Question

1. When attempting to develop power and strength for a dynamic movement (throwing. kicking. punching), the preferred method of training would be to perform strength development exercises isotonic isokinetic isometric isolateral 2. Which of the following muscles will contract to produce the trunk rotation to the right that is necessary for a left hand throw? 1) right external oblique 2) left external oblique 3) right internal oblique 4) left internal oblique a.1, 3 b.2, 4 c.2, 3 d.1, 4 3. Which muscles are responsible for the primary action of the humerus in the shoulder joint (glenohumeral) motion during the propulsive phase of the overarm throw? 1) anterior deltoid 2) subscapularis 3) latissimus dorsi 4) pectoralis major 5) posterior deltoid 6) teres minor a.4, 5, 6 b.1, 2,5 c.1, 4, 6 d.2, 3. 4 4 What are the prime movers (agonists) in giving top spin to the ball in a tennis stroke with strong forearm pronation? 1) pronation teres 2) pronator quadratus 3) triceps brachii 4) brachialis a.1.2.3 b 1,2,3,4 c.1,2,4 d.1, 2 5 Which of the following factors has the least effect on the development of momentum in a striking implement? a aerodynamics b length of lever c.mass of the implement d.speed of application of force

Answer 1

1. Ans- isokinetic

Isotonic training involves contraction of muscles against a constant load, such as weight lifting.

Isometric exercise is that in which muscular contraction occurs without movement of involved parts of the body.

In isokinetic contraction, too muscles change their length, as in isotonic, but they also produce movements of a constant speed.

Isolateral exercises help to increase strength and fitness of one side of the body.

2. Option [a] 1 and 3

The right external and internal oblique muscles will contract to move the torso to the right.

3. Option [c] 1,4 and 6.

The pectoralis major and anterior deltoid work together to internally rotate as well as horizontally abduct the humerus. Teres minor resists anterior humeral head translation, horizontal adduction and internal rotation.

4. Option [d] 1 and 2

The pronator teres and pronator quadratus work together to achieve pronation by pulling on the radius bone of the forearm.

5. Option [a] length of the lever

Mass and speed have a direct and major effect on momentum of a body. Aerodynamics will also affect the resistance that the object will face while moving through air, i.e. the amount of resistance from air will depend on the shape of the object.