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6. Running Parameter Overview
Pronation angle is the sideward inclination of the foot when it hits the ground.
It indicates if the runner's foot touches the ground in an eversion or inversion
position. Negative values are associated with inversion, positive with eversion.
Strike angle indicates the forward inclination of the foot when it hits the ground.
Foot-strike types include forefoot, midfoot and rearfoot/heel strike types; these
are characterized by initial contact of the ball of the foot, ball and heel of the
foot simultaneously and heel of the foot respectively. The associated angle is
positive for heel strike, around zero for midfoot and negative for forefoot strike.
Contact time measures the average time (in milliseconds) of ground foot
contact. It decreases with increasing speed and is generally higher for rear foot
strike runners than mid and forefoot runners.
Subjects
Usain Bolt
Female Amateur
Athletes (n=30)
Half-marathon
participants (n=283)
Female Amateur
Athletes (n=30)
Trail Ultra-Marathon
runners (n=18)
Novice runners (n=210)
Asymmetry is the ratio of contact times between sides. Perfect symmetry is
given by a 0% value, values on the left side of the zero appear when left contact
time is higher than for the right side and vice-versa.
PhysiRun Live mobile user manual v1.3.1 Date: 02.05.2019
Copyright © 2018-2019, All Rights Reserved - Gait Up SA. CH-1015 Switzerland
Speed
Contact time
40 km/h
83±2ms (100m sprint)
21 km/h
140±11ms for sprinters
160±13ms for long-distance runners
18 km/h
183±16ms for mid/front strike
runners
200±21.3ms for rear strike runners
15 km/h
180±16ms for sprinters
250±20ms for long-distance runners
10 km/h
249±16ms at start of race
252±17ms after 3h of running
9 km/h
236±26ms
EPFL Innovation Park, Bat C. CH-1015 Lausanne
Gait Up SA
www.gaitup.com
TVA CHE-145.136.760
Study
reference
Cunninghal
2013
Hasegawa 2007
Cunninghal
2013
Morin 2011
Bredeweg 2013
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