Kas Hırsızı (Sarkopeni) ve Egzersiz
Özet
Sarkopeni, özellikle yaşlanmayla birlikte ortaya çıkan, ilerleyici ve genel iskelet kası kütlesi, kas gücü ve fiziksel performans kaybı ile karakterize önemli bir geriatrik sağlık sorunudur. Toplum genelinde %1 ile %29 arasında değişen bir prevalansa sahip olan sarkopeni, bakımevlerinde yaşayan kırılgan yaşlılarda üçte bir oranına kadar yükselmektedir. Gelişiminde fiziksel aktivite eksikliği, yetersiz ve düşük proteinli beslenme, kronik inflamasyon ve yaşa bağlı fizyolojik gerileme etkilidir. Tanı sürecinde EWGSOP2 rehberliğinde el kavrama gücü, kas kütlesi indeksi ve yürüme hızı değerlendirilmekte; ölçümlerde DEXA, BIA, kısa fiziksel performans bataryası, zamanlı kalk yürü testi ve SARC-F anketi gibi teknikler kullanılmaktadır. Sarkopeninin birincil, ikincil ve üçüncül korunma ile tedavisinde anahtar rol egzersiz ve beslenme müdahalelerine aittir. Beslenme tarafında Akdeniz diyeti, günlük 1.0-1.5 g/kg yüksek kaliteli protein, lösin, esansiyel amino asitler ve D vitamini desteği önerilmektedir. Egzersiz yaklaşımında ise direnç egzersizleri (RE), aerobik antrenmanlar (AET) ve yüksek yoğunluklu interval antrenmanlar (HIT); mitokondriyal biyogenezi, protein sentezini ve insülin duyarlılığını artırarak kas kütlesi ile fonksiyonel kapasiteyi korumaktadır. Egzersize uyum sağlayamayan yaşlı bireylerde ise tüm vücut titreşimi (WBV) ve elektromiyostimülasyon (WB-EMS) alternatif terapötik seçenekler sunmaktadır.
Sarcopenia is a major geriatric health problem characterized by a progressive loss of skeletal muscle mass, muscle strength, and physical performance, particularly associated with aging. With a prevalence ranging between 1% and 29% in the general population, it reaches up to one-third among frail elderly individuals living in nursing homes. Lack of physical activity, inadequate low-protein nutrition, chronic inflammation, and age-related physiological decline contribute to its development. Guided by EWGSOP2, the diagnostic process evaluates handgrip strength, muscle mass index, and gait speed, utilizing techniques such as DEXA, BIA, the Short Physical Performance Battery, the Timed Up and Go test, and the SARC-F questionnaire. Exercise and nutritional interventions play a key role in the primary, secondary, and tertiary prevention and treatment of sarcopenia. Nutritionally, the Mediterranean diet, daily high-quality protein of 1.0-1.5 g/kg, leucine, essential amino acids, and vitamin D supplementation are recommended. In terms of exercise, resistance training (RE), aerobic exercise training (AET), and high-intensity interval training (HIT) preserve muscle mass and functional capacity by enhancing mitochondrial biogenesis, protein synthesis, and insulin sensitivity. For elderly individuals unable to engage in regular exercise, whole-body vibration (WBV) and whole-body electromyostimulation (WB-EMS) offer alternative therapeutic options.
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