Postural analysis of the trunk and shoulders in simulated real time

Keyserling, W. Monroe

doi:10.1080/00140138608968292

Cited by 140 publications

(61 citation statements)

References 9 publications

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“…In these comparisons, the variables of interest have been mainly frequency or duration of postures classified according to category limits set by the observational method. This kind of comparison may be sensitive to the "border lines" of the categories (32,34,67,(129)(130)(131)(132). In other words, if the observer's perception is systematically biased in comparison to the limit used by the accurate technical method, the probability of having a high correspondence will decrease if the true posture is close to a category border line ("boundary zone problem").…”

Section: Validity and Repeatability Of Observational Methodsmentioning

confidence: 99%

Systematic evaluation of observational methods assessing biomechanical exposures at work

Takala¹,

Pehkonen²,

Forsman³

et al. 2009

Scand J Work Environ Health

464

353

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Objectives This systematic review aimed to identify published observational methods assessing biomechanical exposures in occupational settings and evaluate them with reference to the needs of different users. MethodsWe searched scientific databases and the internet for material from 1965 to September 2008. Methods were included if they were primarily based on the systematic observation of work, the observation target was the human body, and the method was clearly described in the literature. A systematic evaluation procedure was developed to assess concurrent and predictive validity, repeatability, and aspects related to utility. At least two evaluators independently carried out this evaluation. ResultsWe identified 30 eligible observational methods. Of these, 19 had been compared with some other method(s), varying from expert evaluation to data obtained from video recordings or through the use of technical instruments. Generally, the observations showed moderate-to-good agreement with the corresponding assessments made from video recordings; agreement was the best for large-scale body postures and work actions. Postures of wrist and hand as well as trunk rotation seemed to be more difficult to observe correctly. Intra-and inter-observer repeatability were reported for 7 and 17 methods, respectively, and were judged mostly to be moderate or good.good. . ConclusionsWith training, observers can reach consistent results on clearly visible body postures and work activities. Many observational tools exist, but none evaluated in this study appeared to be generally superior. When selecting a method, users should define their needs and assess how results will influence decision-making.

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Section: Validity and Repeatability Of Observational Methodsmentioning

confidence: 99%

Systematic evaluation of observational methods assessing biomechanical exposures at work

Takala¹,

Pehkonen²,

Forsman³

et al. 2009

Scand J Work Environ Health

464

353

View full text Add to dashboard Cite

show abstract

“…The technique used was similar to that of OWAS (6, 7) and remains simpler than the methods developed by Corlett et al (20) or Keyserling (8). It allowed for an analysis of video recordings at the actual work speed and for the determination of the most strenuous phases of work, which had to be the object of further analysis.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, three classes of effort were recognized, namely, light « 3 kg), medium (3 to 10 kg), and heavy (> 10 kg). The classes adopted for the back 111 and upper limbs corresponded to positions generally considered as favorable, medium, or unfavorable (8).…”

Section: Posturementioning

confidence: 99%

Evaluation of the physical work load of bricklayers in the steel industry.

Malchaire¹,

Rezk-Kallah²

1991

Scand J Work Environ Health

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“…In traditional observatio~l methods the position of the arm is usually defined by estimating abduction and flexion angles of the upper arm (10,12,14,26,29,30). The reliability of such methods may be acceptable at least when the analysis is made froin video recordings which allow playback of the film.…”

Section: Lntermethods Reliabilitymentioning

confidence: 99%

“…There is still a lack of quantitative data, which hampers the implementation of efficient ergonomic prevention and intervention programs. Several observation methods for analyzing postures and movements have been developed (10)(11)(12)(13)(14)(15)(16). However, they are time-consuming and labor intensive (17).…”

mentioning

confidence: 99%