Evidence map›Paper›PMID 30936835›Full record

ArticleFrontiers in physiology2019

In Athletes, the Diurnal Variations in Maximum Oxygen Uptake Are More Than Twice as Large as the Day-to-Day Variations.

Raphael Knaier, Denis Infanger, Max Niemeyer, Christian Cajochen, Arno Schmidt-Trucksäss

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Frontiers in physiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 3 pooled it
8.2field-weighted citation impact, top 3% 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.

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

34 citing papers in PubMed, 3 syntheses or guidelines pooled it, 58 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

5 authors at 2 institutions in 2 countries.

Raphael KnaierDepartment of Sport, Exercise and Health, Faculty of Medicine, University of Basel, Basel, Switzerland.
Denis InfangerDepartment of Sport, Exercise and Health, Faculty of Medicine, University of Basel, Basel, Switzerland.
Max NiemeyerDepartment Medicine, Training and Health, Philipps-University Marburg, Marburg, Germany.
Christian CajochenCentre for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland.
Arno Schmidt-TrucksässDepartment of Sport, Exercise and Health, Faculty of Medicine, University of Basel, Basel, Switzerland.
University of Basel · CHPhilipps University of Marburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In competitive sports any substantial individual differences in diurnal variations in maximal performance are highly relevant. Previous studies have exclusively focused on how the time of day affects performance and disregarded the maximal individual diurnal variation of performance. Thus, the aims of this study were (1) to investigate the maximum diurnal variation in maximum oxygen uptake (VO

Indexed as

chronotypecircadianhabitualperformancetime of day

Identifiers

PMID30936835
PMCPMC6431663
OpenAlexW2921557055

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.