- ICH GCP
- Rejestr badań klinicznych w USA
- Badanie kliniczne NCT00804804
Aging, Sleep, Cognitive Process (SOMVIE)
Aging,Sleep and Cognitive Process
Przegląd badań
Status
Warunki
Interwencja / Leczenie
Szczegółowy opis
Social evolutions (nocturnal activity, shift work) have consequently reduced average sleep duration average. In addition, aging leads to a physiological reduction of nocturnal sleep duration.
Many studies have shown that extended wakefulness impairs nocturnal performances measured with a simple reaction time test (SRTT) and that this decrement is also age-related. In deed, young subjects (20-30 years) are more affected than old subjects (50-60 years) during an extended wakefulness period.
The results obtained in confinement constant conditions, associated to a high or low sleep pressure, show that this difference observed between young and old subjects should be essentially related to a reduced circadian regulation (ex : reduced melatonin secretion) with age rather than to a reduced sleep pressure (homeostatic regulation) as previously suggested. However, studies on confinement have shown that sleep pressure (identified during the sleep period with the EEG delta band) could be reduced with aging specifically on the anterior brain regions (frontal regions).
It is well-known that executive performances (related to frontal lobes functioning) are affected by extended wakefulness, but respective effects of age, circadian system and sleep pressure in this decrement remain unknown.
The aim of this study is to determine the evolution of the executive functions during a 40-hour extended wakefulness period ("high sleep pressure protocol") or during a multiple nap protocol ("low sleep pressure protocol") according to the subjects' age, in constant experimental conditions of confinement.
It's a repeated measurements study with protocol (sleep deprivation and multiple naps) and time of day as within factors and age group (young versus older subjects) as between factor
Typ studiów
Zapisy (Oczekiwany)
Faza
- Nie dotyczy
Kontakty i lokalizacje
Lokalizacje studiów
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Bordeaux, Francja, 33076
- Genpphass
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Toulouse, Francja, 31405
- Medes-Imps
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Toulouse, Francja, 31300
- UH Purpan
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Kryteria uczestnictwa
Kryteria kwalifikacji
Wiek uprawniający do nauki
Akceptuje zdrowych ochotników
Płeć kwalifikująca się do nauki
Opis
Inclusion Criteria:
- excessive daytime sleepiness (Epworth Sleepiness Scale score > 9),
- sleep complaint such as sleep apnea or insomnia (Basic Nordic Sleep Questionnaire, items score < 4 except questions 3, 4 and 15a for aged volunteers),
- not intermediate in terms of morningness and eveningness according to the Horne-Ostberg questionnaire for young volunteers
- absence of psychopathology evidenced during psychologist interview or on the Symptom Check List (SCL-90R score>59)
- sleep efficiency evidenced by actimetry (>85%) during 7 days
- absence of apnea/hypopnea syndrome (RDI<15)
- absence of periodic movement disorder (MPS<15)
- regular sleep schedule during 3 days before study participation
- affiliated to the french health care system
Exclusion Criteria:
- volunteers with sleep disorders or organic disorders affecting sleep,
- poor sleep hygiene or abnormal usual sleep patterns,
- night workers or shift-workers,
- substance abusers (caffeine, drug, or alcohol).
Plan studiów
Jak projektuje się badanie?
Szczegóły projektu
- Główny cel: Podstawowa nauka
- Przydział: Randomizowane
- Model interwencyjny: Przydział równoległy
- Maskowanie: Brak (otwarta etykieta)
Broń i interwencje
Grupa uczestników / Arm |
Interwencja / Leczenie |
---|---|
Eksperymentalny: Y1
young volunteers (20-30 years), morningness chronotype
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To determine the evolution of the executive functions during a 40-hour extended wakefulness period or during a 40-hour multiple nap protocol in constant experimental conditions of confinement
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Eksperymentalny: Y2
young volunteers (20-30 years), eveningness chronotype
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To determine the evolution of the executive functions during a 40-hour extended wakefulness period or during a 40-hour multiple nap protocol in constant experimental conditions of confinement
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Eksperymentalny: O1
Aged volunteers (65-75 years), morningness chronotype
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To determine the evolution of the executive functions during a 40-hour extended wakefulness period or during a 40-hour multiple nap protocol in constant experimental conditions of confinement
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Eksperymentalny: O 2
aged volunteers (65-75 years), eveningness chronotype
|
To determine the evolution of the executive functions during a 40-hour extended wakefulness period or during a 40-hour multiple nap protocol in constant experimental conditions of confinement
|
Co mierzy badanie?
Podstawowe miary wyniku
Miara wyniku |
Ramy czasowe |
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Executive functions will be evaluated by a Go/NoGo task and a Stop Signal. Performances will be measured with a visual simple reaction time task
Ramy czasowe: every 3h45
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every 3h45
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Miary wyników drugorzędnych
Miara wyniku |
Ramy czasowe |
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Nocturnal sleep quality before and after 2 constant conditions measured by PSG Sleep pressure quantified by Karolinska test and EEG delta band Subjective sleepiness and fatigue evaluated by Karolinska sleepiness scale and visual analogue scale
Ramy czasowe: every 3h45
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every 3h45
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Współpracownicy i badacze
Sponsor
Śledczy
- Główny śledczy: Pierre PHILIP, MD,PHD, University Hospital Bordeaux France
Daty zapisu na studia
Główne daty studiów
Rozpoczęcie studiów
Zakończenie podstawowe (Rzeczywisty)
Ukończenie studiów (Rzeczywisty)
Daty rejestracji na studia
Pierwszy przesłany
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy wysłany (Oszacować)
Aktualizacje rekordów badań
Ostatnia wysłana aktualizacja (Oszacować)
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia weryfikacja
Więcej informacji
Terminy związane z tym badaniem
Słowa kluczowe
Inne numery identyfikacyjne badania
- CHUBX 2008/17
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