Evidence map›Paper›PMID 29684174›Full record

ArticleSchizophrenia bulletin2018

Grip Strength Is Associated With Cognitive Performance in Schizophrenia and the General Population: A UK Biobank Study of 476559 Participants.

Joseph Firth, Brendon Stubbs, Davy Vancampfort, Josh A Firth, Matthew Large, Simon Rosenbaum, Mats Hallgren, Philip B Ward, Jerome Sarris, Alison R Yung

Open access · hybridAbstract read
In one paragraph

Article in Schizophrenia bulletin, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 2 pooled it
8.5field-weighted citation impact, top 2% of its field
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

54 citing papers in PubMed, 2 syntheses or guidelines pooled it, 104 citations in OpenAlex.

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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

10 authors at 6 institutions in 4 countries.

Joseph FirthNICM Health Research Institute, School of Science and Health, University of Western Sydney, Sydney, Australia.
Brendon StubbsPhysiotherapy Department, South London and Maudsley NHS Foundation Trust, London, UK.
Davy VancampfortKU Leuven Department of Rehabilitation Sciences, Leuven, Belgium.
Josh A FirthDepartment of Zoology, Edward Grey Institute, University of Oxford, Oxford, UK.
Matthew LargeThe Prince of Wales Hospitals, Randwick, Australia.
Simon RosenbaumSchool of Psychiatry, University of New South Wales, Sydney, Australia.
Mats HallgrenDepartment of Public Health Sciences, Karolinksa Institute, Stockholm, Sweden.
Philip B WardSchool of Psychiatry, University of New South Wales, Sydney, Australia.
Jerome SarrisNICM Health Research Institute, School of Science and Health, University of Western Sydney, Sydney, Australia.
Alison R YungDivision of Psychology and Mental Health, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
University of Manchester · GBBlack Dog Institute · AUKing's College London · GBThe University of Melbourne · AUKarolinska Institutet · SEUniversity of Oxford · GB

Funding

Department of Health ICA-CL-2017-03-001Medical Research Council MC_PC_17228Medical Research Council MC_QA137853Medical Research Council P117413F07
6 · The paper itself

Abstract

Background: Handgrip strength may provide an easily-administered marker of cognitive functional status. However, further population-scale research examining relationships between grip strength and cognitive performance across multiple domains is needed. Additionally, relationships between grip strength and cognitive functioning in people with schizophrenia, who frequently experience cognitive deficits, has yet to be explored. Methods: Baseline data from the UK Biobank (2007-2010) was analyzed; including 475397 individuals from the general population, and 1162 individuals with schizophrenia. Linear mixed models and generalized linear mixed models were used to assess the relationship between grip strength and 5 cognitive domains (visual memory, reaction time, reasoning, prospective memory, and number memory), controlling for age, gender, bodyweight, education, and geographical region. Results: In the general population, maximal grip strength was positively and significantly related to visual memory (coefficient [coeff] = -0.1601, standard error [SE] = 0.003), reaction time (coeff = -0.0346, SE = 0.0004), reasoning (coeff = 0.2304, SE = 0.0079), number memory (coeff = 0.1616, SE = 0.0092), and prospective memory (coeff = 0.3486, SE = 0.0092: all P < .001). In the schizophrenia sample, grip strength was strongly related to visual memory (coeff = -0.155, SE = 0.042, P < .001) and reaction time (coeff = -0.049, SE = 0.009, P < .001), while prospective memory approached statistical significance (coeff = 0.233, SE = 0.132, P = .078), and no statistically significant association was found with number memory and reasoning (P > .1). Conclusions: Grip strength is significantly associated with cognitive functioning in the general population and individuals with schizophrenia, particularly for working memory and processing speed. Future research should establish directionality, examine if grip strength also predicts functional and physical health outcomes in schizophrenia, and determine whether interventions which improve muscular strength impact on cognitive and real-world functioning.

Indexed as

AdultAgedCognitive DysfunctionCross-Sectional StudiesDatabases, FactualFemaleHand StrengthHumansMaleMemory, Short-TermMiddle AgedPsychomotor PerformanceSchizophrenia

Identifiers

PMID29684174
PMCPMC6007683
OpenAlexW2801372494

What OpenQuestion holds

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LicenceCC BY
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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.