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dc.contributor.author
Knols, Ruud H.
dc.contributor.author
Aufdemkampe, Geert
dc.contributor.author
de Bruin, Eling D.
dc.contributor.author
Uebelhart, Daniel
dc.contributor.author
Aaronson, Neil K.
dc.date.accessioned
2019-04-26T16:27:07Z
dc.date.available
2017-06-14T11:10:29Z
dc.date.available
2019-04-26T16:27:07Z
dc.date.issued
2009
dc.identifier.issn
1471-2474
dc.identifier.other
10.1186/1471-2474-10-31
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/156815
dc.identifier.doi
10.3929/ethz-b-000156815
dc.description.abstract
Background Hand-held dynamometry is a portable and inexpensive method to quantify muscle strength. To determine if muscle strength has changed, an examiner must know what part of the difference between a patient's pre-treatment and post-treatment measurements is attributable to real change, and what part is due to measurement error. This study aimed to determine the relative and absolute reliability of intra and inter-observer strength measurements with a hand-held dynamometer (HHD). Methods Two observers performed maximum voluntary peak torque measurements (MVPT) for isometric knee extension in 24 patients with haematological malignancies. For each patient, the measurements were carried out on the same day. The main outcome measures were the intraclass correlation coefficient (ICC ± 95%CI), the standard error of measurement (SEM), the smallest detectable difference (SDD), the relative values as % of the grand mean of the SEM and SDD, and the limits of agreement for the intra- and inter-observer '3 repetition average' and the 'highest value of 3 MVPT' knee extension strength measures. Results The intra-observer ICCs were 0.94 for the average of 3 MVPT (95%CI: 0.86–0.97) and 0.86 for the highest value of 3 MVPT (95%CI: 0.71–0.94). The ICCs for the inter-observer measurements were 0.89 for the average of 3 MVPT (95%CI: 0.75–0.95) and 0.77 for the highest value of 3 MVPT (95%CI: 0.54–0.90). The SEMs for the intra-observer measurements were 6.22 Nm (3.98% of the grand mean (GM) and 9.83 Nm (5.88% of GM). For the inter-observer measurements, the SEMs were 9.65 Nm (6.65% of GM) and 11.41 Nm (6.73% of GM). The SDDs for the generated parameters varied from 17.23 Nm (11.04% of GM) to 27.26 Nm (17.09% of GM) for intra-observer measurements, and 26.76 Nm (16.77% of GM) to 31.62 Nm (18.66% of GM) for inter-observer measurements, with similar results for the limits of agreement. Conclusion The results indicate that there is acceptable relative reliability for evaluating knee strength with a HHD, while the measurement error observed was modest. The HHD may be useful in detecting changes in knee extension strength at the individual patient level.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
BioMed Central
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/2.0/
dc.subject
Muscle Strength
en_US
dc.subject
Knee Extension
en_US
dc.subject
Relative Reliability
en_US
dc.subject
Knee Extension Strength
en_US
dc.subject
Small Detectable Difference
en_US
dc.title
Hand-held dynamometry in patients with haematological malignancies: Measurement error in the clinical assessment of knee extension strength
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 2.0 Generic
dc.date.published
2009-03-09
ethz.journal.title
BMC Musculoskeletal Disorders
ethz.journal.volume
10
en_US
ethz.journal.abbreviated
BMC Musculoskelet Disord
ethz.pages.start
31
en_US
ethz.size
11 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::02535 - Institut für Bewegungswiss. und Sport / Institut of Human Movement Sc. and Sport::09560 - De Bock, Katrien / De Bock, Katrien::08758 - Trainingslehre / E. de Bruin
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::02535 - Institut für Bewegungswiss. und Sport / Institut of Human Movement Sc. and Sport::09560 - De Bock, Katrien / De Bock, Katrien::08758 - Trainingslehre / E. de Bruin
ethz.date.deposited
2017-06-14T11:10:33Z
ethz.source
ECIT
ethz.identifier.importid
imp59364cdb6c84198175
ethz.ecitpid
pub:35056
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-15T08:41:59Z
ethz.rosetta.lastUpdated
2020-02-15T18:38:45Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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