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    <item>
      <title>Höhentraining auf 2690 m erhöht nicht die Gesamthämoglobinmasse oder die VO2max im Flachland bei Weltmeistern im Bahnradfahren</title>
      <pubDate>Thu, 01 Jan 1998 22:32:34 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/4004781</link>
      <guid>https://sponet.de/sponet/Record/4004781</guid>
      <author>Gore, C. J.</author>
      <author>Hahn, A.</author>
      <author>Rice, A.</author>
      <author>Bourdon, P.</author>
      <author>Lawrence, S.</author>
      <author>Walsh, C.</author>
      <author>Stanef, T.</author>
      <author>Barnes, P.</author>
      <author>Parisotto, R.</author>
      <author>Martin, D.</author>
      <author>Pyne, D.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Blut</dc:subject>
      <dc:subject>Bahnradsport</dc:subject>
      <dc:subject>Radsport</dc:subject>
      <dc:subject>O2-Aufnahme</dc:subject>
      <dc:subject>Leistung</dc:subject>
      <dc:subject>Höhentraining</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>Gore, C. J.</dc:creator>
      <dc:creator>Hahn, A.</dc:creator>
      <dc:creator>Rice, A.</dc:creator>
      <dc:creator>Bourdon, P.</dc:creator>
      <dc:creator>Lawrence, S.</dc:creator>
      <dc:creator>Walsh, C.</dc:creator>
      <dc:creator>Stanef, T.</dc:creator>
      <dc:creator>Barnes, P.</dc:creator>
      <dc:creator>Parisotto, R.</dc:creator>
      <dc:creator>Martin, D.</dc:creator>
      <dc:creator>Pyne, D.</dc:creator>
      <content:encoded><![CDATA[Haemoglobin mass (Hb mass), maximum oxygen consumption (VO2max), simulated 4000 m individual pursuit cycling performance (IP4000), and haematological markers of red blood cell (RBC) turnover were measured in 8 male cyclists before and after (A) 31 d of altitude training at 2690 m. The dependent variables were measured serially after altitude on d A3-4, A8-9 and A20-21. There was no significant change in Hb mass over the course of the study and VO2max at d A9 was significantly lower than the baseline value (79.3 +/- 0.7 versus 81.4 +/- 0.6 ml x kg(-1) x min(-1), respectively). No increase in Hb mass or VO2max was probably due to initial values being close to the natural physiological limit with little scope for further change. When the IP4000 was analysed as a function of the best score on any of the three test days after altitude training there was a 4% improvement that was not reflected in a corresponding change in VO2max or Hb mass. RBC creatine concentration was significantly reduced after altitude training, suggesting a decrease in the average age of the RBC population. However, measurement of reticulocyte number and serum concentrations of erythropoietin, haptoglobin and bilirubin before and after altitude provided no evidence of increased RBC turnover. The data suggest that for these elite cyclists any benefit of altitude training was not from changes in VO2max or Hb mass, although this does not exclude the possibility of improved anaerobic capacity.]]></content:encoded>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Höhentraining auf 2690 m erhöht die Gesamthämoglobinmasse oder die VO2max im Flachland bei Weltmeistern im Radsport nicht</title>
      <pubDate>Thu, 01 Jan 1998 22:32:34 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/4002809</link>
      <guid>https://sponet.de/sponet/Record/4002809</guid>
      <author>Gore, C. J.</author>
      <author>Hahn, A.</author>
      <author>Rice, A.</author>
      <author>Bourdon, P.</author>
      <author>Lawrence, S</author>
      <author>Walsh, C</author>
      <author>Stanef, T.</author>
      <author>Barnes, P.</author>
      <author>Parisotto, R.</author>
      <author>Martin, D.</author>
      <author>Pyne, D.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Bahnradsport</dc:subject>
      <dc:subject>Blut</dc:subject>
      <dc:subject>Höhentraining</dc:subject>
      <dc:subject>maximal</dc:subject>
      <dc:subject>O2-Aufnahme</dc:subject>
      <dc:subject>Radsport</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>Gore, C. J.</dc:creator>
      <dc:creator>Hahn, A.</dc:creator>
      <dc:creator>Rice, A.</dc:creator>
      <dc:creator>Bourdon, P.</dc:creator>
      <dc:creator>Lawrence, S</dc:creator>
      <dc:creator>Walsh, C</dc:creator>
      <dc:creator>Stanef, T.</dc:creator>
      <dc:creator>Barnes, P.</dc:creator>
      <dc:creator>Parisotto, R.</dc:creator>
      <dc:creator>Martin, D.</dc:creator>
      <dc:creator>Pyne, D.</dc:creator>
      <content:encoded><![CDATA[Haemoglobin mass (Hb mass), maximum oxygen consumption (VO2max), simulated 4000 m individual pursuit cycling performance (IP4000), and haematological markers of red blood cell (RBC) turnover were measured in 8 male cyclists before and after (A) 31 d of altitude training at 2690 m. The dependent variables were measured serially after altitude on d A3-4, A8-9 and A20-21. There was no significant change in Hb mass over the course of the study and VO2max at d A9 was significantly lower than the baseline value (79.3 +/- 0.7 versus 81.4 +/- 0.6 ml x kg(-1) x min(-1), respectively). No increase in Hb mass or VO2max was probably due to initial values being close to the natural physiological limit with little scope for further change. When the IP4000 was analysed as a function of the best score on any of the three test days after altitude training there was a 4% improvement that was not reflected in a corresponding change in VO2max or Hb mass. RBC creatine concentration was significantly reduced after altitude training, suggesting a decrease in the average age of the RBC population. However, measurement of reticulocyte number and serum concentrations of erythropoietin, haptoglobin and bilirubin before and after altitude provided no evidence of increased RBC turnover. The data suggest that for these elite cyclists any benefit of altitude training was not from changes in VO2max or Hb mass, although this does not exclude the possibility of improved anaerobic capacity. ]]></content:encoded>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Höhentraining auf 2690 m erhöht nicht die Gesamt-Hämoglobinmasse oder die VO2max im Flachland bei Weltmeistern im Bahnradsport</title>
      <pubDate>Thu, 01 Jan 1998 22:32:34 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/3028975</link>
      <guid>https://sponet.de/sponet/Record/3028975</guid>
      <author>Gore, C.</author>
      <author>Craig, N.</author>
      <author>Hahn, A. A.</author>
      <author>Rice, A.</author>
      <author>Bourdon, P.</author>
      <author>Lawrence, S.</author>
      <author>Walsh, C.</author>
      <author>Stanef, T.</author>
      <author>Barnes, P.</author>
      <author>Parisotto, R.</author>
      <author>Martin, D.</author>
      <author>Pyne, D.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Bahnradsport</dc:subject>
      <dc:subject>Radsport</dc:subject>
      <dc:subject>Ausdauer</dc:subject>
      <dc:subject>Höhentraining</dc:subject>
      <dc:subject>Blut</dc:subject>
      <dc:subject>Körper</dc:subject>
      <dc:subject>O2-Aufnahme</dc:subject>
      <dc:subject>maximal</dc:subject>
      <dc:subject>EPO</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>Gore, C.</dc:creator>
      <dc:creator>Craig, N.</dc:creator>
      <dc:creator>Hahn, A. A.</dc:creator>
      <dc:creator>Rice, A.</dc:creator>
      <dc:creator>Bourdon, P.</dc:creator>
      <dc:creator>Lawrence, S.</dc:creator>
      <dc:creator>Walsh, C.</dc:creator>
      <dc:creator>Stanef, T.</dc:creator>
      <dc:creator>Barnes, P.</dc:creator>
      <dc:creator>Parisotto, R.</dc:creator>
      <dc:creator>Martin, D.</dc:creator>
      <dc:creator>Pyne, D.</dc:creator>
      <content:encoded><![CDATA[Von 8 männlichen Bahnradsportlern ( alle Goldmeaillengewinner und/oderWeltrekordhalter bei den Senioren oder Junioren)wurden vor und nach einem 31tägigem Höhentraining (2690m) Hämoglobinmasse (Hb Masse), VO2max, Individualleistung in einem simulierten 4000-m-Verfolgungsfahren (IP4000) und hämatologische Parameter der Erythrozytenbildung (RBC) ermittelt. Die abhängigen Variablen wurden am 3.-4. Tag, 8.-9. Tag und 20.-21. Tag nach dem Höhentraining untersucht.

Ergebnisse:
- Keine sign. Veränderung der Hb-Masse im Verlauf der Untersuchung, VO2max am 9. Tag sign. niedriger als die Ausgangswerte.
- Mittlere Gesamtarbeit für IP4000 blieb unverändert, die höchste Gesamtarbeit an jedem der 3 Testtage nach dem Höhentraining war sign. erhöht (+4.3%), die niedrigste Gesamtarbeit war nicht sign. vermindert (-2.4%).
- RBC-Kreatinspiegel war nach dem Höhentraining sign. erniedrigt, was auf eine Abnahme des Durchscnittsalters der RBC-Population verweist.
- Die Messung der Retikulozytenzahl und von Serum-EPO, -Haptoglobin und -Bilirubin vor und nach dem Höhentraining ergab keinen Nachweis einer erhöhten RBC-Bildung.
Es wird geschlußfolgert, daß die bekannte Wirkung des Höhentrainings, die Bildung der Eyrthrozyten zu stimulieren, für die untersuchte Population nicht eintritt. Es bleibt möglich, daß Höhentraining zur Verbesserung der Leistung im Flachland durch andere Mechanismen beiträgt, wie der Anstieg der anaeroben Kapazität. ]]></content:encoded>
      <slash:comments>0</slash:comments>
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