The effect of muscle fatigue on instep kicking kinetics and kinematics in association football

Abstract

The aim of this study was to examine the effect of leg muscle fatigue on the kinetics and kinematics of the instep football kick. Fatigue was induced by repeated, loaded knee extension (40% body weight) and flexion (50% body weight) motions on a weight-training machine until exhaustion. The kicking motions of seven male players were captured three-dimensionally at 500 Hz before and immediately after the fatigue protocol. The significantly slower ball velocity observed in the fatigue condition was due to both reduced lower leg swing speed and poorer ball contact. The reduced leg swing speed, represented by a slower toe linear velocity immediately before ball impact and slower peak lower leg angular velocity, was most likely due to a significantly reduced resultant joint moment and motion-dependent interactive moment during kicking. These results suggest that the specific muscle fatigue induced in the present study not only diminished the ability to generate force, but also disturbed the effective action of the interactive moment leading to poorer inter-segmental coordination during kicking. Moreover, fatigue obscured the eccentric action of the knee flexors immediately before ball impact. This might increase the susceptibility to injury.

Acute effects of endurance exercise on jumping and kicking performance in top‐class young soccer players

“…In a study of ten male amateur soccer players, Kellis et al (2006) reported that ball velocity decreased significantly (P<0.01) after a 90-min intermittent exercise protocol. A significant (P<0.05) reduction in ball velocity was also observed in seven male adult soccer players after repeated loaded knee extensión (40% body mass) and flexión (50% body mass) motions on a weight-training machine until exhaustion (Apriantono, Nunome, Ikegami, & Sano, 2006). The ball velocity attained by five skilled male soccer players was significantly greater before performing a 6-min step test from a height of 0.5 m at a cadenee of 30 steps per minute, than after the step test (Lees & Davies, 1988).…”

Hip Rotational Velocities During the Full Golf Swing

“…Just as there have been studies on upper extremity rotational velocities during the throwing motion (Dillman et al, 1993;Fleisig and Andrews, 1995), there have also been studies that have quantified lower extremity rotational velocities in several sports (Aprianton et al, 2006;Kellis et al, 2006;Nunome et al, 2002;. However, these studies have addressed a lower limb moving in an open kinetic chain, typically involving the kicking leg.…”

Bilateral Leg Differences in Soccer Kick Kinematics Following Exhaustive Running Fatigue

“…(8) has been used in the present study. The kinematics were first computed from unsmoothed coordinates until three frames before ball impact, by which appropriate second derivatives were obtained without any influence of ball impact using central differentiation.…”

“…A few studies have reported a decline in kicking performance after various fatigue protocols (8)(9)(10). However, these studies focused on fatigue effects in kicking with the preferred leg.…”