Circadian Rhythms Characteristics of Nurses Providing Direct Patient
Care: An Observational Study

Circadian Rhythms Characteristics of Nurses Providing Direct Patient
Care: An Observational Study

Activity levels
Circadian rhythms
Cosinor analysis
Nursing
Shiftwork

In today’s modern world, longer working hours, shift work, and working at night have
become major causes of the disruption of our natural circadian rhythms. This study aimed to investigate
the effects of the type of shift work (rotating vs. fixed day), duty period (on-duty vs. off-duty), and
working period within each shift (nighttime vs. daytime) on the circadian rhythm characteristics of
nurses who provide direct patient care.
Methods: This cross-sectional study used a purposive sampling method. Cosinor analysis was applied to
analyze the actigraphy data of nurses providing direct patient care for seven consecutive days. The linear
mixed effects model was then used to determine any variances between shift type, duty period, and
working period within each shift for the nurses.
Results: The mesor value did not differ according to nurses’ shift type, duty period, and working period
within each shift. The amplitude was statistically higher in on-duty nurses and in daytime working
hours. The acrophase was significantly delayed in nighttime working hours. As well as nurses in rotating
shift had experience.
Conclusion: Our findings revealed that the peak activity of nurses occurs significantly later at night while
working and nurses working during nighttime hours may have a weaker or less distinct circadian rhythm.
Thus, this study suggests that limits be placed on the number of rotating nighttime shifts for nurses.

Ilknur Dolu 1,*, Serap Açıkgöz 2
, Ali Rıza Demirbas¸ 3
, Erdem Karabulut 4

https://pdf.sciencedirectassets.com/287282/1-s2.0-S2093791124X00025/1-s2.0-S2093791123000847/main.pdf?X-Amz-Security-Token=IQoJb3JpZ2luX2VjED4aCXVzLWVhc3QtMSJIMEYCIQCW0EnQEfZmU%2BgvBbjEIjWhFzfkAji4WBcgT4Yv48pzyAIhALpX1p2wrJJkeWv9tN42gSc%2FtN2ZE2hNb67Z8FxbgSwhKrIFCAcQBRoMMDU5MDAzNTQ2ODY1IgwYGw8lYoQnU1D1EqUqjwXm5DDL1ZW7UFONZnKsga%2BYJG7GcJ48jajj9MYB5PBU2F2lV2pyPlVMYTuCdoYTWpffV8GkGSBiuG2%2Ffvf1MYF6zwF15SHZqeNO37y3dKnIOCFaZkuqPDXz0RbyS8Qcr0eZzNd%2BEtljOKN6iC9zXU6IcCB8APwL3csd35zFKl4kOe6YLk7ryzBB5Z9OAI4ZWafexHWKPONZfCRm%2BA2q9N6khBwRkkjjZksz1bOtGLJjWdwf3mRHGz5NOZF3%2B4%2BFLG2re7sUmZyH0hdvyIm0jSCGiRN4z1M4CEi1QSLZ4whAcnMkoUodDsFDuNr6OceCvW8TMP8mB1rbZH77HZDbYerqPQlW8hX%2BBJTL8%2FckJWPH97VugjduxzUYJSqMnYDe7yb70PoPhVEbosEzqyNpOeH%2B5oVSWVEOiSgYshrS0FfPdgmxG%2FqsjmFHbTc9z8DLV18%2BgtQhq3mps11tS4dT9j2CPyFCG8NCz8pzkruHzCy5vaVkFSNZFCP7wCIzoH069YJ8W1kLPxOI3h7FR6S40orYbI6LdCuAYqur0Uw%2Ft11o5Sn0R6Mk29JHUPtXfphbDxJVlnjZ1ss64pSBOBtRo6yeHJj4fNp77R%2BXnjz8psxHRGPbpOMXyaZWTRE7rRW%2Fb8dTKfoOWXVs6yxbGAIF5CPBtC0ejglx%2Fg6L8MMiEDEul9L3ZGiacfXlfL0WaM2b%2FW2whx2Noy9MbyT2BmaFeBy7tuCYtn2TQXyBZA2oXuKsSOnLtwFKQVRzd6RlS%2B4tKuFHe%2FVdKCkYEefq2OZofBKbtikagUjeor%2B3RjZdsIlmn4nKDjSN0CqthvDPer1TZvQ2%2FT9V%2BT2yFG64gMzLBsZRoe%2FO0%2Fl07U3PQ8MdPYBlMMic%2BswGOrAB1aeJI4%2B%2Fo8TrxlJaAyqvxOnKYyqtQwXow0HBM26LlmzAg8ncnT1oIKFAVNQlIReTxMXIUPHl4%2BaKpxQVVBtzyE4qJ9I1menZBbRHClRUk6%2FNRuF1VhadowD%2F1cI7BkZQW%2BCvKYqiHDPcfT1nhydz%2Bm2hWbVz2UKxp2rvGIAPXXb9J1JvM%2FqCFXK15zh3zyMxCxrLF8808jEaBuWxZedlX72ihK%2F8zQCA%2B8LvDniTHLE%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20260225T061838Z&X-Amz-SignedHeaders=host&X-Amz-Expires=300&X-Amz-Credential=ASIAQ3PHCVTYSLIDMSUA%2F20260225%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=46d7c7242a8ae767d21e50579e60f8621118530ce58aacc807ba45cd4b33fde4&hash=e272dddbbd09ff483c09b44914b25de97065e6594bb5204f14e89b37aa3f20d4&host=68042c943591013ac2b2430a89b270f6af2c76d8dfd086a07176afe7c76c2c61&pii=S2093791123000847&tid=spdf-4cebc000-5320-4c20-8e1b-f5531b58d482&sid=323f66de8e4980408c0be7b-7fe7e7fe55f2gxrqb&type=client&tsoh=d3d3LnNjaWVuY2VkaXJlY3QuY29t&rh=d3d3LnNjaWVuY2VkaXJlY3QuY29t&ua=0b015e065457505152&rr=9d3516239853ea76&cc=id

1Department of Nursing, Faculty of Health Science, 74100 Bartın University, Bartın, Turkey 2Department of Nursing, Faculty of Health Science, Çankırı Karatekin University, Çankırı, Turkey 3Governors State University, Department of Health Administration and Informatics, United States
4 Hacettepe University, Faculty of Medicine, Basic Medical Sciences, Department of Biostatistics, Turkey

14 December 2023

FAJAR BAGUS W

PDF

ENGLISH

TEXT