Relationship between Objective and Subjective Assessment of Experimentally Induced Fatigue

Wéber, A.; Jermini, C.; Grandjean, E.

doi:10.1080/00140137508931448

Cited by 25 publications

(10 citation statements)

References 6 publications

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“…Grandjean's scale is a subjective method for diagnosing mental load [18,19,20]. It consists of 14 subscales in the form of 100-mm strips with terms describing opposite feelings at their ends, pertaining to one's mood, e.g., relaxed-tense (6 subscales), or fatigue, e.g., energetic-lazy (8 subscales).…”

Section: Grandjean's Scale: Subjective Methods For Assessing Mental Loadmentioning

confidence: 99%

Ergonomics Assessment of Composite Ballistic Inserts for Bullet- and Fragment-Proof Vests

Majchrzycka

Brochocka

Łuczak

et al. 2013

International Journal of Occupational Safety and Ergonomics

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Personal protective equipment worn by uniformed services (e.g., the police and the military) must ensure protection against bodily injuries. However, a high degree of protection is always associated with significant discomfort. This article presents the results of an assessment of the ergonomics parameters of new special purpose products, ballistic inserts with improved ballistic resistance, and an assessment of the impact of the burden related to their use on the psychomotor performance of the subjects. An obstacle course and subjective ergonomics assessment questionnaires were used in tests. Thermal discomfort was also assessed. Psychological testing included tests enabling an assessment of the subjects' cognitive and psychomotor performance, and a subjective assessment of mental load. The tests did not show any decrease in the comfort of use of the new inserts with improved ballistic resistance compared to the inserts currently used.

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Section: Grandjean's Scale: Subjective Methods For Assessing Mental Loadmentioning

confidence: 99%

Ergonomics Assessment of Composite Ballistic Inserts for Bullet- and Fragment-Proof Vests

Majchrzycka

Brochocka

Łuczak

et al. 2013

International Journal of Occupational Safety and Ergonomics

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“…11 Although the results of more operational outcomes such as time to first oral intake, mobility, and length of hospital stay appear to be clinically relevant, they lack experimental control. The test consisted of 121 melodies played over 127 seconds, 11 of which were different and constituted the signals embedded randomly among the 110 identical nonsignals.…”

Section: Measurement Of Postoperative Recoverymentioning

confidence: 98%

Abdominal Wall Lift Versus Positive-Pressure Capnoperitoneum for Laparoscopic Cholecystectomy

2004

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“…Third, the method appears to be useful in assessing postural stress even when postural exertions are not demanding (Kuorinka, 1981;Boussenna et al, 1982;Wiker, 1986). Fourth, cross-modal estimates of fatigue or discomfort have proven to be reliable for a wide range of muscle exertion levels or fatigue states (Caldwell and Smith, 1966;Weber et al, 1975). Finally, use of cross-modal matching techniques such as those described by Corlett and Bishop (1976) provide a means to simultaneously assess a large number of body regions and to determine which regions are most stressed.…”

Section: Cross-modal Gauging Of Fatigue and Discomfortmentioning

confidence: 99%

Shoulder postural fatigue and discomfort

Wiker

Chaffin

Langolf

1990

International Journal of Industrial Ergonomics

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Does greater strength capacity in the shoulder-complex afford increased protection against regionalized fatigue and discomfort induced by sustained awkward arm postures in light-weight manual assembly environments? This question was addressed by testing the relationship between differences in shoulder complex strength capacity, produced by variations in arm posture within a subject, and among subjects assuming equivalent arm postures, and severity of fatigue and discomfort sensed during a low-exertion manual performance task. Experimental findings showed that: (a) awkward arm postures produced substantial and rapid onset of postural fatigue and discomfort during a light-weight manual performance task where strength demands were low (i.e., less than 15 percent of maximum voluntary contraction (MVC)), (b) variations in strength capability found among arm postures within an individual subject, or among subjects assuming the same arm posture, did not affect onset of substantial fatigue or discomfort when hands are postured near or above shoulder level, and (c) postures which simply appeared to be awkward, or which compromised strength capacity (e.g., working with the arm to the side of the body, or aligned in the coronal plane), did not necessarily increase discomfort of fatigue. Our findings suggest caution against sole reliance upon population or individual worker upper-extremity strength capabilities as predictors of fatigue and discomfort in the shoulder complex when manual exertions are small (e.g., light-weight manual assembly activities involving small parts or small hand-tools) and hands are postured at or above shoulder level. RELEVANCE TO INDUSTRYStronger workers are often selected for manual assembly overhead, or when other awkward upper extremity postures must be sustained. Measurements of subject upper-extremity isometric strength capability in an array of arm postures, and computation of external shoulder load moments, were of no significant value in predicting or gauging onset or severity of fatigue and discomfort experienced in elevated arm postures. Ergonomists are encouraged to eliminate overhead work even in light-weight manual assembly environments and to extend their upper-extremity posture analyses beyond evaluation of anthropometrics, shoulder external load moments, and upper extremity strength capability when specifying arm and shoulder postures in light-weight manual assembly environments,

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Relationship between Objective and Subjective Assessment of Experimentally Induced Fatigue

Cited by 25 publications

References 6 publications

Ergonomics Assessment of Composite Ballistic Inserts for Bullet- and Fragment-Proof Vests

Ergonomics Assessment of Composite Ballistic Inserts for Bullet- and Fragment-Proof Vests

Abdominal Wall Lift Versus Positive-Pressure Capnoperitoneum for Laparoscopic Cholecystectomy

Shoulder postural fatigue and discomfort

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