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    <item>
      <title>Kohlenhydrataufnahme verbessert die Ausdauerleistung während eines simulierten 1stündigen Radzeitfahrens</title>
      <pubDate>Wed, 01 Jan 1997 13:38:26 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/4001887</link>
      <guid>https://sponet.de/sponet/Record/4001887</guid>
      <author>El-Sayed, M. S.</author>
      <author>Balmer, J.</author>
      <author>Rattu, A. J.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Supplementierung</dc:subject>
      <dc:subject>Radsport</dc:subject>
      <dc:subject>Leistung</dc:subject>
      <dc:subject>Kohlenhydrat</dc:subject>
      <dc:subject>Ausdauer</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>El-Sayed, M. S.</dc:creator>
      <dc:creator>Balmer, J.</dc:creator>
      <dc:creator>Rattu, A. J.</dc:creator>
      <content:encoded><![CDATA[This study examined the effect of carbohydrate ingestion on metabolic and performance-related responses during and after a simulated 1 h cycling time trial. Eight trained male cyclists (VO2 peak = 66.5 ml kg-1 min-1) rode their own bicycles mounted on a windload simulator to imitate real riding conditions. At a self-selected maximal pace, the cyclists performed two 1 h rides (separated by 7 days) and were fed either an 8% carbohydrate or placebo solution. The beverages were administered 25 min before (4.5 ml kg-1) and at the end (4.5 ml kg-1) of the ride. With carbohydrate feeding, plasma glucose tended (P = 0.21) to rise before the time trial. Compared with rest, the plasma glucose concentration decreased significantly (P < 0.05) at the end of both rides, with no statistically significant difference being observed between treatments. Thereafter, plasma glucose increased significantly (P < 0.05) at 15 and 30 min into recovery, and was significantly higher at 30 min during the carbohydrate trial compared with the placebo trial. No significant changes in plasma free fatty acids were observed during the ride. However, a significant increase (P < 0.05) in free fatty acids was found at 15 and 30 min into recovery, with no difference between trials. Mean power output was significantly (P < 0.05) greater during the carbohydrate compared with the placebo trial (mean ± s.e.: 277 ± 3 and 269 ± 3 W, respectively). The greater distance covered in the carbohydrate compared with the placebo trial (41.5 ± 1.06 and 41.0 ± 1.06 km, respectively; P < 0.05) was equivalent to a 44 s improvement. We conclude that pre-exercise carbohydrate ingestion significantly increases endurance performance in trained cyclists during a 1 h simulated time trial. Although the mechanism for this enhancement in performance with carbohydrate ingestion cannot be surmised from the present results, it could be related to a higher rate of carbohydrate oxidation, or to favourable effects of carbohydrate ingestion on the central component of fatigue. ]]></content:encoded>
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    <item>
      <title>Kohlenhydrataufnahme verbessert die Ausdauerleistung während eines simulierten Radfahrzeittests über 1 Stunde</title>
      <pubDate>Wed, 01 Jan 1997 13:38:26 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/3026766</link>
      <guid>https://sponet.de/sponet/Record/3026766</guid>
      <author>El-Sayed, M. S.</author>
      <author>Balmer, J.</author>
      <author>Rattu, A. J.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Biochemie</dc:subject>
      <dc:subject>Ernährung</dc:subject>
      <dc:subject>Kohlenhydrat</dc:subject>
      <dc:subject>Leistung</dc:subject>
      <dc:subject>Ausdauer</dc:subject>
      <dc:subject>Supplementierung</dc:subject>
      <dc:subject>Radsport</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>El-Sayed, M. S.</dc:creator>
      <dc:creator>Balmer, J.</dc:creator>
      <dc:creator>Rattu, A. J.</dc:creator>
      <content:encoded><![CDATA[Von 8 trainierten Radsportlern (VO2max66.5 ml/kg/min) wurden ihre eigenen Fahrräder auf einen Windsimulator montiert, um die tatsächlichen Fahrhaltungen zu imitieren. Mit einer selbstgewählten maximalen Geschwindigkeit absolvierten die Probanden 2 Tests über 1 Stunde (Abstand 7 Tage)und nahmen entweder eine 8%ige Kohlenhydratlösung oder ein Plecebo zu sich. Die Getränke wurden 25 min vor (4.5 lm/kg) und am Ende (4.5 ml/kg) der Tests verabreicht.
Ergebnis: Im Kohlenhydrattest wurde im Vergleich zum Placebotest eine Zeitverbesserung bis zu 44 s erreicht.]]></content:encoded>
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