- Heat
 
- Effects
- Increase
- Local vasodilation —> Increase blood flow —-> Increase capillary permeability, Increase supply oxygen and nuterient to the tissue —> Increase metabolism
 
 - Decrease
- Pain perception
 - Muscle tone
 - Muscle spasm
 - Gastrointestinal motility and gastric acid production when apply heat to the abdomen
 
 - Sedation and relaxation
 
 - Increase
 - Types
- Thermophore : Electric moist-heat pad
 - Hydrocollator : Gel filled cloth pack, apply with wrapped towel
 - Wax bath
 - Compress : Hot towels or cloths
 
 - General caution
- Temperature 
- Warm : 36 to 38 degrees Celsius
 - Hot : over 39 degrees
 
 
 - Temperature 
 - Contraindications
- Acute injury, acute inflamtion, acute infection
 - Circulatory pathologies
 - Sensory changes
 - Burns
 - Hypersensitivity to heat
 
 
- Cold
 
- Effects
- Decrease
- Vasocontriction –> decrease blood flow —> Decrease metabolism —> Decrease inflammation, Decrease swelling and edema
 - Decrease Pain
 - Decrease muscle spasm
 - Decrease temperature of the skin
 
 - Increase
- Increase blood viscosity
 
 
 - Decrease
 - Types
- Ice pack : Gel-gilled plastic packs, wrapping towel needed when applying the skin
 - Ice massage
 - Compresses
 
 - General caustion
- Caution the frosbite
 - Temperature
- Cool : 13 to 18 degrees Celsius
 - Cold : 0 to 12 degrees Celsius
 
 
 - Contraindication
- Raynud’s disease
 - Circulatory insufficiency
 - Sensory changes
 - Cold allergy
 
 
- Contrast
 
- Effects
- Increase in local circulation and venous return
 - Decrease edema
 - Increase tissue healing
 
 - General caution
- Ration of time for each application of heat and cold –> 3:1
 - Always end with a cold application