2.4.3. Exercise Fun
A numeric rating scale was used to measure the subjective level of exercise fun. The following four items were rated on a scale from 0 to 10: (1) Exercise is fun; (2) Exercise made me feel good; (3) Exercise relieved stress; and (4) Exercise made me feel happy. The total score ranged from 0 to 40 points, with higher scores indicating a higher level of exercise fun.