Efekti produženog spavanja na pospanost i psihobiološke parametre posle jedne radne nedelje blage restrikcije spavanja
The effects of recovery sleep on sleepiness and psychobiological parameters after one work week of mild sleep restriction
Докторанд
Pejović-Nikolić, SlobodankaМентор
Jašović-Gašić, MiroslavaЧланови комисије
Vgontzas, Alexandros N.Kostić, Vladimir S.
Lečić-Toševski, Dušica
Vukčević, Miodrag
Метаподаци
Приказ свих података о дисертацијиСажетак
Uvod. Jedna nedelja blage restrikcije spavanja ima negativne efekte na
pospanost, performansu i proinflamatorne citokine i dovodi do povecanja
energetskog unosa. Mnogi pojedinci pokušavaju da prevaziu navedene štetne
efekte spavajuci duže preko vikenda. Meutim, efekti produženog spavanja posle
blage restrikcije spavanja na sekreciju hormona stresa i hormona koji regulišu
apetit, kao i na stepen gladi i energetski unos, nisu bili predmet dosadašnjih
studija.
Ciljevi istraživanja. Proceniti efekte produženog (“vikend”) spavanja posle
“jedne radne nedelje” blage restrikcije spavanja na pospanost/budnost,
inflamaciju i hormon stresa, kortizol, kao i na energetski unos, stepen gladi, i na
dvadesetcetvorocasovnu sekreciju cirkulišuceg leptina.
Materijal i metode. Trideset zdravih, mladih muškaraca i žena (prosecne godine
starosti ± SD, 24.7 ±3.5, prosecna vrednost ITM ± SD, 23.6 ±2.4 kg/m2)
ucestvovali su u eksperimentalnoj studiji laboratorije za istraživanje spavanja.
Studija je trajala 13... dana [4 bazalne noci (8h/noc), posle kojih su usledile 6 noci
restrikcije spavanja (6h/noc) i 3 noci produženog spavanja (10h/noc)].
Dvadesetcetvorocasovni profili cirkulišuceg interleukina-6 (IL-6), kortizola i
leptina; objektivne i subjektivne dnevne pospanosti (Test višestrukog
uspavljivanja i Stendfordska skala pospanosti), neurobihejvioralne performanse
(Test psihomotorne vigilnosti), raspoloženja (Profili stanja raspoloženja),
energetski unos i stepen gladi evaluirani su cetvrtog (bazalni period), desetog
(posle jedne nedelje restrikcije spavanja) i trineastog dana (posle 2 noci
produženog spavanja).
Rezultati. Dvadesetcetvorocasovni serijski nivoi IL-6 u plazmi su znacajno
porasli u toku restrikcije spavanja, dok su se posle produženog spavanja vratili
na bazalne nivoe. Dvadesetcetvorocasovni serijski nivoi kortizola ostali su
nepromenjeni tokom restrikcije spavanja u poreenju sa bazalnim nivoima, ali su
bili znacajno niži posle produženog spavanja...
Introduction. One workweek of mild sleep restriction adversely impacts
sleepiness, performance and pro-inflammatory cytokines. Many individuals try to
overcome these adverse effects by extending their sleep on weekends.
Furthermore, energy intake increases after sleep restriction, however, the effects
of extended recovery sleep following prolonged sleep curtailment on hunger,
food consumption, and appetite- and stress-regulating hormones have not been
studied.
Aims. To assess the effects of extended “weekend” recovery sleep after “one
workweek” of mild sleep restriction on sleepiness/alertness, inflammation and
stress hormones, as well as on energy intake, hunger, and 24-hour circulating
leptin.
Material and methods. Thirty healthy, young men and women (mean age ±SD,
24.7 ± 3.5; mean body mass index ±SD, 23.6 ± 2.4 kg/m2) participated in a sleep
laboratory experiment of 13 nights [4 baseline nights (8h/night), followed by 6
sleep restriction nights (6h/night) and 3 recovery nights (10h... /night)]. Twentyfour-
hour profiles of circulating interleukin-6 (IL-6), cortisol, and leptin; objective
and subjective daytime sleepiness (Multiple Sleep Latency Test and Stanford
Sleepiness Scale), performance (Psychomotor Vigilance Task), mood (Profile of
Mood States), energy intake, and hunger were assessed on days 4 (baseline),
10 (after one week of sleep restriction) and 13 (after 2 nights of recovery sleep).
Results. Serial 24-h IL-6 plasma levels increased significantly during sleep
restriction and returned to baseline after recovery sleep. Serial 24-h cortisol
levels during restriction did not change compared to baseline, but after recovery
they were significantly lower. Subjective and objective sleepiness increased
significantly after restriction and returned to baseline after recovery. In contrast,
performance deteriorated significantly after restriction and did not improve after
recovery. Furthermore, feelings of hunger did not change during either sleep
restriction or recovery, while, energy intake increased significantly during sleep
restriction and did not return to baseline after recovery...