Effect of a Short Nap During the Night Shift of Healthcare Workers on Endothelial Function

Effect of a Short Nap During the Night Shift of Healthcare Workers on Endothelial Function: NAP-WORK Randomized Controlled Study

Night shift work is well known to cause health disruption in short and long term. It has been reported that among healthcare workers, nurses slept less than 6 h/24h. Consequences of such short sleep duration has been associated to long term issues such as endothelial dysfunction associated with cardiovascular diseases, arterial hypertension and type 2 diabetes. Countermeasures such as nap at work has potential effects on reducing the prevalence of cardiovascular diseases. However, to our knowledge, no studies have objectively investigated the effects of napping on endothelial function in a longitudinal design. Therefore, this study aims to investigate the effect of a 30 minutes on-duty nap during night work for 12 weeks on caregivers endothelial dysfunction.

Inclusion Criteria:

• Being a paramedical caregiverr (nurse or care assistant) at Saint-Etienne University Hospital
• Be aAged between 18 and 65
• Working at least 80% of a full-time equivalent post
• Working 12-hour shifts (day/night) in continuous care services
• Being affiliated or entitled under a social security scheme
• Havinge received informed information about the study and have co-signed, with the investigator, a consent to participate in the study

Exclusion Criteria:

• Have made a tTrans meridian journey in the last month prior to the study
• Have a mMedically diagnosed sleep disorder such asof the hypersomnia or insomnia type
• Have a diagnosed and treated mental pathology
• Usually take a nap in the workplace in a quiet room
• Be pregnant or breastfeeding
• Have medically diagnosed neurovascular or neuromuscular pathologies