+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Sleepiness as measured by modified multiple sleep latency testing varies as a function of preceding activity

Sleepiness as measured by modified multiple sleep latency testing varies as a function of preceding activity

Sleep 21(5): 477-483

Many studies have examined the impact of varying levels of sleep loss or sleep disturbance upon the multiple sleep latency test (MSLT). Virtually no studies have examined the impact of level of physiologic arousal upon measured sleep tendency. In the current study, 12 normal-sleeping young adults took modified multiple sleep latency tests after either watching television for 15 minutes or after a 5-minute walk. This entire protocol was repeated on another week after subjects had been partially sleep deprived by reducing their time in bed by 50%. It was hypothesized that sleep latencies would be significantly shorter after watching television as compared to walking and after partial sleep loss as compared to normal sleep and that these effects would be independent. The results of the study supported all of these hypotheses. ANOVAs showed no significant interaction effects, but sleep latencies were 11.6 and 5.8 minutes following the walk and watching television respectively. Sleep latencies were 9.8 and 7.6 minutes following baseline and partial sleep-deprivation conditions. Heart rate, used as a measure of physiological arousal, was significantly elevated throughout naps following the walk as compared to naps following television viewing. On a theoretical level, these data imply that measured sleepiness is a combination of sleep drive and physiological arousal, and these effects appear to be independent. On a practical level, these data indicate that more care may be necessary in monitoring the activity levels of patients and subjects prior to MSLT evaluations, since physiological arousal may mask the measurement of sleep tendency. Knowledge of the role of arousal in modulating sleepiness can be important in many settings.

(PDF emailed within 0-6 h: $19.90)

Accession: 033411458

Download citation: RISBibTeXText

PMID: 9703587

DOI: 10.1093/sleep/21.5.477

Related references

Daytime sleepiness measured by the Epworth Sleepiness Scale and the Multiple Sleep Latency Test in patients with sleep disorders. Neurology 46(2 SUPPL ): A485, 1996

Drug testing in children with excessive daytime sleepiness during multiple sleep latency testing. Journal of Clinical Sleep Medicine 10(8): 897-901, 2015

Nightly sleep duration in the 2-week period preceding multiple sleep latency testing. Journal of Clinical Sleep Medicine 3(6): 613-619, 2007

Correlation of Epworth Sleepiness Scale with multiple sleep latency test and its diagnostic accuracy in assessing excessive daytime sleepiness in patients with obstructive sleep apnea hypopnea syndrome. Chinese Medical Journal 126(17): 3245-3250, 2014

The multiple sleep latency test and Epworth sleepiness scale in the assessment of daytime sleepiness. Journal of Sleep Research 9(4): 399-401, 2000

An alternative to the multiple sleep latency test for determining sleepiness in narcolepsy and hypersomnia: polygraphic score of sleepiness. Sleep 9(1 Pt 2): 243-245, 1986

Ontogeny of human sleepiness as measured by sleep latency. Dinges, D F And R J Broughton (Ed ) Sleep And Alertness: Chronobiological, Behavioral, And Medical Aspects Of Napping Xiii+322p Raven Press: New York, New York, Usa Illus Maps 53-70, 1989

Sleep disorders and daytime sleepiness in children with attention-deficit/hyperactivity disorder: a two-night polysomnographic study with a multiple sleep latency test. Sleep Medicine 11(9): 922-928, 2011

The multiple sleep latency test a measure of daytime sleepiness. Coblentz, A (Ed ) Nato Asi (Advanced Science Institutes) Series D Behavioural And Social Sciences, Vol 49 Vigilance And Performance in Automatized Systems; Workshop, Paris, France, September 19-23, 1988 Xxvi+324p Kluwer Academic Publishers: Dordrecht, Netherlands; Boston, Massachusetts, Usa Illus 23-30, 1989

Oculomotor changes are associated to daytime sleepiness in the multiple sleep latency test. Journal of Sleep Research 14(2): 107-112, 2005

Microsleep and sleepiness: a comparison of multiple sleep latency test and scoring of microsleep as a diagnostic test for excessive daytime sleepiness. Sleep Medicine 4(1): 63-67, 2003

Application of the multiple sleep latency test in disorders of excessive sleepiness. Electroencephalography & Clinical Neurophysiology 53(4): 443-452, 1982

Multiple sleep latency tests in patients with excessive daytime sleepiness. Neurophysiologie Clinique 22(SUPPL 1): 69S, 1992

Association of daytime sleepiness with obstructive sleep apnoea and comorbidities varies by sleepiness definition in a population cohort of men. Respirology 21(7): 1314-1321, 2016

A tapping task as measure of sleepiness in a behavioral multiple sleep latency test. Journal of Sleep Research 3(SUPPL 1): 39, 1994