Author/Authors :
LEES ADRIAN نويسنده , Kellis Eleftherios نويسنده Laboratory of Neuromechanics, Department of Physical
Education and Sport Sciences at Serres, Aristotle University of
Thessaloniki, Thessaloniki, Greece , Katis Athanasios نويسنده Aristotle University of Thessaloniki, Department of
Physical Education and Sports Science of Serres, Laboratory of
Neuromechanics, Serres, Greece
Abstract :
Background Understanding fatigue effects on kicking technique with
both legs would allow coaches to design soccer-specific training
programs. Objectives The purpose of the present study was to examine
whether fatigue effects on soccer kick kinematics would differ between
the preferred and the non-preferred leg. Methods Ten adult amateur male
players (age: 24.5 ± 5.8 yrs; height: 179.2 ± 4.3 cm; mass: 79.3 ± 5.4
kg; training age: 11.5 ± 2.9 yrs) performed two instep kicks with their
preferred and non-preferred leg prior to and after running on a
treadmill till exhaustion. Three-dimensional kinematics were collected
pre and post-fatigue. Results Analysis of variance indicated a
statistically significant decline in ball speed after fatigue for both
legs (P < 0.05). Maximum linear and angular velocity for all
joints was significantly lower post fatigue for both preferred and
non-preferred leg (P < 0.05). Similarly, alterations on joint
kinematics were evident for both legs. Conclusions Soccer kick
performance declined after fatigue and this reduction was higher for the
non-preferred leg compared to preferred leg performance. These findings
indicate the need for specific exercises during the training process in
order to reduce the effects of fatigue, especially for the non-preferred
leg.
