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Why Your Workout Should Be High-Intensity
Many people with chronic health problems resign themselves to lives of modest activity or no activity at all, thinking vigorous exercise is unsafe or that they lack the stamina for it. But recent studies are proving just the opposite.
They are showing that high-intensity exercise may be even better than regular aerobic activities for many patients with conditions like heart disease, diabetes, stroke, pulmonary disease, arthritis and Parkinson’s disease.
The studies strongly suggest that a more demanding but more efficient and often
Although once reserved for athletes seeking a competitive advantage and for healthy people wanting to burn more body fat, HIIT is now being studied as a treatment that is sometimes as effective as medication for many people with chronic health problems.
Researchers have found that repeatedly pushing the body close to its exercise limits for very brief periods, interspersed with periods of rest, is more effective than continuous moderate activity at improving cardiovascular, respiratory, metabolic and mechanical functions.
Various activities can be adapted to interval training, including cycling, swimming, walking and jogging, especially on a machine like a stationary bike or treadmill. But HIIT is possible indoors and out, for example by alternating sprints with more moderate exercise.
High-intensity exercise, even just half a minute at a time, is not appropriate for everyone. In a recent report in the American College of Sports Medicine’s Health & Fitness Journal, Dr. Little; his wife, Mary E. Jung, also at the University of British Columbia; and Marcus W. Kilpatrick of the University of South Florida wrote that HIIT “is only appropriate for low-risk individuals, moderate-risk individuals who have been cleared for vigorous intensities by a medical professional, and high-risk individuals who are under direct medical supervision during exercise training.”
Among the physiological benefits of HIIT are the body’s increased ability to use oxygen and insulin, as well as arteries that are more elastic than continuous moderate exercise can achieve.
By making blood vessels better able to expand, HIIT can improve the cardiovascular system’s ability to respond to added exertion. Oxygen-carrying blood can flow more smoothly through arteries that are wide open, which also reduces the risk of a vessel-blocking clot.
via Blogger http://bit.ly/1JBIFTM
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