METHODS
Participants
Ten national-level sprinters (5 women, 5 men; age¼21.2 6 3.6 years, height ¼ 175 6 6 cm, mass ¼ 63.8 6 9.9 kg) volunteered for this study. All were recruited at the local track-and-field club. To be included, participants had to be short-track (100 m, 110-m hurdles, 200 m) or long-track
(400 m or 400-m hurdles) sprinters and to have had no injury in the 3 months before the study. Participants provided written informed consent, and the study was approved by the faculty of Biology and Medicine, University of Lausanne.