Isokinesis

Isokinesis is a training technique that aims to achieve equal force production throughout the entire range of motion during an exercise. Developed by physical therapist Dr. Michael Bernhardt in the 1980s, the core principle is that muscle strength can vary significantly at different joint angles. Isokinetic training utilizes specialized equipment that controls the speed of movement, so the resistance matches the force exerted by the user. As the user applies more force, the machine provides more resistance, and as they apply less force, the resistance decreases. This ensures that the muscle is working maximally at every point in the movement.

The primary goal of isokinesis is to overcome strength deficits and imbalances. By ensuring that the muscle generates maximal tension throughout the range of motion, it can help to strengthen weaker points in the movement pattern. This can be particularly beneficial in rehabilitation settings following injuries or surgery, where specific muscles or muscle groups may have weakened. Isokinetic training is often employed to help restore normal function and prevent re-injury by addressing these strength discrepancies.

While the concept of isokinesis emphasizes equal force production, the practical application often involves observing and analyzing the force curves produced during the exercise. These curves provide valuable data on an individual's strength profile. While isokinetic equipment can be expensive and is not widely available outside of specialized clinics and research settings, the underlying principles of understanding and addressing strength variations across a range of motion remain relevant in broader strength and conditioning practices.