Sleep-Disordered Breathing (SDB)

Sleep-disordered breathing (SDB, obstructive sleep apnoea falling in this category) is strongly correlated to obesity which is increasing in large proportions in the general population; Obesity has been linked to alter respiratory events during sleep through a number of ways, this includes narrowing of upper airway structure and function and disturbance of the relation between respiratory drive and load compensation. This being the case then there is need to consider weight loss and being careful not to gain weight as possible remedies for preventing SDB be it severe or mild and its related morbidity. However there is need to quantify weight change and its impact on SDB. Previous studies linking SDB and obesity have utilized cross-sectional convenience samples of patients from clinics that have performed polysomnography on their patients or population based samples. Quite a number of small studies lacking control groups, found reduced readings of SDB following diet related weight loss on obese patients. However there is also a positive relation considering weight gain and SDB but little is known in the linkage between weight change across the spectrum of severe and mild SDB.
Today there has been no large population based analysis of the association of weight change and SDB. This information is very crucial in preclinical asymptomatic individuals with moderate and mild SDB who are likely to benefit from preventive weight control procedures. Large population based study is used to to measure the extent which weight gain is related to increased SDB severity and weight loss with reduced SDB. The study used samples from (WSCS) the Wisconsin Sleep Cohort Study, a continuing promising study on the history of SDB on middle aged adults.
In people who had SDB, it was found that there was a close relation between weight gain and increased SDB severity but in individuals who initially had mild or no SDB there was a significant realization that weight gain predicted the development of mild or severe SDB whilst weight loss was linked with a reduced SDB severity and possibility of developing SDB. These studies were conducted independently with age, sex and other factors that can contribute to getting non precise results related to body weight as it is in this case it benefited from very unique combination of features. It considered a large population sample that gave generalized and precise outcomes than the clinical based samples of severe SDB and weight loss in individuals who were obese. Unlike other studies this was able to assess the involvement between SDB and weight gain. This was an important advancement to the public health since obesity case are becoming highly prevalent today this study benefited from the high quality laboratory based polysomnographic readings of SDB.

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