MEASUREMENT OF STRENGTH & POWER USING VARIOUS TECHNIQUES

Question 1

Physiological and mechanical factors

Answer 1

Muscle structure
Joint Position
Joint velocity

Question 2

Muscle structure is made up of which variables

Answer 2

Fibre type

Architecture

Question 3

Joint position is made up of which variables

Answer 3

Moment arm

Muscle Length

Question 4

Joint velocity is made up of which varibale

Answer 4

Force velocity

Question 5

Different type of requirements in sports

Answer 5

Strength - powerlifting
Strength - speed
Speed - Strength
Speed - sprinting

Question 6

Why is strength related to sprinting?

Answer 6

Push off force from blocks

Question 7

Purpose of strength assesments?

Answer 7

Ability to distinguish between athletes at different levels

Indicator of ‘good’ performance

Correlation with athletic performance

Sensitivity to training adaptions

Injury prevention

Question 8

Strength assessment specificity

Answer 8

Testing conditions should imitate the movement/ activity and training conditions

Violation will result in data problems

Question 9

Specificity considerations

Answer 9

Type of movement
Velocity of movement
Posture
Joint position
Bilateral

Question 10

Isotonic strength testing

Answer 10

Isotonic = equal + tension
Anisometric - ‘non + equal + length’

Equipment
Free weights

Question 11

Strengths of isotonic testing

Answer 11

ecological validity

Question 12

Limitations of isotonic testing

Answer 12

One rm doesn’t provide scientific reason behind

Question 13

Force x Velocity

Answer 13

Power

Question 14

Vertical GRF

Answer 14

Centre of mass

Question 15

What has half back squat training correlated with

Answer 15

Sprinting performance

Question 16

Power and speed based tests

Answer 16

Types

• Slow ssc (>250ms) CMJ
• Fast ssc (<250ms) drop jump

Question 17

Assessment of leg extensors’ power

Answer 17

• Profiling
• Discriminative analysis
• Training adaptations

Question 18

Vertical jumping - mechanical and performance variables

Answer 18

• Impulse
• Take-off velocity
• Power
• Jump height (CoM)
• Rate of force development
• Speed index
• Reactive strength index

Question 19

How to calculate rate of force development

Answer 19

10% - 90%

Question 20

Isometric strength testing advantages

Answer 20

• Muscle group isolation
• Accurate and reliable
• Quantified and detailed biomechanics analysis

Question 21

Isometric strength testing limitations

Answer 21

• Specific joint position strength

- Difficult to elicit an (MVC) maximum voluntary contraction

Question 22

Force development calculations

Answer 22

Peak RFD - steepest point

Question 23

Definition of force development

Answer 23

Relationship with muscle architecture

Question 24

Isokinetic meaning

Answer 24

Constant velocity

Question 25

Isokinetic strength pros

Answer 25

Testing force velocity relationship

Question 26

Advantages of isokinetic testing

Answer 26

- muscle group isolation - maximal resistance in ROM - Quantification - correlated with performance - safety

Question 27

Disadvantages of isokinetic strength testing

Answer 27

not a real movement (need familiarisation) cannot match angular velocities during dynamic activities