Evidence map›Paper›PMID 28280975›Full record

Trial reportEuropean journal of applied physiology2017

The effect of Nordic hamstring strength training on muscle architecture, stiffness, and strength.

Kayla D Seymore, Zachary J Domire, Paul DeVita, Patrick M Rider, Anthony S Kulas

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of applied physiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 6 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.

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

48 citing papers in PubMed, 6 syntheses or guidelines pooled it.

  1. Pooled it
  2. Biceps Femoris Activation during Hamstring Strength Exercises: A Systematic Review.International journal of environmental research and public health · 2021
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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

5 authors.

Kayla D SeymoreKinesiology Department, East Carolina University, Greenville, NC, USA. kaylaseymore@boisestate.edu.
Zachary J DomireKinesiology Department, East Carolina University, Greenville, NC, USA.
Paul DeVitaKinesiology Department, East Carolina University, Greenville, NC, USA.
Patrick M RiderKinesiology Department, East Carolina University, Greenville, NC, USA.
Anthony S KulasDepartment of Health Education and Promotion, East Carolina University, Greenville, NC, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeHamstring strain injury is a frequent and serious injury in competitive and recreational sports. While Nordic hamstring (NH) eccentric strength training is an effective hamstring injury-prevention method, the protective mechanism of this exercise is not understood. Strength training increases muscle strength, but also alters muscle architecture and stiffness; all three factors may be associated with reducing muscle injuries. The purpose of this study was to examine the effects of NH eccentric strength training on hamstring muscle architecture, stiffness, and strength.

methodsTwenty healthy participants were randomly assigned to an eccentric training group or control group. Control participants performed static stretching, while experimental participants performed static stretching and NH training for 6 weeks. Pre- and post-intervention measurements included: hamstring muscle architecture and stiffness using ultrasound imaging and elastography, and maximal hamstring strength measured on a dynamometer.

resultsThe experimental group, but not the control group, increased volume (131.5 vs. 145.2 cm

conclusionsThe NH intervention was an effective training method for muscle hypertrophy, but, contrary to common literature findings for other modes of eccentric training, did not increase fascicle length. The data suggest that the mechanism behind NH eccentric strength training mitigating hamstring injury risk could be increasing volume rather than increasing muscle length. Future research is, therefore, warranted to determine if muscle hypertrophy induced by NH training lowers future hamstring strain injury risk.

Indexed as

ExerciseMuscle StrengthAdolescentElasticity Imaging TechniquesFemaleHamstring MusclesHumansMaleYoung AdultBiomechanicsDynamometryEccentricInjury preventionInterventionUltrasound

Identifiers

PMID28280975

What OpenQuestion holds

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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.