Blackcurrant Anthocyanin Supplementation Alters Exercise-Induced Substrate Utilization - A Systematic Review and Meta-Analysis

Abstract Blackcurrant anthocyanins have been investigated for their effects on exercise‑induced substrate utilisation. Previous research has examined the influence of supplementation dose, duration, and exercise modality, with mixed findings. This systematic review and meta-analysis examined the effect of blackcurrant supplementation on exercising substrate utilisation. Electronic searches were conducted in PubMed, Web of Science, and EBSCOhost between the 1st May and 14th November 2025 using a predefined search strategy. Controlled trials investigating the effects of blackcurrant supplementation on fat and carbohydrate oxidation during exercise in physically active adults (18–65 years) were included. All forms, doses, and supplementation durations were eligible, provided outcomes were reported as absolute rates of substrate utilisation during exercise. Two authors independently extracted data and assessed for risk of bias using the Cochrane RoB 2 tool, with a random-effects meta-analysis undertaken on the mean difference between control or placebo and consumption of blackcurrant extract on exercise substrate utilisation. Searches returned 263 articles, with 15 studies included with 226 participants after full-text screening. Meta-analysis demonstrated blackcurrant extract to increase fat oxidation (0.042 g·min-1, P < 0.001) and decrease carbohydrate oxidation (-0.099 g·min-1, P = 0.012). Blackcurrant can increase fat oxidation and decrease carbohydrate oxidation during exercise. However, this finding is not consistent for individuals and factors such as training status, sex, dosage, duration of intake may determine responses. The review was registered on the 28th April 2025 in PROSPERO (CRD420251030222).

• Publication year

  2026

• Venue

  Journal of Dietary Supplements

• Publication date

  2026-02-03

• Fields of study

  Medicine

• Identifiers
  DOI 10.1080/19390211.2026.2624114PMID 41631820
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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