Reliability

The test is a reliable test because of the consistency from test 1 to test 2. The set up for both of the tests and the conditions are exactly the same. With both tests we have the students lie face down on the mats with their hands underneath their thighs. The students are told to keep their heads in a neutral (in line with their spine) position. The students accomplish this task by focusing their eyes (looking down) on the poker chips we supply for them to look at while they are performing the trunk lift. The student's partner then measures each of the two trunk lifts with a ruler in front of the student's chin.