A Lifespan Approach to Understanding Sarcopenia
Chapter from the book:
Türkmen,
M.
&
Uluç,
E.
A.
(eds.)
2024.
Academic Research and Evaluations in the Field of Sports Sciences V.
Synopsis
The world population is aging. Population aging has been recognized not only as one of humanity's greatest achievements, but also as a societal challenge to determine how to increase healthspan and create the potential for additional years of life that will be characterized by good health and functionality. The biggest threats to achieving a healthy life are age-related physiological disorders in multiple organs, which lead to functional limitations, disability and decreased quality of life and increase the risk and severity of age-related chronic diseases. When almost every organ in the body is affected by the deleterious effects of aging, the most phenotypically visible changes affect body composition, particularly skeletal muscle, adipose tissue, and bone tissues. In adult humans, muscle mass constitutes approximately 42% of body mass, whereas in older people this percentage decreases to approximately 27%. The loss of body mass becomes clearly noticeable by age 50 and accelerates with aging. This condition is called sarcopenia (from Greek sárx, “body” and peníā” poverty). Sarcopenia is estimated to affect 10% to 16% of older people worldwide. Physical inactivity, malnutrition, smoking, excessive sleep time and diabetes are factors that increase the risk of Sarcopenia.