An observational study in Obesity, sponsored by University Hospital, Grenoble. Status unknown. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-10-23.
Sponsored by University Hospital, Grenoble · Observational
Confinement disrupts social habits, the absence of professional activity or teleworking creates the possibility for individuals to work and/or sleep at times that are most convenient for them. Investigators hypothesize that subjects with a history of obesity will tend, during confinement, to return to their spontaneous chronotype. The evolution of chronotypes between the pre-confinement period and during confinement will allow to measure the percentage of subjects who are not usually living according to their spontaneous chronotype, due to social constraints. Finally, we wish to retrospectively question the subjects on the impact of confinement on their eating habits, physical activity, mood, employment, and so on.
Sleep patterns, evaluated in hunter-gatherer populations, show that without artificial interference, sleep is of course concomitant with the decrease in luminosity, but is also regulated by the outside temperature. Light pollution from night lighting and artificially regulated temperature contribute to distancing us from these physiological signals. In addition, the leisure activities linked to the screens encourage a voluntary restriction of sleep manifested by a later bedtime, whereas social constraints always impose the time of getting up. Sleep debt accumulates during the week and compensates for non-working days inducing a social jet lag of small amplitude, but repeated each week. Subjects who spontaneously or habitually develop a late chronotype (i.e. a propensity to be a "late sleeper, late riser") are the most exposed to this social jetlag between days worked when the sleep debt accumulates and days off when the sleep debt compensates.
It has been widely demonstrated that a short sleep duration promotes weight gain. Subjects with a late chronotype associate a short sleep duration on days when they work and a significant social jetlag on days when they do not work. This late chronotype is associated with unfavourable eating behaviour and more emotional eating and constitutes a risk of developing metabolic diseases.
Confinement disrupts social habits: lack of work activity or teleworking creates the possibility for individuals to work and/or sleep at times that are most convenient for them. Investigators hypothesize that subjects with a history of obesity will have tended, during confinement, to return to their spontaneous chronotype. The evolution of chronotypes between the pre-confinement period and during confinement will allow to measure the percentage of subjects who are not usually living according to their spontaneous chronotype, due to social constraints. Finally, we wish to retrospectively question the subjects on the impact of confinement on their eating habits, physical activity, mood and employment.
University Hospital, Grenoble is the lead sponsor of 815 studies on the registry; 205 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Adult patients presenting with a medical history of obesity
Exclusion Criteria:
Patients included are subject who entered a structured program of care for their obesity, with or without bariatric surgery.
Procedure: Bariatric surgery
Some patients in the cohort are followed by a multidisciplinary team in preparation for bariatric surgery. Others have already undergone bariatric surgery and are being followed up postoperatively.
Change in sleep and meal schedules
Time frame: before (mid-March 2020) at the end (May 11, 2020) and after containment (September 2020)
Change in self-reported body weight
Time frame: before (mid-March 2020) at the end (May 11, 2020) and after containment (September 2020)
Change in obesity-related quality of life evaluated by EQVOD questionnaire
Time frame: before (mid-March 2020), at the end (May 11, 2020) and after confinement (September 2020).
Change in physical activity assessed by the short form of International Physical Activity Questionnaire (sf-IPAQ)
Time frame: before (mid-March 2020), at the end (May 11, 2020) and after confinement (September 2020).
Change in mood and anxiety assessed by the Hospital Anxiety and Depression Scale (HADS)
Time frame: before (mid-March 2020) at the end (May 11, 2020)
Change in working status
Time frame: before (mid-March 2020) at the end (May 11, 2020)
Change in food security status assessed by the Household Food Security Scale Measure (HFSSM)
Time frame: before (mid-March 2020), at the end (May 11, 2020) and after containment (September 2020).
Search for a correlation between evolution of the chronotype and evolution of the weight, IPAQS score, HADS score, etc.
Time frame: before (mid-March 2020), at the end (May 11, 2020) and after containment (September 2020).
No study locations are listed for this record.
Plan to share: Undecided
This study is status unknown, as verified in Oct 2020. You cannot join it, but the record below documents what was studied.
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University Hospital, Grenoble