Ventilatory threshold and work efficiency during exercise on cycle and paddling ergometers in young female kayakists |
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Authors: | V Bunc J Heller |
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Institution: | (1) Faculty of Physical Education and Sports, Charles University, Prague, Czech Republic;(2) Faculty of Physical Education and Sports, Charles University, J. Martiho 31, CZ-16252 Prague 6, Czech Republic |
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Abstract: | The aim of this study was to assess the effects of increasing specific (paddling erogmeter) and non-specific (cycle ergometer) exercise on parameters relating to the ventilatory threshold (Thvent) and work efficiency in 11 young female flat-water kayakists. When these trained subjects were tested using non-specific workloads, their oxygen uptake (VO2) values at Thvent, as a percentage ofVO2max (%VO2max), were close to those of untrained subjects 74.2 (5.6) %VO2max, mean (SD)]. However, when we tested the same subjects using specific exercise, we recorded values typical of highly trained athletes 84.8 (4.7) %VO2max). For the non-specific exercise on the cycle erogmeter, we recorded work efficiency values close to those of untrained subjects 22.3 (2.5) %]; however, for the specific exercise on the paddling ergometer, we recorded much lower values 13.4 (3.0) %] both at the level of Thvent. The work efficiency at two warm-up submaximal exercise loads on the paddling ergometer was non-significantly lower than values at Thvent 12.3 (2.8) % and 12.9 (2.9) % respectively]. Significant correlations were found between maximal-performanceVO2 (ml · kg–1 · min–1) and performance at Thvent during paddling and race performance (0.623, 0.630 and 0.648 respectively, allP<0.05). Because the results of both specific and non-specific submaximal exercise tests are different, we suggest caution in the interpretation of physiological variables that may be sensitive to training status. The evaluation of Thvent and work efficiency as supplementary parameters during laboratory studies enables the determination of the effectiveness of the training process and the specific adaptation of the subjects. |
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Keywords: | Exercise testing Female athletes Cycle and paddling ergometry Ventilatory threshold Work efficiency |
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