Autonomic Responses of Amateur Child Athletes to Aerobic Exercise Test

20 Meter Shuttle Run Test: Subjects run distance of 20 meters round trip. Running speed is monitored at certain intervals with help of a tape recorder that gives a signal. Subjects start running when they hear first beep and must reach other line(one foot must cross the line) by second beep. When they hear second signal, they return to starting line. The speed, which is slow at beginning, gradually increases every 10 seconds. The subject adjusts his/her pace so that he/she is on the other line at the second signal. If subject misses one signal and catches second signal, test continues. If subject misses two signals in row and doesn't reach line at other signal, test is terminated. At end of test, aerobic power values are calculated from VO2max estimation table in ml/kg/min according to number of sit-ups run. At end of test, marks obtained by athlete are calculated and VO2max value of subject is calculated in ml/kg/min from evaluation table.