Which type of resistance is used in isokinetic contractions?

The type of resistance used in isokinetic contractions is characterized by constant resistance throughout the entire range of motion. Isokinetic exercises involve dynamic movements performed at a constant speed, where the amount of resistance is adjusted to match the effort exerted by the individual. This means that regardless of the angle of joint motion, the resistance remains consistent, allowing the muscles to exert maximum force throughout the movement. This property is crucial for both rehabilitation and strength training, as it can help improve muscle strength and endurance safely and effectively.

In contrast, the other options describe different types of resistance training. For instance, variable resistance changes throughout the movement, adjusting according to the muscle's strength at different joint angles, while maximum resistance would imply a fixed high level of resistance that may not reflect the muscle's capacity effectively at all angles. Gradual increases in resistance refer more to progressive overload strategies rather than the constant nature of isokinetic resistance. Understanding the unique characteristics of isokinetic contractions is essential for applying the right training techniques in personal training and rehabilitation contexts.