He did not always exude the physical power of the great Pittsburgh Steelers machine. s technical department, but the aims of each often competed and it proved too much for just one person. Weaknesses Lowry’s back in time for the playoffs, but we don’t quite know how healthy he is. t will be fascinating to see how long he can ‘maintain the rage’,” says Penfold, “what you also find is that players develop a fitness capacity over each season, so that the effort required to get through a season becomes less and less as they become accustomed to the physical demands needed and their body develops both an adaptation and resilience to these stresses.