Evidence map›Paper›PMID 36107233›Full record

ArticleEuropean journal of applied physiology2022

Comparison between concentric-only, eccentric-only, and concentric-eccentric resistance training of the elbow flexors for their effects on muscle strength and hypertrophy.

Shigeru Sato, Riku Yoshida, Fu Murakoshi, Yuto Sasaki, Kaoru Yahata, Kazuki Kasahara, João Pedro Nunes, Kazunori Nosaka, Masatoshi Nakamura

Registry-linked trialAbstract read
PubMed Publisher
In one paragraph

Article in European journal of applied physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07395583 (Efficacy of Eccentric Over Concentric Hamstring Exercises in Elite Male Footballers for Preventing Non-Contact Hamstring Injuries), which is not on this map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
–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.

NCT07395583 naactive not recruitingnot on this mapstarted 2026, after this paper: background citation

Efficacy of Eccentric Over Concentric Hamstring Exercises in Elite Male Footballers for Preventing Non-Contact Hamstring Injuries: A Randomized Controlled Trial

TypeinterventionalSponsorEmirates Health Services (EHS)Ran2026 to 2027Enrolled275ConditionsLong-Term Eccentric, Concentric & Combined Hamstring Training Improves Strength, May Cut Injury Risk, and Enhances Performance in Elite Male Football PlayersArmsEccentric training + regular football practice, Concentric training + regular football practice
3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

9 authors.

Shigeru SatoInstitute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan.
Riku YoshidaInstitute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan.
Fu MurakoshiDepartment of Physical Therapy, Niigata University of Health and Welfare, Niigata, Japan.
Yuto SasakiDepartment of Physical Therapy, Niigata University of Health and Welfare, Niigata, Japan.
Kaoru YahataInstitute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan.
Kazuki KasaharaDepartment of Physical Therapy, Niigata University of Health and Welfare, Niigata, Japan.
João Pedro NunesMetabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil.
Kazunori NosakaCentre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia.
Masatoshi NakamuraFaculty of Rehabilitation Sciences, Nishi Kyushu University, 4490-9 Ozaki, Kanzaki, Saga, 842-8585, Japan. nakamuramas@nisikyu-u.ac.jp.ORCID http://orcid.org/0000-0002-8184-1121

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study compared concentric-eccentric coupled (CON-ECC), concentric-only (CON), and eccentric-only (ECC) resistance training of the elbow flexors for their effects on muscle strength and hypertrophy.

methodsNon-resistance-trained young adults were assigned to one of the four groups: CON-ECC (n = 14), CON (n = 14) and ECC (n = 14) training groups, and a control group (n = 11) that had measurements only. The training group participants performed dominant arm elbow flexor resistance training in extended elbow joint angles (0°-50°) twice a week for 5 weeks. The total training volume (dumbbell weight × number of contractions) in CON-ECC (5745 ± 1020 kg) was double of that in CON (2930 ± 859 kg) and ECC (3035 ± 844 kg), because 3 sets of 10 contractions were performed for both directions in CON-ECC. Maximum voluntary isometric (MVC-ISO), concentric (MVC-CON), and eccentric contraction (MVC-ECC) torque of the elbow flexors and biceps brachii and brachialis muscle thickness (MT) were measured at baseline, and 3-9 days post-last training session.

resultsNo significant changes in any measures were evident for the control group. The CON-ECC and ECC groups showed increases (P < 0.05) in MVC-ISO (12.0 ± 15.7% and 11.3 ± 10.8%, respectively) and MVC-ECC torque (12.5 ± 18.3%, 16.2 ± 11.0%) similarly. Increases in MVC-CON torque (P < 0.05) were evident for the CON-ECC (17.5 ± 13.5%), CON (10.5 ± 12.8%), and ECC (14.2 ± 10.4%) groups without a significant difference among groups. MT increased (P < 0.01) after CON-ECC (10.6 ± 5.4%) and ECC (9.7 ± 7.2%) similarly, but not significantly after CON (2.5 ± 4.8%).

conclusionsECC training increased muscle strength and thickness similarly to CON-ECC training, despite the half training volume, suggesting that concentric contractions contributed little to the training effects.

Indexed as

Resistance TrainingElbowHumansHypertrophyIsometric ContractionMuscle, SkeletalMuscle StrengthYoung AdultConcentric contractionEccentric contractionMaximum voluntary contraction torqueMuscle hypertrophyRange of motion

Identifiers

PMID36107233

What OpenQuestion holds

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Registered trials

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.