Benefits Of Aerobic Exercise & How To Exercise Aerobically

By Jasmine Greene


Dr. Kenneth Cooper, an exercise physiologist at San Antonio Air Force Hospital, was the first to coin the term "aerobics." He developed a heart rate formula of subtracting your age from 220 and exercising with the heart rate at 60-80% of that number. Originally this formula was designed for astronauts, but the benefits of "aerobics" soon convinced Dr. Cooper that this type of exercise is beneficial to everybody.

Since then studies have demonstrated many benefits of regular aerobic exercise, including:

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

*More long-term, consistent energy & stamina

*Improved mood

*Pain relief (by natural endorphin production)

*Stronger heart and better circulation (by keeping arteries clear and preventing heart disease)

*Improved blood sugar control and adrenal health

*Lower blood pressure

*Stronger bones (weight bearing aerobic exercise helps prevent osteoporosis)

*Stronger immune system

*Longer life expectancy

If you have been battling low energy, poor endurance, aches and pains, too much body fat, stress, or sugar and carb cravings, your body is probably not getting enough aerobic exercise!

The exercise intensity and duration determine whether the muscles work aerobically or anaerobically. Aerobic exercise requires a very specific level of intensity for at least thirty minutes at a time. If the heart rate is too low or too high, the exercise becomes 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, the body burns sugar (glucose) for energy. No oxygen is required for this type of energy production. Burning sugar provides short term speed and power. Muscles cannot burn sugar for long, however, and so they fatigue 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 (anaerobic) exercise and rest.

Dr. Phil Maffetone is an internationally recognized researcher who has greatly improved our understanding of aerobic exercise and endurance training. He studied many variables, including heart rate, gait, and muscle imbalances in many athletes before and after workouts. Dr. Maffetone discovered that the athletes who exercised using Dr. Cooper's original formula often ended up over-training and suffering from injuries, pain, joint problems, and distorted posture and body mechanics. His work led Dr. Maffetone to develop a new and improved formula for calculating each person's target heart rate for true aerobic exercise.

Follow these four simple steps to ensure you're training aerobically and enjoying all the benefits of aerobic exercise:

1. Invest in a heart rate monitor, one with a chest strap as well as a wrist watch. It's not a good idea to exercise without one because you'll have no way of knowing if your pace is correct. There are many brands and models available to you. Polar is an industry leader and is usually a safe bet. If you work out in a gym, make sure your monitor is coded so that there is no electrical interference from other devices nearby.

2. Calculate your maximum aerobic heart rate using Dr. Maffetone's formula. Just subtract your age from 180 to calculate your maximum aerobic heart rate. For example, a 33 year old who wants to exercise aerobically would have a maximum heart rate of 147 beats per minute. Modifiers and exceptions to this formula are as follows:

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

*Add 5 to the max heart rate if you've trained 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 those age 16 or younger. The 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, bike or swim while wearing your heart rate monitor. Stay within your aerobic heart rate zone for at least 30 minutes at a time, and do this at least three times per week. I don't advise exceeding 90 minutes without a doctor's supervision.

As you will soon discover, it's amazingly easy to exercise aerobically. It doesn't take much effort to elevate your heart rate to the target zone. This is good news for couch potatoes (Talk about exercising smarter, not harder!), but can be frustrating for athletes who don't want to slow down. However, athletes must train aerobically to protect their bodies. The silver lining for athletes is that, as your heart becomes more aerobically fit, you'll be able to pick up the pace without exceeding the maximum aerobic heart rate. With the aid of your heart rate monitor, you'll soon also discover that any activity other than running, walking, cycling or swimming (at a constant pace) is likely to be anaerobic.

As a chiropractic doctor and acupuncturist, I've noticed substantial benefits for both myself and my patients who exercise aerobically each week. The immediate and long-term benefits are well worth the effort!




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