Evidence map›Paper›PMID 32178650›Full record

ArticleBMC musculoskeletal disorders2020

The roles of lumbar load thresholds in cumulative lifting exposure to predict disk protrusion in an Asian population.

Isabella Y-J Hung, Tiffany T-F Shih, Bang-Bin Chen, Saou-Hsing Liou, Ing-Kang Ho, Yue Leon Guo

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC musculoskeletal disorders, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

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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

1 citing paper in PubMed.

  1. Article
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

6 authors.

Isabella Y-J HungDepartment of Nursing, Chung Hwa University of Medical Technology, Tainan, Taiwan.
Tiffany T-F ShihDepartment of Medical Imaging and Radiology, National Taiwan University Hospital and National Taiwan University (NTU), College of Medicine, Taipei, Taiwan.
Bang-Bin ChenDepartment of Medical Imaging and Radiology, National Taiwan University Hospital and National Taiwan University (NTU), College of Medicine, Taipei, Taiwan.
Saou-Hsing LiouNational Institute of Environmental Health Sciences, National Health Research Institute (NHRI), Miaoli, Taiwan.
Ing-Kang HoCenter for Drug Abuse and Addiction, China Medical University Hospital, Taichung, Taiwan.
Yue Leon GuoNational Institute of Environmental Health Sciences, National Health Research Institute (NHRI), Miaoli, Taiwan. leonguo@ntu.edu.tw.ORCID http://orcid.org/0000-0002-8530-4809

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe purpose of this study was to determine whether a specific threshold per lifting movement, the accumulation above which best predicts lumbar disk protrusion, exists or the total lifting load should be considered.

methodsThis was a retrospective study. Subjects with various lifting exposures were recruited. Disk protrusion was assessed by magnetic resonance imaging. The cumulative lifting load was defined as the sum of the time-weighed lumbar load for each job and was calculated using a biomechanical software system. The effectiveness of accumulation above different thresholds in predicting disk protrusion were compared using four statistical methods.

resultsA total of 252 men and 301 women were included in the final analysis. For the men, 3000 Newtons for each lifting task was the optimal threshold for predicting L4-S1 disk protrusion, whereas for the women, 2800 Newtons was optimal.

conclusionsOur findings suggested that for cumulative lifting exposure, including the total lifting load without defining a minimal exposure limit might not be the optimal method for predicting disk protrusion. The NIOSH 3400 Newton recommended limits do not appear to be the optimal thresholds for preventing disk protrusion. Different lifting thresholds might be needed for men and women in the workplace for their safety.

Indexed as

Asian PeopleLiftingAdultFemaleHumansIntervertebral DiscIntervertebral Disc DisplacementLumbar VertebraeMaleMiddle AgedPredictive Value of TestsRetrospective StudiesWeight-BearingCross-sectional studyCumulativeDisk protrusionLifting loadThreshold

Identifiers

PMID32178650
PMCPMC7077115

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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.