Cryotherapy and Thermotherapy Effects on Muscle Strength

At what temperature does vasodilation occur or with longer durations of cooling in cryotherapy?

50°F

How long must cooling be maintained to sustain vasodilation?

35°F for more than 15 minutes

What happens to nerve conduction velocity after 5 minutes of cooling?

decreased

What effect does 5 minutes of cold application have on isometric muscle strength?

increased

What is the initial effect on muscle strength after cold application?

Muscle strength will decrease in the first 30 minutes, then increase.

What is the recommended treatment time for distal extremities in cryotherapy?

15 minutes or less.

How long can 5-10 minutes of cold application control pain?

1 hour or longer

What temperature is associated with reduced spasticity in cryotherapy?

20°C

What temperature causes blockage of the neuromuscular junction in cryotherapy?

5°C

What significant temperature change occurs after 30 minutes of cooling?

A significant temperature drop

How does the warming of cooled tissues compare to the cooling of warmed tissues?

It takes longer for cooled tissues to warm than for warmed tissues to cool.

What is the definition of mild heating in thermotherapy?

less than 40°C (104°F).

What is the definition of vigorous heating in thermotherapy?

40-50°C (104-113°F).

What can temperatures greater than 104-113°F or 40-50°C cause?

tissue damage and burns.

How does nerve conduction velocity change with temperature in thermotherapy?

increases by 2 meters/sec for every 1.8°F increase.

What temperature can reduce spasticity in thermotherapy?

108°F (42°C).

What happens to muscle strength in the first 30 minutes of thermotherapy?

In the initial 30 minutes, strength decreases; after 30 minutes up to 2 hours, it recovers and increases.

What is required to increase tissue elasticity in thermotherapy?

6-8°F increase (104-115°F) for 5-10 minutes.

What is the effect of surface application of heat on blood flow?

There is little to no blood flow change with surface application of heat, as increases are directly related to levels of exercise.

What is the initial heating time for Hydrocollator Packs?

3-5 minutes.

What is the temperature range for paraffin in thermotherapy?

117-123°F.

What is the temperature range for dry heat in avidotherapy?

113-117°F.