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Exercise

Does Music Make You Exercise Harder?

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For a study published last year, British researchers asked 12 healthy male college students to ride stationary bicycles while listening to music that, as the researchers primly wrote, “reflected current popular taste among the undergraduate population.” Each of the six songs chosen differed somewhat in tempo from the others.

During one session, the six songs ran at their normal tempos. In other sessions, the tempo was slowed by 10 percent or increased by 10 percent. Their activity changed significantly in response.

When the tempo was slowed, their pedaling diminished in rate, their heart rates fell, and their mileage dropped. When the tempo was increased, they produced more power with each pedal stroke and increased their pedaling rate, and their heart rates rose.

The New York Times reports:

“The interplay of exercise and music is fascinating and not fully understood, perhaps in part because, as a science, it edges into multiple disciplines, from physiology to biomechanics to neurology.

No one doubts that people respond to music during exercise … Just how music impacts the body during exercise, however, is only slowly being teased out by scientists.”

You may click to see : Does Music Help Exercise Endurance

Resources:
New York Times August 25, 2010
Scandinavian Journal of Medicine & Science in Sports August 2010; 20(4):662-9
LifeHacker August 30 2010

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Healthy Tips

How safe is Nonstick Cookware

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When heated, cookware coated with Teflon and other non-stick surfaces emits fumes that can kill birds and potentially sicken people.

Recent research says that it is unsafe to cook children food in nonstick cookware as their  blood cholostrole level becomes very high when they eat food cooked in nonstick cookware.(Source :Elements4Health)

Between 1999 and 2003 there were a lot of news reports about studies showing that the chemicals known as PFO’s, PFOA’s and PFC’s were being released from cookware and getting into people’s bodies. Many groups came out with warnings suggesting that non-stick cookware be replaced by regular stainless steel or cast iron pots and pans. people  have known about this warning for quite some time, but even then   cookware coated with the chemical commonly known as Teflon is still the vast majority of cookware in use today. The chemical coatings are inexpensive so non-stick cookware is less costly than stainless steel. There are  Non-stick cookware safety tips to cook in them but most of us donot follow them at the time of cooking. The non-stick properties of Teflon make cooking some types of food so much easier that it is unlikely that most people will ever go back to using traditional pots and pans considering their future family health risk.

Taflon structure

Statistics reported by the Cookware Manufacturers Association indicate that 90 percent of all the aluminum cookware sold in the United States in 2001 was coated with non-stick chemicals like Teflon (Cooks Illustrated, September 2002). Chemicals and tiny, toxic Teflon particles released from heated Teflon kill household pet birds. At least four of these chemicals never break down in the environment, and some are widely found in human blood. Consumers concerned about the effects of Teflon on human health and the environment should consider these alternatives:

Stainless Steel….
Stainless steel is a terrific alternative to a non-stick cooking surface. Most chefs agree that stainless steel browns foods better than non-stick surfaces. In their 2001 review of sauté pans, Cooks Illustrated, an independent publication, chose a stainless steel pan over otherwise identical non-stick models. They also recommended stainless steel pan roasters over non-stick.

Cast Iron….
Cast iron remains a great alternative to non-stick cooking surfaces. Lodge, America’s oldest family-owned cookware manufacturer, refers to their cookware as “natural non-stick.” Cast iron can be pre-heated to temperatures that will brown meat and will withstand oven temperatures well above what is considered safe for non-stick pans. Cast iron is extremely durable and can now be purchased pre-seasoned, ready-to-use.

Other Cooking Surfaces….
Because Teflon coated non-stick surfaces fail to brown foods there has been a push to find other “non-stick” cookware coating that will allow the use of higher temperatures and still clean up easily. Some examples include ceramic titanium and porcelain enameled cast iron. Both of these surfaces are very durable, better at browning foods than PTFE (Teflon) non-stick coatings, and are dishwasher safe. In her New York Times piece, “In Search of a Pan That Lets Cooks Forget About Teflon,” Marian Burros recommends Le Creuset enameled cast iron pans with a matte black interior. Anodized aluminum is another alternative, but some people question its safety, citing evidence in some studies linking aluminum exposures to Alzheimers.

Click to see :Hidden Dangers in the Kitchen

For more knowledge you may click to see how harmful nonstick  cookware is

Resources:
http://willtaft.com/health/i-do-not-use-teflon-cookware/
http://www.ewg.org/alternative-cookware

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News on Health & Science

More and More Americans are getting Obese

Americans are continuing to get fatter. Obesity rates reached 30 percent or more in nine states last year, as opposed to only three states in 2007.

The increases mean that 2.4 million more people became obese from 2007 to 2009.  This brings the total to 72.5 million, or 26.7 percent of the population.

According to the New York Times:

“… [T]he rates are probably underestimates because they are based on a phone survey in which 400,000 participants were asked their weight and height instead of having it measured by someone else, and people have a notorious tendency to describe themselves as taller and lighter than they really are …

Researchers blame the usual suspects: too little exercise and too much of the wrong kind of food.”


Source:
New York Times August 3, 2010

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Healthy Tips

Regular Moderate Exercise can cut the Risk of Acid Reflux

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For people with chronic heartburn, too much running and jumping can induce acid reflux. However, the right type of exercise may actually improve the condition.

CLICK & SEE

Short bouts of fairly moderate exercise at least a couple of times a week can cut the risk of gastroesophageal reflux disease, or GERD, in part because it reduces body mass index.

The New York Times reports:

“The specific exercise is crucial. Scientists found that aerobic exercises with the highest ‘agitation of the body,’ like vigorous running, consistently induced acid reflux, even in people who did not have chronic heartburn …

Another factor is body position. Bench presses, leg curls or any other exercise that involves lying flat sharply raise the risk of acid reflux.”

What Types of Activities Make Heartburn Worse?
As you might suspect, vigorous jumping, bouncing, running and other activities that cause agitation of your body can make heartburn worse, simply because it makes it easier for your stomach acid to move into your esophagus. For this reason, vigorous aerobics and other agitating exercise routines may exacerbate your symptoms, especially if you eat within two hours of your workout.

That said, heartburn also tends to flare up during other routine activities as well, such as:

•After eating a heavy meal
•Bending over
•Lifting
•Lying down, especially when laying on your back
If you know you have GERD, or even if you suffer from heartburn only occasionally, it makes sense to limit these activities, especially shortly after eating, or at least tailor them so they’re less likely to cause a problem.

For instance, by eating smaller portions at your meals it can help you to avoid overeating, which is a major trigger for heartburn. Likewise, if you wait two or three hours after dinner before lying down in bed, it will also give you some relief.

When you do lie down, elevating the head of your bed may make you more comfortable, as can squatting down when you need to pick something up (instead of bending over).

And just as you can modify these common activities so they don’t make your heartburn worse, you can modify your exercise program to follow suit as well.


But at the same time Exercise is Essential, Even if You Have Heartburn

One of my top recommendations for treating heartburn and GERD is to implement an exercise program.

Physical activity is an important way to improve your body’s immune system, which is imperative to fight off all kinds of infections. What does this have to do with GERD?

Source: New York Times July 26, 2010

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Healthy Tips

Two Foods You Should Never, Ever Eat After Exercise

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Did you know that what you eat directly after exercising – typically within two hours – can have a significant impact on the health benefits you reap from your exercise?

CLICK & SEE

Consuming sugar within this post-exercise window, will negatively affect both your insulin sensitivity and your human growth hormone (HGH) production.

A recent study in the Journal of Applied Physiology found that eating a low-carbohydrate meal after aerobic exercise enhances your insulin sensitivity. This is highly beneficial, since impaired insulin sensitivity, or insulin resistance, is the underlying cause of type 2 diabetes and a significant risk factor for other chronic diseases, such as heart disease.

In addition, as HGH Magazine explains, consuming fructose, including that from fruit juices, within this two-hour window will decimate your natural HGH production:

“A high sugar meal after working out, or even a recovery drink (containing high sugar) after working out, will stop the benefits of exercise induced HGH. You can work out for hours, then eat a high sugar candy bar or have a high sugar energy drink, and this will shut down the synergistic benefits of HGH.

… If you miss reaching HGH release during working out, you will still receive the calorie burning benefit from the workout. However, you’ll miss the HGH “synergy bonus” of enhanced fat burning for two hours after working out.

This is an extremely important fact to remember if you want to cut body fat and shed a few pounds.

The University of Virginia research team demonstrated that carbohydrates are burned during exercise in direct proportion to the intensity of training. Fat burning is also correlated with intensity. However, the actual fat burning takes place after the workout, during the recovery.

This makes the “Synergy Window,” the 2 hour period after a workout, very important in maximizing HGH, once it’s released during exercise.

… If you are middle-age and want all the benefits from exercise induced HGH, then apply this strategy.”

Fitness expert Phil Campbell, author of Ready, Set, Go! further explains how you can maximize your HGH production by limiting sugar intake for two hours post exercise, in this article on HowToBeFit.com.

Exercising one hour a week and getting the same results as traditional strength training might sound impossible. However, University of Florida orthopedics researchers have developed a system that may do just that, and as you will read in my comment below, the kind of exercise you perform can dramatically reduce the time you spend in the gym while still getting better results than you did before.

The system created by University of Florida researchers uses eccentric (negative) resistance training, which capitalizes on the fact that the human body can support and lower weights that are too heavy to lift.

According to UF Health Science Center:

“Through a system of motors, pulleys, cams and sensors it adds weight when a person is performing a lowering motion, and removes that weight when the person is lifting. As a result, the body starts seeing loads, resistance, and forces that it doesn’t normally see”.

Other scientists have found additional clues that explain how exercise reshapes and strengthens more than just your muscles.

It changes your brain too.

In the late 1990s, researchers proved that human and animal brains produce new brain cells, and that exercise increases the process. But precisely how exercise affects the intricate workings of your brain at a cellular level remained a mystery.

However, a number of new studies have begun to identify the specific mechanisms, and have raised new questions about just how exercise reshapes your brain.

In some studies, scientists have been manipulating the levels of bone-morphogenetic protein (BMP) in the brains of mice. The more active BMP becomes, the more inactive your brain stem cells become and the fewer new brain cells you produce. Exercise reverses some of the effects of BMP.

According to the New York Times:

“BMP signaling was found to be playing a surprising, protective role for the brain’s stem cells … Without BMP signals to inhibit them, the stem cells began dividing rapidly, producing hordes of new neurons.”

Resources:

UF Health Science Center February 23, 2010

New York Times July 7, 2010

PloS One October 20, 2009; 4(10):e7506

Cell Stem Cell July 2, 2010; 7(1):78-89

Journal of Applied Physiology December 31, 2009

HGH Magazine

HowToBeFit.com

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