TOKYO — Nintendo’s president vowed Thursday to stick to the company’s old ways and refused to resign or cut product prices despite the video game maker’s dismal earnings.

Instead, Satoru Iwata said the company planned to enter the health care industry.

Mr. Iwata did not give details of what he called his “quality of life” business plans, except that it would not be a wearable device. Mr. Iwata promised to disclose details later this year.

The Kyoto-based Nintendo already offers fitness games.

Mr. Iwata displayed his typical stubbornness in brushing off criticism about how the maker of Super Mario and Pokemon games should update itself for the era of smartphone and other mobile devices. The popularity of such devices has been drawing consumers away from consoles devoted to games, but Nintendo has resisted changing its business to incorporate tablets and smartphones.

“Nintendo has value because it is different from others,” Mr. Iwata said at a Tokyo event for analysts and reporters, a day after he and other top executives took a pay cut for the company’s poor performance.