Exercise Analysis

The Cybex Research Institute takes a scientific look at some common, and some not so common exercises. We conduct a biomechanical analysis of a variety of exercises, examining the forces, joint torques, and movement strategies associated with each movement.

Each exercise is broken down into its parts, and its challenges and flaws are identified. Our goal is to help viewers develop a more critical eye when examining exercise techniques.

If you have any suggestions or thoughts on exercises you would like to see examined, please click here.

Pushing Through The Heels

Why are people told to push through the heels while performing ground-based exercises, like the squat? This study attempts to answer this question by bringing people into the laboratory and asking them to squat while instructing them to push through different spots on their feet.

Step Up

The step up is a fundamental exercise that increases strength, power and stability as each leg is worked independently. However, the exercise is full of nuance as subtle changes in position and movement can impact the outcomes.

Unilateral Box Squat

The unilateral or single leg box squat is a challenging exercise designed to increase strength, stability and power. There are two forms of this exercise: the pistol squat and the free hanging leg. This video will analyze the latter exercise.

Physioball Wall Squat

The physioball wall squat is a popular exercise that is often used as a training tool for free body squats or for simulating other ground based exercises. The squat is thought to produce a well-balanced exercise that is easy on joints. But if not properly executed, the exercise effect is questionable.


In this video, Dr. Juris evaluates two versions of the forward lunge: one with the trunk upright and one with the body inclined forward. Using an instrumented foot plate to measure the results from these two lunges, Dr. Juris notes how these exercises yield different results.