THE ACUTE EFFECTS OF CYCLING ON RUNNING KINEMATICS 493

This study determined the acute effects of an intense cycling bout on running kinematics (stride length and stride frequency). Furthermore, speed versus heart rate and rate of perceived exertion were evaluated. Ten, male triathletes completed two trials of testing on separate days. During the first trial (post-cycle condition), the participants completed a 30 minute high intensity cycling bout with a windtrainer, immediately followed by a maximal 5k run. Heart rate was monitored continuously throughout the cycling bout and used as an intensity gage for the next trial. For the second trial (post-run condition), the participants completed a 30 minute run at the heart rate intensity measured during the cycling bout, immediately followed by a maximal 5k run. Analysis indicated that initially after the cycling bout, the participants ran with a lower stride length (SL) and a higher stride frequency(SF) in comparison to the measurements after the running bout. In addition, after cycling, speed (SPD) versus heart rate (HR) was high and the rate of perceived exertion was low. Table