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    <item>
      <title>Einfluss der Tretfrequenzen auf die physiologische Reaktion während Ausdauerradfahrens</title>
      <pubDate>Mon, 01 Jan 2001 15:52:36 +0100</pubDate>
      <link>https://www.sponet.de/sponet/Record/3033043</link>
      <guid>https://www.sponet.de/sponet/Record/3033043</guid>
      <author>Lepers, R.</author>
      <author>Millet, G. Y.</author>
      <author>Maffiuletti, N. A.</author>
      <author>Hausswirth, C.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Radsport</dc:subject>
      <dc:subject>Triathlon</dc:subject>
      <dc:subject>Belastungsintensität</dc:subject>
      <dc:subject>Sportphysiologie</dc:subject>
      <dc:subject>Herzfrequenz</dc:subject>
      <dc:subject>O2-Aufnahme</dc:subject>
      <dc:subject>Atmung</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>Lepers, R.</dc:creator>
      <dc:creator>Millet, G. Y.</dc:creator>
      <dc:creator>Maffiuletti, N. A.</dc:creator>
      <dc:creator>Hausswirth, C.</dc:creator>
      <content:encoded><![CDATA[8 gut trainierte Triathleten fuhren dreimal je 30 min bei einer Intensität von 80 % ihrer maximalen aeroben Wattleistung Rad. Der 1. Test wurde bei frei gewählter Tretfrequenz (FCC) absolviert, die zwei anderen bei FCC-20 % und FCC+20 %, was im durchschnittlichen Bereich der gewöhnlichen Tretfrequenzen von Straßenradsportlern lag. Mittlere FCC, FCC-20 % und FCC+20 % betrugen entsprechend 86 (4), 69(3) und 103(5). Während den drei Abschnitten wurden Herzfrequenz (HR), Sauerstoffaufnahme (VO2), Minutenventilation und respiratorischer Koeffizient (R) analysiert (zwischen der 4. und 5., 14. und 15., 29. und 30. Minute).
Ergebnisse:
Ein signifikanter Einfluss der Zeit wurde bei den drei Tretfrequenzen für die Herzfrequenz ermittelt. VO2 und R  waren in der 5. und 15. Minute bei FCC+20 % signifikant größer im Vergleich zu FCC-20 %, jedoch nicht in der 30. Minute.]]></content:encoded>
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    <item>
      <title>Einfluss der Tretfrequenz auf die physiologische Reaktion während Ausdauerradfahrens</title>
      <pubDate>Mon, 01 Jan 2001 15:52:36 +0100</pubDate>
      <link>https://www.sponet.de/sponet/Record/4006035</link>
      <guid>https://www.sponet.de/sponet/Record/4006035</guid>
      <author>Lepers, R.</author>
      <author>Millet, G. Y.</author>
      <author>Maffiuletti, N. A.</author>
      <author>Hausswirth, C.</author>
      <author>Brisswalter, J.</author>
      <dc:format>elektronische Publikation</dc:format>
      <dc:subject>Triathlon</dc:subject>
      <dc:subject>Sportphysiologie</dc:subject>
      <dc:subject>Radsport</dc:subject>
      <dc:subject>O2-Aufnahme</dc:subject>
      <dc:subject>Ermüdung</dc:subject>
      <dc:subject>Belastungsintensität</dc:subject>
      <dc:format>elektronische Publikation</dc:format>
      <dc:creator>Lepers, R.</dc:creator>
      <dc:creator>Millet, G. Y.</dc:creator>
      <dc:creator>Maffiuletti, N. A.</dc:creator>
      <dc:creator>Hausswirth, C.</dc:creator>
      <dc:creator>Brisswalter, J.</dc:creator>
      <content:encoded><![CDATA[This study was undertaken to examine the effect of different pedalling cadences upon various physiological responses during endurance cycling exercise. Eight well-trained triathletes cycled three times for 30 min each at an intensity corresponding to 80% of their maximal aerobic power output. The first test was performed at a freely chosen cadence (FCC); two others at FCC-20% and FCC+20%, which corresponded approximately to the range of cadences habitually used by road racing cyclists. The mean (SD) FCC, FCC-20% and FCC+20% were equal to 86 (4), 69 (3) and 103 (5) rpm respectively. Heart rate (HR), oxygen uptake (VO2), minute ventilation (VE) and respiratory exchange ratio (R) were analysed during three periods: between the 4th and 5th, 14th and 15th, and 29th and 30th min. A significant effect of time (P<0.01) was found at the three cadences for HR, VO2 . The VE and R were significantly (P<0.05) greater at FCC+20% compared to FCC-20% at the 5th and 15th min but not at the 30th min. Nevertheless, no significant effect of cadence was observed in HR and VO2 . These results suggest that, during high intensity exercise such as that encountered during a time-trial race, well-trained triathletes can easily adapt to the changes in cadence allowed by the classical ear ratios used in practice.]]></content:encoded>
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