Evidence map›Paper›PMID 34063524›Full record

ArticleJournal of clinical medicine2021

The Effect of High-Intensity Interval Training Periods on Morning Serum Testosterone and Cortisol Levels and Physical Fitness in Men Aged 35-40 Years.

Tadeusz Ambroży, Łukasz Rydzik, Zbigniew Obmiński, Wiesław Błach, Natalia Serafin, Blanka Błach, Jarosław Jaszczur-Nowicki, Mariusz Ozimek

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Journal of clinical medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07325396 (Effectiveness of Neuromuscular Training Added to Routine Practice on Fatigue and Stress Biomarkers in Professional Esports Players), which is not on this map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
3.2field-weighted citation impact, top 7% of its field
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.

NCT07325396 nanot yet recruitingnot on this mapstarted 2026, after this paper: background citation

Effectiveness of Neuromuscular Training Added to Routine Practice on Fatigue and Stress Biomarkers in Professional Esports Players: A Randomized Controlled Trial

TypeinterventionalSponsorYeditepe UniversityRan2026 to 2026Enrolled24ConditionsEsports, Esports PlayersArmsNeuromuscular Training, Physical Activity Counseling
3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.

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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

8 authors at 4 institutions in 1 country.

Tadeusz AmbrożyInstitute of Sports Sciences, University of Physical Education, 31-571 Krakow, Poland.ORCID 0000-0001-7361-9478
Łukasz RydzikInstitute of Sports Sciences, University of Physical Education, 31-571 Krakow, Poland.ORCID 0000-0001-7956-7488
Zbigniew ObmińskiDepartment of Endocrinology, Institute of Sport-National Research Institute, 01-982 Warsaw, Poland.
Wiesław BłachFaculty of Physical Education & Sport, University School of Physical Education, 51-612 Wroclaw, Poland.
Natalia SerafinFaculty of Physical Education and Sport, Institute of Social Sciences, University of Physical Education in Krakow, 31-571 Kraków, Poland.
Blanka BłachFaculty of Physical Education & Sport, University School of Physical Education, 51-612 Wroclaw, Poland.
Jarosław Jaszczur-NowickiDepartment of Tourism, Recreation and Ecology, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland.ORCID 0000-0001-5256-1406
Mariusz OzimekInstitute of Sports Sciences, University of Physical Education, 31-571 Krakow, Poland.ORCID 0000-0002-9282-5725
University School of Physical Education in Kraków · PLWroclaw University of Health and Sport Sciences · PLInstytut Sportu · PLUniversity of Warmia and Mazury in Olsztyn · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIntensive physical activity largely modulates resting concentrations of blood cortisol (C) and testosterone (T) and their molar ratio, which is defined as the anabolic-catabolic index and expressed as T/C × 10

methodsThe experiment was conducted on a group of 30 healthy men, divided into control and experimental groups. The experimental group followed a high-intensity 8-week training program, which included three sessions per week, each of them lasting 1 h and consisting of intensive-interval exercises followed by strength circuit exercises. The controls did not change their previous recreational physical activity. T, C, and T/C × 10

resultsThere were statistically significant increases in T (by 36.7%) and T/C × 10

conclusionsHigh-intensity interval training, continued over an 8-week period, modulates (significantly and positively) the balance between testosterone and cortisol levels and improves physical capacity in men aged 35-40 years.

Indexed as

bloodhormonesmenphysical performancetraining period

Identifiers

PMID34063524
PMCPMC8156527
OpenAlexW3162671353

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.