Effect of sleep deprivation on diurnal variation of vertical perception and postural control

The aim of the study was to test the effect of total sleep deprivation on performance and time-of-day pattern of subjective visual vertical (SVV) and postural control. Nineteen healthy, young participants (4 women and 15 men 21.9 ± 1.2 yr) were engaged in two counterbalanced experimental sessions with or without total sleep deprivation. Oral temperature, Karolinska Sleepiness Scale, and visual analogic scale for fatigue, postural control, and SVV were randomly measured every 4 h, from 0600 to 2200. A linear mixed model was used to capture the effect of time of day and sleep condition as factors. A classical adjusted COSINOR function was then used to modelize this daily variation. After the control night of sleep, SVV as well as oral temperature, sleepiness, and fatigue showed significant time-of-day variation, contrasting with measures of postural control which remained stable across the day. After sleep deprivation, SVV showed no diurnal variation, but its mean deviation value increased by 29%. Postural control capability also decreased after sleep deprivation, with a higher center of pressure surface (+70.4%) and total length (+7.37%) but remained stable throughout the day. These results further confirm the negative effect of sleep loss on postural control capability. Even if a direct relationship cannot be confirmed, the disruption of SVV capacity after sleep deprivation could strongly play a role in postural control capacity changes. Sleep deprivation should be considered as a potent factor involved in balance loss and subsequent fall. NEW & NOTEWORTHY The topic of sleep deprivation and postural control is not understood, with discrepancy among results. This study described that postural control displays a stable level throughout the day and that sleep deprivation, even if it increases postural sway, does not affect this stable diurnal pattern. The modification of the perception of the vertical level after sleep deprivation could strongly play a role in the observed changes in postural control capacity.

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0311 The Impairments in Emotional Perception Following Total Sleep Deprivation and the Restorative Effects of Napping and Time of Day

SLEEP ◽

10.1093/sleep/zsaa056.308 ◽

2020 ◽

Vol 43 (Supplement_1) ◽

pp. A117-A117

Author(s):

T J Cunningham ◽

R M Bottary ◽

E A Kensinger ◽

R Stickgold

Keyword(s):

Sleep Deprivation ◽

Emotion Perception ◽

Time Of Day ◽

Error Rates ◽

Emotional Intensity ◽

Total Sleep Deprivation ◽

Emotional Perception ◽

Recovery Sleep ◽

Socially Relevant ◽

The Impact

Abstract Introduction The ability to perceive emotions is a socially-relevant skill critical for healthy interpersonal functioning, while deficits in this ability are associated with psychopathology. Total sleep deprivation (TSD) has been shown to have deleterious effects on emotion perception, yet the extent to which these impairments persist across the day with continued wakefulness, or if brief periods of recovery sleep can restore emotion perception abilities, remains unexplored. Methods Participants viewed slideshows of faces ranging in emotional expression and were asked to categorize (Happy, Sad, Angry, Neutral) and rate the emotional intensity (1-9) of each face at baseline (2100; Session 1), at 0900 (Session 2) following a night of sleep or TSD, and at 1400 (Session 3) following either continued wakefulness (wake group) or a 90-minute nap opportunity (nap group). Results Emotion categorization ability marginally improved from Session 1 to Session 2 following overnight sleep, however, no changes in emotion intensity ratings or vigilance were observed. TSD led to an increase in error rates during vigilance testing [t(46)=2.9, p=0.005] and impairment in emotion categorization ability [t(46)=5.5, p<0.001] from Session 1 to Session 2, although by Session 3 performance levels on both measures returned to baseline for all TSD participants. TSD also led to a decrease in emotional intensity ratings from Session 1 to Session 2, particularly for the highest tertile of emotional faces [6-9; t(46)=6.1, p<0.001]. These ratings remained suppressed at Session 3 in both the wake [t(25)=7.8, p<0.001] and nap [t(18)=3.1, p=0.006] groups. Conclusion These results indicate that time of day effects, with or without any additional benefit of a nap, can restore the impairments in vigilance and emotional categorization caused by TSD. The ability to discriminate levels of emotional intensity, however, is not restored by time of day or napping, suggesting that this ability is more sensitive to the impact of TSD. Support

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0265 Cortisol and C-Reactive Protein Fail to Predict Individual Differences in Neurobehavioral Performance Responses to Total Sleep Deprivation and Psychological Stress

SLEEP ◽

10.1093/sleep/zsaa056.263 ◽

2020 ◽

Vol 43 (Supplement_1) ◽

pp. A101-A101

Author(s):

N Goel ◽

E M Yamazaki ◽

L E MacMullen ◽

A J Ecker

Keyword(s):

Individual Differences ◽

Sleep Deprivation ◽

Psychological Stress ◽

Salivary Cortisol ◽

Time Of Day ◽

C Reactive Protein ◽

Total Sleep Deprivation ◽

Time Points ◽

Reactive Protein ◽

Recovery Sleep

Abstract Introduction Individuals show marked differential vulnerability in neurobehavioral deficits from psychosocial stress and sleep deprivation. Although changes in salivary cortisol and C-reactive protein (CRP) typically occur across total sleep deprivation (TSD) and recovery sleep, whether these biological markers during fully rested conditions predict individual differences in cognitive performance during TSD and stress remains unknown. Methods Thirty-one healthy adults (ages 27–53; mean ± SD, 35.4 ± 7.1y; 14 females) participated in a five-day experiment consisting of two 8h time-in-bed (TIB) baseline nights, followed by 39h TSD, and two 8h-10h TIB recovery nights. A modified Trier Social Stress Test (TSST) was conducted on the day of TSD to induce psychological stress. Salivary cortisol and CRP from blood were obtained at six time points during the study (pre-study, baseline, during TSD, during TSD after the TSST, after recovery, and post-study). A median split of TSD performance [total lapses (>500 ms response time) and errors] on the 10-minute Psychomotor Vigilance Test (PVT) defined cognitively resilient (n=15) and cognitively vulnerable (n=16) groups. Repeated measures ANOVA and post-hoc comparisons corrected for multiple testing, examined cortisol and CRP across time points between groups. Results In both cognitively resilient and vulnerable individuals, cortisol increased with TSD compared to baseline in the morning and decreased with TSD + psychological stress in the afternoon compared to TSD alone. By contrast, there were no significant changes in CRP levels throughout the experiment. In addition, there were no significant time*group interactions in cortisol or CRP levels. Conclusion Salivary cortisol increased with TSD compared to baseline and showed a time-of-day effect with stress during TSD. Notably, cortisol and CRP did not differ between cognitively resilient and vulnerable individuals across TSD, psychological stress or recovery sleep and thus are not reliable biomarkers for predicting performance under these conditions. Support NASA NNX14AN49G.

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Fatigue-Induced Alterations of Static and Dynamic Postural Control in Athletes With a History of Ankle Sprain

Journal of Athletic Training ◽

10.4085/1062-6050-48.1.08 ◽

2013 ◽

Vol 48 (2) ◽

pp. 203-208 ◽

Cited By ~ 31

Author(s):

Simon Steib ◽

Astrid Zech ◽

Christian Hentschke ◽

Klaus Pfeifer

Keyword(s):

Postural Control ◽

Ankle Sprain ◽

Mixed Model ◽

Linear Mixed Model ◽

Center Of Pressure ◽

Sport Activity ◽

Sensorimotor Control ◽

Treadmill Running ◽

History Of ◽

Anterior Posterior

Context: Sensorimotor control is impaired after ankle injury and in fatigued conditions. However, little is known about fatigue-induced alterations of postural control in athletes who have experienced an ankle sprain in the past. Objective: To investigate the effect of fatiguing exercise on static and dynamic balance abilities in athletes who have successfully returned to preinjury levels of sport activity after an ankle sprain. Design: Cohort study. Setting: University sport science research laboratory. Patients or Other Participants: 30 active athletes, 14 with a previous severe ankle sprain (return to sport activity 6–36 months before study entry; no residual symptoms or subjective instability) and 16 uninjured controls. Intervention(s): Fatiguing treadmill running in 2 experimental sessions to assess dependent measures. Main Outcome Measure(s): Center-of-pressure sway velocity in single-legged stance and time to stabilization (TTS) after a unilateral jump-landing task (session 1) and maximum reach distance in the Star Excursion Balance Test (SEBT) (session 2) were assessed before and immediately after a fatiguing treadmill exercise. A 2-factorial linear mixed model was specified for each of the main outcomes, and effect sizes (ESs) were calculated as Cohen d. Results: In the unfatigued condition, between-groups differences existed only for the anterior-posterior TTS (P = .05, ES = 0.39). Group-by-fatigue interactions were found for mean SEBT (P = .03, ES = 0.43) and anterior-posterior TTS (P = .02, ES = 0.48). Prefatigue versus postfatigue SEBT and TTS differences were greater in previously injured athletes, whereas static sway velocity increased similarly in both groups. Conclusions: Fatiguing running significantly affected static and dynamic postural control in participants with a history of ankle sprain. Fatigue-induced alterations of dynamic postural control were greater in athletes with a previous ankle sprain. Thus, even after successful return to competition, ongoing deficits in sensorimotor control may contribute to the enhanced ankle reinjury risk.

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Total Sleep Deprivation and Recovery Sleep Affect the Diurnal Variation of Agility Performance: The Gender Differences

The Journal of Strength and Conditioning Research ◽

10.1519/jsc.0000000000002614 ◽

2021 ◽

Vol 35 (1) ◽

pp. 132-140 ◽

Cited By ~ 1

Author(s):

Mohamed Romdhani ◽

Omar Hammouda ◽

Khawla Smari ◽

Yassine Chaabouni ◽

Kacem Mahdouani ◽

...

Keyword(s):

Gender Differences ◽

Sleep Deprivation ◽

Diurnal Variation ◽

Total Sleep Deprivation ◽

Recovery Sleep

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0225 The Time-of-day Effect of Cognitive Control After 36h Total Sleep Deprivation

SLEEP ◽

10.1093/sleep/zsy061.224 ◽

2018 ◽

Vol 41 (suppl_1) ◽

pp. A88-A88

Author(s):

H Liang ◽

Q Zhang ◽

F Fan ◽

N Ma

Keyword(s):

Cognitive Control ◽

Sleep Deprivation ◽

Time Of Day ◽

Total Sleep Deprivation

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Prediction of the antidepressant response to total sleep deprivation by diurnal variation of mood

Psychiatry Research ◽

10.1016/0165-1781(90)90077-i ◽

1990 ◽

Vol 32 (2) ◽

pp. 113-124 ◽

Cited By ~ 67

Author(s):

Els Reinink ◽

Netty Bouhuys ◽

Anna Wirz-Justice ◽

Rutger van den Hoofdakker

Keyword(s):

Sleep Deprivation ◽

Diurnal Variation ◽

Antidepressant Response ◽

Total Sleep Deprivation ◽

Diurnal Variation Of Mood

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The 24-Hour Variation of Mood Differs between Morning- and Evening-Type Individuals

Perceptual and Motor Skills ◽

10.2466/pms.1998.86.1.264 ◽

1998 ◽

Vol 86 (1) ◽

pp. 264-266 ◽

Cited By ~ 51

Author(s):

Gerard A. Kerkhof

Keyword(s):

Diurnal Variation ◽

Analysis Of Variance ◽

Time Of Day ◽

Temperature Curve ◽

Oral Temperature ◽

Healthy Individuals ◽

Diurnal Variation Of Mood ◽

Morning Type

This study investigated a 24-hour variation of subjective mood in 16 healthy Morning-type and 13 Evening-type subjects as defined by the time of day at which their oral temperature curve reached its maximum. The subjects were instructed to use a sleep-wake logbook, in which they kept daily records of the ratings of their mood and alertness for a period of two consecutive weeks. For mood as well as for alertness analysis of variance indicated significant interactions between Morning-and Evening-types and time of day. It is concluded that a pronounced diurnal variation of mood can be observed in healthy individuals, which differs between Morning-type and Evening-type subjects.

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