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KMID : 0385920220330020211
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Journal of the Korean Society of Emergency Medicine
2022 Volume.33 No. 2 p.211 ~ p.219
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Comparison of physical work intensity of emergency medicine (EM) residents and non-EM residents, measured on the smartwatch: a prospective study
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Lee Dong-Hyun
Kang Ji-Hun
Yu Jae-Kwang
Ji Jae-Gu
Lee Si-Won
Park Chul-Ho
Yoon Yoo-Sang
Kim Yang-Weon
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Abstract
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Objective: The purpose of this study was to compare the physical work intensity of emergency medicine (EM) and non- EM residents during a 24-hour work duty cycle using a smartwatch.
Methods: This study was conducted for a month from 7 May to 4 June 2021. A total of 27 residents submitted their consent to be recruited as subjects for the study. We distributed a smartwatch to each of the participants and measured their physical work intensity. Twenty non-EM residents wore a smartwatch for a week. Also, seven EM residents wore a watch during the time they were on 24-hour duty for the whole research period. After finishing their 24-hour duty, participants took off the smartwatch and stopped recording their physical activities. Sixty-five samples were matched for comparison between the non-EM and EM residents. Each of the samples comprised a pair of 24-hour records of EM and non-EM residents. The data were matched to ensure the same date and grade and thus control the variables.
Results: The results of this study showed that the maximum heart rate of the EM residents was 129.7±3.8 beats/min, which was higher than that of the non-EM residents. A comparison of the sleep hours during the 24-hour duty showed that the average sleep time of the EM residents was 156.9±84.8 minutes, which was significantly lower than that of the non-EM residents. However, calorie consumption, moving distance, and step count during the 24-hour duty cycle showed no significant difference between the EM and non-EM residents.
Conclusion: The maximum heart rate was higher among EM residents during their 24-hour work duty compared to the non-EM residents. In addition, the sleep time of the EM residents was significantly lower than that of the non-EM residents.
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KEYWORD
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Emergency medicine, Workload, Residency, Wearable electronic device
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