Abstract
BackgroundWe aimed to examine the effect of a high-intensity exercise bout on landing biomechanics in soccer players who underwent anterior cruciate ligament reconstruction (ACLR) and non-injured soccer players during a soccer-specific landing maneuver.MethodsEighteen soccer players who underwent ACLR and 18 normal soccer players were enrolled in this investigation (ACLR group; age, 26.11 ± 3.95 years; body mass index, 23.52 ± 2.69 kg/m2; surgery time, 5 ± 3.30 years: control group; age, 25.83 ± 3.51 years; body mass index, 24.09 ± 3.73 kg/m2, respectively). Participants were evaluated during the landing maneuver before and after carrying out the high-intensity exercise bout using the Wingate test. The intensity of the exercise was defined as a blood lactate accumulation of at least 4 mmol/L. The dependent variables included sagittal-plane kinematics and kinetics of the ankle, knee and hip joints, and electromyography activity of the gastrocnemius, hamstrings, quadriceps, and gluteus maximus.ResultsOn 2 × 2 analysis of variance, none of the dependent variable showed significant exercise×group interactions. Regardless of group, significant main effects of exercise were found. Post-exercise landing was characterized by increased flexion of hip (p = 0.01), knee (p = 0.001), and ankle joints (p = 0.002); increased extension moments of hip (p = 0.009), knee (p = 0.012), and ankle joints (p = 0.003), as well as decreased quadriceps activity (p = 0.007).ConclusionAt 1 year or more post-ACLR, the effect of the high-intensity exercise bout on landing biomechanics is not expected to differ from that experienced by healthy soccer players.
Highlights
We aimed to examine the effect of a high-intensity exercise bout on landing biomechanics in soccer players who underwent anterior cruciate ligament reconstruction (ACLR) and non-injured soccer players during a soccer-specific landing maneuver
Previous studies have reported that neuromuscular fatigue may induce several biomechanical changes that might increase the risk of anterior cruciate ligament (ACL) injuries during landing [5, 6]
In a study of male ACLR recipients and non-injured healthy males exposed to a general fatigue protocol to evaluate landing biomechanics during single-limb landing, the researchers found that fatigue induced many biomechanical changes in the ACLR limb, including decreased knee flexion and adduction moments [9]
Summary
We aimed to examine the effect of a high-intensity exercise bout on landing biomechanics in soccer players who underwent anterior cruciate ligament reconstruction (ACLR) and non-injured soccer players during a soccer-specific landing maneuver. A similar observation was reported regarding high-intensity actions, jumping ability, and sprinting after the soccer game, suggesting that fatigue developed during the game results in reduced physical performance [3, 4]. Previous studies have reported that neuromuscular fatigue may induce several biomechanical changes that might increase the risk of anterior cruciate ligament (ACL) injuries during landing [5, 6]. In a study of male ACLR recipients and non-injured healthy males exposed to a general fatigue protocol to evaluate landing biomechanics during single-limb landing, the researchers found that fatigue induced many biomechanical changes in the ACLR limb, including decreased knee flexion and adduction moments [9]. Some researchers found that fatigue-induced deficits were greater among ACLR individuals than in healthy individuals by the former exhibiting a significant reduction in hip extensor strength following the fatigue protocol [10]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
