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An Apple on Your Head. Relationship Physics
An Apple on Your Head. Relationship Physics
Attempts to describe the differences and similarities of men and
women have been made by philosophers, church leaders, and
day-time TV. All have failed.
Our ancestors lived in trees, then we...
Indoor Air Quality - Air Quality Test – The Air Purifier Test That You Can Do Yourself, Today!
Why clean kids get sick more often! People spend 80% of their time indoors. We breathe normally about 10 times a minute. Multiply that times 1440 minutes a day. This comes to over 14,000 breaths each day of quality air. If we can survive for a...
Myths That Effect Your Muscle Building Results
Over the past 5 years, while working as a personal trainer, I've
discovered a lot of muscle building hype floating around the
internet.
Here are some of the most common myths that will effect your
muscle building goals. Next to the myth,...
Smokers love excuses. Nothing makes them happier than, 'I
Okay, before we start, let me explain the purpose of this article. I want you to get so healthy, you'll never need to make a health insurance claim. You'll save money by increased fitness. You'll save money with a long no-claims insurance history....
Walking Is The Best Exercise
Running, jogging, weight lifting, calesthenics. These are all good for keeping in shape but walking is still the most simple, and effective, of all exercises to lose weight and stay in shape and maintain good health.
Approximately 67 million...
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5 Little Known Facts About Lactic Acid
Everybody knows that lactic acid accumulates when we exercise at a high intensity, but there is much more to lactate than that. It plays an integral role in many of the body’s metabolic processes.
1. Lactic Acid is Always Present
It’s always being produced. At rest your lactic acid levels will be about 1 millimoles/liter (mmol/L). As exercise intensity increases so does the production of lactic acid. It’s not until you pass your anaerobic threshold that it reduces your efficiency. For most people this is approximately 4 mmol/L, or 70-80% of their VO2max.
2. Not Just Oxygen Deficiency
It is commonly thought that it is the lack of oxygen that causes the increased production of lactic acid. Whilst it is a contributing factor, it is the absence of the “carrier molecules” NAD (nicotinomide adenine dinucleotide) and FAD (flavin adenine dinucleotide) that have a much greater effect. They play the important role of transporting hydrogen into the cells for use in the production of energy. If they are not around, the hydrogen joins with pyruvate to produce lactic acid.
3. Lactic Acid as Fuel
Lactic acid is usually removed from the muscle tissue within 30 minutes after exercise. It is used by liver, heart, and kidney as a source of energy. The liver can also convert it back into glucose, where it is released into the bloodstream for muscle use. It can also be converted into glycogen for storage.
4. Fatigue and Lactic Acid
Most people know that increases in lactic acid causes a
decrease in your ability to perform but few actually know how this occurs.
Firstly, you’ll have a decrease in energy. The increase in hydrogen reduces the production of ATP (energy) by inhibiting key ezymes involved in its production.
Secondly, your muscles won’t be able to contract as often or with as much force. For a muscle to contract we need calcium to attach itself to binding sites within the muscle. The more calcium attached, the more forceful the contraction. The problem occurs because hydrogen competes with calcium for bindings sites.
5. Delayed Onset Muscle Soreness (DOMS)
Delayed Onset Muscle Soreness is the pain you feel in the muscle 24-48 hours after exercise. It was once thought that lactic acid caused this but it has now been proven wrong.
It’s the excessive mechanical force which results in damage to the muscle or connective tissue. The body responds by repairing it and this stimulates sensory nerve endings which results in pain. This is why it usually occurs when you first start an exercise program, or when you train at an unusually high intensity.
About the Author: Ray Kelly has a degree in Exercise Science and has worked in the fitness industry for 15 years. For more information on health and fitness, go to http://www.free-online-health.com
Source: www.isnare.com
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| Aerobic - Wikipedia, the free encyclopedia |
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