Differences in Associations between Visceral Fat Accumulation and Obstructive Sleep Apnea by Sex
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- Yuka Harada
- Department of Respiratory Medicine and
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- Toru Oga
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University; and
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- Yuichi Chihara
- Department of Respiratory Medicine and
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- Masanori Azuma
- Department of Respiratory Medicine and
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- Kimihiko Murase
- Department of Respiratory Medicine and
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- Yoshiro Toyama
- Department of Respiratory Medicine and
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- Kensaku Aihara
- Department of Respiratory Medicine and
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- Kiminobu Tanizawa
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University; and
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- Chikara Yoshimura
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University; and
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- Takefumi Hitomi
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University; and
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- Tomohiro Handa
- Department of Respiratory Medicine and
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- Tomomasa Tsuboi
- Department of Respiratory Medicine, National Hospital Organization Minami Kyoto Hospital, Kyoto, Japan
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- Michiaki Mishima
- Department of Respiratory Medicine and
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- Kazuo Chin
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University; and
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説明
The difference in mortality from obstructive sleep apnea (OSA) by sex is an important issue. Visceral fat, a significant risk factor for cardiovascular disease, was reported to be closely related to OSA.To assess the different associations between OSA and visceral fat area (VFA) by sex, which might account for the different prognosis in men and women with OSA.Participants were 271 men and 100 women consecutively hospitalized for examination of OSA from October 2008 to December 2010. Among the 371 participants, relationships were analyzed between fat areas by computed tomography, comorbidity, polysomnographic data, arterial blood gas, pulmonary function, and venous blood data. Multiple regression analyses were performed to identify variables independently associated with VFA and subcutaneous fat area for each sex.Despite similar body mass index (BMI) and waist circumference, men had larger VFA, more severe OSA, and more severe dyslipidemia than women. Multiple regression analyses revealed that in men, not only age and BMI but also minimal oxygen saturation (contribution rate [R(2)], 4.6%) during sleep, and alveolar-arterial oxygen difference (R(2) = 7.6%) were independently associated with VFA. Conversely, VFA was associated only with BMI in women.Only in men was OSA independently associated with VFA. The lesser associations between OSA and visceral fat in women might account for the lower impact of OSA on cardiovascular disease or mortality in women.
収録刊行物
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- Annals of the American Thoracic Society
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Annals of the American Thoracic Society 11 (3), 383-391, 2014-03
American Thoracic Society
