Fundamental of Procedures - Isotonic exercises

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higher velocity = eccentric contraction levels off or slightly increases while concentric contraction decreases

How does velocity alter production of force

slow velocity = greater force with eccentric contraction

How does velocity alter production of force

increase dynamic strength, muscle endurance and power

Isotonic exercise is used to do what

only can overload the weakest point

Negatives of Isotonic exercises

requires training on proper completion for safety

Negatives of Isotonic exercises

can be inexpensive

Positives of Isotonic exercises

can be open or closed chain

Positives of Isotonic exercises

contraction against a maximal load produces more tension than an isometric contraction

Positives of Isotonic exercises

easy application

Positives of Isotonic exercises

multiple points get loads

Positives of Isotonic exercises

DOMS (keep load low acutely and progressively increase)

Precautions of eccentric contraction

increased stress on cardiovascular system (teach rhythmic breathing)

Precautions of eccentric contraction

max eccentric contraction produces greater force than max concentric contraction

What are force production variations of eccentric contraction

the resistance to change throughout the full ROM

What do variable loads allow

control a greater load

What does eccentric contraction do

easier to perform in acute phase

What does eccentric contraction do

greater force production

What does eccentric contraction do

greater resistance to fatigue by consuming less oxygen and fewer energy stores

What does eccentric contraction do

more efficient (less effort required)

What does eccentric contraction do

provide shock absorption during closed-chain activities

What does eccentric contraction do

same tension

What does isotonic mean

exercise carried out against a load (constant) does not change while the muscle shortens and lengthens

What is a isotonic exercise

tension develops as muscle is shortened when external force is applied

What is concentric

tension develops as muscle is elongated when external force is applied

What is eccentric

manual or mechanical resistance

What is isotonic exercise used with

usually include a component of each; most resembles functional use of muscle

Concentric vs Eccentric

load cannot be greater than what the weakest point of the muscle can lift

Constant vs Variable load

lifting weight, theraband, pushups (up phase)

Example of concentric exercise

lowering weight, release theraband, pushups (down phase), lowering to sit

Example of eccentric exercise


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