Reaction Time: The Ruler Drop Test by Sara Mohamednour on Prezi - Stimuli are the changes in your environment that your body reacts to. - The functions of the nervous system is to receive stimuli, transmit stimuli to nervous centers, and initiate a response. -Even though stimuli travels quickly, your body does not react instantly.
Careful measurements of fitness can help to improve performance and ability. Below are some of the tests that are used to measure different elements of health-related fitness and skills-related fitness. Testing speed To measure speed the time taken to do a short sprint of between 30-50m is taken. Runs any longer than this will bring in the element of muscular endurance.