Circadian Rhythms of Psychomotor Vigilance, Mood, and Sleepiness in the Ultra-Short Sleep/Wake Protocol

Kline, Christopher E.; Durstine, J. Larry; Davis, James H.; Moore, Teresa A.; Devlin, Tina M.; Youngstedt, Shawn D.

doi:10.3109/07420521003648604

Cited by 39 publications

(24 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results agree with earlier studies which reported that cognitive performances were time-of-day dependent, with higher values at the end of the afternoon (Testu 2008;Montagner 2009;Touitou & Bégué 2010;Jarraya et al 2013). Moreover, the present results agree with recent studies reporting better RT scores in the afternoon (between 14:00 and 20:00 h) than in the morning (Kline et al 2010;.…”

Section: Discussionsupporting

confidence: 96%

Diurnal variation of cognitive performance and perceived difficulty in dart-throwing performance in 9–10-year-old boys

Elghoul

Frikha

Masmoudi

et al. 2014

Biological Rhythm Research

View full text Add to dashboard Cite

The aim of this study was to investigate variations in cognitive performance and difficulty perception in 9-10-year-old boys. Fifteen healthy boys (Age = 9.8 ± 0.4 years; Height = 146 ± 5.2 cm; Body mass = 34.2 ± 2.9 kg) performed three cognitive tasks, the reaction time (RT), the trail-making test, TMT (to evaluate flexibility), and the barrage tests (to evaluate selective attention [SA]). The tests were performed at 07:00 and 17:00 h. The results demonstrated that oral temperature, RT, and flexibility were significantly higher at 17:00 h than at 07:00 h. A significant main effect of diurnal variation was found for RT (t = 3.075, p = 0.008), SA (t = 2.43, p = 0.029), and executive function (TMT, Parts A and B) (t = 5.86, p < 0.001; t = 4.85, p < 0.001, respectively). However, these rhythms of cognitive performance were not correlated with the rhythm of core temperature at 07:00 h. In conclusion perceived difficulty was correlated with executive function in situations with higher level of difficulties.

show abstract

Section: Discussionsupporting

confidence: 96%

Diurnal variation of cognitive performance and perceived difficulty in dart-throwing performance in 9–10-year-old boys

Elghoul

Frikha

Masmoudi

et al. 2014

Biological Rhythm Research

View full text Add to dashboard Cite

show abstract

“…The range in phase angles indicates that if the WMZ had been estimated from habitual bedtime 31 or without a biological marker, 14,15 the WMZ may be missed completely in some participants or with a large error (> 1 h) on average. Some studies report that optimal performance occurs earlier than the expected WMZ when referenced to core body temperature minimum under entrained conditions (e.g., 180 to 210°, ~5-8 pm), 14,32 although data binning methods and infrequent performance trials may affect the ability to detect accurately the effect of the WMZ on neurobehavioral performance. 14,32 It is therefore suggested that even if an individual has a regular sleep-wake schedule, a strongly endogenous phase marker, ideally DLMO, is required to define the WMZ accurately and performance changes in relation to it.…”

Section: Discussionmentioning

confidence: 99%

Improved Neurobehavioral Performance during the Wake Maintenance Zone

Shekleton

Rajaratnam²,

Gooley

et al. 2013

Journal of Clinical Sleep Medicine

View full text Add to dashboard Cite

Study Objectives: Although impairment of daytime functioning is a symptom of many sleep disorders, there are limited data on their nature for some patient groups. The role of the circadian system on impaired functioning, specifi cally the wake maintenance zone (WMZ)-a ~3-h window of reduced sleep propensity that occurs shortly before the onset of melatonin synthesis-has received little attention. The study examined the infl uence of the WMZ on neurobehavioral performance under normal conditions and following sleep deprivation. Methods: Thirty-one adults (8 F; 18-29 y) completed an inpatient protocol including a baseline day (8-h sleep:16-h wake) and a ~50-h constant routine (CR), including regular assessment of plasma melatonin and neurobehavioral performance (i.e., auditory and visual psychomotor vigilance tests [aPVT, vPVT], Digit Symbol Substitution Test [DSST], and subjective sleepiness). Results: Performance in the 3 hours before the onset of melatonin secretion (i.e., the expected WMZ) was signifi cantly improved compared to performance during a 3-hour block earlier in the biological day, despite a longer time awake. The improvement during WMZ was most prominent after extended wakefulness (i.e., day 2 of the CR). Conclusions: These results suggest that alignment of circadian phase with respect to sleep-wake timing may affect cognitive performance, particularly when homeostatic sleep pressure is high, and especially when performance is assessed in the evening, near the predicted WMZ. The potential contribution of the WMZ to sleep-onset insomnia complaints should be assessed further, using objective neurobehavioral testing and simultaneous circadian phase measurement. Keywords: Cognition, sleep regulation, circadian, performance, melatonin, two-process model, PVT, DLMO Citation: Shekleton JA; Rajaratnam SMW; Gooley JJ; Van Reen E; Czeisler CA; Lockley SW. Improved neurobehavioral performance during the wake maintenance zone. J Clin Sleep Med 2013;9(4): 353-362. http://dx.doi.org/10.5664/jcsm.2588 S C I E N T I F I C I N V E S T I G A T I O N ST he assessment of daytime neurobehavioral impairments in sleep disordered patients has produced inconsistent results, particularly in patients with insomnia.1 In other sleep disorder populations, such as circadian rhythm sleep disorders (CRSDs), there is a paucity of investigations into the daytime impairments associated with the disorders.2 Yet, reports of daytime impairment are a core symptom in the diagnosis of many sleep disorders. The circadian system is known to modulate alertness and performance patterns, and is known to be dysregulated in CRSD. One mechanism by which the circadian system may manifest in the daytime impairments in these patients is via altered timing or amplitude of the wake maintenance zone (WMZ).The WMZ has previously been described as a 2-to 3-h window of reduced sleep propensity that occurs immediately prior to the evening onset of melatonin secretion and under normal conditions, occurs several hours prior to bedtime. 3,4 This window is c...

show abstract

“…For mood, previous studies showed that there was a significant time-of-day effect on tension, depression, anger, vigor, and confusion estimated by the profile of mood state (POMS) questionnaire (Hill et al 1991;Kline et al 2010). Total mood disturbance was greater when reported in the morning than in the afternoon.…”

Section: Introductionmentioning

confidence: 95%

“…On the other hand, time-of-day may influence not only athletic performance but also affect mood and mental performance (Hill et al 1991;Kline et al 2010). For mood, previous studies showed that there was a significant time-of-day effect on tension, depression, anger, vigor, and confusion estimated by the profile of mood state (POMS) questionnaire (Hill et al 1991;Kline et al 2010).…”

Section: Introductionmentioning

confidence: 97%

Effect of time of day on soccer specific skills in children: psychological and physiological responses

Masmoudi

Gharbi

Chtourou

et al. 2015

Biological Rhythm Research

View full text Add to dashboard Cite

The aim of the present study was to examine the effect of time-of-day on soccer specific skills and physiological and psychological parameters in children. Ten male children soccer players (age: 14.6 ± 0.8 years; height: 1.63± 0.4 m; body-mass: 52.5 ± 4.9 kg) performed two shooting accuracy tests before and after a 10 × 20-m dribbling sprint test with 20-s of passive recovery between repetitions. The measurements were taken at 08:00h, 13:00h and 17:00h in a randomized order. Mean heart rate (HR) was monitored during the dribbling test. At the beginning of each test session, blood pressure and intra-aural temperature were measured.Likewise, children were asked to complete the profile of mood state (POMS) and the Hooper Index questionnaires. Lactate concentration ([La]) was recorded at rest, post-fifth recovery periods and post-second accuracy test. Moreover, they indicate their rating of perceived exertion score (RPE) immediately at the end of each test session. The results of the present study showed that dribbling performance was higher at 13:00h and 17:00h in comparison with 08:00h (p<0.05). Likewise, intra-aural temperature, RPE scores, depression recorded by the POMS questionnaire and the stress recorded by the Hooper questionnaire were higher in the afternoon (p<0.05). However, the fatigue during the 10 × 20-m dribbling sprint and the kicking accuracy were not affected by the time-of-day. Moreover, [La], mean HR, systolic blood pressure and diastolic blood pressure were not affected by the time-of-day. For the correlations analysis between all parameters, the statistical analysis showed significant correlation only between TT and RPE scores and between MT and RPE scores (r=0.6, p<0.05). In conclusion, shooting accuracy was not affect by the time-of-day. However, dribbling performance of children is better in the afternoon than the morning. This diurnal variation could not been explained by variation in mood or in [La], mean HR, systolic blood pressure and diastolic blood pressure.

show abstract

Circadian Rhythms of Psychomotor Vigilance, Mood, and Sleepiness in the Ultra-Short Sleep/Wake Protocol

Cited by 39 publications

References 34 publications

Diurnal variation of cognitive performance and perceived difficulty in dart-throwing performance in 9–10-year-old boys

Diurnal variation of cognitive performance and perceived difficulty in dart-throwing performance in 9–10-year-old boys

Improved Neurobehavioral Performance during the Wake Maintenance Zone

Effect of time of day on soccer specific skills in children: psychological and physiological responses

Contact Info

Product

Resources

About