Apr
19
2014

Measuring Your Heart Function

By | Anti-aging medicine, Fitness, heart attack, Heart Disease, Nutrition, Prevention, Stroke

Recently I came across a book by Dr. Steven Masley, cardiologist (fellow of the American Heart Association, see Ref.1). The heart’s function is to pump your blood reliably all your life. It is a complicated organ, but it works well, if we treat it well. Western medicine has taught us that with complicated machinery and tests we can assess how the heart is doing. But until recently there was no reliable easier way to assess our cardiac health function. The purpose of this blog is to summarize a three-pronged approach to measure your heart and blood vessel health. It is described in detail in Ref.1, but I doubt that many people have yet read this important reference book. It is also important to FIRST see your doctor whether you are able to do the Bruce protocol (treadmill test, the third component below). If you neglect to be cleared by your doctor you run the risk of possibly getting angina pains or getting a heart attack.

1. Carotid IMT or carotid intimal-medial thickness test: You measure the degree to which there is hardening of the coronary arteries indirectly by measuring the thickness of the lining of the carotid arteries (carotid IMT or carotid intimal-medial thickness test). Dr. Masley has showed over a period of 10 years and more in many patients at his Health Center that there is a close correlation between the degree of coronary artery hardening and the degree of hardening of the carotid arteries. He stated that his research has shown that “90% of the time, the carotid arteries, the coronary arteries, and even the arteries of your legs all grow plaque at the same time”. The gold standard for checking the condition of your coronary arteries is a heart catheterization as Dr. Masley explains (page 58). But he adds: “IMT testing should be the new gold standard for cardiovascular plaque testing. However, this is not yet the case. Despite its usefulness, 95% of doctors are not ordering this screening test for their patients. You can rest assured that this is a situation I am to change“.

Measuring Your Heart Function

Measuring Your Heart Function

2. A detailed lipid analysis called the VAP test: A detailed laboratory test analyzing your lipid fractions (LDL, HDL, total cholesterol and VAP test). The buoyant HDL fraction, called HDL2 is the key to having a low risk for hardening of the arteries. HDL2 is large, fluffy and is designed to remove garbage from within the lining of the arteries. Also, the cholesterol ratio is another measurement for a low risk for hardening of the arteries when it is less than 3.0. The first two tests assess how much hardening of the arteries there is present and when they are normal, there is a relative reassurance that nothing drastic (like a heart attack or stroke) should happen within the next 10 years provided you keep up a regular exercise program and healthy food intake.

3. Bruce protocol (Treadmill test): The Bruce protocol (treadmill test) is often done by a cardiologists, but can also be done through many gyms, where a trainer with experience in exercise physiology will do it. This functional test measuring cardiac output has been developed many decades back and has withstood the test of time. Here is an overview what this is. As the slope of a treadmill and the speed of the belt are increased, the heart needs to do more work to maintain blood flow to your extremities and vital organs. The trainer or exercise physiologist measures the response of the heart activity in relation to the increase of the exercise load. A complicated formula allows calculating how much your maximal cardiac output is. This test has several variations and can be complicated to understand. Essentially, the higher the numbers you can create, the better. Here is a table with various results of the VaO2max from Bruce protocols and how they are interpreted.

4. Treating abnormalities found with the three basic tests: These are the necessary tools that tell you where you are in regard to your heart function. People with heart failure should not do this third test, because their heart muscle is too weak to sustain this and they would get heart failure meaning that blood gets backed up into the lungs and there could be severe breathing problems leading to a lack of oxygen (anoxia) in the heart tissue, which in turn can cause irregular heart beats (fibrillation of the heart muscle) and a heart attack. Assume that the first two tests were within the normal limit for your age, then the Bruce protocol would give you the maximum heart output at the peak level of your treadmill test. At this point you are measuring directly the cardiac output (in other words what your heart is capable of pumping for you in a certain time unit). This measurement is what physicians call the VaO2 max  or maximal oxygen consumption. This is the best index for maximal heart capacity. If your levels are higher than normal, you have extra reserves with respect to your heart as a pump for times when you need it. If this latter tolerance test shows poor results, it usually means that you were inactive and you would benefit from an exercise program. If the first test shows hardening of the arteries more than is appropriate for your age, you would need to look at your eating habits. At the same time often the VAT values and the cholesterol ratio is off meaning that you are eating the wrong foods and it shows in your blood test results.

5. Advise regarding diet, exercise and relaxation: Dr. Masley’s book has several sections that explain what needs to be done when things are not normal. For instance, the author does not mince words when it comes to eating the right fats and cutting out sugar and starchy foods. For instance on page 199 there is a neat table that lists the fiber content of different foods. We need more fiber to slow down the absorption of sugary substances, which will minimize the insulin response following a meal. Dr. Masley also mentions that omega-3-fatty acids from fish and good seafood choices will balance the omega-6-fatty acids that would lead towards the arachidonic acid pathway, which causes arthritis, inflammation and cancer. There are many more dietary recommendations, too numerous to repeat them all here. Suffice it to say that molecularly distilled omega-3 fish oil, vitamin D 1,500 to 3000 Units daily, and magnesium supplements are all good for you heart. Vitamin K2 gets calcium out of your blood vessels and into the bone (100 micrograms per day). Other worthwhile supplements mentioned in the book are CoQ-10 (50 to 200 mg twice per day), but it would be wise to have blood levels drawn, which should be above 2.5mcg/ml to which the CoQ-10 intake could be titrated. Curcumin and Resveratrol are also recommended. Most of all, it seems that regular physical exercise such as a balanced gym program is the single most effective way to reverse hardening of the arteries as measured by the carotid IMT testing.

Conclusion: Times have changed. It used to be thought that our lives were following a one-way street downwards. During periods of malnutrition, lack of exercise, being sessile and abusing alcohol and drugs this may well be the case. However, we now know that this is reversible. Change to healthier food, start smoothies with organic vegetables in a mixer, get going and walk. Jog or use a gym to get regular exercise. Physical exercise reverses the fat deposits inside the lining of the arteries. The HDL-2 fraction rises and helps counteract the elevated LDL cholesterol. Even the mood of the person who exercises regularly becomes more stabilized. Using these simpler three tests the physicians will not need the more complicated Thallium heart scans, heart catheterization etc. These three tests described above are well worth being done every two years, so that you can monitor what’s going on with your heart and blood vessels in general. What questions do you have? You could ask them below.

More information on heart disease: http://nethealthbook.com/cardiovascular-disease/heart-disease/

References: 1. Dr. Steven Masley, MD: “The 30-day Heart Tune-Up – A Breakthrough Medical Plan to Prevent and Reverse Heart Disease”, Center Street, A Division of Hachette Book Group Inc. New York, Boston, Nashville, USA © 2014.

Last edited Nov. 8, 2014

Feb
05
2013

News About Your Heart Health

By | Alzheimer’s disease, Arthritis, Cancer, Diabetes, Fitness, Health, Heart Disease, High Blood Pressure, Hormones, Nutrition, Obesity, Prevention, Stroke, Vitamins and supplements, Weight loss

Introduction

Notably, this article is regarding news about your heart health. Specifically, February is heart month every year. So I thought why not review what is new regarding heart health in the last 15 years. In addition, this review also puts all the facts into perspective. I will start with a review of the older teaching about heart disease. First thing to remember, there was a paradigm shift in medical thinking. I will explain how this has changed the approach to heart disease prevention. The anatomy of the heart including coronary arteries and the heart valves has not changed over the years. The heart has always been at the center of life and will remain there.

A heart attack can develop from closing of one of the coronary arteries

It used to be thought that when a person ages one should expect to get problems with high cholesterol, which would be the cause of hardening of coronary arteries of the heart until one day the person would experience a heart attack from the closing of one or more of the three coronary arteries. Certainly, cardiologists can then offer an arteriogram, place a stent to reopen any blocked coronary artery and the patient would be OK for another 5 to 10 years. Alternatively, coronary bypass surgery can be offered by a cardiovascular surgeon to revascularize the coronary arteries.

Apart from cholesterol patients can get heart attacks from chronic inflammation

In contrast, in the mid 1990’s all this changed with the realization that 50% of heart attacks happened in patients who had normal cholesterol levels. In fact, research showed that inflammation of the heart vessels starts the process of subsequent blockage that causes heart attacks. A great deal of research in animal models and with humans took place. Indeed, this showed that a lot can be done in the area of prevention of heart attacks. Cure rates can only change very little when damage to the heart muscle has already occurred. The paradigm shift is in the understanding of what leads to a heart attack.

Too much sugar, starchy food and fat cause inflammation of the coronary arteries

We now know that too much sugar, too many starchy foods and too much animal fat will lead to inflammation of the arteries including the coronary arteries. The reason is that faulty nutrition leads to a lack of omega-3 fatty acids and a surplus of omega-6 fatty acids. This starts the inflammatory cycle, which causes inflammation in the arterial walls. Rising LDL cholesterol levels (that’s the bad cholesterol) follow and HDL cholesterol levels (that’s the good cholesterol) fall.

Nitric oxide production necessary to keep coronary arteries open

Associated with this is a lowering of nitric oxide production in the lining of the arterial walls, which leads to a narrowing of the arterial opening and simultaneous development of high blood pressure. Research of the metabolism of cells, particularly the subunits of cells called mitochondria, shed a new light on the heart as well. Mitochondria are the energy producing subunits of the cells. They are abundantly present in those organs that have a high metabolism. These organs are the heart, brain, liver and kidneys.

News About Your Heart Health

News About Your Heart Health

Life prolonging steps to prevent heart attacks

This newer knowledge allows the prevention-oriented physician to help patients not to get heart disease on the first place. The key is to prevent inflammation of the arteries and to add nitric oxide as a supplement. Also, the physician wants to change the food composition that the patient consumes. In addition, the physician wants to  intervene at the mitochondrial level. The patient achieves this with the help of supplements and by a regular exercise program. Over the years there have been impressive clinical trials that show that these preventative means when taken together can add 10 to 20 years of productive life without any disability. In the following I am going to describe the rationale for each of these life-prolonging steps:

Preventing inflammation of the arteries

Preventing inflammation of the arteries: at the moment many people eat the standard North American diet consisting of foods with too much sugar, processed foods with animal fat and lots of pasta. People need to eat a lot of leafy-green vegetables (kale, spinach, Swiss chard) and lean pork, turkey and chicken.  this will change the omega-3 to omega-6 ratio in favor of omega-3 fatty acids. This has a powerful effect on your body, as the surplus omega-3 fatty acids will suppress any inflammation in your blood vessels, which prevents heart attacks.

Eat organic foods

If you also eat as much organic food as possible, you will in addition reduce the toxic load in your body from heavy metals like lead and mercury and chemicals like herbicides and insecticides that often are contained in regular non-organic foods. By cutting out sugar and refined carbohydrates fasting insulin levels and triglyceride levels fall. This prevents diabetes and keeps your arteries open longer.

Adding nitric oxide and doing intermittent chelation therapy

By adding nitric oxide as a supplement such as “Neo40” (this supplement has hawthorn and red beet extract in it) the lining of the arteries gets a boost of nitric oxide production.  This lowers your blood pressure and widens the arteries in your body including the coronary arteries. The result is more oxygen and nutrients for your heart cells. By intervening at the mitochondrial level with the help of supplements and by doing occasional intravenous chelation therapyto remove heavy metals you can revive the sluggish metabolism of the mitochondria of your major organs. It’s like you are recharging the battery of your car, just here we are dealing with the microscopic energy packages, the mitochondria, in the cells of your vital organs including your heart.

Life prolonging supplements

Certain vitamins and supplements help in this process as follows: D-ribose, alpha-lipoic acid and CoQ10 support mitochondria; niacin lowers triglycerides and LDL cholesterol and elevates HDL-cholesterol (the good cholesterol); magnesium is an important cofactor of many enzymatic reactions in your cells and it also lowers blood pressure by widening the arteries making it easier for your heart to pump blood through them. Omega-3 and vitamin D3 both are anti-inflammatories, which makes these two important supplements for heart attack prevention. Vitamin D3 is also important for your immune system and helps to absorb calcium from the gut. Vitamin K2 has been found to be important to help transport the calcium into your bones preventing osteoporosis, so that it does not stay in your vascular system and cause hardening of your arteries by getting into your arterial walls.

Bioidentical hormone replacement

Bio-identical hormone replacement therapy is a powerful stimulus for the metabolism of your whole body, but particularly your heart. The heart needs adequate amounts of thyroid hormones and sex hormones (testosterone in males, balanced estrogen and progesterone in females). DHEA is a precursor hormone from your adrenal glands that your hormone balance requires for support of your heart muscle. The physician can order hormone tests and replace what is missing with bio-identical hormones.

Regular exercise program

A regular exercise program rounds up your heart support program. A regular exercise program by itself has been shown to be powerful heart attack prevention by cutting heart attack rates into half when compared to a non-exercise control group. Exercise builds up your heart muscle reserves and prevents clogging up of coronary arteries.

Lifestyle changes

Lifestyle changes can have a powerful effect in terms of preventing heart attacks. Everybody knows that those who smoke will not live as long as those who don’t. Smoking accelerates hardening of the arteries and causes not only heart attacks, but also cancer. Perhaps less known is the fact that alcohol can poison mitochondria. The fact that wine contains bioflavonoids is what prevents heart attacks.  Statistics show that 1 glass of wine for women and two glasses of wine for men prolong life. The wine industry was quick to exploit these statistics for the benefit of their sales. Fact is that even small doses of alcohol are a cell poison. Bioflavonoids are much more effective when taken as part of your daily supplements (resveratrol capsules) and it is much healthier for your heart and other body parts, if you do not consume any alcohol at all.

Apart from the Framingham Heart Study what we know

Originally the Framingham study showed that high LDL cholesterol was associated with heart attacks. But now we know that it is the overconsumption of sugar, high fructose corn syrup and refined carbohydrates in processed foods as well as animal fat overconsumption (mostly omega-6 fatty acids) that lead to inflammation of the lining of the arteries including LDL cholesterol overproduction from the liver. The focus has switched from lowering cholesterol and triglycerides to reducing and preventing inflammation and to supporting the mitochondria of the heart muscle cells.

Preventing 85% of heart attacks

Simple steps as outlined above have the power to prevent about 85% or more of heart attacks. They work by treating insulin resistance through the diet changes, which in turn lowers fasting insulin levels, blood sugars and triglycerides as well as cholesterol. Inflammation is kept at bay. You prevent heart disease and in addition also arthritis, high blood pressure, strokes and Alzheimer’s disease. One of the side effects is weight loss, extra energy and a sense of wellbeing.

More information on heart disease: http://nethealthbook.com/cardiovascular-disease/heart-disease/

Jan
22
2013

Long-Term Multistep Weight Management

By | Cancer, Diabetes, Fitness, Health, Heart Disease, Hormones, Nutrition, Obesity, Prevention, Stroke, Vitamins and supplements, Weight loss

In February of 2001 my wife and I attended an anti-aging conference in San Diego. The keynote speaker was Dr. Barry Sears who is the inventor of the zone diet. We had read a book from him before the conference and were excited to hear him speak in person. We liked the book; we liked the talk, so we cut out sugar, starchy foods and stuck to a diet where the calories derived 50% from low-glycemic, complex carbohydrates, 25-30% from lean meat, poultry and fish. Calories derived from fat were reduced to about 15-20% (there is hidden fat even in lean meat). No butter, but instead some lean cheeses and olive oil for cooking and in salad dressings. We shed both 50 pounds within 3 months without any hunger pangs. Our energy increased and this has stayed  this way ever since. There was no problem getting down with our BMI’s (body mass index) to 23.5 or 24.0, which is usually viewed as normal by the medical profession. We noticed, however, that when we did not exercise, there was a problem maintaining our normal weight.  We are under the care of an anti-aging physician who did special tests like fasting insulin, C- reactive protein, and hormone tests. They were all normal. We took up ballroom dancing really seriously having been inspired by “Dancing With the Stars”. This was 6 years ago. What started innocently with only a few basic ballroom lessons three times per week has now blossomed into dancing more than 10 different dance styles 5 times per week.

Long-term Multistep Weight Management

Long-term Multistep Weight Management

3 ½ years ago both of our energy levels were slowly going down, particularly after a long night of dancing. Hormone tests revealed the initial stages of age-related hormone deficiencies which did not come as a surprise , as  decreasing hormone levels was a topic discussed  in detail at the conference in San Diego in 2001 (we also attended several other anti-aging conferences on a yearly basis from 2009 onwards). With bioidentical hormone replacements these levels normalized within one year, our energy was back and our weight stayed normal. We enjoy travelling, but there can be problems with our multistep weight management program. We need to watch our diet (no toxins, preferably only organic food), and physical exercise may be less regimented. In 2008 we read Suzanne Somers’ book “Breakthrough”. We ordered urine tests for toxic metals and we were shocked that we had noticeable levels of mercury and lead. Since then we started to cut our salmon consumption from 3 to 4 times per week down to once or twice per week. To get rid of the heavy metals we started intravenous chelation treatments with vitamin C (10 Gm) and Glutathione (1250 mg) every two weeks. In July 2012 there were reports of radioactive salmon from the Japan nuclear disaster earlier that year in the Canadian media. After this news we stopped eating all fish and other seafood, not only because of radioactivity, but also because of other toxins like mercury, cadmium, PBC’s etc.  We do take high doses of molecularly distilled omega-3 fatty acids along with our other supplements. We also started eating mostly organic foods as we do not want to ingest insecticides, herbicides and other toxins.

We acquired body composition scales, which give information about fat percentage including visceral fat percentage, muscle mass percentage, BMI, weight and the basic metabolic rate. We wanted to define the end point of what our ideal body weight would be. We noticed that our dance program was not good enough to lower the BMI below about 23.5; using the body composition scales we noted that our body fat content was still too high and the visceral fat percentage was still in the 6% range. It took a prolonged trip to the US where we could not find enough dance events to decide that we would introduce a one hour gym program consisting of 30 minutes of treadmill, 15 minutes of upper body circuits, and 15 minutes of lower body circuits every day as a basis to our exercise program. Any dance activity would be just an additional exercise on top of the base exercise from the gym. It took only about 2 months before our fat composition decreased, our muscle mass increased, the visceral fat went to a normal at 5% and the BMI was now stabilized at the 21.5 to 22.0 range. We feel a lot more confident in managing our weight long-term without really thinking much about the weight. It is now a routine we follow, like an athlete would do to stay in shape. While nobody has a permanent guarantee to everlasting health, we do it to prevent the diseases we do not need in our retirement like diabetes, arthritis, heart attacks, strokes, cancer or Alzheimer’s.

What we did not know until after the 20th A4M Anti-Aging Conference in Las Vegas (mid December 2012) was that inadvertently we were protected from exposure to chemically modified wheat from 2001 onwards as we had cut out all refined carbohydrates and starchy foods (including wheat) since then. Unfortunately many Americans still expose themselves unknowingly to larger or smaller quantities of wheat, suffer from leaky gut syndrome with the associated changes in the immune system and the development of autoimmune diseases.

Personally, I believe that long term weight management is possible: you can turn older and hopefully wiser…not wider. The good news: it can be done. The bad news: this is not an instant fix, but a program that needs to be part of your lifestyle package.

More information on weight loss: http://nethealthbook.com/health-nutrition-and-fitness/weight-loss-and-diet/

Last updated Nov. 6, 2014

Jan
01
2007

Ballroom Dancing Improves Heart Health

By | Fitness, Health, Heart Disease, Prevention

It has been pointed out that there is not such a notion “It’s too late now to think of an exercise program”.
Researchers led by Dr. Romualdo Belardinelli, director of cardiac rehabilitation from the Lancisi heart Institute in Ancona, Italy took a close look at 110 patients with stable chronic heart failure. The average age of the patients was 59 years and 89 of them were men. The group was assigned different physical activities. Forty-four patients used an exercise bike or exercise treadmill three times a week for 8 weeks. Forty- four other patients chose to participate in 21-minutes of ballroom dancing consisting of waltzes (alternating slow and fast) three times per week. A third group of 22 patients had no exercise. Heart rates during exercise training and dancing were similar at 110 respectively 113 beats per minute. Cardiopulmonary fitness improved at a similar rate in both groups. Oxygen consumption increased by 16 % in the exercise group and by 18% in the dance group. In other words, exercise fitness had significantly improved in these two groups.

Quality of life as measured by the Minnesota Living With Heart Failure Questionnaire improved significantly more in the ballroom dance group, particularly in the emotional domain.

Ballroom Dancing Improves Heart Health

Ballroom Dancing Improves Heart Health

The findings are not just of significance to patients with heart failure. It is the observation that ballroom dancing seems to be a more effective way to get people into an exercise program who otherwise would not be interested in this. For some people it is simply more enjoyable to dance and enjoy social interaction as an additional benefit than running on a treadmill.

More information is available about:

1. Fitness: http://nethealthbook.com/health-nutrition-and-fitness/fitness/

2. Health for adults: http://nethealthbook.com/health-adults/

3. Health for seniors: http://nethealthbook.com/health-seniors/

Reference: The Medical Post Dec. 19, 2006, page 17

Last edited November 2, 2014

Nov
01
2006

Body Can Fight Weight Loss

By | Nutrition, Obesity, Weight loss

Embarking on a weight loss program needs long-term commitment and persistence. Many dieters have experienced the yo-yo effect of good initial results in losing weight, after which the weight loss stopped, and gradually the weight was gained back. Often dieters blame themselves for their lack of success or are criticized for a lack of self-control.
The “plateau effect” has been discussed and documented before, and now an Australian study has found that “it is not just you”. After initial success and weight loss the human body is designed to strongly resist attempts to lose weight. Dr. Neil King from Queensland University of Technology does research on appetite regulation and energy balance. He conducted studies on groups of people who were overweight and obese people. He found that weight loss from exercise and calorie restriction stops at a certain point, and this plateau remains firmly in place for a prolonged time, despite continuing dieting and exercise.

In the first study 30 obese men and women from Britain took part in a 12-week, laboratory based exercise program in which they exercised five times a week. The second study observed the weight loss in 200 Australian men who were enrolled in a commercial weight loss program, which involved both an exercise program and dietary advice. Although both groups followed different plans, their weight loss still plateaued. The first group averaged a loss of 3 kg during the first 8 weeks, and weight loss in the next 4 weeks was markedly reduced (0.7 kg). The second group had a variable pattern of weight loss, but it, too, showed a plateau.

Body Can Fight Weight Loss

Body Can Fight Weight Loss

Researchers believe that the human body is designed to cope with famine. As a result there is a built-in mechanism responsible for weight loss resistance. It may be a source of frustration to people on a weight loss program in a society where there are no food shortages, but it is meant to be a lifesaver in times when there was a shortage of food.
For the person who wants to lose weight it involves taking a closer look at the caloric output. Longer exercise times, higher intensity or cross training can combat the plateau effect, but patience is also needed along with the determination to carry on with the program.

More information about weight loss: http://nethealthbook.com/health-nutrition-and-fitness/weight-loss-and-diet/

Reference: The Medical Post, October 10, 2006, page 19

Last edited November 1, 2014

Jul
01
2006

Exercise Can Reverse Risk Of Heart Disease

By | Fitness, Heart Disease, Prevention

A growing health concern is cardiovascular illness. As a rule the risk increases with unhealthy life style choices. The most common neglect is the lack of physical activity, and a couch-potato existence is a sure recipe for poor health. Often juvenile “couch potatoes” lay the groundwork for health problems in their middle age years.
Jennifer Robbins of Duke University in Durham, N.C. led a follow-up study on a group of participants. The objective was to examine, how much impact an exercise program would have on the overall condition of the participants. Fitness parameters included weight, waist circumference, visceral and subcutaneous fat, cholesterol levels and metabolic score.
In a control group 61 subjects were instructed not to change their dietary habits or exercise habits for 6 months. Researchers expected that the general health condition of these people would stay the same. What was observed, however, was a deterioration of all the fitness parameters. The sedentary group actually got worse! At the end of the study, all the 61 were offered to participate in one of the exercise programs offered to the other groups. 53 participants decided to take part, and they were enrolled in a low- intensity, medium-intensity and high- intensity exercise program. The two lower groups managed to reverse the detrimental effects of inactivity on cardio-vascular risk in a half-year exercise program. The researchers noted also that the ones who had deteriorated the most during the sedentary period achieved the most improvement from the exercise program.

Exercise Can Reverse Risk Of Heart Disease

Exercise Can Reverse Risk Of Heart Disease

Exercise Physiologist Jennifer Robbins and her team concluded, that the study result gives encouragement to those who don’t exercise and feel bad about it, as they will reap the most benefits. The results also give doctors more incentive to make physical exercise part of a prescription regimen. With a word of recommendation from the physician patients are more likely to enrol in an exercise program and stick with it.

More info about:

Heart disease: http://nethealthbook.com/cardiovascular-disease/heart-disease/

Fitness and exercise: http://nethealthbook.com/health-nutrition-and-fitness/fitness/ 

Reference: The Medical Post, June 20, 2006, page 47

Last edited Nov. 1, 2014