East Germany, led by Ramona Neubert and Sybille Thiele, were favorites in Sofia, while Bulgaria and the USSR provided strong competition despite key absences.
Trościanka's performance included a world U20 decathlon best of 46,21 seconds in the 400 meters and a championship best of 68.87 meters in the javelin throw.
Oregon’s Peyton Bair, the defending NCAA Indoor heptathlon champion, set a world-leading score of 6371 points to break the meet record of 6272 set by Razorback Ayden Owens in 2022.