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LCDP – Mark Chapman
Distance = sum of
1) horizontal distance that shot is in front of
board at release,
and

2)

horizontal distance it travel...
1)

2)

(17cm men; 11cm women – 1987 world’s)
governed by body position at release

Governed by the speed, angle and heigh...
Most important?
Speed of release
Angle of release
Height of release
Speed of release – determined by magnitude
and forces applied to shot and distances over
which these forces act
Angle of r...
Distance

Distance prior to
Release

Distance after Release

Height of
Release

Position

Speed of
Release

Forces Exerted...
Techniques used are all about trying to increase
the speed of release
O’Brian (1950’s) – linear or glide technique
Rotatio...
Speed of left foot touchdown very important
Time between right foot landing in middle of
circle and left foot touchdown is...
Reverse – why do it?
Length of applied force

Difference between two techniques – rotational
in a better delivery position
Distance determined by speed, height and
angle of release
+
Aerodynamic factors that influence flight
Speed and angle of r...
Height of release governed by athlete’s body
position
Height of release of minor importance
compared to speed and angle of...
Magnitude of forces exerted by air governed by
Speed of release
Angle of release
Best between 35-40◦ for 45-60m thrower

A...
Distance

Height of Release

Aerodynamic factors

Position

Attitude
angle
Speed of
release

Forces Exerted

Angle of
Rele...
Distance governed by
Speed, height and angle of release
Speed of release is determined by throwers
ability to repeatedly g...
You can only apply force to the Hammer, with both feet
on the ground.
Appreciable force and acceleration can only be appli...
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Throws Network 2014

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Biomechanics of the Heavy Throws

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Transcript of "Throws Network 2014"

  1. 1. LCDP – Mark Chapman
  2. 2. Distance = sum of 1) horizontal distance that shot is in front of board at release, and 2) horizontal distance it travels in the air
  3. 3. 1) 2) (17cm men; 11cm women – 1987 world’s) governed by body position at release Governed by the speed, angle and height at which shot is released
  4. 4. Most important? Speed of release Angle of release Height of release
  5. 5. Speed of release – determined by magnitude and forces applied to shot and distances over which these forces act Angle of release – fixed by magnitude, direction and distance of forces. Optimum angle is always less than 45◦. Height of release – governed by athlete’s body position.
  6. 6. Distance Distance prior to Release Distance after Release Height of Release Position Speed of Release Forces Exerted Angle of Release Distance Air Resistance
  7. 7. Techniques used are all about trying to increase the speed of release O’Brian (1950’s) – linear or glide technique Rotational technique Initial position very different, final position very similar
  8. 8. Speed of left foot touchdown very important Time between right foot landing in middle of circle and left foot touchdown is 0.10-0.15secs for elite
  9. 9. Reverse – why do it? Length of applied force Difference between two techniques – rotational in a better delivery position
  10. 10. Distance determined by speed, height and angle of release + Aerodynamic factors that influence flight Speed and angle of release determined by magnitude and direction of forces exerted on implement, and distance over which these forces are applied
  11. 11. Height of release governed by athlete’s body position Height of release of minor importance compared to speed and angle of release Discus in flight subjected to forces exerted by air Can have significant effect on distance
  12. 12. Magnitude of forces exerted by air governed by Speed of release Angle of release Best between 35-40◦ for 45-60m thrower Angle of attack could be a possible problem especially with young athletes
  13. 13. Distance Height of Release Aerodynamic factors Position Attitude angle Speed of release Forces Exerted Angle of Release Distance Wind velocity Angular velocity of implement
  14. 14. Distance governed by Speed, height and angle of release Speed of release is determined by throwers ability to repeatedly get “ahead” of the hammer into positions where they can exert forces to increase speed of hammer.
  15. 15. You can only apply force to the Hammer, with both feet on the ground. Appreciable force and acceleration can only be applied when the Hammer head is travelling downhill. i.e. high to low point. In the turns, the Hammer and arms are held out straight in front of the chest, they do not deviate from there, to maintain maximum radius. In the turns, the feet are always pointing in the same direction.
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