Seasonal differences in melatonin concentrations and heart rates during sleep in obese subjects in Japan
Abstract During the past several decades, obesity has been increasing globally. In Japan, obesity is defined by a BMI of 25 kg/$ m^{2} $ or over; 28.6 % of men and 20.6 % of women are obese. Obese people have an increased incidence of developing cardiovascular, renal, and hormonal diseases and sleep...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Sato, Maki [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2012 |
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| Schlagwörter: |
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| Anmerkung: |
© ISB 2012 |
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| Übergeordnetes Werk: |
Enthalten in: International journal of biometeorology - Springer Berlin Heidelberg, 1961, 57(2012), 5 vom: 31. Okt., Seite 743-748 |
|---|---|
| Übergeordnetes Werk: |
volume:57 ; year:2012 ; number:5 ; day:31 ; month:10 ; pages:743-748 |
| Links: |
|---|
| DOI / URN: |
10.1007/s00484-012-0601-3 |
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| Katalog-ID: |
OLC210690746X |
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| 520 | |a Abstract During the past several decades, obesity has been increasing globally. In Japan, obesity is defined by a BMI of 25 kg/$ m^{2} $ or over; 28.6 % of men and 20.6 % of women are obese. Obese people have an increased incidence of developing cardiovascular, renal, and hormonal diseases and sleep disorders. Obese people also have shortened sleep durations. We investigated seasonal differences in melatonin concentrations, heart rates, and heart rate variability during sleep in obese subjects in Japan. Five obese (BMI, 32.0 ± 4.9 kg/$ m^{2} $) and five non-obese (BMI, 23.2 ± 2.9 kg/$ m^{2} $) men participated in this study in the summer and winter. Electrocardiograms were measured continuously overnight in a climatic chamber at 26 °C with a relative humidity of 50 %. Saliva samples for melatonin were collected at 2300 hours, 0200 hours, and 0600 hours. We found that melatonin concentrations during sleep in obese subjects were significantly lower than those in non-obese subjects in the winter. Heart rate during sleep in winter was significantly higher than that in summer in both obese and non-obese subjects. Heart rate variability was not significantly different in the summer and winter in both obese and non-obese subjects. Our results show that decreased nocturnal melatonin concentrations during winter in obese men may be related to higher heart rates, and this may suggest that obese men are at an increased risk of a cardiovascular incident during sleep, especially in the winter. | ||
| 650 | 4 | |a Obese | |
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| 700 | 1 | |a Kanikowska, Dominika |4 aut | |
| 700 | 1 | |a Iwase, Satoshi |4 aut | |
| 700 | 1 | |a Shimizu, Yuuki |4 aut | |
| 700 | 1 | |a Nishimura, Naoki |4 aut | |
| 700 | 1 | |a Inukai, Yoko |4 aut | |
| 700 | 1 | |a Sato, Motohiko |4 aut | |
| 700 | 1 | |a Sugenoya, Junichi |4 aut | |
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10.1007/s00484-012-0601-3 doi (DE-627)OLC210690746X (DE-He213)s00484-012-0601-3-p DE-627 ger DE-627 rakwb eng 570 550 VZ 570 VZ 12 ssgn BIODIV DE-30 fid Sato, Maki verfasserin aut Seasonal differences in melatonin concentrations and heart rates during sleep in obese subjects in Japan 2012 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © ISB 2012 Abstract During the past several decades, obesity has been increasing globally. In Japan, obesity is defined by a BMI of 25 kg/$ m^{2} $ or over; 28.6 % of men and 20.6 % of women are obese. Obese people have an increased incidence of developing cardiovascular, renal, and hormonal diseases and sleep disorders. Obese people also have shortened sleep durations. We investigated seasonal differences in melatonin concentrations, heart rates, and heart rate variability during sleep in obese subjects in Japan. Five obese (BMI, 32.0 ± 4.9 kg/$ m^{2} $) and five non-obese (BMI, 23.2 ± 2.9 kg/$ m^{2} $) men participated in this study in the summer and winter. Electrocardiograms were measured continuously overnight in a climatic chamber at 26 °C with a relative humidity of 50 %. Saliva samples for melatonin were collected at 2300 hours, 0200 hours, and 0600 hours. We found that melatonin concentrations during sleep in obese subjects were significantly lower than those in non-obese subjects in the winter. Heart rate during sleep in winter was significantly higher than that in summer in both obese and non-obese subjects. Heart rate variability was not significantly different in the summer and winter in both obese and non-obese subjects. Our results show that decreased nocturnal melatonin concentrations during winter in obese men may be related to higher heart rates, and this may suggest that obese men are at an increased risk of a cardiovascular incident during sleep, especially in the winter. Obese Sleep Seasonality Kanikowska, Dominika aut Iwase, Satoshi aut Shimizu, Yuuki aut Nishimura, Naoki aut Inukai, Yoko aut Sato, Motohiko aut Sugenoya, Junichi aut Enthalten in International journal of biometeorology Springer Berlin Heidelberg, 1961 57(2012), 5 vom: 31. Okt., Seite 743-748 (DE-627)12985106X (DE-600)280324-0 (DE-576)015150259 0020-7128 nnns volume:57 year:2012 number:5 day:31 month:10 pages:743-748 https://doi.org/10.1007/s00484-012-0601-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_70 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_4012 GBV_ILN_4277 GBV_ILN_4311 AR 57 2012 5 31 10 743-748 |
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10.1007/s00484-012-0601-3 doi (DE-627)OLC210690746X (DE-He213)s00484-012-0601-3-p DE-627 ger DE-627 rakwb eng 570 550 VZ 570 VZ 12 ssgn BIODIV DE-30 fid Sato, Maki verfasserin aut Seasonal differences in melatonin concentrations and heart rates during sleep in obese subjects in Japan 2012 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © ISB 2012 Abstract During the past several decades, obesity has been increasing globally. In Japan, obesity is defined by a BMI of 25 kg/$ m^{2} $ or over; 28.6 % of men and 20.6 % of women are obese. Obese people have an increased incidence of developing cardiovascular, renal, and hormonal diseases and sleep disorders. Obese people also have shortened sleep durations. We investigated seasonal differences in melatonin concentrations, heart rates, and heart rate variability during sleep in obese subjects in Japan. Five obese (BMI, 32.0 ± 4.9 kg/$ m^{2} $) and five non-obese (BMI, 23.2 ± 2.9 kg/$ m^{2} $) men participated in this study in the summer and winter. Electrocardiograms were measured continuously overnight in a climatic chamber at 26 °C with a relative humidity of 50 %. Saliva samples for melatonin were collected at 2300 hours, 0200 hours, and 0600 hours. We found that melatonin concentrations during sleep in obese subjects were significantly lower than those in non-obese subjects in the winter. Heart rate during sleep in winter was significantly higher than that in summer in both obese and non-obese subjects. Heart rate variability was not significantly different in the summer and winter in both obese and non-obese subjects. Our results show that decreased nocturnal melatonin concentrations during winter in obese men may be related to higher heart rates, and this may suggest that obese men are at an increased risk of a cardiovascular incident during sleep, especially in the winter. Obese Sleep Seasonality Kanikowska, Dominika aut Iwase, Satoshi aut Shimizu, Yuuki aut Nishimura, Naoki aut Inukai, Yoko aut Sato, Motohiko aut Sugenoya, Junichi aut Enthalten in International journal of biometeorology Springer Berlin Heidelberg, 1961 57(2012), 5 vom: 31. Okt., Seite 743-748 (DE-627)12985106X (DE-600)280324-0 (DE-576)015150259 0020-7128 nnns volume:57 year:2012 number:5 day:31 month:10 pages:743-748 https://doi.org/10.1007/s00484-012-0601-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_70 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_4012 GBV_ILN_4277 GBV_ILN_4311 AR 57 2012 5 31 10 743-748 |
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10.1007/s00484-012-0601-3 doi (DE-627)OLC210690746X (DE-He213)s00484-012-0601-3-p DE-627 ger DE-627 rakwb eng 570 550 VZ 570 VZ 12 ssgn BIODIV DE-30 fid Sato, Maki verfasserin aut Seasonal differences in melatonin concentrations and heart rates during sleep in obese subjects in Japan 2012 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © ISB 2012 Abstract During the past several decades, obesity has been increasing globally. In Japan, obesity is defined by a BMI of 25 kg/$ m^{2} $ or over; 28.6 % of men and 20.6 % of women are obese. Obese people have an increased incidence of developing cardiovascular, renal, and hormonal diseases and sleep disorders. Obese people also have shortened sleep durations. We investigated seasonal differences in melatonin concentrations, heart rates, and heart rate variability during sleep in obese subjects in Japan. Five obese (BMI, 32.0 ± 4.9 kg/$ m^{2} $) and five non-obese (BMI, 23.2 ± 2.9 kg/$ m^{2} $) men participated in this study in the summer and winter. Electrocardiograms were measured continuously overnight in a climatic chamber at 26 °C with a relative humidity of 50 %. Saliva samples for melatonin were collected at 2300 hours, 0200 hours, and 0600 hours. We found that melatonin concentrations during sleep in obese subjects were significantly lower than those in non-obese subjects in the winter. Heart rate during sleep in winter was significantly higher than that in summer in both obese and non-obese subjects. Heart rate variability was not significantly different in the summer and winter in both obese and non-obese subjects. Our results show that decreased nocturnal melatonin concentrations during winter in obese men may be related to higher heart rates, and this may suggest that obese men are at an increased risk of a cardiovascular incident during sleep, especially in the winter. Obese Sleep Seasonality Kanikowska, Dominika aut Iwase, Satoshi aut Shimizu, Yuuki aut Nishimura, Naoki aut Inukai, Yoko aut Sato, Motohiko aut Sugenoya, Junichi aut Enthalten in International journal of biometeorology Springer Berlin Heidelberg, 1961 57(2012), 5 vom: 31. Okt., Seite 743-748 (DE-627)12985106X (DE-600)280324-0 (DE-576)015150259 0020-7128 nnns volume:57 year:2012 number:5 day:31 month:10 pages:743-748 https://doi.org/10.1007/s00484-012-0601-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_70 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_4012 GBV_ILN_4277 GBV_ILN_4311 AR 57 2012 5 31 10 743-748 |
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10.1007/s00484-012-0601-3 doi (DE-627)OLC210690746X (DE-He213)s00484-012-0601-3-p DE-627 ger DE-627 rakwb eng 570 550 VZ 570 VZ 12 ssgn BIODIV DE-30 fid Sato, Maki verfasserin aut Seasonal differences in melatonin concentrations and heart rates during sleep in obese subjects in Japan 2012 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © ISB 2012 Abstract During the past several decades, obesity has been increasing globally. In Japan, obesity is defined by a BMI of 25 kg/$ m^{2} $ or over; 28.6 % of men and 20.6 % of women are obese. Obese people have an increased incidence of developing cardiovascular, renal, and hormonal diseases and sleep disorders. Obese people also have shortened sleep durations. We investigated seasonal differences in melatonin concentrations, heart rates, and heart rate variability during sleep in obese subjects in Japan. Five obese (BMI, 32.0 ± 4.9 kg/$ m^{2} $) and five non-obese (BMI, 23.2 ± 2.9 kg/$ m^{2} $) men participated in this study in the summer and winter. Electrocardiograms were measured continuously overnight in a climatic chamber at 26 °C with a relative humidity of 50 %. Saliva samples for melatonin were collected at 2300 hours, 0200 hours, and 0600 hours. We found that melatonin concentrations during sleep in obese subjects were significantly lower than those in non-obese subjects in the winter. Heart rate during sleep in winter was significantly higher than that in summer in both obese and non-obese subjects. Heart rate variability was not significantly different in the summer and winter in both obese and non-obese subjects. Our results show that decreased nocturnal melatonin concentrations during winter in obese men may be related to higher heart rates, and this may suggest that obese men are at an increased risk of a cardiovascular incident during sleep, especially in the winter. Obese Sleep Seasonality Kanikowska, Dominika aut Iwase, Satoshi aut Shimizu, Yuuki aut Nishimura, Naoki aut Inukai, Yoko aut Sato, Motohiko aut Sugenoya, Junichi aut Enthalten in International journal of biometeorology Springer Berlin Heidelberg, 1961 57(2012), 5 vom: 31. Okt., Seite 743-748 (DE-627)12985106X (DE-600)280324-0 (DE-576)015150259 0020-7128 nnns volume:57 year:2012 number:5 day:31 month:10 pages:743-748 https://doi.org/10.1007/s00484-012-0601-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_70 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_4012 GBV_ILN_4277 GBV_ILN_4311 AR 57 2012 5 31 10 743-748 |
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10.1007/s00484-012-0601-3 doi (DE-627)OLC210690746X (DE-He213)s00484-012-0601-3-p DE-627 ger DE-627 rakwb eng 570 550 VZ 570 VZ 12 ssgn BIODIV DE-30 fid Sato, Maki verfasserin aut Seasonal differences in melatonin concentrations and heart rates during sleep in obese subjects in Japan 2012 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © ISB 2012 Abstract During the past several decades, obesity has been increasing globally. In Japan, obesity is defined by a BMI of 25 kg/$ m^{2} $ or over; 28.6 % of men and 20.6 % of women are obese. Obese people have an increased incidence of developing cardiovascular, renal, and hormonal diseases and sleep disorders. Obese people also have shortened sleep durations. We investigated seasonal differences in melatonin concentrations, heart rates, and heart rate variability during sleep in obese subjects in Japan. Five obese (BMI, 32.0 ± 4.9 kg/$ m^{2} $) and five non-obese (BMI, 23.2 ± 2.9 kg/$ m^{2} $) men participated in this study in the summer and winter. Electrocardiograms were measured continuously overnight in a climatic chamber at 26 °C with a relative humidity of 50 %. Saliva samples for melatonin were collected at 2300 hours, 0200 hours, and 0600 hours. We found that melatonin concentrations during sleep in obese subjects were significantly lower than those in non-obese subjects in the winter. Heart rate during sleep in winter was significantly higher than that in summer in both obese and non-obese subjects. Heart rate variability was not significantly different in the summer and winter in both obese and non-obese subjects. Our results show that decreased nocturnal melatonin concentrations during winter in obese men may be related to higher heart rates, and this may suggest that obese men are at an increased risk of a cardiovascular incident during sleep, especially in the winter. Obese Sleep Seasonality Kanikowska, Dominika aut Iwase, Satoshi aut Shimizu, Yuuki aut Nishimura, Naoki aut Inukai, Yoko aut Sato, Motohiko aut Sugenoya, Junichi aut Enthalten in International journal of biometeorology Springer Berlin Heidelberg, 1961 57(2012), 5 vom: 31. Okt., Seite 743-748 (DE-627)12985106X (DE-600)280324-0 (DE-576)015150259 0020-7128 nnns volume:57 year:2012 number:5 day:31 month:10 pages:743-748 https://doi.org/10.1007/s00484-012-0601-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_70 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_4012 GBV_ILN_4277 GBV_ILN_4311 AR 57 2012 5 31 10 743-748 |
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seasonal differences in melatonin concentrations and heart rates during sleep in obese subjects in japan |
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Seasonal differences in melatonin concentrations and heart rates during sleep in obese subjects in Japan |
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Abstract During the past several decades, obesity has been increasing globally. In Japan, obesity is defined by a BMI of 25 kg/$ m^{2} $ or over; 28.6 % of men and 20.6 % of women are obese. Obese people have an increased incidence of developing cardiovascular, renal, and hormonal diseases and sleep disorders. Obese people also have shortened sleep durations. We investigated seasonal differences in melatonin concentrations, heart rates, and heart rate variability during sleep in obese subjects in Japan. Five obese (BMI, 32.0 ± 4.9 kg/$ m^{2} $) and five non-obese (BMI, 23.2 ± 2.9 kg/$ m^{2} $) men participated in this study in the summer and winter. Electrocardiograms were measured continuously overnight in a climatic chamber at 26 °C with a relative humidity of 50 %. Saliva samples for melatonin were collected at 2300 hours, 0200 hours, and 0600 hours. We found that melatonin concentrations during sleep in obese subjects were significantly lower than those in non-obese subjects in the winter. Heart rate during sleep in winter was significantly higher than that in summer in both obese and non-obese subjects. Heart rate variability was not significantly different in the summer and winter in both obese and non-obese subjects. Our results show that decreased nocturnal melatonin concentrations during winter in obese men may be related to higher heart rates, and this may suggest that obese men are at an increased risk of a cardiovascular incident during sleep, especially in the winter. © ISB 2012 |
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Abstract During the past several decades, obesity has been increasing globally. In Japan, obesity is defined by a BMI of 25 kg/$ m^{2} $ or over; 28.6 % of men and 20.6 % of women are obese. Obese people have an increased incidence of developing cardiovascular, renal, and hormonal diseases and sleep disorders. Obese people also have shortened sleep durations. We investigated seasonal differences in melatonin concentrations, heart rates, and heart rate variability during sleep in obese subjects in Japan. Five obese (BMI, 32.0 ± 4.9 kg/$ m^{2} $) and five non-obese (BMI, 23.2 ± 2.9 kg/$ m^{2} $) men participated in this study in the summer and winter. Electrocardiograms were measured continuously overnight in a climatic chamber at 26 °C with a relative humidity of 50 %. Saliva samples for melatonin were collected at 2300 hours, 0200 hours, and 0600 hours. We found that melatonin concentrations during sleep in obese subjects were significantly lower than those in non-obese subjects in the winter. Heart rate during sleep in winter was significantly higher than that in summer in both obese and non-obese subjects. Heart rate variability was not significantly different in the summer and winter in both obese and non-obese subjects. Our results show that decreased nocturnal melatonin concentrations during winter in obese men may be related to higher heart rates, and this may suggest that obese men are at an increased risk of a cardiovascular incident during sleep, especially in the winter. © ISB 2012 |
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Abstract During the past several decades, obesity has been increasing globally. In Japan, obesity is defined by a BMI of 25 kg/$ m^{2} $ or over; 28.6 % of men and 20.6 % of women are obese. Obese people have an increased incidence of developing cardiovascular, renal, and hormonal diseases and sleep disorders. Obese people also have shortened sleep durations. We investigated seasonal differences in melatonin concentrations, heart rates, and heart rate variability during sleep in obese subjects in Japan. Five obese (BMI, 32.0 ± 4.9 kg/$ m^{2} $) and five non-obese (BMI, 23.2 ± 2.9 kg/$ m^{2} $) men participated in this study in the summer and winter. Electrocardiograms were measured continuously overnight in a climatic chamber at 26 °C with a relative humidity of 50 %. Saliva samples for melatonin were collected at 2300 hours, 0200 hours, and 0600 hours. We found that melatonin concentrations during sleep in obese subjects were significantly lower than those in non-obese subjects in the winter. Heart rate during sleep in winter was significantly higher than that in summer in both obese and non-obese subjects. Heart rate variability was not significantly different in the summer and winter in both obese and non-obese subjects. Our results show that decreased nocturnal melatonin concentrations during winter in obese men may be related to higher heart rates, and this may suggest that obese men are at an increased risk of a cardiovascular incident during sleep, especially in the winter. © ISB 2012 |
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