TY JOUR TI The effectiveness of fitness training sessions for mature women KW fitness KW mature women KW bioimpedance KW musculoskeletal mass JO Scientific notes of P. F. Lesgaft University AU Tarasova, L.V. AU Tonoyan, H.A. AU Linev, N.S. PY 2025 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft