Growth Notes 2.docx

13 Pages

Kinesiology & Health Science
Course Code
KINE 3340
Nickolas Wattie

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Growth Notes 2 3142012 41400 PM Object Control SkillOverarm throw Preparatory phase all movements directed away from intended line of projection Execution movements in direction of throwFollow through movements following release of object Wild 1938 Movement progresses from anteriorposterior to horizontalBOS changes from stationary to shifting positionLangendorfer 1980Step 1 no preparatoryStep 2 ball beside head exaggerated elbow flexion Option 1 circulatory preparatory movementOption 2 lateral swing for preparatory Option 3 vertical lift of throwing armOption 4 arm moves back by grade 2 boys use thisThrowing stages1 posterioranterior direction feet dont move little trunk rotation2 more body rotation may step forward arms brought forward3 ipsilateral armleg action arm goes behind head and as it is thrown the same side leg steps forward4 contralateral movement little rotation of hips and spine stride forward for a side BOS 5 age at which 60 of boys and girls are able to perform at a specific developmental levelfactors that influence overarm throwing performanceinstructiono training program can help girls with foot actionpelvicspine rotation but nothing elseknowledgeinstructional cuescritical cuesball size o increase in ball size causes a performer to use a less mature pattern transition from one handed grasping to two handedangle of ball releaseo mature angle of release is 15 degreesgreatest gender difference for all FS is seen in throwingsuccess in distance throwing in boys is associated with hereditarysociocultural factorssuccess for distance in girls greater weight larger joint diameterbest predictor of throwing developmentGirls participation in sport presence of older brotherBoys fathers sport involvement fatherson skill playCatching action of bringing an airborne object under control by using hands and arms2 years old focuses on tosser and not ball static position late reaction5 yr can anticipate some can focus on tosser ballhands correct movements but are slow15 yr can predict ball flight preparatory sequence to catch smooth movementsStages of two handed catching 1 arms are straight out with palms upward and inward try to catch with chest2 elbows slightly flexed arms wrap ball against chest arms move before contact with ball3 sub 1chest as first contact sub 2attempts to catch with hands4 flexes elbows with arms in front to prepare hands used alone 5 60 problems occur when they must move toward the object factors the influence catchingball sizeball and background colorball velocitytrajectory anglevision and viewing timeinstructionknowledgeexperiencecatching on the runcatching with glove Striking body part or object used to project another objectStarts with ipsilateral then moves to contralateral
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