Observer performance in estimating upper arm elevation angles under ideal viewing conditions when assisted by posture matching software
MetadataShow full item record
© 2016 Elsevier Ltd and The Ergonomics Society. Selecting a suitable body posture measurement method requires performance indices of candidate tools. Such data are lacking for observational assessments made at a high degree of resolution. The aim of this study was to determine the performance (bias and between- and within-observer variance) of novice observers estimating upper arm elevation postures assisted by posture matching software to the nearest degree from still images taken under ideal conditions. Estimates were minimally biased from true angles: the mean error across observers was less than 2°. Variance between observers was minimal. Considerable variance within observers, however, underlined the risk of relying on single observations. Observers were more proficient at estimating 0° and 90° postures, and less proficient at 60°. Thus, under ideal visual conditions observers, on average, proved proficient at high resolution posture estimates; further investigation is required to determine how non-optimal image conditions, as would be expected from occupational data, impact proficiency.
Showing items related by title, author, creator and subject.
Goh, K.; Morris, Susan; Lee, W.; Ring, A.; Tan, Tele (2017)© 2017 Springer-Verlag Berlin HeidelbergPerturbation-evoked responses (PERs) to a physical perturbation of postural stability have been detected using electroencephalography (EEG). Components of these responses are ...
Astfalck, Roslyn G (2009)The prevalence of low back pain (LBP) in the adolescent population is high, with rates approaching adult levels. It has previously been shown that those with LBP during adolescence are at greater risk of experiencing LBP ...
Predicting Directly Measured Trunk and Upper Arm Postures in Paper Mill Work From Administrative Data, Workers' Ratings and Posture ObservationsHeiden, M.; Garza, J.; Trask, C.; Mathiassen, Svend (2017)Objectives: A cost-efficient approach for assessing working postures could be to build statistical models for predicting results of direct measurements from cheaper data, and apply these models to samples in which only ...