Acute effects of high-intensity intermittent training on kinematics and foot strike patterns in endurance runners |
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| Authors: | P Á Latorre-Román F García Pinillos V M Soto-Hermoso |
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| Institution: | 1. Faculty of Education Sciences, Department of Didactics of Corporal Expression, University of Jaén, Jaén, Spain;2. Faculty of Sport Sciences, Department of Physical Education and Sport, University of Granada, Granada, Spain |
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| Abstract: | The main purpose of this study was to evaluate running kinematic characteristics and foot strike patterns (FSP) during early and late stages of actual and common high-intensity intermittent training (HIIT): 5 × 2000 m with 120-s recovery between runs. Thirteen healthy, elite, highly trained male endurance runners participated in this study. They each had a personal record in the half-marathon of 70 ± 2.24 min, and each had a minimum experience of 4 years of training and competition. Heart rate (HR) and rate of perceived exertion (RPE) were monitored during HIIT. High levels of exhaustion were reached by the athletes during HIIT (HRpeak: 174.30 bpm; RPE: 17.23). There was a significant increase of HRpeak and RPE during HIIT; nevertheless, time for each run remained unchanged. A within-protocol paired t-test (first vs. last run) revealed no significant changes (P ≥ 0.05) in kinematics variables and FSP variables during HIIT. There were no substantial changes on kinematics and FSP characteristics in endurance runners after fatigue induced by a HIIT. Only the minimum ankle alignment showed a significant change. The author suggests that these results might be due to both the high athletic level of participants and their experience in HIIT. |
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| Keywords: | Fatigue-induced changes interval training long-distance runners running technique |
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