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- $Unique_ID{BRK02134}
- $Pretitle{}
- $Title{Regular Exercise and the Immune System}
- $Subject{walking exercise cold immune system lymphocytes lymphocyte killer
- cells cortisol immunoglobulins immunoglobulin}
- $Volume{}
- $Log{
- Exercise has Overall Benefits*0003209.scf}
-
- Copyright (c) 1993 Tribune Media Services, Inc.
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-
- Regular Exercise and the Immune System
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- QUESTION: I have a very active woman friend whose exercise activity consists
- of walking. She is quite dedicated, and maintains a regular schedule of about
- an hour's walk everyday except Sunday. She claims she hasn't had a cold in
- years since she started this program. Do you believe her exercise has
- anything to do with her ability to avoid colds?
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- ANSWER: The positive benefits of regular exercise are usually described as
- increased muscular strength and flexibility, expanded cardiovascular reserves,
- weight management, and even emotional and psychological advantages. Now it
- seems as if we should add another important benefit, a stimulation of the
- immune system that helps reduce the number of colds and flu episodes. The
- experience your woman friend relates has already been seen in several test
- groups, including long distant runners or marathoners as well as those who
- only participate in moderate exercise programs. The exercise is not limited
- to walking, for other aerobic exercises, including swimming, moderate jogging,
- and cycling, probably benefit participants as well. In one study, those who
- exercised regularly, briskly walking for 45 minutes 5 times a week, were
- found to have only half the number of days with cold and flu symptoms than the
- control group. One of the explanations seems to be in the increased activity
- of lymphocytes called "killer cells" in the exercising group, as well as an
- increase in the amount of immunoglobulins that were found in the blood.
- Moderation in the amount and extent of the exercise program seems to be an
- important factor, for when the activity becomes stressful, the body produces
- increased amounts of a substance called cortisol, which can reduce the ability
- of certain immune cells to work properly. It certainly looks like your friend
- is on the right track (hah), and the best advice I can offer you is to join
- with her, and share in this healthful experience.
-
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-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
-