Effect of Fatigue and Graded Running on Kinematics and Kinetics Parameters in Triathletes
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 differe...
Source: International Journal of Sports Medicine - Category: Sports Medicine Authors: Mateus, Greyce Any Sousa Assump ção, Claudio Oliveira Cabido, Christian Emmanuel Torres Veneroso, Christiano Eduardo Oliveira, Saulo Fernandes Melo Fermino, Rog ério César Mortatti, Arnaldo Lima, Leonardo Coelho Rabellode Vilas Boas, Joao Paulo Banja Tags: Training & Testing Source Type: research
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