TY - RPRT TI - Cross-sectional and longitudinal research approaches: running pace and step characteristics of elite athletes in the 400-m hurdles AU - Otsuka, M. AU - Isaka, T. PY - 2018 DO - 10.1101/410464 UR - https://www.biorxiv.org/content/10.1101/410464v1 ID - 10.1101/410464 ER -