Rather than building strength it was about building muscle bulk.
The Sun
They don't increase muscle bulk easily, but tend to be hypermobile, with too much movement at each joint.
Times, Sunday Times
But it could also radically enhance the capacity of athletes to build muscle bulk.
Times, Sunday Times
It also creates flu-type symptoms that make patients feel persistently tired, losing appetite, weight and muscle bulk.
Times, Sunday Times
We are more interested in muscle bulk.
The Sun