2018, Volume 10, Issue 4
Supramaximal intermittent exercise ‒ A comparison of effects on anaerobic and aerobic capacity in trained prepubertal boys and trained adults
1Faculty of Rehabilitation and Kinesiology, Gdansk University of Physical Education and Sport
Author for correspondence: Anna Szczęsna-Kaczmarek; Faculty of Rehabilitation and Kinesiology, Gdansk University of Physical Education and Sport; email: firstname.lastname@example.org
Background: The aim of this study was to investigate possible variations in trained children and adults in physiological, metabolic and performance factors in response to supramaximal intermittent exercise.
Material and methods: Fourteen adult trained men (eight long-distance runners and six sprinters) and seven 12-year-old trained boys performed two exercise tests on separate days: incremental cycloergometric test to determine VO2 max, AT and a supramaximal intermittent exercise (SMIE) test to determine peak power, anaerobic and aerobic capacity and also blood acidification.
Results: The results have shown similar relative values of VO2 max and total work performed in WAnT between boys and adult (p > 0.05) and significant differences in power peak between boys and sprinters. Total work in SMIE was performed at the energy cost from aerobic and anaerobic metabolism in boys and sprinters respectively: aerobic – 49% and 10%, glycolytic – 31% and 70%, phosphagenic – 20% and 20%. There were significant differences between groups in [La-], with no changes in parameters of acidification.
Conclusions: Differences between boys and adults shown under SMIE conditions are important in the practical conduct of the training appropriate to the metabolic and physical capacity of peri-pubertal boys.
Key words: repeated 30-sWAnT, ATP-PCr and glycolytic processes, blood lactate, acid-base balance