Tags

Type your tag names separated by a space and hit enter

The relationship between subjective and objective sleepiness and performance during a simulated night-shift with a nap countermeasure.
Appl Ergon. 2010 Dec; 42(1):52-61.AE

Abstract

The aim of the present study was to investigate the relationship between perceived and actual sleepiness and performance during a simulated night-shift that included a 30-min night-nap as an on-duty sleepiness countermeasure. Twenty-four healthy young adults (nine males, fifteen females) participated in a repeated measures design comprising two experimental conditions: no night-nap and 30-min night-nap. Both groups were given a 2-h prophylactic afternoon sleep opportunity (1500-1700 h). Measures of subjective sleepiness (Stanford Sleepiness Scale, Karolinska Sleepiness Scale and Visual Analogue Scale), objective sleepiness (sleep latency tests), objective performance (Symbol-Digit Substitution Task) and reaction time (Psychomotor Vigilance Task) were taken before the night-nap (0230 h) and at several intervals post-nap. Time-series correlation analyses indicated that subjective sleepiness was less correlated with objective sleepiness and objective performance when participants were given a 30-min night-nap. However subjective sleepiness and reaction time performance was strongly correlated in both conditions, and there was no significant difference between the nap and no-nap conditions. Consistent with previous research, results of the present study indicate that subjective and objective indicators of sleepiness and performance may not always correspond, and this relationship may be reduced by the inclusion of a night-nap.

Links

Publisher Full Text

Authors+Show Affiliations

Tremaine R
Centre for Sleep Research, University of South Australia, GPO Box 2471, Adelaide, SA 5001, Australia. Rebecca.Tremaine@postgrads.unisa.edu.au
Dorrian J
No affiliation info available
Lack L
No affiliation info available
Lovato N
No affiliation info available
Ferguson S
No affiliation info available
Zhou X
No affiliation info available
Roach G
No affiliation info available

MeSH

Circadian RhythmFemaleHumansMaleMental FatiguePsychomotor PerformanceSleep DeprivationWakefulnessWork Schedule ToleranceYoung Adult

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20471003

Citation

Tremaine, Rebecca, et al. "The Relationship Between Subjective and Objective Sleepiness and Performance During a Simulated Night-shift With a Nap Countermeasure." Applied Ergonomics, vol. 42, no. 1, 2010, pp. 52-61.
Tremaine R, Dorrian J, Lack L, et al. The relationship between subjective and objective sleepiness and performance during a simulated night-shift with a nap countermeasure. Appl Ergon. 2010;42(1):52-61.
Tremaine, R., Dorrian, J., Lack, L., Lovato, N., Ferguson, S., Zhou, X., & Roach, G. (2010). The relationship between subjective and objective sleepiness and performance during a simulated night-shift with a nap countermeasure. Applied Ergonomics, 42(1), 52-61. https://doi.org/10.1016/j.apergo.2010.04.005
Tremaine R, et al. The Relationship Between Subjective and Objective Sleepiness and Performance During a Simulated Night-shift With a Nap Countermeasure. Appl Ergon. 2010;42(1):52-61. PubMed PMID: 20471003.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The relationship between subjective and objective sleepiness and performance during a simulated night-shift with a nap countermeasure. AU - Tremaine,Rebecca, AU - Dorrian,Jill, AU - Lack,Leon, AU - Lovato,Nicole, AU - Ferguson,Sally, AU - Zhou,Xuan, AU - Roach,Greg, Y1 - 2010/05/14/ PY - 2009/05/07/received PY - 2010/04/16/revised PY - 2010/04/20/accepted PY - 2010/5/18/entrez PY - 2010/5/18/pubmed PY - 2011/4/26/medline SP - 52 EP - 61 JF - Applied ergonomics JO - Appl Ergon VL - 42 IS - 1 N2 - The aim of the present study was to investigate the relationship between perceived and actual sleepiness and performance during a simulated night-shift that included a 30-min night-nap as an on-duty sleepiness countermeasure. Twenty-four healthy young adults (nine males, fifteen females) participated in a repeated measures design comprising two experimental conditions: no night-nap and 30-min night-nap. Both groups were given a 2-h prophylactic afternoon sleep opportunity (1500-1700 h). Measures of subjective sleepiness (Stanford Sleepiness Scale, Karolinska Sleepiness Scale and Visual Analogue Scale), objective sleepiness (sleep latency tests), objective performance (Symbol-Digit Substitution Task) and reaction time (Psychomotor Vigilance Task) were taken before the night-nap (0230 h) and at several intervals post-nap. Time-series correlation analyses indicated that subjective sleepiness was less correlated with objective sleepiness and objective performance when participants were given a 30-min night-nap. However subjective sleepiness and reaction time performance was strongly correlated in both conditions, and there was no significant difference between the nap and no-nap conditions. Consistent with previous research, results of the present study indicate that subjective and objective indicators of sleepiness and performance may not always correspond, and this relationship may be reduced by the inclusion of a night-nap. SN - 1872-9126 UR - https://www.unboundmedicine.com/medline/citation/20471003/The_relationship_between_subjective_and_objective_sleepiness_and_performance_during_a_simulated_night_shift_with_a_nap_countermeasure_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0003-6870(10)00068-2 DB - PRIME DP - Unbound Medicine ER -