The subject is placed away from the background by a decent distance. I believe this shot was accomplished with two specular lights.
One was placed facing the back-wall. It was positioned with distance between the wall and source, using barn doors (or something similar to control light.)
Another specular light is placed at close distance to the subject (assuming the camera is positioned at 6 o'clock) at 2 p.m. at a height slightly above center.
After careful review I am assuming one white board might have been used on the floor to help under-light the subject, but it was control as not to light the upper torso.
A reflector may have been used at a distance or another white card, positioned at 7 p.m. to help fill in the light on the subject to avoid the subject from becoming a silhouette.
Naturally, I think the light ration they were aiming for was 4:1, but wouldn't be surprised if the upper torso, face, and pants of the subject were altered using editing software. It seem the effect is more dramatic than what can be achieved without the help of digital technology.