instructions): Chronic sleep disturbance is reported by nearly 50% of older adults. The high prevalence of insomnia in older adults is likely due to an interaction of age-related changes in sleep and circadian regulation, chronic illnesses and late life stressors. Recent evidence suggests that poor health contributes to poor sleep, but poor sleep can also increase the risk for poor health. Evidence from our group shows that sleep loss may promote the development or increase the severity of age-related cardio-metabolic disease. While many studies have confirmed the link between short sleep duration and cardio-metabolic disease, emerging evidence supports a relationship between insomnia symptoms and risk for cardiovascular disease. However, little is known of the impact of insomnia or its specific sleep characteristics on cardio-metabolic health in older adults. In the present study, we propose to examine in detail the relationship between sleep characteristics with cardio-metabolic risk factors in older adults with chronic insomnia. A total of 120 older adults with chronic insomnia and controls will be recruited from the Chicago Heart Association Detection Project in Industry cohort. This collaboration represents a unique and cost efficient opportunity to study the relationship between insomnia and cardio-metabolic risk factors in a large group of community based older adults ages 65-80 years of age. The overall aim of this project is to define the sleep, circadian and cardio- metabolic phenotypes of common age-related insomnia subtypes. Objective and self reported measures of nocturnal sleep, daytime sleepiness, circadian rhythm, metabolism, inflammation, and autonomic function will be assessed in older adults with chronic insomnia and compared to age, gender, race and BMI matched controls without insomnia.
The specific aims are: 1) Assess whether levels of cardio-metabolic risk factors are higher in older adults with chronic insomnia than in their counterparts without insomnia;2) Determine the role of each of the major sleep characteristics: total sleep time, sleep efficiency, latency to persistent sleep, sleep fragmentation, minutes of slow wave sleep, minutes of REM sleep, slow wave activity and high frequency activity, and daytime sleepiness on cardio-metabolic function in older adults with and without chronic insomnia;and 3) Determine the contribution of circadian phase and amplitude to the relationship between insomnia and cardio-metabolic disease risk factors. The results of the proposed study will greatly improve our understanding of the impact of insomnia and the role of specific sleep and wake characteristics on cardio-metabolic disease risk markers and daytime function in older adults.
The proposed study has important implications for public health. If chronic insomnia in older adults is associated with elevated cardio-metabolic risk factors, it would strongly underscore the importance of identifying and treating insomnia in older adults. Furthermore, these results can provide the basis for personalized approaches to the treatment of insomnia as well as the prevention of common age associated co-morbid medical and psychiatric conditions.
|Shear, Talia C; Balachandran, Jay S; Mokhlesi, Babak et al. (2014) Risk of sleep apnea in hospitalized older patients. J Clin Sleep Med 10:1061-6|
|Guyon, A; Balbo, M; Morselli, L L et al. (2014) Adverse effects of two nights of sleep restriction on the hypothalamic-pituitary-adrenal axis in healthy men. J Clin Endocrinol Metab 99:2861-8|
|Copinschi, Georges; Leproult, Rachel; Spiegel, Karine (2014) The important role of sleep in metabolism. Front Horm Res 42:59-72|
|Grimaldi, Daniela; Beccuti, Guglielmo; Touma, Carol et al. (2014) Association of obstructive sleep apnea in rapid eye movement sleep with reduced glycemic control in type 2 diabetes: therapeutic implications. Diabetes Care 37:355-63|
|Reid, Kathryn J; Santostasi, Giovanni; Baron, Kelly G et al. (2014) Timing and intensity of light correlate with body weight in adults. PLoS One 9:e92251|
|Boubekri, Mohamed; Cheung, Ivy N; Reid, Kathryn J et al. (2014) Impact of windows and daylight exposure on overall health and sleep quality of office workers: a case-control pilot study. J Clin Sleep Med 10:603-11|
|Leproult, Rachel; Holmbäck, Ulf; Van Cauter, Eve (2014) Circadian misalignment augments markers of insulin resistance and inflammation, independently of sleep loss. Diabetes 63:1860-9|
|Knutson, Kristen L (2014) Sleep duration, quality, and timing and their associations with age in a community without electricity in Haiti. Am J Hum Biol 26:80-6|
|Kim, Seong Jae; Benloucif, Susan; Reid, Kathryn Jean et al. (2014) Phase-shifting response to light in older adults. J Physiol 592:189-202|
|Summa, Keith C; Turek, Fred W (2014) Chronobiology and obesity: Interactions between circadian rhythms and energy regulation. Adv Nutr 5:312S-9S|
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