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Movement Analysis
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Basic analysis of movement can be done visually and should involve the following
A description of the actual movements which occur at the joints involved The plane(s) in which the movement occurs The muscles producing the movement The function of the muscles involved (agonists, antagonists, synergists & fixators) The type of contraction (isotonic -concentric or eccentric, isometric) The range of the muscle action (inner, middle, outer)
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Analysis of racket strokes
There are two phases to striking a ball with a racket, the preparatory phase and the striking phase
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Most actions are rotational in the transverse plane and longitudinal axis and the three joints concerned are the wrist, elbow and the shoulder The elbow is a hinge joint formed by the humerus and ulna. The shoulder is a ball and socket joint formed between the humerus and the scapula The wrist forms a condyloid joint between the ulna and carpal bones
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Preparatory Phase Joints involved Articulating bones Action
Agonist Muscle Wrist Ulna and carpal Radius and ulna Supination Supinator Elbow Humerus and ulna Extension Triceps brachii Shoulder Humerus and scapula Hori. hyper extension Posterior deltoid and latissimus dorsi
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Striking Phase Joints involved Articulating bones Action
Agonist Muscle Wrist Ulna and carpal Radius and ulna Pronation Pronator teres Elbow Humerus and ulna Flexion Biceps brachii Shoulder Humerus and scapula Horizontal flexion Pectoralis major and Anterior deltoid Trunk Rotation External obliques
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Assignment Divide in to 4 groups Analyze the movement given to you
Prepare a power point presentation regarding the movement analysis Each ppt, Maximum 20 slides Every member in the group should present Time allocated preparation 2 hours presentation 10min each student 2 ½ - 3 min
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Evaluation criteria The students will be evaluated on,
Presentation skills Content Slide show and attractiveness Relevance & accuracy for the topic
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Group A Movement; Sitting to standing
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Group B Movement; Lifting weight from floor to body
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Group C Movement; Drinking a glass of water
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Group D Movement; Stair climbing
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