瑞典一项最新研究发现，睡眠过少容易导致女性腹部和腰部肥胖，而缺少深度睡眠和少梦也容易导致女性肥胖。
瑞典乌普萨拉大学日前发表公告说，约400名女性参加了该校研究人员的这一研究。研究人员在她们身边设置了专门仪器，记录她们每天睡觉的不同阶段和各个阶段持续的时间，并定期对她们的身体健康进行检测，测量她们的腰围。这一研究持续了2年，结果显示，那些每天睡眠少于5小时的人比睡眠达到8小时的人平均腰围粗了9厘米。
研究人员提奥瑞尔－哈格罗认为，肥胖和睡眠之间存在着多种复杂的联系。睡眠时间短，少梦以及缺少深度睡眠都会影响女性体内皮质醇（一种压力激素）和生长荷尔蒙的分泌，进而导致体重增加和腰腹部肥胖。这一研究和之前已经取得的研究成果结合在一起则说明，普遍的睡眠不足是造成瑞典女性目前肥胖者增多的一个重要原因。相关论文发表于《睡眠》杂志。
推荐原文出处：
SLEEP 2010;33(5): 593-598.
SHORT SLEEP DURATION AND CENTRAL OBESITY IN WOMEN
Associations between Short Sleep Duration and Central Obesity in Women
Jenny Theorell-Hagl?w, PhD1; Christian Berne, PhD2; Christer Janson, PhD1; Carin Sahlin, PhD3; Eva Lindberg, PhD1
1Department of Medical Sciences, Respiratory Medicine and Allergology, and 2Department of Medical Sciences, Internal Medicine, Uppsala University, Sweden; 3Department of Respiratory Medicine, Ume? University, Sweden
Study Objectives: The aim was to assess associations between sleep duration, sleep stages, and central obesity in women.
Design: Cross-sectional study.
Setting: City of Uppsala, Sweden.
Participants: Population-based sample of 400 women (range 20-70 years).
Interventions: Full-night polysomnography and measurement of anthropometric variables.
Measurements and Results: Sleep duration was inversely related to both waist circumference and sagittal abdominal diameter. Sleep duration remained inversely related to waist circumference (adj. β = ?1.22 cm/h; P = 0.016) and sagittal abdominal diameter (adj. β = ?0.46 cm/h; P = 0.001) after adjusting for potential confounders. Duration of slow wave sleep (SWS, adj. β = ?0.058 cm/min; P = 0.025) and REM sleep (adj. β = ?0.062 cm/min; P = 0.002) were both inversely related to waist circumference after adjustments. Moreover, duration of REM sleep was inversely related to sagittal abdominal diameter (adj. β = ?0.021 cm/min; P & 0.0001). These associations were stronger in young women (age & 50 years).
Conclusion: An inverse relationship between short sleep duration and central obesity was found in women after adjusting for confounders. Loss of SWS and REM sleep may be important factors in the association between sleep loss and central obesity.
