國家衛生研究院 NHRI:Item 3990099045/8140

NHRI > National Institute of Environmental Health Sciences > Saou-Hsing Liou > Periodical Articles > Item 3990099045/8140

Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/8140

Title:	The dose-response relationship between cumulative lifting load and Lumbar Disk Degeneration based on magnetic resonance imaging findings
Authors:	Hung, YJ;Shih, TT;Chen, BB;Hwang, YH;Ma, LP;Huang, WC;Liou, SH;Ho, IK;Guo, YL
Contributors:	Division of Environmental Health and Occupational Medicine;Center for Neuropsychiatric Research
Abstract:	BACKGROUND:Lumbar disk degeneration (LDD) has been related to heavy physical loading. However, the quantification of the exposure has been controversial, and the dose-response relationship with the LDD has not been established. OBJECTIVE:The purpose of this study was to investigate the dose-response relationship between lifetime cumulative lifting load and LDD. DESIGN:This was a cross-sectional study. METHODS:Every participant received assessments with a questionnaire, magnetic resonance imaging (MRI) of the lumbar spine, and estimation of lumbar disk compression load. The MRI assessments included assessment of disk dehydration, annulus tear, disk height narrowing, bulging, protrusion, extrusion, sequestration, degenerative and spondylolytic spondylolisthesis, foramina narrowing, and nerve root compression on each lumbar disk level. The compression load was predicted using a biomechanical software system. RESULTS:A total of 553 participants were recruited in this study and categorized into tertiles by cumulative lifting load (ie, <4.0 × 10(5), 4.0 × 10(5) to 8.9 × 10(6), and ≥8.9 × 10(6) Nh). The risk of LDD increased with cumulative lifting load. The best dose-response relationships were found at the L5-S1 disk level, in which high cumulative lifting load was associated with elevated odds ratios of 2.5 (95% confidence interval [95% CI]=1.5, 4.1) for dehydration and 4.1 (95% CI=1.9, 10.1) for disk height narrowing compared with low lifting load. Participants exposed to intermediate lifting load had an increased odds ratio of 2.1 (95% CI=1.3, 3.3) for bulging compared with low lifting load. The tests for trend were significant.
Date:	2014-11
Relation:	Physical Therapy. 2014 Nov;94(11):1582-1593.
Link to:	http://dx.doi.org/10.2522/ptj.20130095
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0031-9023&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000343794800004
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84908424243
Appears in Collections:	[Saou-Hsing Liou] Periodical Articles [Ing-Kang Ho(2006-2011)] Periodical Articles

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