Eccentric overload and supramaximal training

Motorized resistance lets you set different loads for movement away from and toward the machine. Use this to plan eccentric work around the exercise and the athlete's ability to control the return phase.

Watch the full eccentric training: elastic spring and shock absorber video on YouTube

Choose the training method

• Eccentric overload: The eccentric phase has more resistance than the concentric phase. The athlete still controls and reverses the movement.
• Supramaximal eccentrics: The athlete resists a return movement they cannot stop. This is a different task from simply selecting an unequal pair of loads.

Understand the ratio

For example, 6 kg concentric and 18 kg eccentric is a 1

ratio, or 200% additional eccentric load. The same percentage at different absolute loads can create very different demands. This example explains the ratio; it is not a starting prescription.

Prepare the machine and athlete

1. Choose an exercise and establish the intended range and finish position.
2. Set concentric and eccentric loads independently within the machine's limits.
3. Review both speed settings after changing load. Increasing assisted load can automatically reduce assisted speed.
4. Practice at a manageable demand before progressing.

Use the Resistance Control Bar for load, speed, zero-position, and pulley settings. Labels describe line direction; how that maps to muscle action depends on the exercise.

Progress the session

Increase demand gradually while preserving movement control. For reactive exercises, consider whether the concentric phase remains fast enough for the intended goal. Avoid transferring a loading ratio between exercises without reassessing the absolute demand.

Related guides: Isokinetic strength training and ADA deceleration testing.

Source: Eccentric Training with Motorized Resistance.