Page 16 - Chapter_12

Summary

1. Strength is the ability of a muscle or a group of muscles to apply maximum force against a resistance of a
single contraction.
2. Muscular strength is determined by following factors like volume of fast, twitch muscle fibres, phosphagen
storage, body weight, limb and muscle length etc.
3. Muscular strengths can be classified as isotonic strength and isometric strength.
4. Isotonic strength includes movement of muscles and it can be classified as maximum strength, explosive
strength and strength endurance.
5. Isometric strength is also known as the static strength as the muscle exerts a force against an immovable
object without considerably shortening its length.
6. Strength can be improved by isotonic, isometric and isokinetic exercises.
7. Endurance is the ability to rasist fatigue for a prolonged duration of time.
8. Endurance can be developed by a continuous training method, interval training method and the Fatlek
training method.
9. Speed is the ability to produce the greatest possible impulse at the shortest possible time.
10. Types of speed are reaction ability, movement ability, locomotor ability, acceleration ability and speed
endurance.
11. Speed can be enhanced by acceleration run method or pace our method.
12. Flexibility is the ability to display a wide range and amplitude of movements by the joints of an individual.
13. The two types of flexibility are active flexibility and passive flexibility.
14. Coordinative abilities are abilities that enable an individual to do various related activities correctly and
efficiently.
15. Circuit training is a type of resistance training that uses high intensity aerobics in produce muscular strength
and endurance.

A. Very Short Answer Type Questions 1 Mark (20 to 30 words)
1. What do you mean by sports training? (CBSE-2018)
2. What are isometric exercises?
3. What are isotonic exercises?
4. Define Flexibility.
5. Define strength.
6. What is dynamic strength?
7. What is static strength?
8. Define endurance.
9. What is explosive strength?
10. What is maximum strength?
11. Who is active flexibility?

16 Physical Education