Reliability and validity of a novel instrument for the quantification of hand forces during a jar opening task.
• The intrarater reliability and ecological validity of a novel and true-to-form jar instrument was tested in women with hand osteoarthritis • Intrarater reliability of the jar instrument was good to excellent and participants reported the experience of using it to be highly representative of jar-op...
| Publicado en: | Journal of Hand Therapy Vol. 35; no. 3; pp. 488 - 501 |
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| Autores principales: | , |
| Formato: | research Journal Article |
| Publicado: |
Elsevier B.V.
Jul2022
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=161121886&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 161121886 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08941130 4C0 jtl: Journal of Hand Therapy issn: 08941130 maglogo: N pubinfo: dt: Jul2022 vid: 35 iid: 3 pid: 82545 pub: Elsevier B.V. place: Philadelphia, Pennsylvania artinfo: ui: 161121886 161121886 161121886 10.1016/j.jht.2021.04.012 161121886 ppf: 488 ppct: 13 formats: tig: atl: Reliability and validity of a novel instrument for the quantification of hand forces during a jar opening task. aug: au: McGee, Corey Mathiowetz, Virgil affil: University of Minnesota, Program in Occupational Therapy, Minneapolis, MN, USA sug: subj: Reliability and Validity Instrument Validation Task Performance and Analysis Hand Physiology Grip Strength Evaluation Women's Health Osteoarthritis, Hand Hand Joints Human Torque Validation Studies Intrarater Reliability Adult Female Descriptive Statistics Intraclass Correlation Coefficient Goal-Setting Kinetics Adult: 19-44 years Female ab: • The intrarater reliability and ecological validity of a novel and true-to-form jar instrument was tested in women with hand osteoarthritis • Intrarater reliability of the jar instrument was good to excellent and participants reported the experience of using it to be highly representative of jar-opening at home. • The jar tool may be used in future study of the required hand kinetics for successful opening of a sealed jar and for testing of joint protection strategies in this population. Clinical Measurement Jar opening is a task that relies heavily on the ability to generate adequate hand forces and is often reported in the literature as being difficult for women with hand arthritis. Many have studied relationships between diminished grip/pinch strength and occupational performance but few have investigated how much hand force is necessary to successfully engage in manual tasks. Those who studied this have relied on approaches and tools which lack ecology. Additionally, few have instrumented daily objects to understand if joint protection techniques do, in fact, reduce the hand force generation when performing manual tasks. The objectives of this study were to one) determine the within session repeatability of a device used to quantify these forces and two) probe into the ecological validity of a novel device to be used in the future study of women with hand osteoarthritis to measure hand force requirements and study the impact of joint protection interventions on hand force profiles. A plastic jar was instrumented with a torque limiter, 6-axis load cell, and six force sensing resistors so as to capture the grip and compressive hand forces which act on a jar lid when opening a sealed jar. To assess intra-rater reliability of the tool and its testing procedures, 31 adult women with hand osteoarthritis were asked untwist the jar's lid so as to break its seal with each hand twice while stabilizing the base with the opposing hand. The agreement between trials of peak forces and torques from each hand was assessed through statistical approaches including Intraclass Correlation Coefficient, Standard Error of the Measurement, and Minimal Detectable Change. The jar's ecological validity was then assessed via survey. This instrument and methods yielded good to excellent repeatability across all force outputs. The majority of our subjects (87%) reported the jar to be similar to those used at home, 87% reported to use a similar jar 2-3 times/month or greater, and rated the importance of opening such a jar as being, on average, 8.7/10. The jar instrument appears to have high reliability and ecologic validity. It has the potential to reveal hand force requirements for a population known to have difficulties opening jars and understanding these force thresholds could help to inform therapy goal-setting. Beyond this, it has the potential to support the study of the hand forces used across various joint protection approaches so as to inform best "jar-opening" practices. This tool was designed to represent the qualities of a standard, large sealed jar while still housing sophisticated kinetic measurement capacities. Our findings support that we have presented a tool which can be used in future study within this population to better understand the hand kinetics associated with the highly problematic task of jar-opening and joint protection strategies intended to reduce hand loads. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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