I would guess steroids before shoes. The record was broken in May 6, 1954, steroids were developed in the 30s and started to be used in the 50s. https://www.ac

I would guess steroids before shoes. The record was broken in May 6, 1954, steroids were developed in the 30s and started to be used in the 50s. https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2011/04/performance-enhancing-anabolic-steroid-abuse-in-women https://www.acog.org/clinical/clinical-guidance/committee-op...