TY - CHAP M1 - Book, Section TI - Sleep Disorders, Age-Related A1 - Goodman, Catherine A1 - Helgeson, Kevin PY - 2011 T2 - Exercise Prescription for Medical Conditions: Handbook for Physical Therapists AB - Sleep disorders are commonly associated with the effects of aging. Aging affects the levels of melatonin and growth hormones, which help regulate arousal and sleep cycles. Medications taken for chronic conditions can also affect sleep cycles. Individuals who have difficulty falling asleep or staying asleep for adequate periods may use excessive chemical substances to help produce sleep and then use other substances to enhance their arousal and attention during the day.1 Individuals who work rotating shift hours or travel across time zones may find adapting to changes in their sleep cycle more difficult as they age. Sleep disorders affect mood, attention levels, and concentration during waking hours. Clients with sleep disorders may not feel they have enough energy or stamina to participate in regular exercise programs.2 SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - fadavispt.mhmedical.com/content.aspx?aid=1133952369 ER -