Evidence map›Paper›PMID 41451262›Full record

ArticleCurrent developments in nutrition2025

The Effects of Acute Caffeine Supplementation in Combination with Postactivation Performance Enhancement on Performance and Fatigue in High-Level Male Volleyball Athletes.

Marjan Shidai, Hamid Rajabi, Neda Khaledi, Aref Basereh, Somayeh Ahmadabadi

Abstract read
In one paragraph

Article in Current developments in nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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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

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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.

Marjan ShidaiDepartment of Exercise Physiology, Kharazmi University, Tehran, Iran.
Hamid RajabiDepartment of Exercise Physiology, Kharazmi University, Tehran, Iran.
Neda KhalediDepartment of Exercise Physiology, Kharazmi University, Tehran, Iran.
Aref BaserehDepartment of Exercise Physiology, Kharazmi University, Tehran, Iran.
Somayeh AhmadabadiDepartment of Physical Education and Sports Sciences, Farhangian University, Tehran, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: While both post-activation performance enhancement (PAPE) and caffeine (CAF) independently enhance performance, their combined effects on physical performance and the levels of central and peripheral fatigue remain unexplored. Objectives: This study assessed the impact of the PAPE method and CAF supplementation on central and peripheral fatigue following a fatigue-inducing protocol in elite male volleyball athletes. Methods: The study employed a convenience sampling method to recruit 40 voluntary participants (18-30 y), who were then divided into 4 groups: PAPE group ( Results: Between-group comparisons revealed that the PAPE + CAF group demonstrated a significant improvement in the performance variables, including time to exhaustion, number of rounds, and serum dopamine concentrations, compared with all other groups ( Conclusions: This study confirms CAF's primary role in enhancing performance and reducing fatigue. The combined CAF + PAPE intervention provided a distinct advantage only for the number of rounds completed, but showed no significant benefit over CAF alone for time to exhaustion or most biochemical markers.

Indexed as

caffeinecentral fatiguefatiguevolleyballvoluntary conditioning activity

Identifiers

PMID41451262
PMCPMC12731828

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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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.