منابع مشابه
Does Fatigue Alter Pitching Mechanics?
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BACKGROUND Elbow pain and elbow injuries are common in youth baseball players. It is not clear whether pitching experience and/or age creates biomechanical differences at the elbow and whether these differences place an athlete at greater risk. HYPOTHESES (1) Youth pitchers will have differing elbow kinematics with regard to flexion/extension, internal/external rotation, and pronation/supinat...
متن کاملCharacteristic ground-reaction forces in baseball pitching.
Overhand throwing requires contributions from and interaction between all limb segments. Most previous investigations have concentrated on the throwing arm itself, yet poor mechanics at the arm may originate in the lower extremities. Multicomponent ground-reaction forces of both the push-off and landing limbs were measured in six collegiate and one high school level baseball pitchers. Full body...
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The direct sales encounter has rarely been described in anything resembling its full contextual richness. Further, attention to this encounter has been largely confined to the primary retail sector of the economy. In this paper, a perspective drawn from linguistic anthropology is used to examine the persuasive rhetoric of market pitchers as it unfolds in a culturally significant setting. The se...
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ژورنال
عنوان ژورنال: Nature
سال: 2004
ISSN: 0028-0836,1476-4687
DOI: 10.1038/nj6976-759a