Effects of Two 15-min Naps on the Subjective Sleepiness, Fatigue and Heart Rate Variability of Night Shift Nurses
| Autor: | Yukiko Miyakoshi, Sanae Oriyama, Toshio Kobayashi |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Adult
Night shift work Sleepiness Time Factors Visual analogue scale Rest Health Toxicology and Mutagenesis Nursing Staff Hospital law.invention Young Adult Randomized controlled trial Heart Rate law Work Schedule Tolerance mental disorders Heart rate Humans Heart rate variability Wakefulness Fatigue Occupational Health Morning Nurse musculoskeletal neural and ocular physiology fungi Public Health Environmental and Occupational Health Nap Sympathetic nervous activity Anesthesia Bispectral index Two 15-min naps Original Article Female Sleep Psychology human activities psychological phenomena and processes |
| Zdroj: | Industrial Health |
| ISSN: | 1880-8026 0019-8366 |
| DOI: | 10.2486/indhealth.2013-0043 |
| Popis: | The purpose of this study was to examine the effects of two 15-min naps on nurses who work at night in a three-shift system. Of the 15 nurses who were included as study subjects on a night shift, eight took two short naps (the Nap condition), and seven worked without taking a nap (the No-nap condition) during the night shift. We measured sublingual temperature and the bispectral index (BIS), obtained heart rate and heart rate variability measures from an electrocardiogram (ECG), and evaluated sleepiness and fatigue levels every hour using the Visual Analog Scale (VAS). Both subjective sleepiness and fatigue increased between 4:00 and 5:00, with no significant differences observed between the two groups. However, the low- to high-frequency ratio (LF/HF) in the Nap condition group was found to be significantly lower than in the No-nap condition group. Furthermore, a sudden, brief increase in HF values was observed in the No-nap condition group in the morning. The results of this study suggest that taking two short naps may effectively reduce tension and prevent a brief increase in HF values by suppressing sympathetic nervous activity in the morning. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|