STRENGTH Flashcards
Neuromuscular system?
The connections between the muscles and nervous system.
Power output?
The amount of work performed per unit measured in Watts.
Maximum strength?
The ability to produce a maximal amount of force in a single muscular contraction.
Explosive strength?
The ability to produce a maximal amount of force in one or a series of rapid muscular contractions.
Strength endurance?
The ability to sustain repeated muscular contractions over a period of time withstanding fatigue.
Dynamometer?
A device used to measure force production.
Plyometrics?
A series of explosive exercises such as hopping, bounding and jumping to improve the speed at which a muscle shortens.
Stretch reflex?
A protective mechanism which causes a muscle to concentrically contract in response to being overstretched.
Circuit training?
A series of exercise stations arranged in a specific order to usually work alternate muscle groups.
Muscle hypertrophy?
Increased muscle cell size
Muscle hyperplasia?
Increased number of muscle fibres.
Actin-myosin filaments?
Proteins which form the contractile units of skeletal muscle.
ATO (Adenosine triphosphate)?
Chemical energy stored as high energy compound and used as the immediate source of energy for muscle contraction.
What is strength?
Strength is the ability of the body to apply a force. It is a major component of fitness that is used for all forms of activities and is dependent on the efficiency of the neuromuscular system.
What are the 4 types of strength?
Static and dynamic strength
Maximum strength
Explosive strength
Strength endurance
What is Static strength?
A type of strength where force is applied against a resistance without any movement occurring.
How is Static strength created?
Created by isometric muscle contractions as there is no
change in muscle length.
What can Static strength be referred to as?
Can referred to as isometric strength and is important to
athletics who require holding balances – Gymnastics
What is Dynamic Strength?
A type of strength characterised by movement
Force is applied against a resistance and the muscles
change in length eccentrically or concentrically.
What is Dynamic Strength also known as?
Also known as power output (the amount of work performed per unit of time measured in
Watts W)
What is Max Stength?
Max strength is the ability to produce
maximal amount of force in a single
muscular contraction.
Represents the maximum weight that
can be lifted in one contraction – one rep
max (1RM).
Sporting example of Max Strength?
An Olympic weightlifter performing a deadlift or
single throw in judo as well as Rugby scrum
could be all examples of max strength.
What is explosive strength?
Explosive strength is the ability to produce maximal amount of force in one or a series of rapid muscular
contractions.
What is explosive strength also known as?
Termed also as elastic strength due to the use of the stretch-reflex mechanism where the muscle is
stretched before concentrically contracting.
The elastic recoil of the muscles adds to the force contraction.
A sporting example of explosive strength?
Athletes of an explosive nature would have to overcome a resistance rapidly while preparing the muscle for another contraction of equal force such as:
Sprinters, long jump, high jump,
sprinting down the wing in rugby or
hockey etc.
What is strength endurance?
Strength endurance is the ability to sustain repeated
muscular contractions over a period of time withstanding
fatigue.
Muscles must perform the same movements repeatedly
or apply a force against a resistance for an extended
period of time.
What is strength endurance good for?
Essential for sports such as rowing, swimming and
wrestling.
What effect does Cross-sectional areas on strength?
The greater the cross-sectional area of the muscle, the greater the strength.
What are Cross-sectional areas?
There is a maximum of between 16-30 newtons of force per square centimetre of muscles cross-section; therefore, the greater the cross sectional area the greater the force of contraction
What effects do Fibre type have on strength?
The greater percentage of FG and FOG fibres, the greater the strength over a short period of time.
What are Fibre types?
Fast-twitch fibres have large motor neurons forming larger motor units with rapid, high force contractions. The greater the recruitment of FG fibres, the greater the force of contraction
What effect does Gender have on strength?
Males have a higher strength than females