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    <title>Ergebnis für Versionen - 3028700</title>
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    <item>
      <title>Wirkung von LHTL auf die Herzfunktionen im Flachland</title>
      <pubDate>Thu, 01 Jan 1998 05:37:25 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/4002819</link>
      <guid>https://sponet.de/sponet/Record/4002819</guid>
      <author>Liu, Y.</author>
      <author>Steinacker, J. M.</author>
      <author>Dehnert, C.</author>
      <author>Menold, E.</author>
      <author>Baur, S.</author>
      <author>Lormes, W.</author>
      <author>Lehmann, M.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Triathlon</dc:subject>
      <dc:subject>Live High - Train Low</dc:subject>
      <dc:subject>Ausdauer</dc:subject>
      <dc:subject>Herz</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>Liu, Y.</dc:creator>
      <dc:creator>Steinacker, J. M.</dc:creator>
      <dc:creator>Dehnert, C.</dc:creator>
      <dc:creator>Menold, E.</dc:creator>
      <dc:creator>Baur, S.</dc:creator>
      <dc:creator>Lormes, W.</dc:creator>
      <dc:creator>Lehmann, M.</dc:creator>
      <content:encoded><![CDATA[Living high-training low (LHTL), living at high altitude and training at sea level, is reported to be beneficial in enhancing physical performance. Effect of LHTL on cardiac function which is one of major determinants in performance, however, was not examined. To address this issue, 21 well-trained triathletes divided into control (n = 10, living and training at sea level) and LHTL group (living at 1980 m altitude > or = 12 hrs/day and training at sea level) were Doppler echocardiographically examined before and at the end of the two-week program. Heart rate and blood pressure did not change in both groups. At end of the training, left ventricular endsystolic diameter of LHTL group was smaller than that of controls (32 vs 34 mm, P < 0.05). Shortening fraction and ejection fraction in LHTL group increased by 9% and 17 %, respectively, P < 0.05. Preejection period/ejection time was more greatly reduced in LHTL group (P < 0.05). Stroke volume and cardiac output in LHTL increased. Diastolic function was not significantly affected by LHTL. These results suggest that LHTL produced an improvement of systolic function underlined by incremented left ventricular contractility, which might be associated with increased beta-adrenergic receptor or an improved myocardial energy utilization. ]]></content:encoded>
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    <item>
      <title>Wirkung von "Leben in der Höhe - Trainieren im Flachland" auf die Herzfunktionen im Flachland</title>
      <pubDate>Thu, 01 Jan 1998 05:37:25 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/3028700</link>
      <guid>https://sponet.de/sponet/Record/3028700</guid>
      <author>Liu, Y.</author>
      <author>Steinacker, J. M.</author>
      <author>Dehnert, C.</author>
      <author>Menold, E.</author>
      <author>Baur, S.</author>
      <author>Lormes, W.</author>
      <author>Lehmann, M.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Höhenhaus</dc:subject>
      <dc:subject>Hypoxie</dc:subject>
      <dc:subject>Simulation</dc:subject>
      <dc:subject>Herz</dc:subject>
      <dc:subject>Funktion</dc:subject>
      <dc:subject>Triathlon</dc:subject>
      <dc:subject>Ausdauer</dc:subject>
      <dc:subject>Training</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>Liu, Y.</dc:creator>
      <dc:creator>Steinacker, J. M.</dc:creator>
      <dc:creator>Dehnert, C.</dc:creator>
      <dc:creator>Menold, E.</dc:creator>
      <dc:creator>Baur, S.</dc:creator>
      <dc:creator>Lormes, W.</dc:creator>
      <dc:creator>Lehmann, M.</dc:creator>
      <content:encoded><![CDATA[21 gut trainierte Triathleten wurden in eine Kontrollgruppe (n=10, Leben und Trainieren im Flachland) und eine Untersuchungsgruppe/LHTL (n=11, Leben in Höhe,1980 m > 12 Std./Tag und Trainieren im Flachland) eingeteilt und vor und nach einem 2wöchigem Pogramm echokardiographisch (Doppler) untersucht. 
In beiden Gruppen veränderten sich Blutdruck und HF nicht.Am Ende des Trainings war der endsystolische Durchmesser des linken Ventrikels in der LHTL-gruppe geringer als bei den Kontrollpersonen (32 zu 34 mm, p<0.05). Verkürzungsfraktion und Austreibungsfraktion erhöhten sich in der LHTL-gruppe um 9 bzw. 17%, P<0.05. Voraustreibungsperiode/Austreibungszeit war in der LHTL-Gruppe mehr vermindert, P<0.05). Schlagvolumen und Herzminutenvolumen waren in der LHTL-Gruppe erhöht. Die Diastole war durch LHTL nicht signifikant beeinträchtigt.]]></content:encoded>
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