Relationships between Training Loads and Selected Blood Parameters in Professional Soccer Players during a 12-Day Sports Camp

Łukasz Radzimiński, Zbigniew Jastrzębski, Guillermo F. López-Sánchez, Andrzej Szwarc, Henryk Duda, Aleksander Stuła, Jacek Paszulewicz and Paul Dragos
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Łukasz Radzimiński: Department of Physiology, Gdansk University of Physical Education and Sport, K. Górskiego 1, 80-336 Gdansk, Poland
Zbigniew Jastrzębski: Department of Physiology, Gdansk University of Physical Education and Sport, K. Górskiego 1, 80-336 Gdansk, Poland
Guillermo F. López-Sánchez: Faculty of Sport Sciences, University of Murcia, 30720 Murcia, Spain
Andrzej Szwarc: Department of Sport Sciences, Gdansk University of Physical Education and Sport, K. Górskiego 1, 80-336 Gdansk, Poland
Henryk Duda: Department of Sport Sciences, Krakow University of Physical Education, 31-571 Kraków, Poland
Aleksander Stuła: Department of Physical Education and Physiotherapy, Opole University of Technology, 45-758 Opole, Poland
Jacek Paszulewicz: Bałtyk Gdynia Football Club, 81-538 Gdynia, Poland
Paul Dragos: Faculty of Geography Tourism and Sport, University of Oradea, 410087 Oradea, Romania

IJERPH, 2020, vol. 17, issue 22, 1-10

Abstract: The main purpose of this study is to assess the relations between training loads and selected blood parameters in professional soccer players during a preseason sports camp. Fifteen professional soccer players (age: 24.3 ± 5.25 year; height: 182.6 ± 6.75 cm; weight: 76.4 ± 6.72 kg) participated in the 12-day training camp. All the training sessions and friendly games were accurately analyzed with a GPS system. Blood samples were taken from the players and analyzed before the camp (PRE), in the middle (MID), and one day after the camp (POST). Mean total distance covered by the players during the camp was 85,205 ± 2685 m, high-intensity running 12,454 ± 1873 m, and sprinting 639 ± 219 m. The highest aspartate transaminase (AST), lactate dehydrogenase (LDH), creatine kinase (CK), and C-reactive protein (CRP) values were observed after six days of the camp. The application of intensive training during a 12-day sports camp can be associated with chronic muscle pain with high activity of some blood enzymes (CK, AST) and a high concentration of myoglobin (Mb). During training camps longer than 10 days, it would be necessary to apply, every second or third day, one day of rest, and the training load should not exceed two units every day.

Keywords: muscle damage; soccer; preseason; time-motion analysis; training loads (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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