Evidence map›Paper›PMID 28667097›Full record

ArticlePhysiological reports2017

Shortening-induced force depression is modulated in a time- and speed-dependent manner following a stretch-shortening cycle.

Rafael Fortuna, Martin Groeber, Wolfgang Seiberl, Geoffrey A Power, Walter Herzog

Abstract read
In one paragraph

Article in Physiological reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

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

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 synthesis or guideline pooled it.

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  16. The sag response in human muscle contraction.European journal of applied physiology · 2018
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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.

Rafael FortunaHuman Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada fortuna.rafael@gmail.com.
Martin GroeberDepartment of Biomechanics in Sports, Faculty of Sport and Health Sciences, Technische Universität München, Munich, Germany.
Wolfgang SeiberlDepartment of Biomechanics in Sports, Faculty of Sport and Health Sciences, Technische Universität München, Munich, Germany.
Geoffrey A PowerNeuromechanical Performance Research Lab, Department of Human Health and Nutritional Sciences, College of Biological Sciences University of Guelph, Guelph Ontario, Canada.
Walter HerzogHuman Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The steady-state isometric force following active muscle shortening or lengthening is smaller (force depression, FD) or greater (residual force enhancement, RFE) than a purely isometric contraction at the corresponding length. The mechanism underlying these phenomena is not explained within the context of the cross-bridge theory, with few studies investigating the effects of FD and RFE in stretching-shortening cycle (SSC). The purpose of this study was to perform SSC, where the time between the end of stretch and the end of shortening was manipulated by (1) adding a pause between stretch and shortening (protocol 1) or (2) performing the shortening contraction at different speeds (protocol 2). The results show that, in protocol 1, FD was reduced for SSC with a 0-sec and 0.5-sec interval between stretching and shortening, but was the same for SSC with a 1-sec interval compared to the pure FD condition. In protocol 2, FD was reduced for SSC with shortening speeds of 30 and 60°/sec, but was the same for shortening speeds of 15 and 20°/sec compared to the pure FD condition. These findings provide evidence that stretch preceding shortening affects FD in a time- and speed

Indexed as

Isometric ContractionAdultFemaleHumansMaleMuscle, SkeletalMuscle StrengthMuscle Stretching ExercisesRandom AllocationConcentriccross‐bridge theoryeccentricelectrical stimulationforce depressionmechanisms of contractionresidual force enhancement

Identifiers

PMID28667097
PMCPMC5492198

What OpenQuestion holds

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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.