Entertainment

TKO never comes in Ukrainian doc

“It’s their life to live. And they have my blessing. But when they fight, I always go out for a walk by myself.’’

That’s Nadeshda Uljanowana Klitschko speaking about her boxer sons, Vitali and Wladimir, who between them hold four world heavyweight belts.

She speaks out in “Klitschko,’’ Sebastian Dehnhardt’s documentary about the 6-foot-6 Ukrainian-born brothers, both of whom have doctorates but prefer to make a living being beaten up.

Dehnhardt combines family photos, talking heads and often brutal fight footage. The most compelling interview has nothing to do with boxing: The siblings’ father talks about being a first responder at the Chernobyl disaster in 1986. He developed cancer — and survived.

Despite such interesting moments, “Klitschko,’’ fawning and generic, is best left to ESPN.

In Russian, German and English, with English subtitles. Running time: 110 minutes. Not rated (violence). At the Cinema Village, 12th Street, east of Fifth Avenue.