Biomechanical Analysis of Technique. What Is It?

The proper technique for doing exercises in weightlifting, especially snatch and clean&jerk, is the decisive criterion for getting good results. If an athlete’s equipment does not meet certain standards, then he will not achieve high results!

Sooner or later there is such a moment where everyone stops seeing an increase in their results. And as the experience of many trainers shows, the main reason for this lies in the exercise technique. When lifting small weights those techniques may be absent or compensated for by the strength of the athlete. But when the athlete is lifting a barbell, technique becomes of the greatest importance.

Many athletes and even coaches do not understand why we need a biomechanical analysis of the bar and the athlete’s movement. By that logic, you might as well ask yourself why a driver needs a GPS or a speedometer in the car. For example, if you want to get from point A to point B the fastest way possible, then you choose the best option offered by the GPS and focus on it.

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In weightlifting, during the biomechanical analysis, the way the barbell is lifted is determined precisely and not approximately (this is called the movement trajectory) and is then compared with the currently existing movement technique characteristics of the world’s strongest weightlifters (of your gender and weight).

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Sports scientists have determined and created certain models of technical preparedness through various research methods, which guarantees the fastest way to achieve high results.

With the help of video computer analysis and special phone applications, you can simulate the trajectory of the projectile and understand the specifics of any mistakes.

I want to draw your attention to the 4 most common trajectories of the snatch implementation, so that we all see that “understanding technology” is not so simple as it seems at first glance.

Trajectory A is the most common trajectory. Most athletes with this movement trajectory in the snatch tend to jump back during the power position. Most often this happens when the muscles of the athlete’s legs are much stronger than the muscles of his back and it is difficult for the athlete to make efforts vertically and in a balanced way.

Trajectory B – the bar moves forward and this may indicate a number of errors:

• wrong position of the bar and feet in the starting position, as a result of which the bar leads around the lower leg;
• lack of skill “to press the bar to oneself” due to the lats;
• improper starting motion due to directing the shoulders back.

In any case, the athlete loses his application of force power due to irrational leverage and angles.

Trajectory C is the “trajectory of a beginner.” With the wrong second pull technique, the athlete does not direct the barbell up, but “hits” it with his hips so it´s forced to move forward. In this case, the athlete is forced to follow the bar. Such a snatch execution often occurs for athletes who do not fully understand the essence and meaning of the power position.

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Trajectory D is the “ideal trajectory.” In the first and second lift, the bar moves to the athlete; after a second pull, the bar moves strictly upwards and is fixed by the athlete slightly behind the vertical.

These examples very clearly show us how specific and complex the analysis of the snatch implementation can be.

Let’s return to our comparison between lifting a bar and driving a car. When driving a car, you use a speedometer to be able to, at a minimum, make sure you reach point B and also to select the optimum speed on certain road segments recommended by road signs. In weightlifting, if you want to achieve a great result, you also need to know how fast and in what areas of movement you need to “move”! This is something that even the most experienced coach wouldn´t  be able to determine just by looking.

So if biomechanical analysis is so important for an athlete that is really determined to achieve high results, which technique characteristics should be taken into account? Indeed, there are a lot of technical indicators and all of them are important. But for analysis, they need to have a certain level of knowledge in order to understand the feasibility of using them in specific situations.

Therefore, my team and I have selected biomechanical characteristics that will allow us to understand and introduce methodological adjustments to competitive exercises, which will allow you to quickly improve your technique and bring training to a new, improved level.

 In the Snatch and Clean they look like:

• the maximum speed of the barbell movement;
• the height of the barbell´s flight at the time of its maximum speed;
• the maximum height of the barbell´s flight and fixation of the bar (these numbers are calculated based on the athlete´s height).

    When analyzing the Jerk from the chest the following things are taken into account:

• the squat depth;
• the maximum height of the barbell´s flight and fixation of the bar (taking into account the athlete’s height)
• the maximum speed of the bar movement.

According to the results of the analysis, the athlete receives an expert opinion on all technical parameters and recommendations on how to improve techniques, corrective exercises and optimization of the training process. This information will certainly help to make the training process more qualitative and effective and as a result, you can reach new kilograms and records!