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The Speed Calculated Hand Activity Level (HAL) Matches Observer Estimates Better Than the Frequency Calculated HAL

Part of the Advances in Intelligent Systems and Computing book series (AISC,volume 820)

Abstract

Hand Activity Level (HAL) can be estimated from observations (HALO), calculated from exertion frequency, F and duty cycle D (HALF) or from speed, S and D (HALS). Data collected by prospective cohort studies were used to compare these methods. There was 75% agreement between HALO and HALS (HALS = 1.02 × HALO −0.2, R2 = 0.78, F(1,1003) = 43665, p < .001), but only 30% agreement between HALO and HALF (HALF = 0.21 × HALO + 2.2, R2 = 0.04, F(1,1003) = 71.71, p < .001). HALS was more consistent with HALO since both are dependent on speed, and because HALS can be automated, it is more objective than HALF or HALO in this sample.

Keywords

  • Repetitive motion
  • Threshold limit value
  • Musculoskeletal disorders

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Correspondence to Robert G. Radwin .

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Akkas, O. et al. (2019). The Speed Calculated Hand Activity Level (HAL) Matches Observer Estimates Better Than the Frequency Calculated HAL. In: Bagnara, S., Tartaglia, R., Albolino, S., Alexander, T., Fujita, Y. (eds) Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018). IEA 2018. Advances in Intelligent Systems and Computing, vol 820. Springer, Cham. https://doi.org/10.1007/978-3-319-96083-8_71

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