Evidence map›Paper›PMID 25803783›Full record

Trial reportPloS one2015

Branched-chain amino acids and arginine improve performance in two consecutive days of simulated handball games in male and female athletes: a randomized trial.

Chen-Kang Chang, Kun-Ming Chang Chien, Jung-Hsien Chang, Mei-Hsuan Huang, Ya-Chuan Liang, Tsung-Han Liu

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 8% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 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

6 authors at 2 institutions in 1 country.

Chen-Kang ChangSport Science Research Center, National Taiwan University of Sport, Taichung, Taiwan.
Kun-Ming Chang ChienDepartment of Ball Sport, National Taiwan University of Sport, Taichung, Taiwan.
Jung-Hsien ChangOffice of Physical Education, National Taiwan University of Sport, Taichung, Taiwan.
Mei-Hsuan HuangInstitute of Sport Performance, National Taiwan University of Sport, Taichung, Taiwan.
Ya-Chuan LiangInstitute of Sport Performance, National Taiwan University of Sport, Taichung, Taiwan.
Tsung-Han LiuGraduate Institute of Sports Training, University of Taipei, Taipei, Taiwan.
National Taiwan University of Sport · TWUniversity of Taipei · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

unlabelledThe central nervous system plays a crucial role in the development of physical fatigue. The purpose of this study is to investigate the effect of combined supplementation of branched-chain amino acids (BCAA) and arginine on intermittent sprint performance in simulated handball games on 2 consecutive days.

methodsFifteen male and seven female handball players consumed 0.17 g/kg BCAA and 0.04 g/kg arginine together (AA trial), or placebo (PB trial) before exercise. Each trial contained two 60-min simulated handball games on consecutive days. The game was consisted of 30 identical 2-min blocks and a 20 m all-out sprint was performed at the end of each block. The performance, measured by percentage changes of sprint time between day 1 and 2, was significantly better in the AA trial (first half: AA trial: -1.34 ± 0.60%, PB trial: -0.21 ± 0.69%; second half: AA trial: -1.68 ± 0.58%, PB trial: 0.49 ± 0.42%). The average ratings of perceive exertion throughout the 2-day trial was significantly lower in the AA trial (14.2 ± 0.3) than the PB trial (15.1 ± 0.4). Concurrently, post-exercise tryptophan/BCAA ratio on both days in the AA trial was significantly lower than the baseline. This study showed that BCAA and arginine supplementation could improve performance in intermittent sprints on the second consecutive day of simulated handball games in well-trained athletes by potentially alleviating central fatigue.

Indexed as

AthletesAmino Acids, Branched-ChainAnalysis of VarianceArginineAthletic PerformanceDietary SupplementsExercise TestFemaleHumansMaleMuscle FatigueRunningTaiwanAmino Acids, Branched-ChainArginine

Identifiers

PMID25803783
PMCPMC4372381
OpenAlexW2013541556

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.