Table 3: Problem-based learning scale (PBL) scores of subjects seated on chair and ball.

Participation Comprehension Cooperation Knowledge
Chair Ball Chair Ball Chair Ball Chair Ball

Mean 3.23.82.93.6 33.72.93.6
SD 0.40.90.370.54 00.80.370.54
SE 0.060.150.050.08 00.120.050.08
-value0.001.61.851.6

< 0.05 level of significance

SD: standard deviation; SE: standard error; -value: -test scores.