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J Korean Soc Emerg Med > Volume 33(2); 2022 > Article
Journal of The Korean Society of Emergency Medicine 2022;33(2): 211-219.
Smartwatch를 이용한 응급의학과 전공의와 비응급의학과 전공의의 24시간 근무 시 신체적(physical) 업무강도 비교: 전향적 연구
이동현 , 강지훈 , 유재광 , 지재구 , 이시원 , 박철호 , 윤유상 , 김양원
인제대학교 의과대학 응급의학교실
Comparison of physical work intensity of emergency medicine (EM) residents and non-EM residents, measured on the smartwatch: a prospective study
Dong Hyun Lee , Ji Hun Kang , Jae Kwang Yu , Jae Gu Ji , Si Won Lee , Chul Ho Park , Yoo Sang Yoon , Yang Weon Kim
Department of Emergency Medicine, Inje University College of Medicine, Busan, Korea
Correspondence  Ji Hun Kang ,Tel: 051-890-6120, Fax: 051-891-1465, Email: mona@hanmail.net,
Received: June 29, 2021; Revised: August 26, 2021   Accepted: September 4, 2021.  Published online: April 30, 2022.
ABSTRACT
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.
Method:
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.
Key words: Emergency medicine; Workload, Residency; Wearable electronic device
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