Lumbar load during one-handed bricklaying

Jäger, Matthias; Luttmann, Alwin; Laurig, Wolfgang

doi:10.1016/0169-8141(91)90037-m

Cited by 85 publications

(39 citation statements)

References 44 publications

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“…The reduced back flexion resulted in a decrease in compression force on L4/L5 from 1.9 kN (not raised) to 1.5 kN (raised bricks). Comparable data were reported by Jäger, Luttman, and Laurig (1991). Vink and Koningsveld (1990) also showed a reduction in experienced loading and a significant reduction in cardiorespiratory load.…”

Section: Introductionsupporting

confidence: 69%

Physical Effects of New Devices for Bricklayers

Vink

Miedema

Koningsveld

et al. 2002

International Journal of Occupational Safety and Ergonomics

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Bricklaying is a physically demanding job. Bricklayers frequently flex their trunk to pick up bricks and mortar and position these in a wall. The experienced workload is highest working with bricks at 0 to 50 cm from the floor. In this study the effects of 2 devices that have proven to be feasible in practice are evaluated.The 50 cm raise due to the 2 devices is experienced as comfortable, the estimated lumbar compression force was reduced, and observations indicate likewise. It is discussed that the field experiments have many drawbacks. Nevertheless, based on this study in combination with other literature the improvements could be recommended. bricklaying ergonomic innovations construction work musculoskeletal problemsThe authors would like to thank Jacques de Kroon of TNO Construction Industry for his inspiring and technical contribution to the project and all trade organizations for their collaboration.Correspondence and requests for offprints should be sent to Peter Vink, TNO Work and Employment,

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Section: Introductionsupporting

confidence: 69%

Physical Effects of New Devices for Bricklayers

Vink

Miedema

Koningsveld

et al. 2002

International Journal of Occupational Safety and Ergonomics

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“…Laying blocks involves a high physical workload and is associated with low back disorders among masons. Ja¨ger et al (1991) reported that an increase in block mass leads to an increase in the moment and compression force at the low back of 20 Nm and 1 kN, respectively, per 5 kg block mass. Latza et al (2000) found an increased risk of low back pain prevalence ratio (PR ¼ 2.6) for workers who lay large sandstone blocks (7-10 kg) for at least 2 h per shift compared with workers who do not engage in such work.…”

Section: Introductionmentioning

confidence: 99%

Effect of block weight on work demands and physical workload during masonry work

et al. 2008

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“…The questionnaire is based on a sophisticated biomechanical model describing forces in the lumbar spine during work activities (21). Reliability and different aspects of validity were tested according to the principles already presented in this report.…”

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confidence: 99%