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Abstract:
MICHAEL JORDAN=92S VERTICAL JUMP. =20
Krugh J, LeVeau B. University of North Carolina at Chapel Hill, Chapel =
Hill, NC.
PURPOSE: The purpose of this study, which was part of an advanced =
master=92s motion analysis class project in 1983, was to determine =
Michael Jordan=92s maximum vertical jump.
=20
SUBJECT: Michael Jordan=20
METHODS: Surface markers: Left lateral malleolus, left femoral =
epicondyle, left greater trochanter, left pelvic crest, and right distal =
phalanges of digits 2 and 3 of the hand.
Tasks (in order) were:=20
Vertical reach while standing flat-footed - baseline
Vertical reach during a jump from standing
Vertical reach during a jump from running
Vertical reach during a 1 hand dunk=20
Vertical reach during a 2 hand dunk
All tasks, except baseline vertical reach were done with free swing of =
the upper limb(s). Equipment / instrumentation: Camera, lighting, =
markers, meter stick, and standard basketball. Location: Fetzer =
Gymnasium, University of North Carolina at Chapel Hill.
DATA ANALYSIS:
Distance measurements were analyzed by comparison to a meter stick in =
view of the camera. Displacement measurements of reach (pelvis) involved =
measurement of vertical height to the tip of fingers 2 and 3 (pelvis) =
during a task minus vertical height to the tip of fingers 2 and 3 =
(pelvis) during bilateral flat-footed stance. Velocity measurements were =
analyzed by dividing vertical height distance traveled divided by time =
taken for the tasks. A VanGuard Motion Analyzer was used to analyze =
motion frame by frame.
RESULTS:=20
Maximum measurements:=20
Vertical reach while standing flat-footed 93.67 in.
Floor to pelvic crest while standing 49.00 in.
Vertical reach displacement during a jump from standing 35.93 in.
Vertical displacement of the pelvis during a jump from running 38.07 in.
Vertical velocity during a jump from running 701.00 o/sec.=20
Vertical reach displacement during a jump from running 45.76 in.
Vertical reach displacement during a 1 hand dunk 41.70 in.
Vertical reach displacement during a 2 hand dunk 40.93 in.
During the vertical reach from standing, push from the floor was with =
both feet. During the vertical reach during a jump from running, push =
from the floor was with one foot and momentum of the body, two upper =
limbs, and one lower limb was used to the maximum.=20
CONCLUSION / CLINICAL RELEVANCE: Maximum displacement for vertical reach =
was achieved with a jump from a running start, a 2 hand dunk, a 1 hand =
dunk, and a jump from standing, respectively. This is consistent with =
use of momentum of the body and limbs to assist with the vertical =
displacement. Michael Jordan=92s vertical jump ability during several =
tasks provides a standard with which athletic achievement by others can =
be compared.
MICHAEL JORDAN=92S VERTICAL JUMP. =20
Krugh J, LeVeau B. University of North Carolina at Chapel Hill, Chapel =
Hill, NC.
PURPOSE: The purpose of this study, which was part of an advanced =
master=92s motion analysis class project in 1983, was to determine =
Michael Jordan=92s maximum vertical jump.
=20
SUBJECT: Michael Jordan=20
METHODS: Surface markers: Left lateral malleolus, left femoral =
epicondyle, left greater trochanter, left pelvic crest, and right distal =
phalanges of digits 2 and 3 of the hand.
Tasks (in order) were:=20
Vertical reach while standing flat-footed - baseline
Vertical reach during a jump from standing
Vertical reach during a jump from running
Vertical reach during a 1 hand dunk=20
Vertical reach during a 2 hand dunk
All tasks, except baseline vertical reach were done with free swing of =
the upper limb(s). Equipment / instrumentation: Camera, lighting, =
markers, meter stick, and standard basketball. Location: Fetzer =
Gymnasium, University of North Carolina at Chapel Hill.
DATA ANALYSIS:
Distance measurements were analyzed by comparison to a meter stick in =
view of the camera. Displacement measurements of reach (pelvis) involved =
measurement of vertical height to the tip of fingers 2 and 3 (pelvis) =
during a task minus vertical height to the tip of fingers 2 and 3 =
(pelvis) during bilateral flat-footed stance. Velocity measurements were =
analyzed by dividing vertical height distance traveled divided by time =
taken for the tasks. A VanGuard Motion Analyzer was used to analyze =
motion frame by frame.
RESULTS:=20
Maximum measurements:=20
Vertical reach while standing flat-footed 93.67 in.
Floor to pelvic crest while standing 49.00 in.
Vertical reach displacement during a jump from standing 35.93 in.
Vertical displacement of the pelvis during a jump from running 38.07 in.
Vertical velocity during a jump from running 701.00 o/sec.=20
Vertical reach displacement during a jump from running 45.76 in.
Vertical reach displacement during a 1 hand dunk 41.70 in.
Vertical reach displacement during a 2 hand dunk 40.93 in.
During the vertical reach from standing, push from the floor was with =
both feet. During the vertical reach during a jump from running, push =
from the floor was with one foot and momentum of the body, two upper =
limbs, and one lower limb was used to the maximum.=20
CONCLUSION / CLINICAL RELEVANCE: Maximum displacement for vertical reach =
was achieved with a jump from a running start, a 2 hand dunk, a 1 hand =
dunk, and a jump from standing, respectively. This is consistent with =
use of momentum of the body and limbs to assist with the vertical =
displacement. Michael Jordan=92s vertical jump ability during several =
tasks provides a standard with which athletic achievement by others can =
be compared.
