Benefits Of Aerobic Exercise And Guidelines To Ensure Your Workouts Are Really Aerobic

By Jasmine Greene


"Aerobics" was first coined by Dr. Kenneth Cooper, an exercise physiologist at San Antonio Air Force Hospital. He developed the formula of subtracting your age from 220 and exercising with the heart rate at 60-80% of that number. Though originally formulated to help astronauts, the benefits of "aerobics" made Dr. Cooper realize that this type of exercise is useful for everyone.

Since then the original formula has been improved upon, and studies have demonstrated more benefits of regular aerobic exercise, including:

*Weight loss and weight maintenance (aerobic exercise burns fat.)

* An increase in consistent, long-term energy and stamina

*Improved mood

*Pain relief (by natural endorphin production)

*Stronger heart & better circulation (keeps arteries clear and helps prevent heart disease)

*Better blood sugar control & adrenal health

*Lower blood pressure

*Stronger bones and osteoporosis prevention

*Stronger immune system

*Longer life expectancy

If you're suffering from low energy, dwindling endurance, aches and pains, excessive body fat, stress, or if you crave sugar or carbs, chances are you're not getting enough aerobic exercise!

There are two basic criteria that set aerobic exercise apart from anaerobic: intensity and time. To exercise aerobically, your body must be at a very specific level of intensity, and you must maintain that level of intensity for at least thirty minutes at a time. If your heart rate is too low or too high (or variable), your exercise will become anaerobic instead.

During true aerobic exercise, the body burns fat for energy. This process requires oxygen, hence the term "aerobic." Aerobic exercise is useful for improving muscle endurance (allowing them to function for hours or days at a time without fatigue). This is especially important for those muscles that support posture, joints, and the arches of the feet. Therefore, if there is not sufficient aerobic exercise, the chances of joint problems, injuries, and low stamina increase.

In anaerobic exercise, sugar (glucose) is burned for energy. This process does not require oxygen. Burning sugar helps provide muscles with short-term speed and power. However, muscles cannot burn sugar for long, so they tire quickly. Most people have no shortage of anaerobic exercise. Even while seated, the body runs many tasks anaerobically, and virtually all sports are anaerobic due to their alternating bursts of high intensity activity and rest.

Internationally recognized researcher and author Dr. Phil Maffetone has greatly changed our understanding of aerobic exercise and endurance training. Dr. Maffetone studied many athletes pre- and post-workout for many indicators, including heart rate, gait, and muscle imbalance. He found that the athletes who used Dr. Cooper's original formula often over-trained and suffered from injuries, distortions in body mechanics and posture, pain, and joint problems. After much work, Dr. Maffetone developed a new and improved formula for calculating each individual's target heart rate for true aerobic exercise.

Follow these four simple steps to ensure your training is aerobic and to enjoy all the benefits of aerobic exercise:

1. Invest in a heart rate monitor. It's just not a good idea to rely on the "feel" of a workout or to guess at whether your heart rate is too low or too high. There are many brands and models to choose from. Polar is an industry leader and is usually a safe bet. I recommend purchasing a model that has a chest strap as well as a wrist watch/display. If you work out in a gym rather than outdoors, invest in a model that is coded so that there is no electrical signal interference from other devices in the gym.

2. Calculate your maximum aerobic heart rate using Dr. Maffetone's formula. Simply subtract your age from 180. For example, a 32 year old who wants to exercise aerobically would have a maximum heart rate of 148 beats per minute. Modifiers and exceptions to this formula include:

*Subtract another 10 from the maximum heart rate if recovering from major illness or surgery, or if on any regular medications

*Subtract another 5 from the maximum heart rate if you're injured, have regressed in training or competition, suffer from more than two bouts of cold/flu per year, have asthma or allergies, just starting to train, or if you've been training inconsistently (Dr. Maffetone defined consistency as at least 4 times weekly for 2 years).

*Add 5 to the max heart rate if: training consistently for more than 2 years without any injuries or problems and have made progress in competition.

*Add 10 to the max heart rate if you're over the age of 65.

*This formula does not apply to athletes 16 years old or younger. Best bet for these athletes is 165 as the max heart rate.

*If in doubt, choose the lower maximum heart rate.

3. Calculate your minimum aerobic heart rate by subtracting 10 from the maximum aerobic heart rate. So a healthy 33 year old would have a max heart rate of 147 and a minimum of 137.

4. Walk, jog, swim or bike while wearing your heart rate monitor. Stay within your aerobic heart rate zone for at least 30 minutes at a time, and at least three times a week. I don't recommmend exceeding 90 minutes without a doctor's supervision.

You'll find it's surprisingly easy to exercise aerobically. It doesn't take much to get your heart rate up to the target zone. That's good news for couch potatoes (talk about exercising smarter, not harder!), but sometimes frustrating for athletes who don't want to slow down their training. Athletes need to do this, however, to protect their bodies. The good news for athletes here is that, as your heart becomes more aerobically fit, you'll soon be able to quicken the pace without surpassing your maximum aerobic heart rate. Once you start wearing a heart rate monitor, you'll likely also discover that any activity other than running, walking, cycling, or swimming at a steady pace is anaerobic.

As a chiropractor, acupuncturist, and athlete, I've noticed remarkable benefits with aerobic exercise for both myself and my patients. The immediate and long-term benefits are well worth the effort!




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