Singapore, March 12 -- Just when we thought the reign of the muscle-bound action hero was over, this week, two of them head two major movies. Dave Bautista, 51, plays a secret agent in the comedy My Spy, and Vin Diesel, 52, is a reanimated soldier in the superhero movie Bloodshot.

Is it 1989 all over again?

Because of late, the hulking action hero has been in decline.

Actors like Arnold Schwarzenegger, Sylvester Stallone, Jean-Claude Van Damme, Dolph Lundgren and Steven Seagal defined action cinema in the 1980s and 1990s.

Those decades were a special time for actors from the worlds of bodybuilding and martial arts because of the videotape boom. In non-English-speaking populations with no access to cinemas, an actor with spectacular ...