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Mar 12

Fitness with a bounce: jump into the 'rebound exercise' boom

Fitness Comments Off on Fitness with a bounce: jump into the 'rebound exercise' boom

Don't run. Bounce. You'll get fit faster, with far less risk of injury, say enthusiasts.

"Rebound exercise is the most efficient, effective form of exercise yet devised by man," claimed Albert E. Carter, a former professional wrestler who wrote a book about it in 1979. A NASA study a year later essentially confirmed his claim.

The NASA scientists took measurements of eight young men as they walked, jogged and ran on a treadmill, then had them jump on a trampoline.

"The external work output at equivalent levels of oxygen uptake were significantly greater while trampolining than while running," the NASA scientists said. "The ratio of oxygen consumption was sometimes more than twice as efficient as treadmill running."

When you jump on a trampoline, the force of gravity on your ankles, back and forehead is evenly distributed, but when you run on a treadmill, the G-force on the ankles typically is twice as great, the NASA researchers found. This leads to shin splints and knee problems.

Mr. Carter and his family were regular users of a trampoline but did little else in the way of exercise. They discovered they were stronger, fitter and better balanced than other people they knew who exercised more. He attributed their success to more than the extra effort they were forced to exert with their "core" muscles to keep their balance.

In his book "The Miracle of Rebound Exercise," Mr. Carter referred to the writings of the late C. Samuel West, an Arizona chemist and lymphologist in the field of naturopathic medicine. He wrote that "rebound exercise" uses three powerful forces -- gravity, acceleration and deceleration -- not available in more conventional forms of cardiovascular exercise. Mr. West said it proves the body's lymphatic system gets a boost, as well.

Mr. West described it this way: At the top of the bounce, your body becomes weightless. At the bottom, you experience 1 1/2 times the force of gravity. Your body automatically strengthens itself to cope with the worst conditions that are presented to it. If you constantly expose your body to 1.5 Gs, it will strengthen itself to cope with the stress.

Weightlessness at the top of the bounce stimulates the lymphatic system into greater efficiency, Mr. West found. Like blood, lymph fluid circulates throughout the body. Part of the body's immune system, it's a protein-rich fluid that collects bacteria, viruses and waste products, which are eventually flushed from the body. Mr. Carter calls the lymphatic system "your body's internal vacuum cleaner" and repeats natural medicine claims that vigorous physical exercise increases lymph flow by 15 to 30 times.

At first, rebound exercise just meant jumping on a trampoline. Rebounding shoes expand the exercise options available. A popular brand is Kangoo Jumps -- fitness shoes with a boot-like ankle support attached to a rebounding platform.

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Fitness with a bounce: jump into the 'rebound exercise' boom

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