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Kawasaki Y, Kasai T, Sakurama Y, Sekiguchi A, Kitamura E, Midorikawa I, Shiroshita N, Kawana F, Ogasawara E, Kitade M, Koikawa N, Matsuda T. Evaluation of Sleep Parameters and Sleep Staging (Slow Wave Sleep) in Athletes by Fitbit Alta HR, a Consumer Sleep Tracking Device. Nat Sci Sleep 2022; 14:819-827. [PMID: 35502231 PMCID: PMC9056106 DOI: 10.2147/nss.s351274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/25/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose Sleep is an essential factor for athletes, and it is important to intervene in sleep to manage it. We need a device that can evaluate sleep easily and constantly. Consumer wearable devices can be useful tools for athletes. In order to use consumer wearable devices in clinical research, it is essential to conduct a validation study. Thus, we conducted a validation study to assess the Fitbit Alta HRTM (FBA)- a consumer wearable device with an accelerometer and a heart rate monitor to detect sleep stages and quality against electroencephalographic (EEG) studies in athletes. Patients and Methods Forty college athletes participated in the study. EEG was applied to participants simultaneously while wearing FBA. Results Regarding sleep parameters, there was a strong correlation between the total sleep time (TST)-EEG and the TST-Fitbit (r = 0.83; p < 0.001). Regarding the sleep stages, there was a modest correlation between the N3 sleep-EEG and the N3 sleep-Fitbit (r = 0.68; p < 0.001). In addition, there was a strong correlation between the percentage of N3 sleep in between sleep onset and initial rapid eye movement sleep-EEG and those on Fitbit (r = 0.73; p < 0.001). Conclusion These results demonstrate that FBA facilitates sleep monitoring and exhibits acceptable agreement with EEG. Therefore, FBA is a useful tool in athletes' sleep management.
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Affiliation(s)
- Yu Kawasaki
- Department of Obstetrics and Gynecology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takatoshi Kasai
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Cardiovascular Respiratory Sleep Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Cardiovascular Management and Remote Monitoring, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Sleep and Sleep-Disordered Breathing Center, Juntendo University Hospital, Tokyo, Japan
| | - Yuko Sakurama
- Japanese Center for Research on Women in Sport, Juntendo University, Tokyo, Japan
| | - Akiko Sekiguchi
- Japanese Center for Research on Women in Sport, Juntendo University, Tokyo, Japan
| | - Eri Kitamura
- Department of Obstetrics and Gynecology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | | | - Nanako Shiroshita
- Department of Cardiovascular Management and Remote Monitoring, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Fusae Kawana
- Cardiovascular Respiratory Sleep Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Etsuko Ogasawara
- Japanese Center for Research on Women in Sport, Juntendo University, Tokyo, Japan
- School of Health and Sports Science, Juntendo University, Chiba, Japan
| | - Mari Kitade
- Department of Obstetrics and Gynecology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Japanese Center for Research on Women in Sport, Juntendo University, Tokyo, Japan
| | - Natsue Koikawa
- Japanese Center for Research on Women in Sport, Juntendo University, Tokyo, Japan
- School of Health and Sports Science, Juntendo University, Chiba, Japan
| | - Takao Matsuda
- Department of Gynecology, National Hospital Organization Nishi-Beppu National Hospital, Oita, Japan
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Kitamura E, Kawasaki Y, Kasai T, Midorikawa I, Shiroshita N, Kawana F, Ogasawara E, Kitade M, Itakura A, Koikawa N, Matsuda T. The relationship between body composition and sleep architecture in athletes. Sleep Med 2021; 87:92-96. [PMID: 34547648 DOI: 10.1016/j.sleep.2021.08.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/11/2021] [Accepted: 08/27/2021] [Indexed: 11/25/2022]
Abstract
Sleep is essential for athletes to recover physical fitness. It has been suggested that sleep is affected by muscle volume. Compared to female athletes, male athletes with greater muscle volume may have inferior objective sleep quality. This study aimed to assess the relationship between body composition and objective sleep parameters in male and female athletes. The body composition of 17 male and 19 female collegiate athletes were measured, and they underwent overnight home sleep monitoring. Compared with female athletes, male athletes had more muscle mass and less fat mass. Moreover, male athletes had lower sleep efficiency, longer sleep onset latency, higher arousal index, less rapid eye movement (REM) sleep, and lower percentage of slow-wave (N3) sleep in the initial non-REM sleep. Furthermore, the percentage of muscle mass was inversely related, whereas fat mass or percentage of fat mass was directly related to the percentage of N3 sleep in the initial non-REM sleep. Overall, there were no significant association between sex and sleep parameters. However, a significant correlation was found within both subgroups. Objective sleep quality was suggested to be worse in male athletes than in female athletes, implying that sleep architecture may be related to the muscle volume.
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Affiliation(s)
- Eri Kitamura
- Department of Obstetrics and Gynecology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yu Kawasaki
- Department of Obstetrics and Gynecology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takatoshi Kasai
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan; Cardiovascular Respiratory Sleep Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan; Department of Cardiovascular Management and Remote Monitoring, Juntendo University Graduate School of Medicine, Tokyo, Japan; Sleep and Sleep-Disordered Breathing Center, Juntendo University Hospital, Tokyo, Japan.
| | - Itsuki Midorikawa
- School of Health and Sports Science, Juntendo University, Tokyo, Japan
| | - Nanako Shiroshita
- Cardiovascular Respiratory Sleep Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan; Department of Cardiovascular Management and Remote Monitoring, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Fusae Kawana
- Cardiovascular Respiratory Sleep Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan; Department of Cardiovascular Management and Remote Monitoring, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Etsuko Ogasawara
- School of Health and Sports Science, Juntendo University, Tokyo, Japan; Japanese Center for Research on Women in Sport, Juntendo University, Tokyo, Japan
| | - Mari Kitade
- Department of Obstetrics and Gynecology, Juntendo University Graduate School of Medicine, Tokyo, Japan; Japanese Center for Research on Women in Sport, Juntendo University, Tokyo, Japan
| | - Atsuo Itakura
- Department of Obstetrics and Gynecology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Natsue Koikawa
- School of Health and Sports Science, Juntendo University, Tokyo, Japan; Japanese Center for Research on Women in Sport, Juntendo University, Tokyo, Japan
| | - Takao Matsuda
- Institute of Sport Medicine, National Hospital Organization Nishibeppu National Hospital, Oita, Japan
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Thevis M, Kuuranne T, Geyer H. Annual banned-substance review: Analytical approaches in human sports drug testing 2019/2020. Drug Test Anal 2020; 13:8-35. [PMID: 33185038 DOI: 10.1002/dta.2969] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 11/08/2020] [Indexed: 12/18/2022]
Abstract
Analytical chemistry-based research in sports drug testing has been a dynamic endeavor for several decades, with technology-driven innovations continuously contributing to significant improvements in various regards including analytical sensitivity, comprehensiveness of target analytes, differentiation of natural/endogenous substances from structurally identical but synthetically derived compounds, assessment of alternative matrices for doping control purposes, and so forth. The resulting breadth of tools being investigated and developed by anti-doping researchers has allowed to substantially improve anti-doping programs and data interpretation in general. Additionally, these outcomes have been an extremely valuable pledge for routine doping controls during the unprecedented global health crisis that severely affected established sports drug testing strategies. In this edition of the annual banned-substance review, literature on recent developments in anti-doping published between October 2019 and September 2020 is summarized and discussed, particularly focusing on human doping controls and potential applications of new testing strategies to substances and methods of doping specified the World Anti-Doping Agency's 2020 Prohibited List.
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Affiliation(s)
- Mario Thevis
- Center for Preventive Doping Research - Institute of Biochemistry, German Sport University Cologne, Cologne, Germany.,European Monitoring Center for Emerging Doping Agents, Cologne, Germany
| | - Tiia Kuuranne
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Genève and Lausanne, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Epalinges, Switzerland
| | - Hans Geyer
- Center for Preventive Doping Research - Institute of Biochemistry, German Sport University Cologne, Cologne, Germany.,European Monitoring Center for Emerging Doping Agents, Cologne, Germany
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Boguszewski CL, Boguszewski MCDS. What's in a name? What we call growth hormone is much more than just a growth-related peptide. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2019; 63:546-548. [PMID: 31939478 PMCID: PMC10522237 DOI: 10.20945/2359-3997000000183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 11/21/2019] [Indexed: 11/23/2022]
Affiliation(s)
- Cesar Luiz Boguszewski
- Serviço de Endocrinologia e MetabologiaHospital de ClínicasUniversidade Federal do ParanáCuritibaPRBrasil Departamento de Clínica Médica, Serviço de Endocrinologia e Metabologia do Hospital de Clínicas da Universidade Federal do Paraná (SEMPR), Curitiba, PR, Brasil
| | - Margaret Cristina da Silva Boguszewski
- Serviço de Endocrinologia e MetabologiaHospital de ClínicasUniversidade Federal do ParanáCuritibaPRBrasil Departamento de Pediatria, Serviço de Endocrinologia e Metabologia do Hospital de Clínicas da Universidade Federal do Paraná (SEMPR), Curitiba, PR, Brasil
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