hydrotherapy Flashcards
(43 cards)
definition of aquatic therapy
ATACP aquatic therapy association of chartered physiotherapist 2014
“at is a therapy program utilising the properties of water, designed by a suitably qualified physio specifically for an individual to maximise function which can be phy, psych or physiological. Treatments should be carried out by appropriately trained personnel, ideally in a purpose built and suitably heated aquatic therapy pool”
at versus hydrotherapy definition
terms used interchangably but aquatic therapy is ually active and involves exercises prescribed by a physio.
ht literally means water healing
definition of hydrotherapy pool
atacp 2014
a warm water pool designed for aquatic physiotherapy treatment and rehab. they are used to treat people post injury, surgery, or med condition”
heated to 35 degrees and hoist available
what properties of water exist that alter exersising?
buoyancy hydrostatic pressure dynamic forces eg drag viscosity refraction density
what is buoyancy
Archimedes principle states that buoyancy is an…
- upward thrust of water on immersed object in opposite direction of gravity
- the buoyant force is equal to the weight of displaced water that the object displaces
- amount of water displaced depends on the density of the object
what are the implications of buoyancy
-body weight feels less in water than on land
less loading on injured structures
(reduction in weight depends on immersion depth)
-buoyancy and weight are often not aligned and also tissue proportion or mass may not be equally distributed causes rotational effect
-need equilibrium between centre of buoyancy and center of mass
-joint unloaded
-flotation devices increases resistance
what is hydrostatic pressure
pascal’s law= fluid pressure is exerted equally on all surfaces of an immersed body
pressure is directly proportional to immersion depth and fluid density ie more pressure with depth
implications of hydrostatic pressure
- improves balance in water
- no risk of falling
- reduction in swelling and oedema especially in feet so beneficial for swollen joints
- increases blood flow
- decrease in pain perception
but can affect lung vol CI
what is density
relationship between mass and volume of an object
d=m/v
density increases with increased amount of dissolved substance eg sea water >dense
what is relative density and relationship to fat and bone
-is the mass of an object compared to that of an equal volume.
-determines how much of an object will sink or float
aka a cork 0.2 20% will sink
- water =1 therefore fat= 0.8 to water so floats but bone= 1.5-2 so sinks
hence body builder would sink as low fat
implications of density
-when remaining motionless people with low body fat will find it harder to float
-also air in lungs if lungs full then will float but if empty lungs sink
BREATHING TECHNIQUES
-ie use breathing to control float
what are dynamic fluid forces AND EQUATION
drag ( indirection of flow)
lift (at right angles to drag)
F=1/2 P V^2 C S
p=density, v= velocity, c coefficient of smootheness and orientation to flow, and s =cross sectional area exposed to flow
what are the types of drags
- form drag= frontal surface area and shape of body, larger the area the more the drag
- surface drag= (friction between surface of the body and molecule of water)
- wave drag= (waves at surface) deeper you go more drag, closer than .4m reduces the drag
implications of drag
- used for muscle strengthening and cardio training ie by creating resistance in the water, can create progression by manipulating speed
- high speed more resistance
- poor technique causes turbulence making exercises harder
viscosity what is it
- fluid’s resistance to flow and deformation
- depends on cohesion and adhesion of molecules in fluid
- reduces as temp increases
implications of viscosity
- supporting and stabilising effect
- weak patients may not seem as weak in water
- psychological benefits: allows patients to complete exercises that might not be able to on land
- weightlessness feeling can move more and control better
what is surface tension
-caused by attractive forces between molecules and atoms on a fluid surface
implications of surface tension
makes exercise at water surface more difficult
what is refraction and implications of it at
-when light enters the water it changes speed and if light enters an angle the change in speed causes the light beam to bend away from the original path
-angles alignment or joint motion look different
Implications: therapist may think patient performs better/ worse than they actually are
techniques used in aquatic therapy
- buoyancy to assist or resist
- floats used to suspend the patient or increase resistance
- creating turbulence to increase resistance ( wave drag)
- aerobic exercise incl. aqua jogging with belt.
prevalence of musculoskeletal disorders
Labour force survey 2015
7.5 million working days are lost anually from work related MSD’s
>200, 000 people report LBP at work annually
Waller et al 2009
80% of pop exerience LBP during their lifetime
Backcare 2016
healthcare cost to the UK= 2.8 billion direct
causes of lbp
nhs 2018
- cant always identify
- certain med conditions
- occupational accident
Exercise to treat clbp
NICE 2016
recommends group exercise programmes within NHS for people with a specific episode or flare up of LBP with/ without sciatica
or combined programme
evidence for exercise to treat msd’s
intervsen et al 2012/ van middelkloop 2011
exercise shown to reduce pain, disability and increase muscle function and strength for RA & clbp