Solway
Weber Shandwick Worldwide

Nutrition & Sports: The Keys to Optimal Performance

Fitness, nutrition, performance, Recovery - Repair | Posted by admin November 28th, 2010

All athletes strive to compete at the top of their game but, unbeknownst to many of them, their performance relies on their nutritional status.  Athletes with inadequate diets and unaware of  their specific metabolic rates may have insufficient fuel for workouts, nutrient deficiencies that can lead to illness or fatigue, a decrement in bone growth and maintenance, and may not reach their potential for muscle growth. All of these will be reflected in their performance, regardless of their determination.

Despite this recognition young athletes need to pay greater attention to their fuel consumption, recent research suggests that many youths struggle with energy balance, experiencing an energy deficit or surplus. We are all too familiar with this energy surplus, known as overweight or obesity, but that crisis is not the focus here.  The concern is many young athletes require greater amounts of nutrients but remain uninformed or unconcerned about their nutrition needs or simply feel powerless to improve their nutritional status. Young athletes need help to overcome these problems.

The number of young athletes in the United States is increasing and estimates are that approximately 30 to 45 million youths aged 6 to 18 participate in some form of athletics. These young athletes turn to coaches, parents, teammates, and health professionals for nutrition guidance. They can guide athletes to be leaner, stronger, and able to withstand the rigors of training and competition. They can offer superior advice because they are more cognizant of research findings and are equipped with clinical and counseling skills to aid in a young athlete’s quest for improvement. By helping athletes improve their diet, they can eliminate obstacles to better health and nutrition and thereby help athletes push their limits and reach their full potential.

Nutrition professionals can aid young athletes in their quest for victory by recognizing that children and adolescents generally need more calories and protein per pound of body weight than many adults. It is a well-known fact that children need this extra energy to grow, fully develop, and thrive. Nutrient needs further elevate and reach their peak during adolescence. Potential differences in nutrition needs between a typical child or adolescent and an athletic child or adolescent likely exist.  Not all nutitional needs and metabolic rates are alike.  New studies of energy balance in young athletes have been published, and conservative recommendations have been made. But self-reported diet records of young athletes often indicate that intake of energy, carbohydrate, and select micronutrients may be below recommended levels. They must be aware that these deficiencies exist and are especially apparent in athletes involved in sports that focus on body composition and appearance, but lack awareness for influences on strength and endurance.

Residual nutritional levels of macro & micronutrients can now be measured by new science based technology.  Measurements are based on an individual’s residual levels measured at the cellular level where cell replications occur and these data are compared in a moving average data base of more than 500,000 others.  This results in comparing and documenting an individuals residual storage levels inside their body. Adjustments in nutrition and supplementation can be made on an individual’s real needs based on their metabolic rates instead of assuming all athletes burn at the same rate. Welcome to the next generation of athletic training by benchmarking and addressing nutritional deficiences for optimizing training & performance.

Contact for details.

Vitamin D – Maintains Health & Athletic Performance . . .

Fitness, performance, Recovery - Repair | Posted by admin April 16th, 2010

Vitamin D is an often overlooked nutritional element in athletic achievement, a sleeper nutrient, says John Anderson, a professor emeritus of nutrition at the University of North Carolina regarding Vitamin D and athletic performance. Vitamin D once was thought to be primarily involved in bone development. But a growing body of research suggests that it’s vital in multiple different bodily functions, including allowing body cells to utilize calcium (which is essential for cell metabolism), muscle fibers to develop and grow normally, and the immune system to function properly. Almost every cell in the body has receptors for Vitamin D, Anderson says.  It can up-regulate and down-regulate hundreds, maybe even thousands of genes.   D. Enette Larson-Meyer, an assistant professor in the Department of Family and Consumer Sciences at the University of Wyoming says we’re only at the start of understanding how important it is.

But many of us, it seems, no matter how active and scrupulous we are about health, don’t get enough Vitamin D. Nowadays, many people aren’t going outside very much and most of us assiduously apply sunscreen and take other precautions when we do.

Meanwhile, dietary sources of Vitamin D are meager. Cod-liver oil provides a whopping dose. But a glass of fortified milk provides a fraction of what scientists now think we need per day. A study published online in the journal Pediatrics in 2009 concluded that more than 60 percent of American children, or almost 51 million kids, have insufficient levels of Vitamin D and another 9 percent, or 7.6 million children, are clinically deficient, a serious condition. Cases of childhood rickets, a bone disease caused by lack of Vitamin D, have been rising in the U.S. in recent years.

Although few studies have looked closely at the issue of Vitamin D and athletic performance, those that have are suggestive. A series of strange but evocative studies undertaken decades ago in Russia and Germany, for instance, hint that the Eastern Bloc nations may have depended in part on sunlamps and Vitamin D to produce their preternaturally well-muscled and world-beating athletes. In one of the studies, four Russian sprinters were doused with artificial, ultraviolet light. Another group wasn’t. Both trained identically for the 100-meter dash. The control group lowered their sprint times by 1.7 percent. The radiated runners, by comparison, improved by an impressive 7.4 percent.

More recently, when researchers tested the vertical jumping ability of a small group of adolescent athletes, Larson-Meyer says, they found that those who had the lowest levels of Vitamin D tended not to jump as high, intimating that too little of the nutrient may impair muscle power. Low levels might also contribute to sports injuries, in part because Vitamin D is so important for bone and muscle health. In a Creighton University study of female naval recruits, stress fractures were reduced significantly after the women started taking supplements of Vitamin D and calcium.

Recent studies have shown that, among athletes who train outside year-round, maximal oxygen intake tends to be highest in late summer. The athletes, in other words, are fittest in August, when ultraviolet radiation from the sun is near its zenith. They often then experience an abrupt drop in maximal oxygen intake, beginning as early as September, even though they continue to train just as hard. This decline coincides with the autumnal lengthening of the angle of sunlight. Less ultraviolet radiation reaches the earth and, apparently, sports performance suffers.

Can Vitamin D Improve Athletic Performance?

The active form of vitamin D is a steroid (actually a secosteroid) in the same way that testosterone is a steroid. It is also a hormone (hormone: Greek, meaning: to set in motion) in the same way that growth hormone is a hormone. Steroid hormones are substances made from cholesterol that circulate in the body and work at distant sites by setting in motion genetic protein transcription. That is, both vitamin D and testosterone set in motion your genome, the stuff of life. While testosterone is a sex steroid hormone, vitamin D is a pleomorphic steroid hormone.

If you are vitamin D deficient, the medical literature indicates that the right amount of vitamin D will make you faster, stronger, improve your balance and timing, etc. How much it will improve your athletic ability depends on how deficient you are to begin with. How good an athlete you will be depends on your innate ability, training, and dedication?

However, peak athletic performance also depends upon the neuromuscular cells in your body and brain having unfettered access to the steroid hormone, activated vitamin D. How much activated vitamin D is available to your brain, muscle, and nerves depends on the amount of 25-hydroxyvitamin D in your residual stores. In turn, how much 25-hydroxyvitamin D is in your residual stores depends on how much vitamin D you put in your mouth or how often you expose your skin to UVB light?

References: 

The New York Times, Health – Fitness & Nutrition, 09/23/2009
Vitamin D Council: http://www.vitamindcouncil.org

We support Prevention vs Prescriptions:
GoTo: Prevention not Prescriptions

CoQ10 – Reduce Muscle Injuries for Athletes?

performance, Recovery - Repair | Posted by admin January 5th, 2010

Marker levels associated with increased wear and tear in the muscle, like creatine kinase and lipid peroxide, were significantly lower in elite Japanese kendo athletes after consuming co-enzyme Q10 for 20 days, compared to placebo.

Researchers from University of Tsukuba, University of Tokyo, and Kobe Gakuin University report their findings in the British Journal of Nutrition.

The study adds to an ever growing body of studies supporting the benefits of the coenzyme for sports nutrition. Only recently, another Japanese group reported that CoQ10 supplements may boost physical performance and reduce feelings of tiredness associated with exercise (Nutrition, doi:10.1016/j.nut.2007.12.007).

CoQ10 has properties similar to vitamins, but since it is naturally synthesized in the body it is not classed as a vitamin. With chemical structure 2,3-dimethoxy-5-methyl-6-decaprenyl-1,4-benzoquinone, it is also known as ubiquinone because of its ‘ubiquitous’ distribution throughout the human body.

The level of CoQ10 produced by the body begins to drop after the age of about 20, and the coenzyme is concentrated in the mitochondria – the ‘power plant’ of body cells. It plays a vital role in the production of chemical energy by participating in the production of adenosince triphosphate (ATP), the body’s so-called ‘energy currency’.

Beyond it’s participation with mitochondria CoQ10 acts as a potent antioxidant. The coenzyme plays an important role in preserving levels of vitamin E and vitamin C.

kendo athletic study

Michihiro Kon and co-workers recruited 18 elite Japanese kendo student athletes and randomly assigned them to receive daily supplements of CoQ10 (300 mg) or placebo for 20 days. The study was double-blind, meaning neither volunteers nor researchers knew who was receiving the active or placebo dose. The volunteers had daily training sessions of five and a half hours per day for six days during the intervention period. At day three and five of the six day training period, the researchers report that both groups experienced increased in serum creatine kinase activity and the concentration of myoglobin, but these increases were significantly lower in the group receiving the CoQ10 supplements.

Creatine kinase is an enzyme that catalyses the conversion of creatine to phosphocreatine, in the process consuming adenosine triphosphate (ATP) and generating adenosine diphosphate (ADP). Elevated levels of the enzyme are indicative of muscle damage and injury. Moreover, levels of lipid peroxide, a marker of oxidative stress, were also lower in the CoQ10 group after three and five days of training, said the researchers.

“These results indicate that CoQ10 supplementation reduced exercise-induced muscular injury in athletes”

Mechanism

The underlying mechanism appears to be due to the antioxidant potential of the coenzyme, suggest the researchers, although further research is necessary to confirm these findings.

Source: British Journal of Nutrition
“Reducing exercise-induced muscular injury in kendo athletes with supplementation of coenzyme Q10”
Authors: M. Kon, K. Tanabe, T. Akimoto, F. Kimura, Y. Tanimura, K. Shimizu, T. Okamoto, I. Kono

Nutrition – Athletic Performance – Enhances Injury Recovery

nutrition, performance, Recovery - Repair | Posted by admin December 7th, 2009

Scholastic, professional, and recreational athletes may be surprised to learn that nutrition can play a major role in enhancing both performance and the healing of sports injuries.

While ice packs, bandages, rest, and physical therapy are significant in both the short and long-term treatment of injuries such as sprains, strains, cuts and bruises, swelling, and broken bones, researchers are discovering that what an athlete consumes after injury and during the treatment phase can either promote recovery or sometimes delay healing.

The nutrition can not only affect injury rehabilitation positively or negatively, but also aid or hinder the recovery of general and / or chronic muscle or joint soreness following intense exercise workouts, practices, and games. Anti-inflammatory foods and beverages can contribute to the healing of sports injuries are also excellent for post workout / post practice / post game muscle and joint recovery.

The following foods and beverages that have anti-inflammatory qualities and may even accelerate recovery from sports-related or non-athletic injuries:

Grapes, blueberries, strawberries, oranges, kiwis, olive oil, celery, ginger, garlic, curry powder, eggplant, nuts, tuna, salmon, mackerel, black and green tea, and red wine and beer (only when consumed in moderation with food and no more than two alcoholic drinks per day).
Foods rich in vitamin C (citrus fruits, strawberries, kiwis, peppers) and vitamin E (nuts, olive oil) have anti-inflammatory effects. Omega-3 rich fish oil and fatty salt-water fish (salmon, tuna, mackerel) also fight inflammation, besides the wide-spread publicity in recent years of such fish benefiting both heart and brain health.

Another food that has been shown to reduce inflammation is the herb turmeric which is an even better anti-inflammatory than cortisone, one of the most powerful of the steroids.”

Curcumin is found in curry powder, another anti-inflammatory source. Athletes and non-athletes alike who experience chronic shoulder, back and knee pain, for example, may take note of curcumin’s powerful role in easing inflammation.

Another wonderful anti-inflammatory food is eggplant which “contains the important mineral potassium, as well as phytochemicals that have antihistaminic, anti-inflammatory and antioxidant qualities.”

To reduce inflammation, athletes and non-athletes must focus on the #1 beverage: drink ample amounts of plain water in practices and games, both in solid form (when ice packs are applied immediately following an injury to prevent inflammation such as swelling) and in liquid form to hasten recovery during injury rehabilitation as well as help heal chronic joint and back pain.

While water might be king beverage on and off the athletic field, athletes and non-athletes should take advantage of the possible anti-inflammatory capacity of another bodybuilding beverage: milk.
Athletes and non-athletes should also monitor their protein intake and note that high-protein diets boost inflammation.

Another area in which nutrition affects inflammation is overeating or consuming excess calories contributing to either obesity or simply becoming overweight with more body fat than lean muscle.
In general, what an athlete consumes in the hours, days and weeks following an injury may indeed determine how fast he or she returns to action. Some foods and beverages can prevent or reduce inflammation, thus speeding the healing process.

To help the athlete on a quicker road to recovery, some simple anti-inflammatory meals may be just what the doctor ordered.

We support Prevention vs Prescriptions:
GoTo: Prevention not Prescriptions

Importance of Magnesium – Prevents Health Risks

nutrition, performance | Posted by admin November 6th, 2009

Most people are aware of the importance of getting enough calcium, which remains a widespread problem. Most people don’t know there are other common micronutrient deficiencies that need to be addressed. Magnesium is one of those important micronutrients that doesn’t seem to get much attention, but plays a huge role in the body promoting health & performance.

Unfortunately the diets of all Americans are likely to be deficient and they don’t even know it. Sources estimate that nearly 70 percent of Americans get inadequate doses of magnesium every day and do not consume the daily recommended amounts of Magnesium. Studies have also shown food alone can’t meet the minimal Recommended Daily Allowances (RDA) micronutrient requirements for preventing nutrient-deficiency diseases. For several years experts have suggested that the availability of magnesium in the soil has significantly decreased and it is difficult to get the amount of magnesium needed to function at an optimal level. This, in combination with diets low in whole grains and fresh fruits and vegetables, has led to a general deficiency in the population.

Magnesium is used for more than 300 bodily functions and assists in energy production, maintains healthy bone density and aids the electrical conduction of the heart. Magnesium belongs in a category of minerals called electrolytes because they conduct electrical signals in the body. It is needed in energy metabolism, glucose utilization, protein synthesis, fatty acid synthesis and breakdown, muscle contraction, all ATPase functions, for almost all hormonal reactions, and in the maintenance of cellular ionic balance. It is found in all of the body’s cells, although it is mostly concentrated in the bones, muscles, and soft tissues. Magnesium also affects calcium’s role in homeostasis through two mechanisms.

Magnesium deficiency results in altered cardiovascular function, including electrocardiographic abnormalities, impaired carbohydrate metabolism, with insulin resistance and decreased insulin secretion, and high blood pressure. Even a mild deficiency causes sensitiveness to noise, nervousness, irritability, mental depression, confusion, twitching, trembling, apprehension, insomnia, muscle weakness and cramps in the toes, feet, legs, or fingers.

In active adults and athletes low magnesium levels can acutely contribute to early fatigue, nausea, muscle cramps & an irregular heartbeat during exercise. Magnesium as well as zinc, chromium and selenium are excreted in the sweat or as part of the process of metabolic acceleration. Heavy sweat loss can interfere with the important functions for which magnesium and other electrolytes are responsible. Also, the rate of magnesium loss is increased in conditions of high humidity and high temperature. An important consideration for athletes is the rate of magnesium loss that occurs during heavy physical activity. Heavy exercise makes you lose magnesium in the urine and scientific evidence suggests this is why long distance runners may suddenly drop dead with heart arrhythmias.

In a very tightly controlled three-month US study carried out last year, the effects of magnesium depletion on exercise performance in 10 women were observed. In the first month, the women received a magnesium-deficient diet (112mgs per day), which was supplemented with 200mgs per day of magnesium to bring the total magnesium content up to the RDA of 310mgs per day. In the second month, the supplement was withdrawn to make the diet magnesium-deficient, but in the third month it was reintroduced to replenish magnesium levels.

At the end of each month, the women were asked to cycle at increasing intensities until they reached 80% of their maximum heart rate, at which time a large number of measurements were taken, including blood tests, ECG and respiratory gas analysis.

The researchers found that, for a given workload, peak oxygen uptake, total and cumulative net oxygen utilization and heart rate all increased significantly during the period of magnesium restriction, with the amount of the increase directly related to the extent of magnesium depletion. In plain English, a magnesium deficiency reduced metabolic efficiency, increasing the oxygen consumption and heart rate required to perform work – exactly what an athlete doesn’t want!

No serious athlete or trainer can afford to overlook the benefits that magnesium brings to athletic performance and the recovery process. Research suggests that even a small shortfall in magnesium can lead to greatly reduced performance and stamina. Many athletic medical specialists believe that magnesium is the single most important mineral to sports nutrition. Not only does it help optimize an athlete’s performance, but it speeds up recovery from fatigue and injuries.

Optimal muscle contraction and relaxation is the foundation of an athlete’s performance. Proper magnesium levels are required for muscles to relax fully following a contraction. Some doctors believe that injuries to hamstring muscles can be partially avoided through intake of magnesium and stated that a shortened hamstring is a result of lack of available magnesium.

The first step is to eat more magnesium rich foods, especially beans, nuts and vegetables. The more active a person is the greater the need to make sure there is a variety of balanced micronutrient-enriched foods into their diet. The challenge is to eat large amounts of magnesium-rich foods on a consistent basis. Often this proves difficult and unrealistic, as an athlete’s requirement of magnesium intake far surpasses that of an average person. Micronutrient supplementation still may be needed to be incorporated into their wellness program as a preventative protocol for preventing these observed deficiencies.

Another important step is to have your levels checked. The residual level of magnesium in the cells is what’s important. The body does all it can to keep the blood levels normal, so if there is a body deficit, it will be found within the cells. Work with a practitioner that will check your RBC-magnesium level (the level of magnesium in red blood cells) or provide an FIA (functional intracellular analysis) for your body’s residual nutrient levels that will benchmark your cell level status to find the amount of supplements needed to achieve normal levels. Recommended intake for endurance athletes is 500 to 800 mg daily.

There is virtually no one that cannot benefit greatly from increasing daily magnesium intake. In terms of health and longevity magnesium is essential. For the professional athlete it means the difference between winning and losing, and in some cases, living and dying.

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