Effect of Fatigue and Graded Running on Kinematics and Kinetics Parameters in Triathletes.

Autor:	Mateus GAS; Institute of Physical Education and Sports, Federal University of Ceará, Fortaleza, Brazil., Assumpção CO; Institute of Physical Education and Sports, Federal University of Ceará, Fortaleza, Brazil., Cabido CET; Post-Graduate Program in Physical Education - Federal University of Maranhão, Brazil., Veneroso CE; Post-Graduate Program in Physical Education - Federal University of Maranhão, Brazil., Oliveira SFM; Human Performance Laboratory, Pernambuco State University, Recife-PE, Brazil., Fermino RC; Post-Graduate Program in Physical Education - Federal Technological University of Paraná, Curitiba, Brazil., Mortatti A; Graduate Program in Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil., Lima LCR; Department of Physical Education, UNESP, Rio Claro, Brazil., Vilas Boas JP; Biomechanics, Faculty of Sport, University of Porto, Porto, Portugal., Banja Fernandes TL; Institute of Physical Education and Sports, Federal University of Ceará, Fortaleza, Brazil.
Jazyk:	angličtina
Zdroj:	International journal of sports medicine [Int J Sports Med] 2022 Aug; Vol. 43 (9), pp. 797-803. Date of Electronic Publication: 2022 Apr 08.
DOI:	10.1055/a-1774-2125
Abstrakt:	This study aimed to evaluate the effect of cycling-induced fatigue on subsequent running with different ground inclinations on triathletes. Twenty male triathletes ran on a treadmill at individual speeds, on three inclines: level (0%), 7% uphill (7%), and 7% downhill (-7%). Subsequently, the athletes performed an incremental ramp-to-exhaustion (RTE) protocol on an ergometric bicycle until task failure and repeated the running protocol (POST-RTE). During running and cycling was monitored perceived exertion (RPE) and heart rate (HR). Plantar pressure distribution, peak plantar pressure, total foot area, and ground contact time were measured by an in-shoe sensor. Analysis of variance showed that HR (p=0.001; η2=0.63) and RPE (p=0.001; η2=0.82 large effect) were higher in POST-RTE, without interactions between slopes and fatigue. The heel load showed difference between 0 and 7% and 7 and -7% ( p =0.001; η 2 =0.44 large effect) with higher value in -7%. The midfoot showed differences between 0 and -7% with higher value in 0% ( p =0.03; η 2 =0.15 small effect). The contact time showed interactions between fatigue and slopes with a higher value in POST-RTE. Coaches should be aware that training on the uphill and downhill surfaces can alter the plantar load on different foot parts. Competing Interests: The authors declare that they have no conflict of interest. (Thieme. All rights reserved.)
Databáze:	MEDLINE
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