Felipe García-Pinillos1, Antonio Cartón-Llorente2, Diego Jaén-Carrillo3, Pedro Delgado-Floody4, Vanessa Carrasco-Alarcón5, Cristian Martínez6, Luis E Roche-Seruendo7. 1. Department of Physical Education, Sports and Recreation, Universidad de La Frontera, Temuco, Chile. Electronic address: felipe.garcia@ufrontera.cl. 2. Department of Physiotherapy, Universidad San Jorge, Zaragoza, Spain. Electronic address: acarton@usj.es. 3. Department of Physiotherapy, Universidad San Jorge, Zaragoza, Spain. Electronic address: djaen@usj.es. 4. Department of Physical Education, Sports and Recreation, Universidad de La Frontera, Temuco, Chile. Electronic address: pedro.delgado@ufrontera.cl. 5. Department of Physical Education, Sports and Recreation, Universidad de La Frontera, Temuco, Chile. Electronic address: vanessa.carrasco@ufrontera.cl. 6. Department of Physical Education, Sports and Recreation, Universidad de La Frontera, Temuco, Chile. Electronic address: cristian.martinez.s@ufrontera.cl. 7. Department of Physiotherapy, Universidad San Jorge, Zaragoza, Spain. Electronic address: leroche@usj.es.
Abstract
BACKGROUND: Describing the response of spatiotemporal gait characteristics, and related variables such as variability and stiffness, to different stressors is important to better understand spring-mass model. RESEARCH QUESTION: This study aimed to examine the effect of fatigue induced by a running protocol on spatiotemporal gait parameters, step variability and vertical (Kvert) and leg stiffness (Kleg) during running on a treadmill. METHODS: Twenty-two trained male endurance runners performed a 60-min time trial run. An analysis of spatiotemporal parameters (contact time [CT], flight time [FT], step frequency [SF] and step length [SL]), step variability (in terms of coefficient of variation [CV]) and stiffness was conducted in two different conditions: non-fatigued (before the protocol) and fatigued (after the protocol). RESULTS: The pairwise comparisons (i.e., non-fatigued vs. fatigued condition) indicated that temporal parameters (i.e., CT and FT) experienced significant changes (p = 0.001 and <0.001, respectively). Step variability increased in presence of fatigue, with higher CV in CT (p = 0.039), FT (p = 0.005), SF (p = 0.046) and SL (p = 0.027) after the running protocol. The Kleg experienced a reduction in the fatigued condition (p < 0.001) whereas the Kvert remained unchanged (p = 0.602). SIGNIFICANCE: The results indicate that fatigue induced by a 60-min time trial run causes some adaptations in spatiotemporal gait characteristics and stiffness in trained endurance runners. Specifically, in the presence of fatigue, the athletes showed greater CT and shorter FT, higher step variability and lower leg stiffness.
BACKGROUND: Describing the response of spatiotemporal gait characteristics, and related variables such as variability and stiffness, to different stressors is important to better understand spring-mass model. RESEARCH QUESTION: This study aimed to examine the effect of fatigue induced by a running protocol on spatiotemporal gait parameters, step variability and vertical (Kvert) and leg stiffness (Kleg) during running on a treadmill. METHODS: Twenty-two trained male endurance runners performed a 60-min time trial run. An analysis of spatiotemporal parameters (contact time [CT], flight time [FT], step frequency [SF] and step length [SL]), step variability (in terms of coefficient of variation [CV]) and stiffness was conducted in two different conditions: non-fatigued (before the protocol) and fatigued (after the protocol). RESULTS: The pairwise comparisons (i.e., non-fatigued vs. fatigued condition) indicated that temporal parameters (i.e., CT and FT) experienced significant changes (p = 0.001 and <0.001, respectively). Step variability increased in presence of fatigue, with higher CV in CT (p = 0.039), FT (p = 0.005), SF (p = 0.046) and SL (p = 0.027) after the running protocol. The Kleg experienced a reduction in the fatigued condition (p < 0.001) whereas the Kvert remained unchanged (p = 0.602). SIGNIFICANCE: The results indicate that fatigue induced by a 60-min time trial run causes some adaptations in spatiotemporal gait characteristics and stiffness in trained endurance runners. Specifically, in the presence of fatigue, the athletes showed greater CT and shorter FT, higher step variability and lower leg stiffness.
Authors: Antonio Cartón-Llorente; Luis E Roche-Seruendo; Elena Mainer-Pardos; Hadi Nobari; Alberto Rubio-Peirotén; Diego Jaén-Carrillo; Felipe García-Pinillos Journal: BMC Sports Sci Med Rehabil Date: 2022-07-24
Authors: Diego Jaén-Carrillo; Antonio Cartón-Llorente; Demetrio Lozano-Jarque; Alberto Rubio-Peirotén; Luis E Roche-Seruendo; Felipe García-Pinillos Journal: Int J Environ Res Public Health Date: 2021-06-26 Impact factor: 3.390