Effects of Shift Work on the Postural and Psychomotor Performance of Night Workers

Effects of Shift Work on the Postural and Psychomotor Performance of Night Workers

Author Narciso, Fernanda Veruska Autor UNIFESP Google Scholar
Barela, Jose A. Google Scholar
Aguiar, Stefane A. Google Scholar
Carvalho, Adriana N. S. Google Scholar
Tufik, Sergio Autor UNIFESP Google Scholar
Mello, Marco Tulio de Autor UNIFESP Google Scholar
Abstract The purpose of the study was to investigate the effects of shift work on the psychomotor and postural performance of night workers. The study included 20 polysomnography technicians working schedule of 12-h night shift by 36-h off. On the first day of protocol, the body mass and height were measured, and an actigraph was placed on the wrist of each participant. On the second day of protocol, sleepiness by Karolinska Sleepiness Scale, postural control by force platform (30 seconds) and psychomotor performance by Psychomotor Vigilance Task (10 minutes) were measured before and after 12-h night work. Results showed that after 12-h night work, sleepiness increased by 59% (p<0.001), postural control variables increased by 9% (p = 0.048), and 14% (p = 0.006). Mean reaction time, and the number of lapses of attention increased by 13% (p = 0.006) and 425% (p = 0.015), respectively, but the mean reciprocal reaction time decreased by 7%. In addition, there were correlations between sleepiness and postural control variables with opened eyes (r = 0.616, 95% confidence interval [CI] = 0.361-0.815

r = 0.538

95% CI = 0.280-0.748) and closed eyes (r = 0.557

95% CI = 0.304-0.764, r = 0497

95% CI = 0.325-0.715) and a pronounced effect of sleepiness on postural sway (R-2 = 0.393

95% CI = 0.001-0.03). Therefore, 12-h night work system and sleepiness showed a negative impact in postural and psychomotor vigilance performance of night workers. As unexpected, the force platform was feasibility to detect sleepiness in this population, underscoring the possibility of using this method in the workplace to prevent occupational injuries and accidents.
xmlui.dri2xhtml.METS-1.0.item-coverage San Francisco
Language English
Date 2016
Published in Plos One. San Francisco, v. 11, n. 4, p. -, 2016.
ISSN 1932-6203 (Sherpa/Romeo, impact factor)
Publisher Public Library Science
Extent -
Origin http://dx.doi.org/10.1371/journal.pone.0151609
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000374973600011
URI https://repositorio.unifesp.br/handle/11600/56040

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