What should you know about cybex ii isokinetic dynamometer?

A Cybex II isokinetic dynamometer measures muscle force during controlled movement to guide assessment and rehabilitation. A clinician positions and secures you, selects a safe speed and range, and compares performance between limbs or across visits when that information is clinically useful.

The machine uses resistance that adapts to the movement speed, allowing the therapist to assess force through a controlled range. Testing may examine a joint such as the knee or shoulder and can show patterns of weakness, fatigue or imbalance. It is a measurement tool, not a diagnosis by itself.

The therapist explains the task, checks your position and asks you to push or pull as instructed. Learn more about the [Isokinetic Dynamometer](/technology/isokinetic-dynamometer/) and how testing may fit a [Return-to-Sport Programme](/treatments/physiotherapy-and-rehabilitation/return-to-sport-programme/).

Wear comfortable clothing and tell the therapist about pain, recent surgery, swelling, dizziness or an area that feels unstable. Follow the warm-up and practice instructions rather than trying to produce force before the device is adjusted. Give consistent effort, but stop and report sharp pain, unusual symptoms or loss of control.

Results are interpreted alongside your history, examination and functional goals. The therapist may use them to choose exercises, adjust loading or decide whether more sport-specific tasks are appropriate. A single test should not be treated as permission to return to competition without considering movement quality and symptoms.

Tell the therapist immediately if testing causes sharp or escalating pain, a giving-way sensation, new numbness, sudden weakness, chest symptoms or light-headedness. Seek medical assessment for persistent swelling, worsening pain or a new loss of function after testing or exercise.

Ask what muscle groups and movements will be tested, how the results will change your rehabilitation, and whether the test is safe with your current injury or operation. Discuss how strength findings relate to walking, work or sport, and which milestones matter before progression.