top of page

MSR Freestyle Swimming: Part 4 Hip Flexors & Knee Extensors


Triathletes Diving Into Water

The Role of Hip Flexion & Knee Extension in Freestyle Swimming


In the realm of freestyle swimming, the hips and knees are not merely appendages but intricate machinery driving powerful and coordinated movements. The precision of the kick is governed by a complex interplay between muscles and joints, each contributing a distinct functionality to the process.


Article Index:


 

Key Structures


The initiation of the kick, the propulsive force, and the recovery phase are all part of a seamless cycle that reflects the synergy of the lower extremity muscles. In the sections that follow, we'll explore the specific structures involved in hip flexion, knee extension, and other key actions, outlining their functions and potential dysfunctions within the context of freestyle swimming. Lets first consider the anatomical structures involved in propulsion.


Hip Flexion:


  • Structures Involved: Iliopsoas and rectus femoris muscles.

  • Function: Sets the stage for the powerful downbeat in freestyle swimming.

  • Potential Dysfunction: Dysfunction may lead to a weakened or misaligned kick initiation, impacting overall propulsion and rhythm.


Knee Extension:


  • Structures Involved: Quadriceps muscle group, especially the rectus femoris.

  • Function: Adds force to the propulsive phase.

  • Potential Dysfunction: Weakness or imbalance might reduce force in the propulsive phase, diminishing power in the kick.

 

Motion Specific Release


MSR Treatment Demonstration Video


In this video, Dr. Abelson demonstrates the application of MSR (Motion Specific Release) techniques, specially tailored to address the intricate biomechanics of the lower extremity involved in freestyle swimming. He focuses on identifying and rectifying restrictions or muscle imbalances that may impede optimal function. Unaddressed, these imbalances may lead to diminished performance and an increased likelihood of injuries.


 

Triathlete Entering the Water

Conclusion


In freestyle swimming, the muscles of the lower body work like a finely-tuned engine, driving the kick's initiation, power, and recovery. Understanding the role of these muscles—from those that drive hip flexion to the quadriceps that extend the knee—is critical for targeted techniques like MSR, which can improve performance and reduce the risk of injury. For swimmers and professionals alike, applying this knowledge is key to a more thoughtful and effective approach to training and therapy, ensuring every kick counts.


 

BRIAN ABELSON DC. - The Author


Photo of Dr. Brian Abelson

Dr. Abelson's approach to musculoskeletal health care reflects a deep commitment to evidence-based practices and continuous learning. In his work at Kinetic Health in Calgary, Alberta, he integrates the latest research with a compassionate understanding of each patient's unique needs. As the Motion Specific Release (MSR) Treatment Systems developer, he views his role as both a practitioner and an educator, dedicated to sharing knowledge and techniques that can benefit the wider healthcare community. His ongoing efforts in teaching and practice aim to contribute positively to the field of musculoskeletal health, with a constant emphasis on patient-centered care and the collective advancement of treatment methods.


 


MSR Instructor Mike Burton Smiling

Join Us at Motion Specific Release


Enroll in our courses to master innovative soft-tissue and osseous techniques that seamlessly fit into your current clinical practice, providing your patients with substantial relief from pain and a renewed sense of functionality. Our curriculum masterfully integrates rigorous medical science with creative therapeutic paradigms, comprehensively understanding musculoskeletal diagnosis and treatment protocols.


Join MSR Pro and start tapping into the power of Motion Specific Release. Have access to:

  • Protocols: Over 250 clinical procedures with detailed video productions.

  • Examination Procedures: Over 70 orthopedic and neurological assessment videos and downloadable PDF examination forms for use in your clinical practice are coming soon.

  • Exercises: You can prescribe hundreds of Functional Exercises Videos to your patients through our downloadable prescription pads.

  • Article Library: Our Article Index Library with over 45+ of the most common MSK conditions we all see in clinical practice. This is a great opportunity to educate your patients on our processes. Each article covers basic condition information, diagnostic procedures, treatment methodologies, timelines, and exercise recommendations. All of this is in an easy-to-prescribe PDF format you can directly send to your patients.

  • Discounts: MSR Pro yearly memberships entitle you to a significant discount on our online and live courses.


Integrating MSR into your practice can significantly enhance your clinical practice. The benefits we mentioned are only a few reasons for joining our MSR team.


 

References


  1. Arellano, R., Pardillo, S., & Gavilán, A. (2006). Underwater undulatory swimming: kinematic characteristics, vortex generation and application during the start, turn, and swimming strokes. Sports Biomechanics, 5(1), 1-24.

  2. Barbosa, T. M., Morais, J. E., Marinho, D. A., Silva, A. J., Marques, M. C., & Costa, M. J. (2018). The power output and sprinting performance of young swimmers. Journal of Strength and Conditioning Research, 32(3), 656-665.

  3. Becker, T., & Havriluk, R. (2010). Bilateral force production symmetry during the pull phase of the swimming start. Journal of Swimming Research, 18, 5-11.

  4. Briggler, M., & Hall, J. (2016). Prevention and treatment of swimmer's shoulder. International Journal of Sports Physical Therapy, 11(6), 861.

  5. Brown, P., & Chow, J. (2011). Analysis of swim performance in the 2000 and 2004 Olympic Games. Journal of Sports Sciences, 29(12), 1265-1271.

  6. Cappaert, J. M., Pease, D. L., & Troup, J. P. (1996). Biomechanics of swimming. In Biomechanics in Sport: Performance Enhancement and Injury Prevention (pp. 175-189). Blackwell Science Ltd.

  7. Ciullo, J. V., & Stevens, G. H. (1989). The prevention and treatment of injuries to swimmers. Sports Medicine, 8(4), 236-247.

  8. Figueiredo, P., Gonçalves, P., Moreira, M., & Toussaint, H. M. (2013). Monitoring acute effects on athletic performance with mixed linear modeling. Medicine and Science in Sports and Exercise, 45(7), 1303-1311.

  9. Havriluk, R. (2006). Quantitative evaluation of swimming technique relative to physiological responses. The Journal of Swimming Research, 16, 11-18.

  10. Leroy, P., Chollet, D., Seifert, L., & Lemaitre, F. (2008). Video analysis of the glide in the four swimming techniques. International Journal of Sports Medicine, 29(6), 477-483.

  11. Leroyer, P., Seifert, L., Chollet, D., & Toussaint, H. (2013). Arm coordination, power, and swim efficiency in national and regional front crawl swimmers. Human Movement Science, 32(2), 324-341.

  12. Maglischo, E. W. (2003). Swimming fastest. Human Kinetics.

  13. Payton, C. J., Bartlett, R. M. (2007). Biomechanical Evaluation of Movement in Sport and Exercise: The British Association of Sport and Exercise Sciences Guide. Routledge.

  14. Psycharakis, S. G., Sanders, R. H., & McCabe, C. B. (2010). Stroke and turn performances of elite swimmers in the 200 m individual medley. Sports Biomechanics, 9(1), 48-58.

  15. Ristolainen, L., Heinonen, A., Waller, B., Kujala, U. M., & Kettunen, J. A. (2010). Gender differences in sport injury risk and types of injuries: a retrospective twelve-month study on cross-country skiers, swimmers, long-distance runners and soccer players. Journal of Sports Science & Medicine, 9(3), 441.

  16. Saavedra, J. M., Escalante, Y., & Rodríguez, F. A. (2012). A multivariate analysis of performance in young swimmers. Pediatric Exercise Science, 24(1), 135-151.

  17. Sakonidis, C. H., Skordilis, E. K., & Papadopoulos, C. (2014). Gender differences in swimming disciplines–Can men and women adopt each other's techniques? Journal of Sports Sciences, 32(1), 78-88.

  18. Sanders, R., Psycharakis, S., McCabe, C., Naemi, R., Connaboy, C., Li, S., & Scott, G. (2015). Analysis of swimming performance: perceptions and practices of US-based swimming coaches. Journal of Sports Sciences, 33(10), 997-1005.

  19. Seifert, L., Chollet, D., & Rouard, A. (2010). Effect of swimming velocity on arm coordination in the front crawl: a dynamic analysis. Journal of Sports Sciences, 28(9), 933-943.

  20. Stallman, R. K., Junge, M., & Blixt, T. (2008). The teaching of swimming based on a model derived from the forces influencing aquatic locomotion. European Journal of Sport Science, 8(2), 61-71.

  21. Ungerechts, B. E., Wilke, K., & Reischle, K. (1988). A comparison of the movement patterns in swimming. International Journal of Sport Biomechanics, 4(3), 219-232.

  22. Vantorre, J., Chollet, D., & Seifert, L. (2014). Biomechanical analysis of the swim-start: A review. Journal of Sports Science & Medicine, 13(2), 223.

  23. Wanivenhaus, F., Fox, A. J., Chaudhury, S., & Rodeo, S. A. (2012). Epidemiology of injuries and prevention strategies in competitive swimmers. Sports Health, 4(3), 246-251.


 

Disclaimer:


The content on the MSR website, including articles and embedded videos, serves educational and informational purposes only. It is not a substitute for professional medical advice; only certified MSR practitioners should practice these techniques. By accessing this content, you assume full responsibility for your use of the information, acknowledging that the authors and contributors are not liable for any damages or claims that may arise.


This website does not establish a physician-patient relationship. If you have a medical concern, consult an appropriately licensed healthcare provider. Users under the age of 18 are not permitted to use the site. The MSR website may also feature links to third-party sites; however, we bear no responsibility for the content or practices of these external websites.


By using the MSR website, you agree to indemnify and hold the authors and contributors harmless from any claims, including legal fees, arising from your use of the site or violating these terms. This disclaimer constitutes part of the understanding between you and the website's authors regarding the use of the MSR website. For more information, read the full disclaimer and policies in this website.


Recent Posts

See All
bottom of page