What is the difference between active and passive modalities in therapy?

• A. Active modalities require patient effort (therapeutic exercise); passive modalities are applied by the clinician without patient effort (ice, e-stim, ultrasound).
• B. Passive modalities require patient effort.
• C. Both require patient effort.
• D. Passive modalities relieve pain without any therapy.

Answer: (A)

The main idea is the difference in who performs the intervention and how the patient is involved. Active modalities require the patient to actively participate—think therapeutic exercise, strengthening, balance, and functional tasks—because the goal is to build capacity, motor control, and transfer to daily activities through patient-driven effort. Passive modalities are applied by the clinician with little or no active effort from the patient, such as ice, heat, electrical stimulation, or ultrasound; these can help manage pain, reduce swelling, or prepare tissues for movement, but they don’t by themselves drive functional improvements without subsequent active work.

That’s why this statement is the best: it accurately distinguishes who does the work and the patient’s role. The other options imply the opposite or that passive modalities require effort, which isn’t how these therapies are defined, and they suggest passive techniques relieve pain without any treatment, which isn’t accurate because they are still therapeutic interventions conducted by a clinician.