PAMS increase tissue __________?

• A. Elasticity
• B. Strength
• C. Temperature
• D. Extensibility

Answer: (D)

Heating from physical agent modalities changes tissue properties to allow more stretch. When tissue temperature rises, collagen-rich tissues become more pliable and the viscosity decreases, so under a given load they lengthen more before reaching the same stress. This increased ability to lengthen is what we call greater tissue extensibility, which is why you see improved flexibility and range of motion after heating and stretching. The focus is on extensibility rather than strength or elasticity, and the temperature rise is the mechanism, not the property being measured.