Table 3. Principal component analysis and reliability results.
Rotated Component Matrix.

 

Component

 

1

2

3

4

5

6

7

8

1. Affiliation:

               

like the instructor

.816

             

like the challenge

.705

             

enjoy individual aspect

.651

           

.484

learn new skills

.641

             

enjoy being part of a club

.564

             

like to have fun

.469

             

2. Friendship:

               

be with friends/social

 

.841

           

have something to do

 

.673

     

.492

   

meet new friends

 

.670

           

3. Fitness:

               

to stay in good physical shape

   

.824

         

exercise and physical fitness

   

.805

         

4. Reward/status:

               

want to be popular

     

.714

       

like to feel important

     

.714

       

release tension

   

.518

.626

       

like the rewards

 

.481

 

.514

       

do something I'm good at

     

.470

   

.452

 

5. Competition:

               

like to compete

       

.891

     

win and enjoy competition

       

.755

     

6. Situational:

               

like the facilities

         

.597

   

parents or close friends want me to take part

         

.560

   

want to gain status or recognition

     

.454

 

.467

   

7. Skill Development:

               

improve martial arts skills

           

.832

 

get to higher level

           

.565

 

8. Undeterminable:

               

like to travel

             

.819

like excitement

           

.479

.524

Eigenvalues

9.3

2.4

1.8

1.5

1.4

1.4

1.2

1.0

Variance

33.3

8.5

6.3

5.4

5.1

5.0

4.1

3.6

Cronbach’s alpha

.86

.76

.77

.76

.84

.80

.77

.73