Doctor Of Physical Therapy
The principles of resistance
Variation of the power of the muscles in
different parts of their range
Techniques of resisted exercises
Progressive resistance exercise
Uses of resistance exercise
Load OR resistance is given to a
muscle to increase muscle performance
(strength, endurance & power)
PRINCIPLES OF RESISTANCE
Load must exceed the metabolic capacity
of a muscle
Muscle is challenged to perform at greater
In strength training programs amount of
resistance applied to a muscle increased
In endurance training we focus on increase
time or number of repetition increase
(SPECIFIC ADAPTATION TO IMPOSED DEMAND)
Applied to all body system
This is the extension of the wolf’s law in which body
system adapts overtime to the stresses placed on
Helps therapist to determine the exercise prescription
Which parameters of exercise should be selected to
create specific training effects that best meet specific
functional needs and goals.
SPECIFICITY OF TRAINING
Also called specificity of exercise
Use to improve strength, power & endurance
Means if the muscular endurance require
more than the strength, the intensity &
duration of exercises should be geared.
The training is depend on the type , velocity,
joint angle & movt. Pattern of the exercise
The resistance is transmitted to gain the
strength & endurance.
Use for the patient who forget movt.
e.g. C.P child
VARIATION OF THE POWER OF
MUSCLE IN DIFFERENT PART OF
-Contraction takes place throughout the
range.( eccentric & concentric)
-increase the power of muscle
The muscle either shortens
concentrically from half way of its range,
or is lengthened by eccentric
contraction from fully contracted state to
-gain or maintain joint movt. In the
direction of muscle pull.
Concentric contraction from fully
stretched position to halfway range and
eccentric contraction from halfway
range to the fully contacted position.
- Muscles contract more forcefully.
Muscles neither reach to fully
contracted range nor fully stretched, but
moves only in between.
-maintenance of muscle tone
-and normal power.
Understanding the limits of the range of
motion of every joint.
Avoiding the joint positions that put the
anatomical structures of the joint at risk
“Is a method of increasing the ability of
muscles to generate force “
reduce risk factors associated with
osteoporosis as well as diseases such
as cardiovascular disease
USES OF RESISTED
Physical and mental health benefits that can be achieved through resistance
improved muscle strength and tone – to protect your joints from injury. It also
helps you maintain flexibility and balance and helps you remain independent as
weight management and increased muscle-to-fat ratio – as you gain muscle,
your body burns more kilojoules when at rest
greater stamina – as you grow stronger, you won’t get tired as easily
prevention or control of chronic conditions such as diabetes, heart disease,
arthritis, back pain, depression and obesity
improved mobility and balance
decreased risk of injury
increased bone density and strength and reduced risk of osteoporosis
improved sense of wellbeing – resistance training may boost your self-
confidence, improve your body image and your mood
a better night’s sleep and avoidance of insomnia
enhanced performance of everyday tasks.