Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
, 30 (4), 642-648

Electromyographic Activity of Selected Trunk, Core, and Thigh Muscles in Commonly Used Exercises for ACL Rehabilitation

Affiliations

Electromyographic Activity of Selected Trunk, Core, and Thigh Muscles in Commonly Used Exercises for ACL Rehabilitation

Omid A Khaiyat et al. J Phys Ther Sci.

Abstract

[Purpose] Most of rehabilitation programmes for Anterior Cruciate Ligament (ACL) injury focus on quadriceps-hamstrings activation imbalances and less is known about kinetically linked muscles. This study investigated electromyographic activity of selected trunk, core, and thigh muscles during common rehabilitation exercises for ACL injury. [Subjects and Methods] Twelve active female volunteers participated in this cross-sectional laboratory study. Surface EMG was used to compare activation of eight trunk, hip/core, and lower limb muscles: Erector Spinae (ES), Rectus Abdominis (RA), Gluteus Maximus (GM), Vastus Lateralis (VL), Rectus Femoris (RF), Vastus Medialis (VM), Biceps Femoris (BF), and Semitendinosus (ST) during Forward Lunge, Double Leg Raise, Glute Bridge, Sit-Up, and Squat. [Results] Forward lunge produced significantly higher activation in the VM (61.1 ± 19.4), VL (59.2 ± 12.9), and RF (32.0 ± 2.6). Double leg raise generated highest activity in the RF (26.6 ± 2.8) and RA (43.3 ± 4.4); and Glute Bridge in the GM (44.5 ± 19.0) and BF (22.4 ± 4.3). Sit-up produced the highest activation in the RF (36.6 ± 4.7) followed by RA (18.9 ± 3.8). Squat produced a higher activation in VL (55.0 ± 12.9), VM (51.5 ± 18.2), and ES (40.4 ± 18.3). [Conclusion] This study provide further evidence for developing training programmes for ACL injury prevention and rehabilitation. A combination of exercises to reinstate quadriceps-hamstrings activation balance and enhance core stability is recommended.

Keywords: Activation balance; Electromyography; Neuromuscular function.

Figures

Fig. 1.
Fig. 1.
Mean normalized EMG activity (%EMGmax) for the lower extremity muscles during exercises. DLR: Double Leg Raise; FL: Forward Lunge; GB: Glute Bridge; SU: Sit-Up; SQ: Squat.
Fig. 2.
Fig. 2.
Mean normalized EMG activity (%EMGmax) for the core/trunk muscles during exercises. DLR: Double Leg Raise; FL: Forward Lunge; GB: Glute Bridge; SU: Sit-Up; SQ: Squat.

Similar articles

See all similar articles

Cited by 2 articles

References

    1. Lorenz D, Reiman M: The role and implementation of eccentric training in athletic rehabilitation: tendinopathy, hamstring strains, and ACL reconstruction. Int J Sports Phys Ther, 2011, 6: 27–44. - PMC - PubMed
    1. Frobell RB, Lohmander LS, Roos EM: The challenge of recruiting patients with anterior cruciate ligament injury of the knee into a randomized clinical trial comparing surgical and non-surgical treatment. Contemp Clin Trials, 2007, 28: 295–302. - PubMed
    1. Kobayashi H, Kanamura T, Koshida S, et al. : Mechanisms of the anterior cruciate ligament injury in sports activities: a twenty-year clinical research of 1,700 athletes. J Sports Sci Med, 2010, 9: 669–675. - PMC - PubMed
    1. Lewis T: Anterior cruciate ligament injury in female athletes: why are women so vulnerable?: Literature review. Physiotherapy, 2000, 86: 464–472.
    1. Begalle RL, Distefano LJ, Blackburn T, et al. : Quadriceps and hamstrings coactivation during common therapeutic exercises. J Athl Train, 2012, 47: 396–405. - PMC - PubMed
Feedback