Sleep Characteristics and Risk Factors of Korean Esports Athletes: An Exploratory Study

다국어 초록 (Multilingual Abstract)

Background and ObjectiveaaAlthough sleep is a potentially important determinant of performance in esports, there have been no published data on the sleep behavior of professional esports athletes. The aim of this study is to investigate sleep aspects and sleep risk factors in esports athletes.
MethodsaaThirty-four esports athletes were compared with 21 nonathletes from the general population to assess their sleep patterns and mood. Study 1 is a quantitative study with a 2-week observation period of sleep that was performed after evaluating insomnia severity, daytime sleepiness, sleep knowledge, and mood state. During the sleep observation period, participants recorded sleep diaries. In study 2, qualitative research was conducted with in-depth interviews from 6 participants.
ResultsaaThe esports athlete group reported significantly delayed sleep phase compared to the nonathlete group (d = 2.10 hours, p < 0.001). The esports athlete group reported significantly lower sleep quality and scores for feeling refreshed upon awakening, higher depression scores and significantly higher proportion of individuals with clinical symptoms of depression compared to the nonathlete group (ps < 0.01). In study 2, six themes emerged from the interviews: sleep risk factors, sleep protective factors, lifestyle, stressors, organizational management, and demands for sleep/ psychological intervention.
ConclusionsaaThe professional esports athletes showed more depressed mood and more delayed sleep phase compared to the non-athletes. A wide range of interventions tailored to esports athletes should be developed and implemented on both individual and organizational levels.

참고문헌 (Reference)

1 김원순, "종합병원 기혼여성 교대근무 간호사의 수면장애 경험" 한국재활심리학회 25 (25): 775-788, 2018

2 서미, "생활스트레스, 스트레스 대처방식, 사회적 지지가 대학생의 정신건강에 미치는 영향" 한국상담학회 7 (7): 271-288, 2006

3 Bastien CH, "Validation of the Insomnia Severity Index as an outcome measure for insomnia research" 2 : 297-307, 2001

4 Giorgi A, "The theory, practice, and evaluation of the phenomenological method as a qualitative research procedure" 28 : 235-260, 1997

5 Goldstein AN, "The role of sleep in emotional brain function" 10 : 679-708, 2014

6 Beedie CJ, "The profile of mood states and athletic performance : two meta-analyses" 12 : 49-68, 2000

7 Drake C, "The pediatric daytime sleepiness scale(PDSS) : sleep habits and school outcomes in middle-school children" 26 : 455-458, 2003

8 Zohar D, "The effects of sleep loss on medical residents’ emotional reactions to work events : a cognitive-energy model" 28 : 47-54, 2005

9 Thomas CJ, "The effects of energy drink consumption on cognitive and physical performance in elite league of legends players" 7 : 196-, 2019

10 Morin CM, "The Insomnia Severity Index : psychometric indicators to detect insomnia cases and evaluate treatment response" 34 : 601-608, 2011

11 Radloff LS, "The CES-D scale : a self-report depression scale for research in the general population" 1 : 385-401, 1977

12 Cohen S, "Stress, social support, and the buffering hypothesis" 98 : 310-357, 1985

13 Jacquinet-Salord MC, "Sleeping tablet consumption, self reported quality of sleep, and working conditions. Group of Occupational Physicians of APSAT" 47 : 64-68, 1993

14 Harris K, "Sleep-related attentional bias in insomnia : a state-of-the-science review" 42 : 16-27, 2015

15 Kuppermann M, "Sleep problems and their correlates in a working population" 10 : 25-32, 1995

16 Minkel JD, "Sleep deprivation and stressors : evidence for elevated negative affect in response to mild stressors when sleep deprived" 12 : 1015-1020, 2012

17 Bonnar D, "Sleep and performance in Eathletes: for the win!" 5 : 647-650, 2019

18 Frese M, "Shiftwork and the length and quality of sleep" 26 : 561-566, 1984

19 Daniel Bonnar, "Risk Factors and Sleep Intervention Considerations in Esports: A Review and Practical Guide" 대한수면학회 10 (10): 59-66, 2019

20 Creswell JW, "Research design: qualitative, quantitative, and mixed methods approaches" SAGE Publications, Inc 2017

21 Buysse DJ, "Recommendations for a standard research assessment of insomnia" 29 : 1155-1173, 2006

22 Gradisar M, "Recent worldwide sleep patterns and problems during adolescence : a review and meta-analysis of age, region, and sleep" 12 : 110-118, 2011

23 Holloway I, "Qualitative research in nursing and healthcare" John Wiley & Sons, Ltd 2016

24 Storfer-Isser A, "Psychometric properties of the Adolescent Sleep Hygiene Scale" 22 : 707-716, 2013

25 Bartel KA, "Protective and risk factors for adolescent sleep : a meta-analytic review" 21 : 72-85, 2015

26 Meyer C, "Proposal of cutoff points for pediatric daytime sleepiness scale to identify excessive daytime sleepiness" 35 : 303-311, 2018

27 Paunio T, "Poor sleep predicts symptoms of depression and disability retirement due to depression" 172 : 381-389, 2015

28 Wallace DD, "Multilevel analysis exploring the links between stress, depression, and sleep problems among two-year college students" 65 : 187-196, 2017

29 Johnson RB, "Mixed methods research : a research paradigm whose time has come" 33 : 14-26, 2004

30 Nasermoaddeli A, "Job strain and sleep quality in Japanese civil servants with special reference to sense of coherence" 44 : 337-342, 2002

31 King N, "Interviews in qualitative research" SAGE Publications, Inc 142-174, 2010

32 Tonon AC, "How do stress, sleep quality, and chronotype associate with clinically significant depressive symptoms? A study of young male military recruits in compulsory service" 42 : 54-62, 2020

33 Kleinert J, "Group dynamics in sports : an overview and recommendations on diagnostic and intervention" 26 : 412-434, 2012

34 Newzoo, "Global esports market report 2020"

35 Bonnar D, "Evaluation of novel school-based interventions for adolescent sleep problems : does parental involvement and bright light improve outcomes" 1 : 66-74, 2015

36 Hassan A., "Esports players are burning out in their 20s"

37 Pilcher JJ, "Effects of sleep deprivation on performance : a meta-analysis" 19 : 318-326, 1996

38 Taffinder NJ, "Effect of sleep deprivation on surgeons’ dexterity on laparoscopy simulator" 352 : 1191-, 1998

39 Linton SJ, "Does work stress predict insomnia? A prospective study" 9 : 127-136, 2004

40 Rudolf K, "Demographics and health behavior of video game and eSports players in Germany : the eSports study 2019" 17 : 1870-, 2020

41 Dinges DF, "Cumulative sleepiness, mood disturbance, and psychomotor vigilance performance decrements during a week of sleep restricted to 4-5 hours per night" 20 : 267-277, 1997

42 Richardson C, "Cognitive"insomnia"processes in delayed sleep-wake phase disorder : do they exist and are they responsive to chronobiological treatment" 87 : 16-32, 2019

43 Charbonneau D, "Antecedents and outcomes of unit cohesion and affective commitment to the Army" 30 : 43-53, 2018

44 Himmelstein D, "An exploration of mental skills among competitive league of legend players" 9 : 1-21, 2017

45 Rottapel RE, "Adapting sleep hygiene for community interventions : a qualitative investigation of sleep hygiene behaviors among racially/ethnically diverse, low-income adults" 6 : 205-213, 2020

46 Kim CW, "A study on the pro-gamer’s daily life and perception of e-sports" 3 : 27-46, 2006

47 Spadola CE, "A sleep hygiene and yoga intervention conducted in affordable housing communities : pilot study results and lessons for a future trial" 39 : 101121-, 2020

48 Caddick ZA, "A review of the environmental parameters necessary for an optimal sleep environment" 132 : 11-20, 2018

49 Harvey AG, "A cognitive model of insomnia" 40 : 869-893, 2002