Table 6 Item-scale correlations of the Theory of Planned Behavior items and constructs

Instrumental attitude

1

0.42**

0.39**

0.13

0.13

0.20*

Beneficial - harmful

0.84**

0.31**

0.33**

0.11

0.08

0.17

Worthwhile - worthless

0.82**

0.30**

0.30**

0.06

0.20*

0.19*

Good - bad

0.86**

0.22**

0.33**

0.12

0.06

0.13

Relaxing - stressful

0.73**

0.52**

0.31**

0.15

0.07

0.16

Affective attitude

0.42**

1

0.33**

0.18*

0.19*

0.25**

Enjoyable - boring

0.53**

0.64**

0.25**

0.23*

0.20*

0.10

I feel sick

0.13

0.73**

0.11

0.04

0.08

0.07

Satisfied - unsatisfied

0.30**

0.79**

0.37**

0.14

0.14

0.38**

Subjective norm

0.39**

0.33**

1

0.04

0.01

0.33**

Think

0.36**

0.23*

0.78**

0.07

-0.01

0.32**

Want

0.32**

0.28**

0.83**

0.05

0.11

0.33**

Expect

0.37**

0.24**

0.79**

-0.01

0.05

0.35**

I am under pressure

0.22*

0.27**

0.75**

0.02

-0.08

0.11

Perceived behavioral control

0.13

0.18*

0.04

1

0.28**

0.26**

Difficulty of doing physical activity

0.13

0.13

0.03

0.88**

0.23*

0.23**

Capability of doing physical activity

0.11

0.18*

0.04

0.89**

0.27**

0.23**

Self-identity

0.13

0.19*

0.01

0.28**

1

0.23*

Sporty

0.13

0.19*

0.01

0.21*

0.76**

0.26**

Healthy

0.07

0.11

0.12

0.31**

0.74**

0.16

Physically active person

0.10

0.09

0.04

0.15

0.75**

0.20*

Couch potato

0.07

0.15

-0.13

0.16

0.67**

0.04

Intention

0.20*

0.25**

0.33**

0.26**

0.23*

1

How likely

0.11

0.18*

0.25**

0.24**

0.19*

0.85**

I expect to do

0.23**

0.24**

0.31**

0.21*

0.20*

0.83**