Revista UIS Ingenierías

| 2018

Comparative dynamic analysis of the effect of a well-performed technique of the snatchon the knee joint

Diana Yaquelin Barrero-Malagón, Laura Juliana Suárez-Collazos

Dinámica, Departamento de Ingeniería Mecánica, Universidad de los Andes


Comparative dynamic analysis of the effect of a well-performed technique of the snatchon the knee joint


The Snatchis part of the sport of weightlifting currently used in recreational strength training workouts, and it has shown a high potential of musculoskeletal injury risk of lower limbs due to poor executions of the exercise. The main purpose of this study is to present a comparative dynamic analysis of motion oncross fitters ofthe same gender but of different sport level (beginner and professional), based on position and force data obtained from a capture motion analysis using the “Helen Hayes” protocol. The dynamic reactions on the knee joint of two women performing the Snatch with and without a weighted bar are presented for the three phases of a well-performed technique. Subjects were instrumented with “Moticon” force sensors (Sensing Foot Dynamics) operating at 50 Hz; four cameras “OptiTrack Prime 13” at 100 Hz with passive markers were used to provide the input parameters of the dynamic analysis. Information found indicates that there is a 6.11% increase in the reaction forces supported by the knee joint of the beginner comparedto the one of the professional crossfitter. However, power generation along the complete motion of the Snatch is 171.81% higher for the beginner during the catching phase when using a not weighted bar and 5.08% higher for the professional women during the second pull when using the bar.

Moticon's Summary

Contact Us
Book a free online demo or use the contact form to get in touch
Subscribe to our newsletter for regular updates

Select your desired system

The cutting edge test based outcome assessment system for health professionals and trainers

The most versatile toolkit for free data acquisition and comprehensive analytics in research

Have a general inquiry?

Write us a message for general questions about products and solutions or if you’d like to discuss other topics.

The form was sent successfully.

You will be contacted shortly.


Stay one step ahead!

Subscribe to our newsletter for the latest information on case studies, webinars, product updates and company news

Get support

Check our FAQ database for answers to frequently asked questions

Describe your issue in as much detail as possible. Include screenshots or files if applicable.

Need help?
Want a live demo?
Interested in prices?
Want to say hello?
Always just a call away
+49 89 2000 301 60