Sensitivity, reliability and the effects of diurnal variation on a test battery of field usable upper limb fatigue measures.
Fatigue has been linked to deficits in production quality and productivity and, if of long duration, work-related musculoskeletal disorders. It may thus be a useful risk indicator and design and evaluation tool. However, there is limited information on the test-retest reliability, the sensitivity and the effects of diurnal fluctuation on field usable fatigue measures. This study reports on an evaluation of 11 measurement tools and their 14 parameters. Eight measures were found to have test-retest ICC values greater than 0.8. Four measures were particularly responsive during an intermittent fatiguing condition. However, two responsive measures demonstrated rhythmic behaviour, with significant time effects from 08:00 to mid-afternoon and early evening. Action tremor, muscle mechanomyography and perceived fatigue were found to be most reliable and most responsive; but additional analytical considerations might be required when interpreting daylong responses of MMG and action tremor. Practitioner Summary: This paper presents findings from test-retest and daylong reliability and responsiveness evaluations of 11 fatigue measures. This paper suggests that action tremor, muscle mechanomyography and perceived fatigue were most reliable and most responsive. However, mechanomyography and action tremor may be susceptible to diurnal changes.
a Department of Kinesiology , University of Waterloo , Waterloo , Canada.
Marcus
http://orcid.org/0000-0003-3192-1470
M
Yung
a Department of Kinesiology , University of Waterloo , Waterloo , Canada.|b Centre of Research Expertise for the Prevention of Musculoskeletal Disorders , University of Waterloo , Waterloo , Canada.
Richard P
RP
Wells
D000328:Adult; D002940:Circadian Rhythm; D005080:Exercise Test / Q000379:methods / Q000706:statistics & numerical data*; D005221:Fatigue / Q000175:diagnosis* / Q000523:psychology; D005260:Female; D064368:Healthy Volunteers; D006801:Humans; D008297:Male; D018763:Muscle Fatigue / Q000502:physiology; D009140:Musculoskeletal Diseases / Q000175:diagnosis* / Q000523:psychology; D009784:Occupational Diseases / Q000175:diagnosis* / Q000523:psychology; D010465:Perception; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013997:Time Factors; D014202:Tremor / Q000175:diagnosis / Q000523:psychology; D034941:Upper Extremity / Q000503:physiopathology; D055815:Young Adult
Fatigue; diurnal fluctuations; field testing; measurement; reliability