J Heller
Charles University in Prague
5 Papers
17 Citations
J Heller is an academic researcher from Charles University in Prague. The author has contributed to research in topics: Exercise physiology & Wingate test. The author has an hindex of 4, co-authored 5 publications.
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Papers
Ventilatory threshold and work efficiency during exercise on cycle and paddling ergometers in young female kayakists
Václav Bunc,J Heller +1 more
TL;DR: Significant correlations were found between maximal-performanceVO2 (ml · kg−1 · min−1) and performance at Thvent during paddling and race performance and caution is suggested in the interpretation of physiological variables that may be sensitive to training status.
13
Ventilatory threshold and mechanical efficiency in endurance runners
TL;DR: It is concluded that in highly trained endurance runners the times needed to attain the optimal conditions for sports performance differ from the point of view of special speed training and from the view of mechanical-metabolic readiness.
5
All out anaerobic capacity tests on cycle ergometers. A comparative study on men and women.
TL;DR: In this paper, the effects of the braking force on the results of an anaerobic capacity test derived from the Wingate test (an all out 45 s exercise on a Monark 864 cycle ergometer against a given force at the fastest velocity from the beginning to the end of the test).
Force-velocity relationship and maximal power on a cycle ergometer. Correlation with the height of a vertical jump.
TL;DR: The highest indices of force P0, velocity V0 and maximal anaerobic power (Wmax) were observed in the power athletes and there was a significant relationship between vertical jump height and Wmax related to body mass.
Energy cost of running in similarly trained men and women.
TL;DR: Differences in sports performance between similarly trained men and women are related to differences in V O 2max, and the evaluation ofC as an additional characteristic during laboratory tests may help to ascertain, along with other parameters, not only the effectiveness of the training procedure, but also to evaluate the technique performed.