The fastest female butterfly swimmers were younger than the fastest male butterfly swimmers - Zingg, M. A.; Wolfrum, M.; Rüst, C. A.; Rosemann, T.; Lepers, R.; Knechtle, B. (Medicina Sportiva, 2014)
Keywords: swimming; butterfly swimming; female; male; high performance sport; elite sport; age; Poland; endurance sports; junior sports; training science