A Comparison of Three Observational Techniques for Assessing Postural Loads in Industry

Kee, Dohyung; Karwowski, Waldemar

doi:10.1080/10803548.2007.11076704

Cited by 169 publications

(141 citation statements)

References 28 publications

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“…Inter-observer and intra-observer agreements in the application of OWAS by human observers have been studied in other works (De Bruijn et al, 1998;Karhu et al, 1977;Kee and Karwowski, 2007;Kivi and Mattila, 1991;Mattila et al, 1993); this issue was beyond the scope of the present work. Our aim was to determine the degree of similarity between the observations agreed upon by human evaluators and those obtained by KinectÔ.…”

Section: Discussionmentioning

confidence: 95%

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Using Kinect™ sensor in observational methods for assessing postures at work

2014

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a b s t r a c tThis paper examines the potential use of KinectÔ range sensor in observational methods for assessing postural loads. Range sensors can detect the position of the joints at high sampling rates without attaching sensors or markers directly to the subject under study. First, a computerized OWAS ergonomic assessment system was implemented to permit the data acquisition from KinectÔ and data processing in order to identify the risk level of each recorded postures. Output data were compared with the results provided by human observers, and were used to determine the influence of the sensor view angle relative to the worker. The tests show high inter-method agreement in the classification of risk categories (Proportion agreement index ¼ 0.89 k ¼ 0.83) when the tracked subject is facing the sensor. The camera's point of view relative to the position of the tracked subject significantly affects the correct classification of the postures. Although the results are promising, some aspects involved in the use of low-cost range sensors should be further studied for their use in real environments.

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Section: Discussionmentioning

confidence: 95%

“…This system is able to determine the distance of objects in the environment. This process and the characteristics of the data collected by KinectÔ can be consulted in Henry et al (2012) or Khoshelham and Elberink (2012).…”

Section: Introductionmentioning

confidence: 99%

Using Kinect™ sensor in observational methods for assessing postures at work

2014

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“…REBA has been developed and can be used for assessment workloads with manual material handling tasks (Hignett & McAtamney, 2000). This tool has been employed in studies involving posture and lifting, and its use has been studied to determine the benefits and drawbacks of observational techniques for assessing postural load (Kee and Karwowski, 2007). One of the primary benefits of the REBA tool is that it allows for variance with respect to the neutral postures.…”

Section: Apparatus and Assessment Toolsmentioning

confidence: 99%

Assessment of the physical demands of waste collection tasks

2015

Global NEST Journal

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This study features an analysis of the influences and effects of different postures performed within tasks of waste collection. Four men, ages 30, 46, 60 and 65, and two women, ages 38 and 48, took part in this study. The assessment makes use of a 3D Static Strength Prediction Program (3DSSPP™) to analyze the lifting and dumping postures observed in the experiment and evaluate strength requirements and the lower back impact of the different tasks. Additional analysis tools Rapid Upper Limb Assessment (RULA) and Rapid Entire Body Assessment (REBA) were used to assess the risks associated with the tasks, and assessing the usability of this tool-setup to evaluate this kind of tasks with respect to the results expected. 3DSSPP results showed that only 86% of the population would be able to lift 9kg in this posture and 96% of the population would be capable of performing dumping. The results obtained using RULA and REBA indicated that the lifting and dumping postures are in need of change as soon as possible. Overall, this paper evaluates the postural risks of waste collection tasks mainly considering lifting and dumping tasks and assesses the physiological impacts on waste collection task performance.

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“…There are still few studies that compare the results of different methods and those are mainly qualitative [9,10,11,12,13,14,15,16,17,18]. Only few other studies quantify the differences and similarities [19,20,21,22,23,24]. Some of these studies cover only exposure to the low back [16,17,18,19].…”

Section: Introductionmentioning

confidence: 99%