Table 4 Result of factor analysis

Knowledge towards exercise (9 items)

Exercise is necessary to maintain good health

0.547—0.846

Exercise can be aerobic or anaerobic

0.791—0.929

Aerobic exercise include jogging, swimming, biking, running, brisk walking

0.727—0.907

Exercise should be done continually throughout life for good health

0.644—0.879

Regular exercise maintaining a normal blood pressure range

0.798—0.931

Regular exercise increasing and maintaining muscular strength and endurance

0.811—0.936

Regular exercise increasing and maintaining flexibility

0.785—0.927

Doing regular exercise is good for my fitness and health

0.980—0.993

I should exercise regularly for my health

0.899—0.966

Attitude towards exercise (7 items)

I feel that I have no time of my own and daily exercises take away my valuable time

0.935—0.978

I feel that exercise takes away most of my energy

0.985—0.995

I use little soreness from previous exercises or being tired as an excuse to keep away yourself from further exercises exercising more

0.980—0.993

I give up on exercising owing to a difficulty of sticking to a schedule

0.933—0.977

Household chores such as dishwashing is an exercise good enough to maintain health

0.975—0.992

I need someone to keep reminding me to exercise

0.891—0.963

Exercise does more harm than good

0.934—0.978

Participation in exercise (3 items)

In a typical week, on how many days do you walk for at least 10 min continuously to get to and from places?

0.932—0.977

How much time do you spend doing vigorous-intensity sports, fitness or recreational activities on a typical day?

0.960—0.987

How much time do you spend doing moderate-intensity sports, fitness? Or recreational (leisure) activities on a typical day

0.979—0.993

Exergame experiences (4 items)

Did you know what is exergames? Such as Xbox 360 and Nintendo Wii

0.935—0.978

Did you try to play with exergames?

0.856—0.951

Have you seen anyone played exergames?

0.789—0.928

Has anyone suggested you to use exergames?

0.706—0.900