Evidence map›Paper›PMID 30972340›Full record

ArticleFrontiers in nutrition2019

Effect of GABA-Fortified Oolong Tea on Reducing Stress in a University Student Cohort.

Tina Hinton, Herbert F Jelinek, Vincent Viengkhou, Graham A Johnston, Slade Matthews

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

Article in Frontiers in nutrition, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
4.9field-weighted citation impact, top 6% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 65 citations in OpenAlex.

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  20. Aromas Influencing the GABAergic System.Molecules (Basel, Switzerland) · 2022
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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 1 country.

Tina HintonPharmacology, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia.
Herbert F JelinekClinical Medicine, Macquarie University, Sydney, NSW, Australia.
Vincent ViengkhouPharmacology, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia.
Graham A JohnstonPharmacology, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia.
Slade MatthewsPharmacology, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia.
University of Sydney · AUCharles Sturt University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

GABA-containing tea has gained popularity as an accessible intervention to reduce the impact of chronic stress-induced autonomic imbalance and increased risk for cardiovascular disease despite a lack of evidence concerning the γ-aminobutyric acid (GABA) content in a cup of the tea and its effects on physiological and psychological stress as measures of cognitive function. We aimed to measure the effects of GABA-fortified tea consumption on heart rate variability (HRV) and stress in 30 participants using a pre-post cohort study design. Ten minute lead II ECG recordings were analyzed with Kubios software. Frequency domain parameters including total power, high and low frequency power, along with heart rate, were determined. A control group that consumed a non-fortified tea was included in the research. Statistical analysis was by two-way ANOVA for two-group comparison with time as an interaction and a significance level of

Indexed as

autonomic nervous systemGABAheart rate variabilityoolong teastress

Identifiers

PMID30972340
PMCPMC6443991
OpenAlexW2924871619

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.