Evidence map›Paper›PMID 41372984›Full record

ArticleBMC sports science, medicine & rehabilitation2025

The impact of direct pre-competition preparation on changes in metabolite, vitamin, and hormonal biomarker concentrations in professional female volleyball players.

Artur Płonka, Łukasz Rydzik, Mateusz Mardyła, Kamil Sokołowski, Anna Kurkiewicz-Piotrowska, Olga Czerwińska-Ledwig, Tomasz Pałka, Tadeusz Ambroży, Wojciech Czarny, Wojciech Bajorek and 1 more

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Article in BMC sports science, medicine & rehabilitation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Artur PłonkaInstitute of Physical Culture Studies, College of Medical Sciences, University of Rzeszow, Rzeszów, 35-959, Poland.
Łukasz RydzikInstitute of Sports Sciences, University of Physical Culture, Kraków, 31-571, Poland. lukasz.rydzik@awf.krakow.pl.
Mateusz MardyłaDepartment of Physiology and Biochemistry, Faculty of Physical Education and Sport, University of Physical Culture, Kraków, 31-571, Poland.
Kamil SokołowskiInstitute of Sports Sciences, University of Physical Culture, Kraków, 31-571, Poland.
Anna Kurkiewicz-PiotrowskaInstitute for Basic Sciences, Faculty of Physiotherapy, University of Physical Culture, Krakow, 31-571, Poland.
Olga Czerwińska-LedwigInstitute for Basic Sciences, Faculty of Physiotherapy, University of Physical Culture, Krakow, 31-571, Poland.
Tomasz PałkaDepartment of Physiology and Biochemistry, Faculty of Physical Education and Sport, University of Physical Culture, Kraków, 31-571, Poland.
Tadeusz AmbrożyInstitute of Sports Sciences, University of Physical Culture, Kraków, 31-571, Poland.
Wojciech CzarnyInstitute of Physical Culture Studies, College of Medical Sciences, University of Rzeszow, Rzeszów, 35-959, Poland.
Wojciech BajorekInstitute of Physical Culture Studies, College of Medical Sciences, University of Rzeszow, Rzeszów, 35-959, Poland.
Paweł KrólInstitute of Physical Culture Studies, College of Medical Sciences, University of Rzeszow, Rzeszów, 35-959, Poland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe training dynamics of professional female volleyball players involve intense pre-competition periods necessitating adaptations to high training loads. This study focuses on the immediate preparation for competition (IPC) analyzing changes in various metabolite, vitamin, and hormonal biomarkers.

methodsTwelve female volleyball players underwent blood tests four times during an 8-week IPC period before top league season in Poland. Biomarkers such as creatine kinase (CK), lactate dehydrogenase (LDH), folic acid, vitamin B12, calcidiol, cortisol, and insulin-like growth factor 1 were measured using standard biochemical protocols. The athletes adhered to a training regimen that included technical and strength training, supplemented with vitamins B and D3.

resultsSignificant changes were observed in the activities of CK and LDH across the measurements, indicating muscle response to training loads. Variations in the concentrations of folic acid and 25-(OH)D3 across the training period were statistically significant. Cortisol levels also showed fluctuations, suggesting hormonal balance shifts in response to training stress. 

conclusionThe study confirms that a well-structured training regimen during the IPC allows for slight modifications in biochemical and hormonal markers without disrupting their balance. Proper supplementation and targeted training loads help maintain optimal vitamin levels in the blood, aiding in overall athlete preparedness and performance stability.

Indexed as

Hormonal biomarkersMetabolic biomarkersTaper phaseVolleyball

Identifiers

PMID41372984
PMCPMC12829243

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LicenceCC BY-NC-ND
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.