Evidence map›Paper›PMID 29147670›Full record

ArticleOrthopaedic journal of sports medicine2017

Isokinetic Extension Strength Is Associated With Single-Leg Vertical Jump Height.

Felix Fischer, Cornelia Blank, Tobias Dünnwald, Peter Gföller, Elmar Herbst, Christian Hoser, Christian Fink

Abstract read
In one paragraph

Article in Orthopaedic journal of sports medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

19 citing papers in PubMed.

  1. Trial
  2. Asymmetry in Recreational Athletes One Year After Anterior Cruciate Ligament Reconstruction: Comparison of Isokinetic Strength and Hop Test Performance.Physiotherapy research international : the journal for researchers and clinicians in physical therapy · 2026
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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

7 authors.

Felix FischerResearch Unit of Orthopaedic Sports Medicine and Injury Prevention/Institute for Sports Medicine, Alpine Medicine and Health Tourism/Private University of Health Sciences, Medical Informatics and Technology, Hall in Tirol, Austria.
Cornelia BlankInstitute for Sports Medicine, Alpine Medicine and Health Tourism/Private University of Health Sciences, Medical Informatics and Technology, Hall in Tirol, Austria.
Tobias DünnwaldInstitute for Sports Medicine, Alpine Medicine and Health Tourism/Private University of Health Sciences, Medical Informatics and Technology, Hall in Tirol, Austria.
Peter GföllerGelenkpunkt-Sports and Joint Surgery, Innsbruck, Austria.
Elmar HerbstDepartment of Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.
Christian HoserGelenkpunkt-Sports and Joint Surgery, Innsbruck, Austria.
Christian FinkResearch Unit of Orthopaedic Sports Medicine and Injury Prevention/Institute for Sports Medicine, Alpine Medicine and Health Tourism/Private University of Health Sciences, Medical Informatics and Technology, Hall in Tirol, Austria.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIsokinetic strength testing is an important tool in the evaluation of the physical capacities of athletes as well as for decision making regarding return to sports after anterior cruciate ligament (ACL) reconstruction in both athletes and the lay population. However, isokinetic testing is time consuming and requires special testing equipment. HYPOTHESIS: A single-jump test, regardless of leg dominance, may provide information regarding knee extension strength through the use of correlation analysis of jump height and peak torque of isokinetic muscle strength. STUDY

designCross-sectional study; Level of evidence, 3.

methodsA total of 169 patients who underwent ACL reconstruction were included in this study. Isokinetic testing was performed on the injured and noninjured legs. Additionally, a single-leg countermovement jump was performed to assess jump height using a jump accelerometer sensor. Extension strength values were used to assess the association between isokinetic muscle strength and jump height.

resultsThe sample consisted of 60 female (mean age, 20.8 ± 8.3 years; mean weight, 61.7 ± 6.5 kg; mean height, 167.7 ± 5.3 cm) and 109 male (mean age, 23.2 ± 7.7 years; mean weight, 74.6 ± 10.2 kg; mean height, 179.9 ± 6.9 cm) patients. Bivariate correlation analysis showed an association (

conclusionInitial analysis showed a strong association between isokinetic strength and jump height. The study population encompassed various backgrounds, skill levels, and activity profiles, which might have affected the outcome. Even after controlling for age and sex, isokinetic strength was still moderately associated with jump height. Therefore, the jump technique and type of sport should be considered in future research.

Indexed as

ACL reconstructionisokinetic testingmuscle strengthreturn to playtest battery

Identifiers

PMID29147670
PMCPMC5672995

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.