Physical Activity, Energy Expenditure, Nutritional Habits, Quality of Sleep and Stress Levels in Shift-Working Health Care Personnel

• Published in: PloS one Vol. 12; no. 1; p. e0169983
• Main Authors: Roskoden, Frederick Charles, Krüger, Janine, Vogt, Lena Johanna, Gärtner, Simone, Hannich, Hans Joachim, Steveling, Antje, Lerch, Markus M, Aghdassi, Ali A
• Format: Journal Article
• Language: English
• Published: United States Public Library of Science 12-01-2017; Public Library of Science (PLoS)
• Subjects: Accelerometers; Accelerometry; Adult; Biology and Life Sciences; Carbohydrates; Cardiovascular disease; Cohort Studies; Confidence intervals; Disease susceptibility; Energy; Energy expenditure; Energy measurement; Energy Metabolism; Exercise; Expenditures; Female; Habits; Health aspects; Health care; Health Personnel - psychology; Health Personnel - statistics & numerical data; Humans; Male; Medical personnel; Medical research; Medicine; Medicine and Health Sciences; Melatonin; Metabolic syndrome; Nurses; Nursing; Nutrient deficiency; Nutrition; Nutritional Status; Obesity; Occupational health; People and Places; Personnel; Personnel Staffing and Scheduling; Physical activity; Prospective Studies; Psychological aspects; Public health; Quality assessment; Quality of life; Shift work; Sleep; Sleep - physiology; Stress; Stress, Psychological; Stresses; Studies; Surveys and Questionnaires; Work Schedule Tolerance; Workers; Working conditions; Working hours
• DOI: 10.1371/journal.pone.0169983
• EISSN: 1932-6203

Among health care personnel working regular hours or rotating shifts can affect parameters of general health and nutrition. We have investigated physical activity, sleep quality, metabolic activity and stress levels in health care workers from both groups.
We prospectively recruited 46 volunteer participants from the workforce of a University Medical Department of which 23 worked in rotating shifts (all nursing) and 21 non-shift regular hours (10 nursing, 13 clerical staff). All were investigated over 7 days by multisensory accelerometer (SenseWear Bodymedia® armband) and kept a detailed food diary. Physical activity and resting energy expenditure (REE) were measured in metabolic equivalents of task (METs). Quality of sleep was assessed as Pittsburgh Sleeping Quality Index and stress load using the Trier Inventory for Chronic Stress questionnaire (TICS).
No significant differences were found for overall physical activity, steps per minute, time of exceeding the 3 METs level or sleep quality. A significant difference for physical activity during working hours was found between shift-workers vs. non-shift-workers (p<0.01) and for shift-working nurses (median = 2.1 METs SE = 0.1) vs. non-shift-working clerical personnel (median = 1.5 METs SE = 0.07, p<0.05). Non-shift-working nurses had a significantly lower REE than the other groups (p<0.05). The proportion of fat in the diet was significantly higher (p<0.05) in the office worker group (median = 42% SE = 1.2) whereas shift-working nurses consumed significantly more carbohydrates (median = 46% SE = 1.4) than clerical staff (median = 41% SE = 1.7). Stress assessment by TICS confirmed a significantly higher level of social overload in the shift working group (p<0.05).
In this prospective cohort study shift-working had no influence on overall physical activity. Lower physical activity during working hours appears to be compensated for during off-hours. Differences in nutritional habits and stress load warrant larger scale trials to determine the effect on implicit health-associated conditions.