文章基本信息

标题：THE EFFECT OF POSTURE IN FLUID SHIFT OF HEALTHY MEN
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作者：Amanda A Reis Botega ; Beatriz Antipou dos Santos ; Daniel Barboza Queiroz 等
期刊名称：Sleep Science
印刷版ISSN：1984-0659
电子版ISSN：1984-0063
出版年度：2015
卷号：8
期号：4
页码：249-250
DOI：10.1016/j.slsci.2016.02.163
出版社：Brazilian Association of Sleep and Latin American Federation of Sleep Societies
摘要：Recent studies have shown that the fluid shift from the leg to the neck when the subject assumes the supine position contributes to upper airway collapsibility during sleep. However, the dependence of different postures in fluid has not been completely elucidated. We hypothesized that posture (supine vs sitting position) will have opposite effects on fluid shift displacement. Methods This was a cross over study in which 18 healthy male subjects remained still for 60 minutes at the supine or seated position. The experiments in the 2 postures were done in different days and the sequence was randomized. Segmental bioimpedance (InBody S10, Biospace), cervical, abdomen and calves circumferences and were measured at time 0 and 60 minutes. Results The subjects were characterized by: age and body mass index 24.0972.57 kg/m2 . Baseline parameters were similar in supine position at the beginning of the study in both positions and were: cervical circumference 38.4671.45 cm, right calf circumference 38.2072.32 left calf circumference 38.2772.10. Changes in leg segmental water in the supine position vs sitting position were significantly different (change: left leg: decrease of 127 ml70.164 in supine vs increase of 144 ml70.300 in seated position (p¼0.03). Right leg: decrease of 159 ml70.154 in supine vs increase of 52 ml70.110 in seated position (p¼0.03). Right calf circumference raised 0.60 cm70.33 in seated position while decreased 0.57 cm70.51. Left calf raised 143 ml70.269 vs decreased 127 ml70.269 (p¼0.03). Cervical circumference raised 0.54 cm70.57 and reduced 0.60 cm760 in the supine position (po0.0001). Conclusion Human body is subjected to significant posture dependent fluid shift. One hour at the sitting position is sufficient for a significant liquid accumulation in the legs with a decrease in neck circumference.