Although the percentage correct of the 2-back test was not different from that of the 0-back test, the reaction time of the 2-back test was longer than that of the 0-back test.
The 0-back test was used to represent a lower mental-load task, which could be performed without use of working memory, while the 2-back test was used to represent a higher mental-load task, which could not be performed without using working memory [ 8].
As a fatigue-inducing mental task session, participants performed 0- or 2-back test trials for 30 min. The 0-back test was used to represent a lower mental-load task, which could be performed without the use of working memory, while the 2-back test was used to represent a higher mental-load task, which required working memory [ 10].
The 0-back test was used to represent a lower mental-load task, which could be performed without working memory use, while the 2-back test was used to represent a higher mental-load task, which could not be performed without working memory use [ 7].
The input of shear stress from the test was used to back-predict shear strain and pore pressure ratio, using rigid block on quasi-plastic layer procedures.
The sit-and-reach test was used to measure flexibility of the lower back, hips and hamstring muscles, and the back and hip joints.
The test is used to assess the isometric contraction of abdominal and back muscles, which provide lumbar stability.
Since our prediction was that exercise would reduce tumor formation, the one-tailed Student's t-test was used as a back-up only if the two-tailed t-test showed borderline significance.
