This study assessed the effects of a competitive trail run on running kinematics and shock attenuation in well-trained trail runners. Nine male runners performed a simulated short trail running race. Prior and 5-min after the race, participants completed a 290-m downhill run at pre-determined preferred speed. Inertial measurement units were used to assess selected kinematic parameters. The contact time showed a moderate increase in the fatigued condition (pre: 0.215 (0.024) s vs. post: 0.226 (0.219) s; p<0.01; d=0.51), whereas flight time was largely decreased (pre: 0.129 (0.027) s vs. post: 0.104 (0.026) s; p<0.01; d=0.94). There was a moderate decrease in the post-race for peak sacrum acceleration (pre: 56.9 (15.8) m/s2 vs. post: 49.1 (11.9) m/s2; p=0.038; d=0.56), while peak tibial acceleration and shock attenuation showed no change (p>0.05). These findings confirm that running-induced fatigue impacts running kinematics, although shock attenuation was unaltered with the present fatiguing protocol.
Di Michele, R., Fantozzi, S., Bartolomei, S., Semprini, G., Stella, F., Ciacci, S. (2020). Effects of fatigue on kinematics and shock attenuation during downhill running.
Effects of fatigue on kinematics and shock attenuation during downhill running
Di Michele R.
;Fantozzi S.;Bartolomei S.;Semprini G.;Ciacci S.
2020
Abstract
This study assessed the effects of a competitive trail run on running kinematics and shock attenuation in well-trained trail runners. Nine male runners performed a simulated short trail running race. Prior and 5-min after the race, participants completed a 290-m downhill run at pre-determined preferred speed. Inertial measurement units were used to assess selected kinematic parameters. The contact time showed a moderate increase in the fatigued condition (pre: 0.215 (0.024) s vs. post: 0.226 (0.219) s; p<0.01; d=0.51), whereas flight time was largely decreased (pre: 0.129 (0.027) s vs. post: 0.104 (0.026) s; p<0.01; d=0.94). There was a moderate decrease in the post-race for peak sacrum acceleration (pre: 56.9 (15.8) m/s2 vs. post: 49.1 (11.9) m/s2; p=0.038; d=0.56), while peak tibial acceleration and shock attenuation showed no change (p>0.05). These findings confirm that running-induced fatigue impacts running kinematics, although shock attenuation was unaltered with the present fatiguing protocol.File | Dimensione | Formato | |
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