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    <title>Ergebnis für Versionen - 4004269</title>
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    <item>
      <title>Immunität bei Sportlern</title>
      <pubDate>Mon, 01 Jan 1996 01:21:45 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/4004269</link>
      <guid>https://sponet.de/sponet/Record/4004269</guid>
      <author>Pedersen, B. K.</author>
      <author>Rohde, T.</author>
      <author>Zacho, M.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Immunität</dc:subject>
      <dc:subject>Infektion</dc:subject>
      <dc:subject>Übertraining</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>Pedersen, B. K.</dc:creator>
      <dc:creator>Rohde, T.</dc:creator>
      <dc:creator>Zacho, M.</dc:creator>
      <content:encoded><![CDATA[It has become clear that the immune system responds to increased physical activity and may be given some of the credit for exercise-related reduction in illness. In contrast, it has repeatedly been shown that intense exercise causes immunosuppression. In essence the immune system is enhanced during moderate and severe exercise, and only intense long-duration exercise is followed by immunodepression. The latter include suppressed concentration of lymphocytes, suppressed natural killer and lymphokine activated killer cytotoxicity and secretory IgA in mucosa. Whether or not the "open window" in the immune system occurs is dependent on the intensity and duration of exercise. One reason for the "overtraining effect" seen in elite athletes could be that this window of opportunism for pathogens is longer and the degree of immunosuppression more pronounced. It is being hypothesized that severe immunodepression may occur if athletes does not allow the immune system to recover, but initiate a new bout of exercise while still immunodepressed. It has also been suggested that neutrophils serve as a last line of defence. The removal of this back-up system following extreme activity would be compatible with the propensity of "overtrained" individuals to develop upper respiratory tract infections.]]></content:encoded>
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    <item>
      <title>Immunität bei Sportlern</title>
      <pubDate>Mon, 01 Jan 1996 01:21:45 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/3026395</link>
      <guid>https://sponet.de/sponet/Record/3026395</guid>
      <author>Pedersen, P. K.</author>
      <author>Rohde, T.</author>
      <author>Zacho, M.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Leistungssport</dc:subject>
      <dc:subject>Immunität</dc:subject>
      <dc:subject>Relation</dc:subject>
      <dc:subject>Infektion</dc:subject>
      <dc:subject>Blut</dc:subject>
      <dc:subject>Zelle</dc:subject>
      <dc:subject>Belastung</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>Pedersen, P. K.</dc:creator>
      <dc:creator>Rohde, T.</dc:creator>
      <dc:creator>Zacho, M.</dc:creator>
      <content:encoded><![CDATA[Während das Immunsystem durch moderate und starke Belastung gestärkt wird,  hat intensive langanhaltende körperliche Belastung wie im Leistungssport eine Schwächung des Immunsystems (Immunosuppression) zur Folge. Dies äußerst sich z.B. in einer unterdrückten bzw. abgeschwächten Konzentration von Lymphozyten, natürlichen Killerzellen sowie lymphokinaktivierter Killerzytotoxizität.
Ob diese Lücken in der Immmunität auftreten hängt in erster Linie von der Intensität und der Dauer der Belastung ab. vermieden werden kann dies, wenn dem Immunsystem nach derartigen Belastungen ausreichend Zeit zur Wiederherstellung eingeräumt wird. Häufig jedoch werden erneut intensive Belastungen absolviert, während die Immunsuppression aus vorangegangener Belastung noch anhält.]]></content:encoded>
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