Evidence map›Paper›PMID 30127648›Full record

ArticleOpen access journal of sports medicine2018

Stability in post-seasonal hematological profiles in response to high-competitive match-play loads within elite top-level European soccer players: implications from a pilot study.

Adam L Owen, Marco A Cossio-Bolaños, Gordon Dunlop, Mehdi Rouissi, Moktar Chtara, Nicola Luigi Bragazzi, Karim Chamari

Abstract read
In one paragraph

Article in Open access journal of sports medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
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

7 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
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

7 authors.

Adam L OwenServette Centre for Football Research (SCFR), Servette Football Club, Geneva, Switzerland.
Marco A Cossio-BolañosFaculty of Physical Education, State University of Campinas, Sao Paulo, Brazil.
Gordon DunlopServette Centre for Football Research (SCFR), Servette Football Club, Geneva, Switzerland.
Mehdi RouissiTunisian Research Laboratory, National Centre of Medicine and Science in Sport, Tunis, Tunisia.
Moktar ChtaraTunisian Research Laboratory, National Centre of Medicine and Science in Sport, Tunis, Tunisia.
Nicola Luigi BragazziDepartment of Health Sciences (DISSAL), School of Public Health, University of Genoa, Genoa, Italy, robertobragazzi@gmail.com.
Karim ChamariAthlete Health and Performance Research Centre, ASPETAR, Qatar Orthopedic and Sports Medicine Hospital, Doha, Qatar.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe stability of hematological status indices is a key determinant of optimal sport performance. The capacity to monitor hematological behaviors of elite soccer players may better explain the stresses placed upon physiological systems and the potential decrements in performance and physical capacity. The primary aim of this investigation was to examine the post-seasonal hematological status of professional top-level soccer players in response to seasonal match-play and training demands, in terms of the training practices, intensity, and loadings that they experience before, during, and after each season.

methodsSeventeen male elite European soccer players participated in the study (mean±SD: age 26.8±4.6 years, weight 78.1±5.7 kg, height 182.4±4.8 cm, body fat 9.8%±2.9%, and maximal aerobic capacity 56.5±4.2 mL kg

resultsNear-perfect correlations between white blood cells, neutrophils, the period of season, training availability, and total competitive minutes were found. When adjusting for all the confounding variables, a stability of the hematological profile was noticed. Only mean cell volume and mean cell hemoglobin values were associated with the requirement for elite European soccer teams to fulfill excessive competitive loadings. The reported lower mean cell volume and mean cell hemoglobin values may highlight the accumulative effects of seasonal training and match-play demands.

conclusionRegular blood testing could identify the need for both squad rotation and the implementation of interventions to assist in stabilizing transient hematological behaviors in order to optimize performance and sports output.

Indexed as

biochemistryhematologymatch-play demandssoccertraining availability

Identifiers

PMID30127648
PMCPMC6091247

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.