Ключевые слова: 2019, 4x400, arm, athlete, athletics, baton, championships, competition, competitive, dynamic, female, field, final, group, hand, leader, line, meters, motion, one, outdoor, passing, people, race, real, relay, run, runner, runners, running, sport, sprint, sprinter, stadium, starting, summer, team, timer, track, watch, woman, women, world,