Evidence map›Paper›PMID 41359274›Full record

Trial reportEuropean journal of applied physiology2026

Small muscle mass exercise enhances muscular adaptations? Effects of unilateral and bilateral biceps curl on maximum strength and muscle size changes.

Witalo Kassiano, Ian Tricoli, Felipe Gomes, Vanessa Santos-Melo, Ingrid Manske, Gabriel Kunevaliki, Felipe Lisboa, Alexandre Miguel, Aline Prado, Natã Stavinski and 1 more

Erratum issuedAbstract readComparative StudyRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of applied physiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. 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

5 · Who and what money

Authors and funding

11 authors.

Witalo KassianoMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Paraná, Brazil. acc.witalo@gmail.com.ORCID http://orcid.org/0000-0002-0868-8634
Ian TricoliMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Paraná, Brazil.
Felipe GomesMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Paraná, Brazil.
Vanessa Santos-MeloMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Paraná, Brazil.
Ingrid ManskeMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Paraná, Brazil.
Gabriel KunevalikiMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Paraná, Brazil.
Felipe LisboaMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Paraná, Brazil.
Alexandre MiguelMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Paraná, Brazil.
Aline PradoMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Paraná, Brazil.
Natã StavinskiMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Paraná, Brazil.
Edilson S CyrinoMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Paraná, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe compared the effects of bilateral and unilateral biceps curl training on strength and muscle size changes.

methodsUntrained young women were randomly allocated to perform bilateral (B-BC, n = 28) or unilateral (U-BC, n = 26) biceps curl training. Participants performed 2 sets of 8-12 repetitions maximum (RM) per session, 3 d·wk

resultsThere was no between-group differences on muscle size changes for EF60 [∆ -0.01 (-0.08, 0.05) cm], EF70 [∆ 0.03 (-0.04, 0.11) cm], and Whole-EF [∆ 0.02 (-0.10, 0.15) cm]. The 1RM BIL changes were not different between groups [∆ -0.28 (-1.23, 0.66) kg]. U-BC exhibited greater changes in 1RM UNI right arm [∆ 0.75 (0.22, 1.27) kg], but no between-group difference was observed in 1RM UNI left arm [∆ 0.43 (-0.24, 0.93) kg].

conclusionOur findings suggest that exercise selectionࣧ-whether bilateral or unilateralࣧ-influences maximum strength changes. On muscle size, we observed no evidence of differential muscle growth. Whether exercises that involve greater absolute difference in muscle recruited affect the magnitude of muscle size changes remains an open question and warrants further investigation.

Indexed as

Adaptation, PhysiologicalMuscle, SkeletalMuscle StrengthResistance TrainingAdultFemaleHumansYoung AdultBiceps brachiiExercise selectionMuscle thicknessResistance training

Identifiers

PMID41359274

What OpenQuestion holds

Textmetadata
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.