Tommy is a 6-year-old boy that will not eat anything
Target injury: tendonitis in right wrist (extensor carpi radialis longus and extensor carpi radialis brevis), caused by repetitive and forced movements required in his profession Specific movement of exercise: radial and ulnar deviation (frontal plane with AP axis) of right wrist with a dumbell , with elbow flexed and forearm pronated on a fixed horizontal plane (table), and palm pointing medially. Ideal technique – mechanical description: Wrist Position: the patient’s elbow flexed and forearm pronated on a fixed horizontal plane with palm pointing medially. The movements performed within a limited and controlled range. The wrist holding the dumbbell should move in a slow, controlled abduction/adduction motion and hold the up and down position for about 5 seconds before moving again in order to lengthen the tendons and increase their elasticity. The right thumb should be curled firmly around and positioned just under the upper bumper of the barbell where it attaches to the bar. Potential Errors during exercise: 1. The client may increase the range of movement outside the parameters of the task. He may move his wrist in a more prone or supine direction instead of a lateral position. 2. The client may increase the speed of the upward and downward movement without holding the positions. 3. The client may not hold the barbell in the correct position between his thumb and fingers. What specific biomechanical variables (e.g., peak knee flexion angle after touchdown) are important to examine in order to detect the common errors listed above? There must be at least one variable listed for each error. Consider such types of variables as elapsed time and linear and/or angular position, displacement, velocity, and acceleration. For each variable listed, you must state the type of variable (e.g., flexion angle, vertical acceleration), the associated body segment, joint, or object (e.g., foot, knee, ball), and the instant or period of interest (e.g., at ball contact, peak after touchdown). Keep in mind that, unless you include a way to measure them in E3, you won’t be able to examine forces or torques.
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