Age-Related Alterations in Sleep Quality and Neuroendocrine Function: Interrelationships and Implications
Article Abstract:
Age-related changes in sleep may affect hormone levels, which in turn may cause changes in body composition and function. A study published in 2000 showed that a decrease in deep sleep in older men caused a decrease in growth hormone levels. Growth hormone is secreted at night, usually during deep sleep.
Publication Name: JAMA, The Journal of the American Medical Association
Subject: Health
ISSN: 0098-7484
Year: 2000
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Basal Muscle Amino Acid Kinetics and Protein Synthesis in Healthy Young and Older Men
Article Abstract:
The loss of muscle tissue in aged people is not caused by changes in protein and amino acid metabolism, according to a study of 26 young men and 22 elderly men. It is likely that a combination of factors causes muscle loss, which in turn leads to loss of strength, function, and independence.
Publication Name: JAMA, The Journal of the American Medical Association
Subject: Health
ISSN: 0098-7484
Year: 2001
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Age-Related Changes in Slow Wave Sleep and REM Sleep and Relationship With Growth Hormone and Cortisol Levels in Healthy Men
Article Abstract:
Changes in sleep stages in old age appear to alter blood levels of some hormones. In a study of 149 men, older men with fewer deep sleep stages had lower levels of growth hormone. However, a decrease in REM sleep after the age of 50 caused increased levels of cortisol.
Publication Name: JAMA, The Journal of the American Medical Association
Subject: Health
ISSN: 0098-7484
Year: 2000
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