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Creatine Monohydrate
Creatine Monohydrate is an amino acid which occurs naturally in our bodies. Creatine can be found occurring naturally in many meats and is also created by the liver, pancreas, and kidneys from glycine and arginine. In addition to this one can...
Fighting Obesity - an ayurvedic way
Definition of Obesity
Excess amount of body fat is Obesity. Excess weight of muscles,
bone, fat and water in the body (like body builders and
athletes) is Overweight. Over weighted persons are at increased
health risk than normal persons....
Have You Bought Into These Arthritis Myths?
Myth 1: Exercise doesn't help arthritis, and in fact makes the condition worse. Fact: Proper exercise performed on a regular basis is an important part of arthritis treatment, according to the Arthritis Foundation. Twenty years ago, doctors...
Top Ten Excuse-busters for taking Exercise
1. Exercise is boring
Not all exercise is created equal. You don't have to get fit by spending hours on soul-less machines down at the gym. Somewhere out there is an activity you'll love and it's just a case of looking around until you find it. Is...
Workout And Exercise Equipment At Home
If you want to start exercising in you own home, which kind of exercise equipment do you need? Your workout plan determines exactly which kind of training you are going to start up and the equipment that is necessary for this kind of workout.
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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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