Bookmark Website  | Free Registration  | The Team
The Lounge  | Champions  | The Wire |  Schedule |  Audio  |  Arcade  |  The Top Ten  |  Historical  |  Email  |  Video

Creatine: More than a Sports Nutrition Supplement


Although creatine offers an array of benefits, most people think of it simply as a supplement that bodybuilders and other athletes use to gain strength and muscle mass. Nothing could be further from the truth.

A substantial body of research has found that creatine may have a wide variety of uses. In fact, creatine is being studied as a supplement that may help with diseases affecting the neuromuscular system, such as muscular dystrophy (MD).

Recent studies suggest creatine may have therapeutic applications in aging populations for wasting syndromes, muscle atrophy, fatigue, gyrate atrophy, Parkinson's disease, Huntington's disease and other brain pathologies. Several studies have shown creatine can reduce cholesterol by up to 15% and it has been used to correct certain inborn errors of metabolism, such as in people born without the enzyme(s) responsible for making creatine.

Some studies have found that creatine may increase growth hormone production.

What is creatine?

Creatine is formed in the human body from the amino acids methionine, glycine and arginine. The average person's body contains approximately 120 grams of creatine stored as creatine phosphate. Certain foods such as beef, herring and salmon, are fairly high in creatine.

However, a person would have to eat pounds of these foods daily to equal what can be obtained in one teaspoon of powdered creatine.

Creatine is directly related to adenosine triphosphate (ATP). ATP is formed in the powerhouses of the cell, the mitochondria. ATP is often referred to as the "universal energy molecule" used by every cell in our bodies. An increase in oxidative stress coupled with a cell's inability to produce essential energy molecules such as ATP, is a hallmark of the aging cell and is found in many disease states.

Key factors in maintaining health are the ability to: (a) prevent mitochondrial damage to DNA caused by reactive oxygen species (ROS) and (b) prevent the decline in ATP synthesis, which reduces whole body ATP levels. It would appear that maintaining antioxidant status (in particular intra-cellular glutathione) and ATP levels are essential in fighting the aging process.

It is interesting to note that many of the most promising anti-aging nutrients such as CoQ10, NAD, acetyl-l-carnitine and lipoic acid are all taken to maintain the ability of the mitochondria to produce high energy compounds such as ATP and reduce oxidative stress.

The ability of a cell to do work is directly related to its ATP status and the health of the mitochondria. Heart tissue, neurons in the brain and other highly active tissues are very sensitive to this system. Even small changes in ATP can have profound effects on the tissues' ability to function properly.

Of all the nutritional supplements available to us currently, creatine appears to be the most effective for maintaining or raising ATP levels.

How does creatine work?

In a nutshell, creatine works to help generate energy. When ATP loses a phosphate molecule and becomes adenosine diphosphate (ADP), it must be converted back to ATP to produce energy. Creatine is stored in the human body as creatine phosphate (CP) also called phosphocreatine.

When ATP is depleted, it can be recharged by CP. That is, CP donates a phosphate molecule to the ADP, making it ATP again. An increased pool of CP means faster and greater recharging of ATP, which means more work can be performed.

This is why creatine has been so successful for athletes. For short-duration explosive sports, such as sprinting, weight lifting and other anaerobic endeavors, ATP is the energy system used.

To date, research has shown that ingesting creatine can increase the total body pool of CP which leads to greater generation of energy for anaerobic forms of exercise, such as weight training and sprinting. Other effects of creatine may be increases in protein synthesis and increased cell hydration.

Creatine has had spotty results in affecting performance in endurance sports such as swimming, rowing and long distance running, with some studies showing no positive effects on performance in endurance athletes.

Whether or not the failure of creatine to improve performance in endurance athletes was due to the nature of the sport or the design of the studies is still being debated.

Creatine can be found in the form of creatine monohydrate, creatine citrate, creatine phosphate, creatine-magnesium chelate and even liquid versions.

However, the vast majority of research to date showing creatine to have positive effects on pathologies, muscle mass and performance used the monohydrate form. Creatine monohydrate is over 90% absorbable. What follows is a review of some of the more interesting and promising research studies with creatine.

Creatine and neuromuscular diseases

One of the most promising areas of research with creatine is its effect on neuromuscular diseases such as MD. One study looked at the safety and efficacy of creatine monohydrate in various types of muscular dystrophies using a double blind, crossover trial.

Thirty-six patients (12 patients with facioscapulohumeral dystrophy, 10 patients with Becker dystrophy, eight patients with Duchenne dystrophy and six patients with sarcoglycan-deficient limb girdle muscular dystrophy) were randomized to receive creatine or placebo for eight weeks.

The researchers found there was a "mild but significant improvement" in muscle strength in all groups. The study also found a general improvement in the patients' daily-life activities as demonstrated by improved scores in the Medical Research Council scales and the Neuromuscular Symptom scale. Creatine was well tolerated throughout the study period, according to the researchers.1

Another group of researchers fed creatine monohydrate to people with neuromuscular disease at 10 grams per day for five days, then reduced the dose to 5 grams per day for five days.

The first study used 81 people and was followed by a single-blinded study of 21 people.

In both studies, body weight, handgrip, dorsiflexion and knee extensor strength were measured before and after treatment. The researchers found "Creatine administration increased all measured indices in both studies." Short-term creatine monohydrate increased high-intensity strength significantly in patients with neuromuscular disease.2

There have also been many clinical observations by physicians that creatine improves the strength, functionality and symptomology of people with various diseases of the neuromuscular system.

Creatine and neurological protection/brain injury

If there is one place creatine really shines, it's in protecting the brain from various forms of neurological injury and stress. A growing number of studies have found that creatine can protect the brain from neurotoxic agents, certain forms of injury and other insults.

Several in vitro studies found that neurons exposed to either glutamate or beta-amyloid (both highly toxic to neurons and involved in various neurological diseases) were protected when exposed to creatine.3 The researchers hypothesized that "? cells supplemented with the precursor creatine make more phosphocreatine (PCr) and create larger energy reserves with consequent neuroprotection against stressors."

More recent studies, in vitro and in vivo in animals, have found creatine to be highly neuroprotective against other neurotoxic agents such as N-methyl-D-aspartate (NMDA) and malonate.4 Another study found that feeding rats creatine helped protect them against tetrahydropyridine (MPTP), which produces parkinsonism in animals through impaired energy production.

The results were impressive enough for these researchers to conclude, "These results further implicate metabolic dysfunction in MPTP neurotoxicity and suggest a novel therapeutic approach, which may have applicability in Parkinson's disease."5 Other studies have found creatine protected neurons from ischemic (low oxygen) damage as is often seen after strokes or injuries.6

Yet more studies have found creatine may play a therapeutic and or protective role in Huntington's disease7, 8 as well as ALS (amyotrophic lateral sclerosis).9 This study found that "? oral administration of creatine produced a dose-dependent improvement in motor performance and extended survival in G93A transgenic mice, and it protected mice from loss of both motor neurons and substantia nigra neurons at 120 days of age.

Creatine administration protected G93A transgenic mice from increases in biochemical indices of oxidative damage. Therefore, creatine administration may be a new therapeutic strategy for ALS." Amazingly, this is only the tip of the iceberg showing creatine may have therapeutic uses for a wide range of neurological disease as well as injuries to the brain.

One researcher who has looked at the effects of creatine commented, "This food supplement may provide clues to the mechanisms responsible for neuronal loss after traumatic brain injury and may find use as a neuroprotective agent against acute and delayed neurodegenerative processes."

Creatine and heart function

Because it is known that heart cells are dependent on adequate levels of ATP to function properly, and that cardiac creatine levels are depressed in chronic heart failure, researchers have looked at supplemental creatine to improve heart function and overall symptomology in certain forms of heart disease.

It is well known that people suffering from chronic heart failure have limited endurance, strength and tire easily, which greatly limits their ability to function in everyday life. Using a double blind, placebo-controlled design, 17 patients aged 43 to 70 years with an ejection fraction


MORE RESOURCES:

PsychCentral.com (blog)

The Skinny Behind Weight-Loss Supplements
PsychCentral.com (blog)
Individuals looking to lose weight find that diet supplements often seem like a magic solution. The makers of diet pills make extravagant claims about the properties of their drugs, yet many of the claims aren't supported by research. Actually, the ...



What They Think

Dietary Supplements Meet Digital Printing at Labels in Motion, Courtesy of Xeikon
What They Think
Ever since the Dietary Supplement Health and Education Act of 1994 liberalized rules governing how dietary supplements and nutraceuticals could be marketed, there has been no stopping the galloping growth of the industry that manufactures and ...



New York Daily News

Running Doc: Developing a supplement plan
New York Daily News
We all know supplements can in fact optimize performance. All of this is best evaluated by your sports doc and nutritionist who have thoroughly evaluated your eating patterns and needs for sport performance. I usually start with a blood panel and then ...



Kankakee Daily Journal

Ecumencical service supplements nutritional needs
Kankakee Daily Journal
Rev. Robert Bushey prays about the offering during the Ecumenical Thanksgiving Worship service sponsored by the River Valley Clergy Alliance and held at St. Paul's Episcopal Church in Kankakee Sunday afternoon. Buy this photo ...

and more »


Youth Health Magzine

Safe Use of Dietary supplements- NCCAM
Youth Health Magzine
With the variety of dietary supplement choices available in the market, it can be difficult to distinguish which ones stay true to their health claims. According to the National Center for Complementary and Alternative Medicine (NCCAM), although the ...



Top 5 Supplements Men Need to Survive the Holiday Season
Huffington Post Canada
Probably the best-known nutritional supplement, Vitamin C has a tremendous range of health benefits for men. As one of the most versatile and potent antioxidants, Vitamin C literally slows down the rusting processes (oxidation) that lead to ...



Fox News

9 things to know before buying another supplement
Fox News
The supplement aisle at the drug store is lined with products that promise to prevent illness, improve energy, boost metabolism, even brighten your skin. You probably already know these capsules aren't necessarily silver bullets to perfect health ...



Which supplements are snake oil, and which are solid?
MedCity News
People pop prescription pills with an air of caution, but many look at supplements in a different light: They're icing on the cake, and who knows? Maybe that echinacea will cure Ebola after all. But many supplements can actually be pretty bad for you ...



KTIC

Vitamin D Supplements May Not Be for Everyone
KTIC
Patients with kidney disease or bone disease, as well as elderly patients, should still take vitamin D supplements if instructed to do so by their doctor, the study said. However, researchers believe that many people may not stand to benefit from ...
Why vitamin D pills are probably worthless for most peopleVox
Vitamin D Tests Aren't Needed For Everyone, Federal Panel SaysNPR (blog)

all 72 news articles »


Food Poisoning Bulletin

Mixing Medications and Dietary Supplements Can Endanger Your Health
FDA.gov
When you take prescription or over-the-counter (OTC) medications, do you take also a vitamin, mineral, or other dietary supplements? Have you considered whether there is any danger in mixing medications and dietary supplements? There could be, says ...
Mixing Dietary Supplements and Meds Is a DangerFood Poisoning Bulletin
Medications, Dietary Supplements Potentially Dangerous Mix, FDA SaysNatural Products INSIDER
Mixing Medication and Dietary Supplements Can be Bad for HealthTestCountry.com (blog)

all 4 news articles »

Google News


Advertisement



Section Site Map - Submit News - Feedback - Comments - Advertise with Us

Copyright © 2006 Luminati Inc. All rights reserved.