Resisted Exercise Flashcards

1
Q

What are the three types of muscle fibres?

A

Slow
Fast
Intermediate

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2
Q

What are the features of slow fibres?

A
For endurance 
Red
High fatigue resistance
High capillary supply
Oxygen storage
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3
Q

What are the features of fast fibres?

A

For power
White
Bigger for increased force and tension
Lower capillary supply - anaerobic

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4
Q

What are the features of intermediate fibres?

A

Pink
Fast contraction
Anaerobic

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5
Q

Define muscle strength

A

The ability a muscle has to produce tension

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6
Q

Define muscle power

A

Maximum strength per unit of time

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7
Q

Define muscle endurance

A

Ability to sustain contractions over a period of time

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8
Q

Define strength

A

Ability to control forces produced to carry out functional activities

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9
Q

What factors does muscle strength depend on

A
Cross sectional area of muscle 
Structure of CT
Number of motor units 
Fibre type 
Lever size
Age and fitness
Cognition
Genetics
Type of contraction 
Muscle length
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10
Q

What are the different types of resisted exercise?

A
Patient own body weight - push ups
Manual resistance 
Pnf techniques 
Free weights 
Mechanical resistance
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11
Q

What are the three types of muscle work?

A

Isometric
Isotonic - concentric - accelerating
or eccentric - decelerating
Isokinetic - speed of limb

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12
Q

What happens to the sarcomere in outer range?

A

No overlap

No cross bridges formed

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13
Q

What happens to the sarcomere in mid range?

A

All myosin in contact with actin

Many cross bridges made

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14
Q

What happens to the sarcomere in inner range?

A

Not as many cross bridges

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15
Q

How much force is there with a concentric contraction that’s:

Slow
Fast

A

Slow contraction = high force
Fast contraction = small force

As cross bridges cannot form due to filaments moving too fast

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16
Q

What are the principles of strength training

A
Overload 
Specificity
Motivation
Learning 
Reversibility
Diminishing returns - will require a large effort after beginning where there is obvious improvement 
Age and gender
17
Q

Explain the overload principle

A

Rapid increase in strength to begin

Plateauing improvement with same load

Endurance increases only, no effect in strength if load is not progressed - c/r changes

Load must be increased for increased strength

18
Q

What are the stages of improving muscle strength?

A

6-8 weeks) motor learning
Performance improves
Strength is constant

10-12 weeks) increase in muscle strength (increase motor firing, increase motor units
Without increase in muscle size

12 weeks +) true hypertrophy
Increase in muscle size and strength

19
Q

How much force is there with a eccentric contraction that’s:

Slow
Fast

A
Slow = increased force
Fast = decreased force
20
Q

What is involved in muscle training?

A
Strength
Power
Endurance
Flexibility
Coordination
Skill
21
Q

How do you improve strength?

A

Increase resistance
Decrease reps

Exceed 80% of maximum strength
10 reps
3 x a week

22
Q

How do you improve power?

A

Increase reps and same time
OR
Same reps and decrease time

23
Q

How do you improve endurance?

A

Decrease resistance
Increase reps

Most positive impact when really impaired

24
Q

What are the two types of fatigue?

A

Peripheral fatigue - muscle tired

Central fatigue - c/r response

25
Q

What are the signs of fatigue?

A
Muscle quivering 
Holding breath
Red face
Pain
Decreased ROM
Altered speed 
Compensatory movements
26
Q

Contraindications of resisted exercise

A
Acute inflammation
Acute diseases
Pain
Severe c/r disease
Recent fractures 
Recent wounds
27
Q

What do you need to do when doing resisted exercise?

A
Warm up and cool down
Medical clearance
Practice regularly
Start slowly
Make appropriate and safe
Be aware of dangers 
Avoid max burst
28
Q

What should an evaluation look at?

A

Physical factors
Lifestyle changes
Health directed behaviours - medication levels?
Psychological and social outcomes

29
Q

What are the indications for resisted exercise?

A

Oxford scale 4/5