Six nights of sleep extension increases regional cerebral oxygenation without modifying cognitive performance at rest or following acute aerobic exercise

Clark, Cayla; Rivas, Eric; Gonzales, Joaquin U.

doi:10.1111/jsr.13582

Cited by 4 publications

(1 citation statement)

References 52 publications

(90 reference statements)

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“…32 Nonetheless, the literature is relatively sparse, 33 with multiple limitations, including limited focus on objective measures of health. However, recent studies of average sleepers conducted by Gonzales et al 34 and Clark et al 35 found no effects of 5 to 6 nights of sleep extension (from 8–10 hours) on multiple measures of cardiovascular health or cognitive function.…”

Section: Introductionmentioning

confidence: 95%

The Effects of Experimental Sleep Extension in Middle-to-Older-Aged Healthy Sleepers

Reynolds,

Seymour,

Iftikhar

et al. 2024

Sleep Sci

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Objectives To determine the feasibility for middle-aged and older adults to extend their time in bed by 2 h per night for 3 consecutive weeks. Other aims were to examine the effects of sleep extension on mood, cognitive performance, and cardiovascular health. Methods Ten healthy middle-aged to older adults (9 women; M = 65.20 ± 4.78 years) who reported regularly sleeping 6 to 8 h per night participated in a randomized controlled cross-over study: 3 weeks of both habitual sleep and extended sleep (1-week recovery between treatments). Participants were asked to spend 2 additional hours in bed per night during sleep extension. Cognitive (e.g., errors, response time), psychological (e.g., depression, anxiety, mood), and physiological measures (e.g., inflammation, glucose, triglycerides, blood pressure) were assessed. Results Compared with habitual sleep, time in bed increased 81.63 ± 33.11 min and total sleep time increased 66.33 ± 28.64 min during sleep extension; these variables did not significantly change during baseline or the habitual sleep treatment. No significant treatment differences were found in the cognitive, psychological, or physiological measures. Discussion Neither significant positive nor negative effects of sleep extension were found for any of the variables. In terms of feasibility, it was difficult for the participants to extend their time in bed and, subsequently, attain more sleep by the targeted amount. Sleep extension by a greater degree or longer period of times might be more likely to elicit positive or negative effects.

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Section: Introductionmentioning

confidence: 95%

The Effects of Experimental Sleep Extension in Middle-to-Older-Aged Healthy Sleepers

Reynolds,

Seymour,

Iftikhar

et al. 2024

Sleep Sci

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The association of previous night's sleep duration with cognitive function among older adults: a pooled analysis of three Finnish cohorts

Teräs,

Myllyntausta,

Salminen

et al. 2023

Eur J Ageing

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Study objectives Sleep duration has been shown to associate with cognitive function, but little is known about the short-term effect of sleep duration on the previous night. This study examines how usual sleep duration and previous night’s sleep duration are associated with cognitive function in older adults. Methods The study population consisted of 2949 adults aged 59–92 years (mean 72.6, SD 5.7) derived from three Finnish cohorts. Participants’ self-reported usual sleep duration was categorized into short (< 7 h, 19%), mid-range (7– < 9 h, 64%), and long (≥ 9 h, 17%). Self-reported sleep duration on the night prior to cognitive testing was categorized into shorter (59%), same (35%), and longer (5.9%) than usual sleep duration. Computerized Cambridge Neuropsychological Test Automated Battery (CANTAB®) was used to assess: (1) learning and memory, (2) working memory, (3) information processing, and (4) reaction time. Results Participants with self-reported long, but not short, usual sleep duration had poorer learning and memory (p = .004), information processing (p = .003), and reaction time (p = .006) when compared to those with mid-range sleep duration. Those who slept more than usually the night prior to cognitive testing had poorer information processing (p = .019) than those sleeping the same as usually, while sleeping less than usually was not associated with cognitive function. Conclusions This study suggests that while long sleep duration was associated with worse cognitive function, sleeping more than usually the night prior to cognitive testing was only associated with information processing, and sleeping less than usually is not associated with cognitive function.

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Individual sleep need is flexible and dynamically related to cognitive function

Fjell,

Walhovd

2024

Nat Hum Behav

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Six nights of sleep extension increases regional cerebral oxygenation without modifying cognitive performance at rest or following acute aerobic exercise

Cited by 4 publications

References 52 publications

The Effects of Experimental Sleep Extension in Middle-to-Older-Aged Healthy Sleepers

The Effects of Experimental Sleep Extension in Middle-to-Older-Aged Healthy Sleepers

The association of previous night's sleep duration with cognitive function among older adults: a pooled analysis of three Finnish cohorts

Individual sleep need is flexible and dynamically related to cognitive function

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