title: Changes in Endurance Performance in Young Athletes During Two Training Seasons.
abstract: The aim of the study was to assess changes in endurance performance in young runners (females and males) during two training seasons. It involved 19 male and 16 female athletes aged 15-17 specializing in track-and-field middle and long distances runs. The following parameters were measured three times during the training season: maximal oxygen uptake, running economy, and the level of the second ventilatory threshold. Training volume and intensity during each season were analyzed within an 8-week period prior to the exercise tests. The volume and intensity of training at various stages of preparation in both seasons were similar. During the first year of observation, significant improvements in relative volume of maximal oxygen uptake were reported both in female and male athletes. During the second training season, it was found that running economy improved both in women and men, with no changes in maximal oxygen uptake. The same (in terms of volume and intensity) endurance training carried out with young runners during two consecutive training seasons can result in different training effects.
authors.affiliation: Department of Physiology and Biochemistry, Faculty of Physical Education and Sports, University of Physical Education, Krakow, Poland.
authors.forename: Łukasz
authors.initials: Ł
authors.lastname: Tota
authors.affiliation: Department of Physiology and Biochemistry, Faculty of Physical Education and Sports, University of Physical Education, Krakow, Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Maciejczyk
authors.affiliation: Department of Physiology, the Jerzy Kukuczka Academy of Physical Education in Katowice, Poland.
authors.forename: Ilona
authors.initials: I
authors.lastname: Pokora
authors.affiliation: Department of Physiology and Biochemistry, Faculty of Physical Education and Sports, University of Physical Education, Krakow, Poland.
authors.forename: Jerzy
authors.initials: J
authors.lastname: Cempla
authors.affiliation: Department of Physiology and Biochemistry, Faculty of Physical Education and Sports, University of Physical Education, Krakow, Poland.
authors.forename: Wanda
authors.initials: W
authors.lastname: Pilch
authors.affiliation: Department of Physiology and Biochemistry, Faculty of Physical Education and Sports, University of Physical Education, Krakow, Poland.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Pałka
keywords: aerobic performance; middle- and long-distance running; physical training; ventilatory threshold
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