DO ANTI-PRONATION SHOES ALTER ANKLE JOINT KINEMATICS AT DIFFERENT RUNNING
VELOCITIES? R.E.Arendse, M.P.Schwellnus, FACSM, D.R.Tabakin, N.G.Langerak,
A.St Clair Gibson, C.L.Vaughan, T.D.Noakes, FACSM. University of Cape Town,
Sports Science Institute of South Africa, Cape Town, South Africa
The purpose of the study was to compare ankle eversion and inversion
(pronation and supination) in barefoot running (BF) to running with minimal
anti-pronation shoes (NS) and maximal anti-pronation shoes (APS), at
different running velocities. Twelve (12) injury free male runners
[27(5)yrs, 73(11)kg, 1.8(0.1)m] with neutral lower limb alignment as
determined by a standard clinical biomechanical assessment, undertook
overground runnng at 2.3, 3.5 and 5.0 m/s in the BF, NS and APS conditions.
Right foot stance kinematic data were captured at 120HZ with a 6 camera
Oxford Metrics Vicon 3D Motion Analysis system. Ankle anatomical joint
angles (degrees) between initial contact and mid-stance
(eversion/pronation), and mid-stance and terminal contact
(inversion/supination) were calculated and are presented in the table
below. There was significantly less ankle eversion and inversion (pronation
and supination) for the BF vs NS and APS at 2.3 and 3.5 m/s [(p<0.05)#].
There was significantly less ankle eversion (pronation) for BF vs APS
[(p<0.05)\ddagger], and less ankle inversion (eversion) for the BF vs NS
[(p<0.05)\diamond] at 5.0m/s. A trend of greater eversion and inversion
(pronation and supination) for the NS vs APS was noted at all running
velocities. In conclusion, sports shoes increased ankle eversion and
inversion (pronation and supination) during running irrespective of the
anti-pronation properties of the shoes or the running velocity.
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