TY JOUR TI IMPROVING PHYSICAL QUALITIES AND EVALUATINGTHE EFFECTIVENESS OF SPRINTER SPECIALISTS KW improvement KW physical qualities KW assessment of effectiveness KW sprint specialization KW speed endurance KW functionality KW training effect JO Bulletin of the Angarsk State Technical University AU Yaroshevich, I.N. PY 2025 IS 1 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»