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Impact Of Sleep Restriction And Recovery On Motivation During Repeated Cognitive Performance Testing

Lange, D. and Hennecke, E. and Fronczek, J. and Bauer, A. and Aeschbach, D. and Elmenhorst, D. and Elmenhorst, Eva-Maria (2017) Impact Of Sleep Restriction And Recovery On Motivation During Repeated Cognitive Performance Testing. Sleep 2017, 03.-07.06.2017, Boston.

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Introduction: Both motivation and sleep deprivation affect cognitive performance. Especially during long-lasting studies with repeated cognitive performance tasks there is concern that subjects will lose motivation over time. Results may be confounded due to changes in motivation. Methods: In an ongoing study, 29 healthy volunteers performed 55 cognitive performance tasks at three-hourly intervals in a 12-day inpatient study. After two baseline nights with 8 h time in bed (TIB) the intervention group (N=20; mean age 26 ± 4 years, 9 females) underwent chronic sleep restriction for 5 nights (5 h TIB) with a following recovery night of 8 h TIB. The control group (N=9; mean age 25 ± 5 years, 3 females) had the opportunity to sleep 8 hours every night. Participants completed the Karolinska Sleepiness Scale (KSS) and a questionnaire about their motivation (from 1=very little/not motivated to 5=very motivated) at 6 p.m. on all days. Results: Wilcoxon signed-rank tests showed a significant decrease in motivation (p=.0439) and a significant increase in subjective sleepiness (p=.0184) from baseline (motivation: 2.8 ± 0.6 (SD), sleepiness: 3.2 ± 1.2) to the last day of chronic sleep restriction (motivation: 2.2 ± 0.5, sleepiness: 5.1 ± 1.8) for the experimental group. Motivation remained low after recovery sleep (2.2 ± 0.8; p=.0198). Sleepiness and motivation scores showed a significant Spearman correlation (r=-0.43, p<0.001). Discussion: Chronic sleep restriction for five days leads to an increase in sleepiness and a decrease in motivation. One night of recovery is insufficient to reverse the motivation loss, contrasting with the beneficial effect on sleepiness. During chronic sleep restriction conditions subjective motivation seems to decrease as a function of subjective sleepiness.

Item URL in elib:https://elib.dlr.de/114835/
Document Type:Conference or Workshop Item (Poster)
Title:Impact Of Sleep Restriction And Recovery On Motivation During Repeated Cognitive Performance Testing
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lange, D.denise.lange (at) dlr.deUNSPECIFIED
Hennecke, E.eva.hennecke (at) dlr.deUNSPECIFIED
Aeschbach, D.daniel.aeschbach (at) dlr.deUNSPECIFIED
Elmenhorst, Eva-Mariaeva-maria.elmenhorst (at) dlr.dehttps://orcid.org/0000-0003-0336-6705
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:sleep restriction, cognitive performance, motivation
Event Title:Sleep 2017
Event Location:Boston
Event Type:international Conference
Event Dates:03.-07.06.2017
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Somnosafe (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Sleep and Human Factors Research
Deposited By: Sender, Alina
Deposited On:02 Nov 2017 12:39
Last Modified:31 Jul 2019 20:12

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