The effect of whole body vibration training on neuromuscular performance and knee biomechanics during landing for ACL injury prevention
Refereed conference paper presented and published in conference proceedings
CUHK Authors
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AbstractIntroduction: An effective Anterior Cruciate Ligament (ACL) injury prevention program is needed to reduce the ACL injury risk. Whole body vibration (WBV) is a neuromuscular training method that has been widely used for muscle strengthening and rehabilitation. This study aims (1) to investigate the effect of 6-week WBV training on strength performance of quadriceps and hamstring and (2) to detect its effect on neuromuscular control and knee biomechanics during landing.
Methods: 10 healthy volunteers were recruited and randomly assigned to the WBV group or the control group. Subjects in the control group did regular exercise, while subjects in the WBV group received 6 weeks of WBV training (3 times/week) in addition to regular exercise. Isokinetic peak torque of quadriceps and hamstring was measured to evaluate strength performance, while knee biomechanics, and electromyographic (EMG) activity during single leg hop and vertical drop landing were measured to quantify neuromuscular control.
Results: In WBV group, quadriceps peak torque (219.08±14.25 vs 236.58±16.8, p=0.009), hamstring peak torque (97.41±8.88 vs 113.61±9.99, p=0.017), and H:Q strength ratio (43.95±2.15 vs 47.58±2.08, p=0.047) increased significantly after WBV training, whereas there were no significant changes in the control group (p>0.05). There were no significant changes in terms of EMG activity and knee biomechanics in both groups (p>0.05).
Discussion and Conclusion: Regular WBV training significantly increases hamstring to quadriceps muscle strength, which may reduce the risk of ACL injury. We may propose to incorporate this WBV training into current ACL injury prevention program.
Methods: 10 healthy volunteers were recruited and randomly assigned to the WBV group or the control group. Subjects in the control group did regular exercise, while subjects in the WBV group received 6 weeks of WBV training (3 times/week) in addition to regular exercise. Isokinetic peak torque of quadriceps and hamstring was measured to evaluate strength performance, while knee biomechanics, and electromyographic (EMG) activity during single leg hop and vertical drop landing were measured to quantify neuromuscular control.
Results: In WBV group, quadriceps peak torque (219.08±14.25 vs 236.58±16.8, p=0.009), hamstring peak torque (97.41±8.88 vs 113.61±9.99, p=0.017), and H:Q strength ratio (43.95±2.15 vs 47.58±2.08, p=0.047) increased significantly after WBV training, whereas there were no significant changes in the control group (p>0.05). There were no significant changes in terms of EMG activity and knee biomechanics in both groups (p>0.05).
Discussion and Conclusion: Regular WBV training significantly increases hamstring to quadriceps muscle strength, which may reduce the risk of ACL injury. We may propose to incorporate this WBV training into current ACL injury prevention program.
All Author(s) ListYixuan Dai, Xin He, Chi Yin Choi, Mingqian Yu, Michael Tim-Yun Ong, Patrick Shu-Hang Yung
Name of ConferenceThe HKOA 43rd Annual Congress of The Hong Kong Orthopaedic Association
Start Date of Conference04/11/2023
End Date of Conference05/11/2023
Place of ConferenceHong Kong
Country/Region of ConferenceHong Kong
Year2023
Month11
PublisherHong Kong Academy of Medicine Press
Place of PublicationHong Kong
Pages65 - 65
LanguagesEnglish-United States
