RESEARCH

Muscle Animations, originating from the Norwegian School of Sport Sciences and the Oslo Sports Trauma Research Center, two highly respected and ranked institutions, combines published research data with our own scientific measurements to create evidence-based animations. We employ biomechanical measurement methods and programs enhanced over years to provide insights into strength training exercises. Muscle activation during exercises is heavily influenced by technical execution. Thus, animating movements with correct technique is crucial. For complex exercises, we utilize marker-based 3D analysis to model segment movements with high accuracy.

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Our high-speed system utilizes 16 infrared cameras to track 30–50 markers, varying by exercise, which allows us to precisely calculate and animate the movement of individual body segments using custom made software. For a detailed explanation of the 3D analysis process, please watch the accompanying video.

While electromyography (EMG) is widely used to assess muscle activation during strength training, it has limitations - both in accuracy and in interpretation. EMG alone cannot provide a complete picture of the mechanical load on the body. To fully understand strength exercises, it's essential to analyze external forces and joint moments through biomechanical methods. In the video below, you’ll see how EMG and joint moment analysis will give dramatically different interpretations in the bottom phase of the bench press.

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To understand how different strength exercises load the musculoskeletal system, a basic mechanical analysis of external forces acting on the body is essential. These forces create moments (torques) around the joints, which must be counteracted by internal joint moments, primarily generated by muscle activity. By analyzing external forces and their moment arms, we gain valuable insight into how muscles are used to stabilize and move each joint during an exercise.

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External forces can be measured using a variety of tools. In a biomechanical lab, for instance, force platforms embedded in the floor are used to capture ground reaction forces with high precision. When combined with 3D motion analysis, this data allows for accurate calculation of net joint moments, or even muscle forces, using Musculo-Skeletal mathematical modelling and simulation.