In a break test, what is the examiner doing?

In a break test, what is the examiner doing?

• A. The examiner applies maximal external resistance to break the muscle's contraction.
• B. The examiner applies no resistance and evaluates movement passively.
• C. The examiner uses gravity to assist the movement.
• D. The examiner applies some resistance to determine effort.

Answer: (D)

In a break test, you measure strength by challenging a muscle that is already contracting with external resistance until the hold breaks, so you can see how much effort the muscle can sustain in that static position. The examiner applies resistance to overcome the voluntary hold, and you adjust the resistance to find the point where the muscle can no longer maintain the contraction. This is an isometric assessment—the limb doesn’t move through range. It’s different from passively evaluating movement, using gravity to assist, or having the patient initiate against resistance. The idea of applying some resistance to determine effort fits the break-test approach, because you’re aiming to determine how much the patient can hold against opposition.

In a break test, you measure strength by challenging a muscle that is already contracting with external resistance until the hold breaks, so you can see how much effort the muscle can sustain in that static position. The examiner applies resistance to overcome the voluntary hold, and you adjust the resistance to find the point where the muscle can no longer maintain the contraction. This is an isometric assessment—the limb doesn’t move through range. It’s different from passively evaluating movement, using gravity to assist, or having the patient initiate against resistance. The idea of applying some resistance to determine effort fits the break-test approach, because you’re aiming to determine how much the patient can hold against opposition.