Effect of New Zealand Blackcurrant Supplementation on Sports Performance: A Systematic Review.

Samira Gholamian, Sina Ebrahimi, Arezoo Razmdideh, Mohammad Shariatzadeh, Ehsan Rezaee Moeini

Abstract readReview

In one paragraph

Review in Current developments in nutrition, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing 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

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

5 authors.

Samira GholamianSport Sciences Research Institute, Tehran, Iran.

Sina EbrahimiDepartment of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Islamic Azad University, Sanandaj Branch, Sanandaj, Iran.

Arezoo RazmdidehDepartment of Physical Education and Sport Sciences, Faculty of Literature, Humanities and Social Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran.

Mohammad ShariatzadehSport Sciences Research Institute, Tehran, Iran.

Ehsan Rezaee MoeiniDepartment of Exercise Physiology, Sport Sciences Research Institute, Tehran, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: New Zealand blackcurrant (NZBC) is a rich source of anthocyanins, but findings on its effects on sports performance and metabolic health are inconsistent. Objectives: This systematic review aimed to evaluate the effects of NZBC supplementation on sport performance and metabolic outcomes in adults. Methods: A comprehensive literature search was conducted to identify randomized crossover clinical trials assessing NZBC supplementation. Standardized effect sizes (Cohen's Results: Twenty-one randomized crossover clinical trials were included. Overall, NZBC supplementation had a small-to-moderate effect on sport performance (mean Conclusions: NZBC supplementation may provide modest benefits for sports performance and metabolic outcomes. However, variability across doses, exercise modalities, and study designs highlights the need for larger, well-controlled trials to clarify its efficacy.

Indexed as

anthocyaninathletic performanceexercise trainingfat oxidationpolyphenols

Identifiers

PMID42371496

DOI10.1016/j.cdnut.2026.109388

PMCPMC13310619

What Socratic 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 Socratic graph.