What is the fatigue index?
fatigue index is the term most often to describe the method for determining energy exhaustion during aerobic exercise. The index number indicates the speed at the athlete's performance. It can be used as an indicator of aerobic endurance athlete.
The normally determination of the fatigue index of the athlete is the test sprinting test. The athlete will warm up for about ten minutes and then give a three to five -minute break. Then six sprints will lead after 30 to 35 meters, with a ten -second break between each sprint. Times for each sprint are recorded.
If you want to determine the athlete's fatigue index, the first thing to determine is the power supply in the Watts of each sprint. This is determined by multiplying the sprint speed by the force of the sprint. The speed is determined by distributing the distance in meters at the time of the sprint.
To determine the strength of the sprint, the accelerumus is determined by the Ation, which is the speed divided by the time of sprint. Sprint acceleration is multiplied by athlete's weight in kilograms. This number equals the strength of the sprint. The fatigue index is located by deducting the minimum sprint from the sprint of maximum power and then by dividing the total time of all six sprints.
For example, an athlete, which weighs 75 kilograms, operates six sprints, each of which is 30 meters. Its times for these sprints are as follows: 1 = 4.95 seconds, 2 = 5.10 seconds, 3 = 5.31 seconds, 4 = 5.59 seconds, 5 = 5.74 seconds, 6 = 5.98 seconds.
The performance of the first sprint is determined by the sprint distance, 30 meters, divided by the time needed to start it, which is 4.95 seconds. This gives speed: V = 30/4.95 = 6.06. To find the acceleration of the sprint, the speed is divided into time: A = 6.06/4.95 = 1.22. The force equals the weight of the athlete multiplied by acceleration: F = 75 x 1,22 = 91.5. To find force, the force is multiplied by the speed: p = 91.5 x 6.06 = 554.49.
performance from the first athlete sprint is 554.49. Because it bYL her fastest run, it will also be its maximum performance.
Using these equations is the power for the second sprint 507.15, the third sprint is 449.18, the fourth sprint is 386.64, the fifth sprint is 356.5 and the sixth sprint is 316.26. The sixth sprint is its minimum performance. To find the fatigue index, the total time of all sprints, which is 32.67 seconds.
Fatigue index is then found by deducting 316.26 out of 554.49 and dividing the result of 32.67: FI = (554,49 - 316,26) /32,67 = 7,29. The fatigue index of this athlete is therefore 7.29.
Athlete with high fatigue index, which is something higher than 10, may have to function its tolerance of lactate. The lactate tolerance concerns the chemical compound produced by the body during exercise. During strenuous energy exercises, muscles produce more lactate than can be removed, so high lactate tolerance allows greater endurance.