I found an article intended for children of the time in “Ultra Seven Pictorial” as above.
Let me translate it as below:
“So popular! Playing the role of Ultra Seven. Questions to Mr. Koji Uenishi.
The secret of the star appearing in “Ultra Seven” !
Q.1: Your real name?
Koji Uenishi. Just the same as my stage name.
Q.2: What is your height and weight?
172 cm in height; 68 kg in weight.
Q.5: Can you tell us about any memories of childhood?
Let me see…
I dived in the ocean and speared fishes.
I crafted the spear myself…
It was great fun.
Q.6: What is your favorite sport?
Ski, baseball, equestrian art…
I do any sport.
Q.7: What is your favorite food?
I’m very much fond of meat.
But I eat anything.
I have no dislikes for food.
Oh, no. Really.
Q.8: What is difficult in playing Ultra Seven? How do you build your physical strength?
It is most difficult in playing how to wear expressions.
To build strength, I try to get a lot of nutrition and to do exercises such as baseball and bodybuilding as much as possible.
Q.10: Who do you respect?
I think he’s a respectable person both as a human and as an actor.
I want to become such a person as Mr. Mifune.”