Comparative methods of sarcopenia diagnostics in geriatric practice

INTRODUCTION. One of the key processes that inevitably accompany aging is considered to be a variety of changes in body composition. As we age, lean tissue components (in particular, skeletal muscles) decrease, while the content of adipose tissue increases. Progressive and generalized loss of skeletal muscle mass, strength or function (sarcopenia) leads to various adverse outcomes, including disability, deterioration in quality of life, and death. The SARC-F questionnaire is used for screening diagnostics of sarcopenia. A decrease in muscle mass is determined using dual-energy X-ray absorptiometry or bioimpedance analysis. However, the interchangeability of these methods requires clarification.