Influence of slope on subtalar pronation in submaximal running performance.
OBJECTIVE
: To investigate the slope influence on the maximal subtalar pronation in submaximal running speeds.


METHODS
: Sixteen endurance runners participated of a running economy (RE) test in a treadmill with different slopes (+1%, +5%, +10%, +15%). For each slope a 4-minute run was performed with no rest break for the purpose of measuring the magnitude of kinematic variables by means of a high frequency video camera positioned in a frontal-posterior plane of the individual.


RESULTS
: No significant differences were verified in maximal subtalar pronation between legs and between the slopes adopted, showing that changes of running technique due to modifications of slope aren't enough to modify the behavior of maximum subtalar pronation.


CONCLUSIONS
: The subtalar pronation is independent of slope, which may be influenced by other intervening variables. Level of Evidence II, Diagnostic Study.
Laboratory of Biomechanics and Ergonomics - UNICENTRO, Guarapuava, PR, Brazil.
Vinicius Machado
VM
de Oliveira
Laboratory of Biomechanics and Ergonomics - UNICENTRO, Guarapuava, PR, Brazil.
Guilherme Cesca
GC
Detoni
Laboratory of Biomechanics and Ergonomics - UNICENTRO, Guarapuava, PR, Brazil.
Cristhian
C
Ferreira
Laboratory of Biomechanics and Ergonomics - UNICENTRO, Guarapuava, PR, Brazil.
Bruno Sergio
BS
Portela
Laboratory of Physiology, Both Experimental and Applied to Physical Activity - UNICENTRO, Guarapuava, PR, Brazil.
Marcos Roberto
MR
Queiroga
Laboratory of Biomechanics and Ergonomics - UNICENTRO, Guarapuava, PR, Brazil ; Exercise Research Laboratory - UFRGS, Porto Alegre, RS, Brazil.
Marcus Peikriszwili
MP
Tartaruga
Locomotion; Pronation; Running; Subtalar joint