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Träfflista för sökning "WFRF:(Koehler Karsten) srt2:(2011-2014)"

Sökning: WFRF:(Koehler Karsten) > (2011-2014)

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1.
  • Sperlich, Billy, et al. (författare)
  • Effects of 5 Weeks High Intensity Interval Training vs. Volume Training in 14-Year Old Soccer Players
  • 2011
  • Ingår i: Journal of Strength and Conditioning Research. - Philadelphia : Lippincott Williams & Wilkins. - 1064-8011 .- 1533-4287. ; 25:5, s. 1271-1278
  • Tidskriftsartikel (refereegranskat)abstract
    • High intensity interval training (HIIT) in junior and adult soccer has been shown to improve oxygen uptake (VO2) and enhance soccer performance. The main purpose of the present study was to examine the short term effects of a 5-week HIIT vs. high volume training (HVT) program in 14-year-old soccer players regarding the effects on VO2max and 1000m time (T1000) as well as on sprinting and jumping performance. In a 5-week period, 19 male soccer players with a mean (SD) age of 13.5±0.4 years performed HIIT at close to ~90% of maximal heart rate. HVT intensity was set at 60-75% of maximal heart rate. VO2max increased significantly (7.0%) from pre to post in HIIT but not after HVT. T1000 decreased significantly following HIIT (~-10s vs. ~-5s in HVT). Sprint performance increased significantly in both groups from pre to post testing without any changes in jumping performance.
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2.
  • Sperlich, Billy, et al. (författare)
  • Table tennis: Cardio-respiratory and metabolic analysis of match and exercise in elite junior national players
  • 2011
  • Ingår i: International Journal of Sports Physiology and Performance. - : Human Kinetics. - 1555-0265 .- 1555-0273. ; 6:2, s. 234-242
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose: The aim of the study was to determine the cardiorespiratory and metabolic characteristics during intense and moderate table tennis (TT) training, as well as during actual match play conditions. Methods: Blood lactate concentration (Lac), heart rate (HR, beats per minute [bpm]), oxygen uptake (VO(2)), and energy expenditure (EE) in 7 male participants of the German junior national team (age: 14 +/- 1 y, weight: 60.5 +/- 5.6 kg height; 165 +/- 8 cm) were examined during six training sessions (TS) and during an international match. The VO(2) was measured continuously with portable gas analyzers. Lac was assessed every 1 to 3 min during short breaks. Results: Mean (peak) values for Lac, HR, VO(2), and EE during the TS were 1.2 +/- 0.7 (4.5) mmol.L(-1), 135 +/- 18 (184) bpm, 23.5 +/- 7.3 (43.0) mL.kg(-1).min-(1), and 6.8 +/- 2.0 (11.2) METs, respectively. During match play, mean (peak) values were 1.1 +/- 0.2 (1.6) mmol.L(-1), 126 +/- 22 (189) bpm, 25.6 +/- 10.1 (45.9) mL.kg(-1).min(-1), and 4.8 +/- 1.4 (9.6) METs, respectively. Conclusions: For the first time, cardiorespiratory and metabolic data in elite junior table tennis have been documented demonstrating low cardiorespiratory and metabolic demands during TT training and match play in internationally competing juniors.
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