Article

This study aimed to compare foot plantar pressure distribution while jogging and
running in highly trained adolescent runners. Eleven participants performed two
constant-velocity running trials either at jogging (11.2 +/- 0.9 km/h) or running
(17.8 +/- 1.4 km/h) pace on a treadmill. Contact area (CA in cm(2)), maximum
force (F(max) in N), peak pressure (PP in kPa), contact time (CT in ms), and
relative load (force time integral in each individual region divided by the force
time integral for the total plantar foot surface, in %) were measured in nine
regions of the right foot using an in-shoe plantar pressure device. Under the
whole foot, CA, F(max) and PP were lower in jogging than in running (-1.2%
[p<0.05], -12.3% [p<0.001] and -15.1% [p<0.01] respectively) whereas CT was
higher (+20.1%; p<0.001). Interestingly, we found an increase in relative load
under the medial and central forefoot regions while jogging (+6.7% and +3.7%,
respectively; [p<0.05]), while the relative load under the lesser toes (-8.4%;
p<0.05) was reduced. In order to prevent overloading of the metatarsals in adolescent runners, excessive mileage at jogging pace should be avoided.
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Langue : ANGLAIS