Typically, playing about 60-65% forehand and about 35-40% backhand will allow you to cover the table best. However, for some of my students, I give some flexibility as each player/style/age/conditioning/body type is unique. Because the forehand zone is larger, most players practice forehand footwork or full-table footwork. I have rarely seen players practicing backhand footwork.
During the last 10 years, I have really struggled with back injuries, even to the point of being bedridden. Today, I would like to make a few suggestions to you, so that you can avoid hindering your tt game with back problems.
In table tennis, every drill should have a purpose. One distinction that needs to be made is the difference between training and warm-up. When you see professional players warming-up at tournaments, they might do some forehand, backhands, and a simple footwork drill. That might be about it at tournaments. However, their daily training routine might look drastically different. Here are a couple thoughts on this concept.