Predicting performance Potential for Sprinters


Overview of Performance Prediction

1. What makes a sprinter?
2. Speed testing methods
3. How to determine the 30 fly time
4. Predicting 100m - 200m - 400m performance potiental
5. Tests for Power and Strength and what they tell us.
6. Predict this athletes potential.
7. How would you train this athlete?

What makes a sprinter:
1. Speed
        Stride length
        Stride Rate (frequency)
2. Strength
3. Power
4. Core Strength


Speed testing methods:
Athletes: 2 efforts use best time - performance in spikes - with wind

X   20 m Acceleration zone   X    30 meter timing zone    X

Speed Performance Predictions
30 meter fly test for max Velocity
Methods:
1. Speed trap (photo light sensors)
2. Video tape ( 1 frame = 1/30th of a second)
Set up camera, so you can see both cones without panning the camera
Record athlete, count the total number of frames from in to and out of the 30meter zone.
Divide the number of frames by 30.
Exp: 108/30 = 3.60 seconds
3. Handed time (stopwatch)
       stand far enough back where you can see the torso of the body cross between
      the cones on both in and out zones.
                 Record time and add .18 seconds for reaction time to adjust for photocell
      Timing or video taping differences.

30 Meter fly time

3.60 seconds
 
step 1: Record the athletes fastest effort
  step 2: subtract competitive factor = .12
              gives a performance time of 3.48 sec.

  Step 3: Calculate Average velocity

Velocity = Distance / Time
   
Velocity = 30 meters / 3.48 sec.  =  8.62 m/s

100 meter Dash Prediction:


  Step 1:
Calculate time = distance / Velocity
   Time =
100 meters / 8.62 m/s = 11.60
  Step 2: Add the acceleration factor
   
Time =  11.60 + 1.1 = 12.70 seconds
Athletes performance predictor for 100 meters is 12.70  (handed timed)
  Convert to FAT by adding reaction time (18 seconds is average)
   FAT time = 12.88 seconds

200 meter Dash Prediction:

 
Step 1: Calculate 100 meter average Velocity
   
Velocity = distance / time
   
100 meter velocity = 100m/ 12.7s = 7.87 m/s
  Step 2: multiply 100m velocity by 98.3%
   7.87m/s X .983 = 7.74 m/s - this is the 200meter velocity
  Step 3:
Time = Distance / Velocity
   
200 meter time = 200m / 7.74 m/s = 25.84 sec (hand timed)
   FAT = 25.84 + .18 = 26.02 seconds

400 meter Dash Prediction:
 
Step 1: 200m Velocity X 90% = 400m Velocity
   7.74m/s X .90 = 6.97m/s (400m Velocity)
  Step 2: Calculate 400 meter Time
   
Time = Distance / Velocity
   400 meter time =  400m / 6.97 m/s = 57.39 sec.
   FAT = 57.39 + .18 = 57.57 seconds

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