CH 5: Strength, power, measuring strength Flashcards
What is the ability of a muscle to generate force (maximum force) by a single muscle or related muscle group?
Strength
What is the ability to exert force under a given set of conditions defined by body position, body movement by which force is applied, movement type, and movement speed?
Strength
What is the maximal force a muscle or muscle group can generate at a specified velocity?
Strength
What is the muscle force exerted by a muscle or group of muscles to overcome resistance under specific set of circumstances?
Muscle strength
What is the capacity of a muscle or group of muscles to generate forces?
Muscle performance
What is the work produced per unit time or the product of strength and speed?
Muscle power
What is the ability to sustain forces repeatedly or to generate forces over a period of time?
Muscle endurance
What has been described as the ability of the neuromuscular system to produce, reduce, or control forces, contemplated or imposed, during functional activities in a smooth, coordinated manner?
Functional strength
What is used to describe the result or product of a force exerted on an object and distance the object moves?
Work
Force X Distance =
Work
What can be described as linear or rotary?
Force
What is described as force=mass X acceleration
Linear force
What is described as force= mass X angular acceleration?
Rotary force
What is the ability to cause rotation movement?
Torque
Force X Perpendicular distance from axis of rotation?
Torque
What is defined as the time rate of doing work?
Power
Force X Velocity
Power
Force X (distance/time)
Power
Work/time
Power
What is defined as a vector that describes displacement?
Velocity
What are the methods that strength can be measured?
- MMT
- Cable tensiometry
- Dynamometry
- 1RM lift
- Isokinetics
- Functional strength assessment
What is an isometric method of muscle testing that is designed to measure muscle strength requiring no equipment other than examiner’s hands?
MMT
What is used for isometric measuring of muscle’s strength?
Cable tensiometry
What provides the advantage of versatility for recording force measurements at virtually all angles of a joints ROM and may be more sensitive for grading muscle strength above grade 4?
Tensiometry
What are used to quantify grip strength?
Hand-held dynamometers
What is used to evaluate back strength tension?
Standing back dynamometer
What involves the evaluation of broad skills necessary to perform complex movements vs traditional methods that focus on isolated joint testing?
Functional ability testing
What are some functional ability assessments?
- One leg hop for distance
- Single leg triple hop for distance
- Timed single leg hop (on minitrampoline)
- Vertical jump
What testing is particularly important when dealing with athletes who may be returned to activity too soon after rehabilitation because of inaccuracies in assessment of abilities?
Functional ability testing
