Effects of Sleep, Physical Activity, and Shift Work on Daily Mood: a Prospective Mobile Monitoring Study of Medical Interns

Background Although short sleep, shift work, and physical inactivity are endemic to residency, a lack of objective, real-time information has limited our understanding of how these problems impact physician mental health. Objective To understand how the residency experience affects sleep, physical a...

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Bibliographic Details
Published in:Journal of general internal medicine : JGIM 2018-06, Vol.33 (6), p.914-920
Main Authors: Kalmbach, David A., Fang, Yu, Arnedt, J. Todd, Cochran, Amy L., Deldin, Patricia J., Kaplin, Adam I., Sen, Srijan
Format: Article
Language:English
Subjects:
Circadian rhythms
Correlation analysis
Exercise
Internal Medicine
Internships
Medical residencies
Medicine
Medicine & Public Health
Mental depression
Mental disorders
Mental health
Mood
Occupational health
Original Research
Physical activity
Physicians
Schedules
Shift work
Sleep
Working conditions
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Summary:Background Although short sleep, shift work, and physical inactivity are endemic to residency, a lack of objective, real-time information has limited our understanding of how these problems impact physician mental health. Objective To understand how the residency experience affects sleep, physical activity, and mood, and to understand the directional relationships among these variables. Design A prospective longitudinal study. Subjects Thirty-three first-year residents (interns) provided data from 2 months pre-internship through the first 6 months of internship. Main Measures Objective real-time assessment of daily sleep and physical activity was assessed through accelerometry-based wearable devices. Mood scaled from 1 to 10 was recorded daily using SMS technology. Average compliance rates prior to internship for mood, sleep, and physical activity were 77.4, 80.2, and 93.7%, and were 78.8, 53.0, and 79.9% during internship. Key Results After beginning residency, interns lost an average of 2 h and 48 min of sleep per week ( t  = − 3.04, p  
ISSN:0884-8734
1525-1497
DOI:10.1007/s11606-018-4373-2