Which statement about heat and tissue extensibility is true?

Which statement about heat and tissue extensibility is true?

• A. Heat increases tissue extensibility and ROM
• B. Heat decreases tissue elasticity
• C. Heat has no effect on tissue properties
• D. Heat damages tissues

Answer: (A)

Heating raises tissue temperature, which makes viscoelastic tissues more compliant. As temperature increases, the extracellular matrix becomes less viscous and collagen fibers can slide past each other more easily, allowing greater stretch before resistance rises. This leads to an acute rise in range of motion because the stretch is tolerated more readily and passive resistance to movement is reduced. It’s a temporary change that supports better stretching, rather than a permanent alteration in tissue structure. The idea that heat decreases elasticity, has no effect, or damages tissue isn’t accurate when heat is applied safely within recommended guidelines. Proper heating (not excessive) can improve extensibility and ROM, especially when combined with stretching.

Heating raises tissue temperature, which makes viscoelastic tissues more compliant. As temperature increases, the extracellular matrix becomes less viscous and collagen fibers can slide past each other more easily, allowing greater stretch before resistance rises. This leads to an acute rise in range of motion because the stretch is tolerated more readily and passive resistance to movement is reduced. It’s a temporary change that supports better stretching, rather than a permanent alteration in tissue structure. The idea that heat decreases elasticity, has no effect, or damages tissue isn’t accurate when heat is applied safely within recommended guidelines. Proper heating (not excessive) can improve extensibility and ROM, especially when combined with stretching.