The effects of a high-intensity exercise bout on landing biomechanics post anterior cruciate ligament reconstruction: A quasi-experimental study

Date
2021
Authors
Alanazi, Ahmad Dhahawi
Mitchell, Katy
Roddey, Toni
Alenazi, Aqeel M.
Alzharni, Msaad M.
Almansour, Ahmed M.
Ortiz-Rodriguez, Alexis
Journal Title
Journal ISSN
Volume Title
Publisher
BMC
Abstract

Background: 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.


Methods: Eighteen 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.


Results: On 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).


Conclusion: At 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.

Description
Article originally published in BMC Sports Science, Medicine and Rehabilitation, 13(1). English. Published online 2021. https://doi.org/10.1186/s13102-021-00263-7
Keywords
Soccer, Fatigue, High-intensity exercise, Landing biomechanics, ACL reconstruction
Citation
This is a published version of an article that is available at https://doi.org/10.1186/s13102-021-00263-7. Recommended citation: Alanazi, A. D., Mitchell, K., Roddey, T., Alenazi, A. M., Alzhrani, M. M., Almansour, A. M., & Ortiz-Rodriguez, A. (2021). The effects of a high-intensity exercise bout on landing biomechanics post Anterior Cruciate Ligament Reconstruction: A quasi-experimental study. BMC Sports Science, Medicine and Rehabilitation, 13(1). This item has been deposited in accordance with publisher copyright and licensing terms and with the author’s permission.