Combined exposures of whole-body vibration and awkward posture: a cross sectional investigation among occupational drivers by means of simultaneous field measurements

Raffler, Nastaran; Rissler, Jörg; Ellegast, Rolf; Schikowsky, C.; Kraus, Thomas; Ochsmann, Elke

doi:10.1080/00140139.2017.1314554

Cited by 28 publications

(14 citation statements)

References 12 publications

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“…The findings of the study may imply that the difference of postural load may be the main reason for the difference of the prevalence of LBP among different types of workers. In addition, the results of the logistic regression model and SEM showed that job tenure and vibration were positively associated with LBP, which was consistent with previous studies [26,27,53]. A plausible hypothesis is that the higher risk of LBP in workers with longer employment length is a consequence of a longer time exposed to occupational risk factors compared to those who have less employment length [54].…”

Section: Discussionsupporting

confidence: 89%

“…Results of studies also have provided evidence for the correlation between psychological factors and biomechanical factors [24,25]. Some studies have shown that vibration also plays an important role in the occurrence and development of LBP [26,27]. These risk factors are not independent and may interact with each other, and the complex relationships between these factors are still unclear.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Associations of Individual and Work-Related Factors with Low Back Pain among Manufacturing Workers Based on Logistic Regression and Structural Equation Model

Dong

Jin

Wang

et al. 2021

IJERPH

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Work-related musculoskeletal injuries are one of the major occupational health issues of the workers, especially low back pain (LBP). The aim of this study was to survey the prevalence of LBP among manufacturing workers and to identify associations of individual and work-related factors with LBP. A cross-sectional questionnaire study was performed with 1173 participating manufacturing workers. The questionnaire included individual factors, psychosocial and physical exposures, and musculoskeletal discomfort. It was analyzed by logistic regression and structural equation modeling (SEM). The 1-year prevalence of LBP among Chinese manufacturing workers was 33.6%. Logistic regression analysis showed that job tenure, awkward postures, vibration and job demand were positively—while social support and job control were negatively associated with LBP (p < 0.05). The SEM results indicated that, as shown in other studies, job types, job tenure, postural load, high job demand, low job control and vibration were directly associated with LBP, but also that job types, high job demand, low social support and vibration may have indirect effects on LBP—mediated by postural load.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Study on the Associations of Individual and Work-Related Factors with Low Back Pain among Manufacturing Workers Based on Logistic Regression and Structural Equation Model

Dong

Jin

Wang

et al. 2021

IJERPH

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“…This can be explained by the small number of measurements made and the lack of power of the study. The two other essential factors responsible for low back pain, namely constraining postures and heavy loads are not studied in this work [20,21]. Moreover, in this study, even if driving excavators remains the main task, drivers are also versatile and also perform maneuver tasks in support of their colleagues with very constraining handling and postures.…”

Section: Discussionmentioning

confidence: 90%

Preventive action with a population of excavator drivers exposed to whole-body vibration

Bossi¹,

Meert²

2021

WOR

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BACKGROUND: Whole-body vibration is a major cause of lower back pain among employees, and the medical and preventive care teams of occupational health departments are often confronted with lower back pain problems among machine operators. OBJECTIVES: The objectives of this research are to determine the number of excavator drivers exposed to whole-body vibration levels above 0.5m/s2, identify other exposure factors that may contribute to back pain, and propose corrective measures. METHODS: Vibration measurements were carried out on individual excavator drivers while they were observed carrying out working tasks, after which prevention advice is given. Factors which determine vibration levels are logged on to a database. RESULTS: The multivariate analysis of several determining factors shows vibration exposure levels vary depending on the varied work tasks being carried out. CONCLUSION: This study identifies exposed employees among excavator operators. For each workstation, the determining factors that could explain the high exposures to vibrations are identified. This work shows the important role of tasks on exposure levels. A better adaptation of the tools used to carry out work tasks would allow a decrease in the vibration level of this type of machine.

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“…Two prior studies have measured posture among drivers with direct methods (Hermanns et al 2008;Raffler et al 2017). However, none of these studies presented ROMs as a direct result of driving over obstacles.…”

Section: Discussionmentioning

confidence: 99%

“…Inertial measurement units (IMUs), common in navigation and now common in fitness trackers, may provide new information about postural loads and can be used synchronously to also measure acceleration in the seat of the vehicle as well as the body. Similar systems have been used to measure the posture of drivers in different types of vehicles (Hermanns et al 2008;Raffler et al 2017). However, neither of these studies presented postural loads as a result of mechanical shocks or within forestry.…”

Section: Introductionmentioning

confidence: 99%

Seated postural loads caused by shock-type whole-body vibration when driving over obstacles

Stenlund

Lundström

Lindroos

et al. 2020

International Journal of Forest Engineering

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Operators of mobile machines within forestry work long hours in seated postures while being exposed to whole-body vibration (WBV) that is associated with pain in the lower back and neck. Still, little is known about the contribution from postural loads. In this study postural loads and shock-type WBV exposure on drivers operating a forwarder during terrain-like conditions was measured and quantified using inertial measurement units (IMUs). Five male drivers drove a forwarder repeatedly over standardized steel obstacles using a predefined speed and posture followed by driving over natural obstacles along a terrain course using a self-selected speed and posture. IMUs were affixed along the spine, on the back of the head of the driver and on the seat to detect orientation, velocity, and acceleration. The result shows that the methodology for measuring WBV and postural load with IMUs is feasible. Postural loads, expressed as range of motions (ROMs), when driving over a single standardized obstacle at a speed of 3.3 km/h were up to 21°in the neck segments. Increasing vehicle speed and size of obstacles increased postural loads. The terrain course resulted in higher ROMs in all body segments compared to a standardized obstacle, a difference in sideway seat acceleration but no differences regarding angular velocities of the head. Mechanical shocks at the seat were prevalent but the action limit value was exceeded only for one driver. Postural loads remained small during all conditions indicating that the spine can remain stable during exposure to shock-type WBV of this nature.

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Combined exposures of whole-body vibration and awkward posture: a cross sectional investigation among occupational drivers by means of simultaneous field measurements

Cited by 28 publications

References 12 publications

Study on the Associations of Individual and Work-Related Factors with Low Back Pain among Manufacturing Workers Based on Logistic Regression and Structural Equation Model

Study on the Associations of Individual and Work-Related Factors with Low Back Pain among Manufacturing Workers Based on Logistic Regression and Structural Equation Model

Preventive action with a population of excavator drivers exposed to whole-body vibration

Seated postural loads caused by shock-type whole-body vibration when driving over obstacles

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