Estimating 3-D L5/S1 moments during manual lifting using a video coding system: validity and interrater reliability.
Objective: The aim of the study was to investigate the validity and interrater reliability of using a proposed video coding system to estimate the dynamical 3-D L5/ S1 joint moment on the basis of four key frames from video clips of asymmetric lifting tasks.Background: L5/S1 joint loading has been w...
| Publicado en: | Human Factors Vol. 54; no. 6; pp. 1053 - 1066 |
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| Autores principales: | , , , , |
| Formato: | research randomized controlled trial Journal Article |
| Publicado: |
Sage Publications Inc.
Dec2012
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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=104240074&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104240074 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00187208 HMF jtl: Human Factors issn: 00187208 maglogo: Y pubinfo: dt: Dec2012 vid: 54 iid: 6 pid: 344 pub: Sage Publications Inc. place: Thousand Oaks, California artinfo: ui: 104240074 104240074 NLM23397813 2012014011 NLM23397813 104240074 ppf: 1053 ppct: 13 formats: tig: atl: Estimating 3-D L5/S1 moments during manual lifting using a video coding system: validity and interrater reliability. aug: au: Xu, Xu Chang, Chien-Chi Faber, Gert S Kingma, Idsart Dennerlein, Jack T affil: Liberty Mutual Research Institute for Safety, 71 Frankland Rd., Hopkinton, MA 01748, USA. Xu.Xu@libertymutual.com sug: subj: Lifting Lumbar Vertebrae Physiology Sacrum Physiology Adult Human Male Middle Age Randomized Controlled Trials Reproducibility of Results Videorecording Adult: 19-44 years Middle Aged: 45-64 years Male ab: Objective: The aim of the study was to investigate the validity and interrater reliability of using a proposed video coding system to estimate the dynamical 3-D L5/ S1 joint moment on the basis of four key frames from video clips of asymmetric lifting tasks.Background: L5/S1 joint loading has been widely adopted to quantify low-back loading during lifting tasks. However, the measurement of L5/S1 joint loading usually requires a laboratory environment, which cannot be applied during field surveys.Method: The validity of this system was investigated by comparing the estimated L5/S1 joint moments of various simulated lifting tasks with motion tracking system-based reference L5/S1 joint moments.Results: The comparison showed that the video coding system yielded good estimates on peak moment (r = .91, average absolute error [AAE] = 20.3 Nm) and cumulative moment (r = .88,AAE = 22.5 Nm.sec) of the sagittal plane. The interrater reliability of this system was assessed among 10 raters who used this system. The intraclass correlation ranged between .51 and .89 for the moments of different planes.Conclusion: The results of the validity and interrater reliability analyses showed that the proposed video coding system could provide a good estimate of total L5/S1 joint loading on the basis of side-view video clips of the simulated lifting tasks.Application: Although it was not as accurate as a motion tracking system for L5/S1 joint loading calculations, this approach can be an alternative for back load estimation for some lifting configurations when the use of motion tracking systems is not possible. pubtype: Academic Journal doctype: research randomized controlled trial Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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