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Effects of running-induced fatigue on kinetic and kinematic running parameters in a population of recreational and competitive runners

Bogaerts, Hugo ; Galerne, ChloƩ
(2023)

Files

Bogaerts_Hugo_11722200Galerne_Chloe_15372200_2022-2023.pdf
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Details

Supervisors
Nguyen, Anh Phong
Faculty
FacultƩ des sciences de la motricitƩ
Degree label
Master [120] en sciences de la motricitƩ, orientation gƩnƩrale, Ơ finalitƩ spƩcialisƩe: kinƩsithƩrapie musculo-squelettique
Abstract
Background : Running has become a trendy, challenging and accessible sport and a physical activity for everyone with many health benefits. Recent research investigating the impact of fatigue on running gait parameters and biomechanics produced contradictory findings. Objective : This observational cross-sectional study aims to observe the evolution of running biomechanics parameters before and after a continuous submaximal running-induced fatigue protocol in a population of recreational and competitive non-injured runners. Methods : 10 recreational and competitive non-injured runners were included in the study. They performed one continuous submaximal running-induced fatigue protocol at 85% of MAS on an instrumented treadmill until reaching RPE scale (Rate of Perceived Exertion) score equal to 18/20. Results : Cadence decreased significantly after the running induced fatigue protocol, while the braking impulse, contact time and stride duration increased significantly. Leg stiffness and propulsive peak force decreased significantly after the running induced fatigue protocol, while the braking peak force increased significantly. Aerial duration time, vertical displacement of the center of mass, loading rate, vertical mechanical work, fore-aft mechanical work, total mechanical work, vertical/total mechanical work ratio and duty factor values did not change significantly. Conclusions : Health professionals must consider the acute state of fatigue of the runners in order to establish a proper rehabilitation programme. Some of the biomechanical changes associated with fatigue could potentially be associated with an increased risk of RRIs. Future research is needed to confirm these biomechanical modifications related to fatigue and determine whether modification of these variables may assist in RRIs prevention and management.