hydrotherapy Flashcards
what are the physical properties of water
specific heat
thermal conductivity
buoyancy
resistance
hydrostatic pressure
what is water’s specific heat
4.19 J/g/°C
what is water’s thermal conductivity
0.000057 °C/cm
what does specific heat mean
amount of energy needed for a substance to inc temp of a material
what does thermal conductivity mean
ability to transfer heat
relate the properties of specific heat and thermal conductivity with water and air
water can retain heat 4x more and can transfer it 25x faster than air
how does water transfer heat
via conduction if no current
convection if may current
clinical appli of 0-18°C
very cold to cold
clinical appli of 18-26°C
cool - acute inflammation
clinical appli of 26-33.5°C
tepid - exercise; acute inflammation if unable to tolerate cold
clinical appli of 33.5-35.5°C
neutral warmth - open wounds, medically-compromised pts, dec tone
clinical appli of 35.5-37°C
mild warmth - inc mobility of burns
clinical appli of 37-40°C
hot - pain control
clinical appli of 40-43°C
very hot - inc tissue extensibility, chronic conditions
clinical appli of >43°C
should not be used
exp buoyancy of water
appli of archimedes’s principle and specific gravity - body immersed has an upward thrust equal to amount of fluid displaced
specific gravity of pure water
1
specific gravity of salt water
1.024 - easier to float
specific gravity of ave human body
0.974 but if exhale all air maging 1.1 so will sink
specific gravity of subcutaneous fat
0.85 - more fat more it will float