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Spatial Frame of Reference

Spatial Frame of Reference. X - parallel to ground - forward [+] and backward [-] directions - perpendicular to Y direction Y - parallel to ground - left [+] and right [-] directions - perpendicular to X direction

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Spatial Frame of Reference

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  1. Spatial Frame of Reference • X - parallel to ground - forward [+] and backward [-] directions - perpendicular to Y direction • Y- parallel to ground - left [+] and right [-] directions - perpendicular to X direction • Z- perpendicular to the ground - upward [+] and downward [-] directions

  2. Linear Motion motion in a line path 1. Rectilinear straight line path (drop ball) 2. Curvilinear curved line path(discus flight) Rotary Motion rotates due to a fixed point A. Fixed Point axis of rotation B. Radius of Rotation distance from any point toaxissee page 27 Figure B.4 b Linear and Rotary Motion

  3. PLANES and AXES • PLANE- a flat surface that divides body or segment • AXIS- a pin or axle about which a body or segment rotates • Movement occurs in a PLANE about an AXIS that isto that plane

  4. Sagittal Plane Movements about M-L axis • Dorsiflexion- lifting foot’s upper surface toward shin bone • Plantar Flexion- depressing foot, pointing toes/foot away from shin • Flexion- a bending, decreases angle between adjacent bones • Extension- a straightening, increases angle between adjacent bones • Hyperextension- bending joint beyond straight anatomical position • Transverse Flexion- abduct shoulder/hip to parallel then move arm/leg medially (inward) • Transverse Extension- from a position of Transverse Flexion, move arm/leg laterally (outward)

  5. Abduction- moving limb away from mid-line of the body Adduction- moving limb toward the mid-line of the body Depression- moving shoulder /jaw downward from an elevated position Elevation - moving shoulder /jaw upward ( shrug shoulders) Lateral Flexion- bending the trunk laterally away from mid-line Radial Flexion- moving handlaterally outward towards radius Ulnar Flexion- moving the hand medially toward ulnar bone Transverse Abduction- flexshoulder/hip until arm/leg reaches parallel to ground then move arm/leg laterally outward Transverse Adduction - from transverse abduction position, move segment medially inward Frontal Plane Movements about A-P axis

  6. Eversion- moving foot so thatsole is turned laterally outward Inversion- moving foot so that sole is turned medially inward Lateral Rotation- turningbone outward about its long axis Medial Rotation- turninginward of bone about its long axis Transverse Rotation- rotate trunk to left or right Pronation- rotating hand medially so palm faces posterior Supination- rotating hand laterally so palm faces anterior Protraction- moving either shoulder or chin forward (reach) Retraction- moving either shoulder or chin back(“square” your shoulders) Transverse Plane Movements: longitudinal

  7. Anthropometrics • Size, Shape, Proportions • Stoutness - Ponderal Index • ECTO - thin • ENDO - fat • MESO - thick/muscular

  8. You Can’t Judge a Book by It’s Cover • Average NBA player height 6’7” [2m01] • Since 1970 in NBA:Muggsy Bogues 5’3 1m60 1987-2001Earl Boykins 5’5 1m65 1998-2006 Spud Webb 5’7 1m701985-1998Greg Grant 5’7 1m70 1989-1996Keith Jennings 5’7 1m70 1992-1995Monte Tower 5’7 1m70 1977Charlie Criss 5’8 1m73 1978-1985Calvin Murphy 5’9 1m75 1970-1983Yuta Tabuse 5’9 1m75 2005Nate Robinson 5’9 1m75 2006

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