I train three times a week - as little as twice a week is enough if you're pressed for time.
My back problems gradually improved over two years of training. I had a disk that had slipped gradually over the previous several years. Exquisitely painful episodes 3-4 times a year. Certainly not helped by my weight and lack of muscle tone. After a year of lifting I noticed that I recovered from these episodes quicker, and that the intervals between them were longer. I think it's well over a year now since the last. Obviously, don't even think about lifting if you are currently suffering back pain.
I believe there is general agreement that any strength program will be based around low-rep sets of exercises that involve a large number of muscle groups. Typically squats, power cleans, dead lifts, overhead presses and bench presses. Rippetoe's Starting Strength book and DVD are an excellent introduction to these. Eventually (6 - 18 months) you will plateau and need to change program. I'm currently using Jim Wendler's 5/3/1 and so far am very happy with it, but a beginner will progress faster with Rippetoe.
If you don't mind some extra, unsolicited advice;
- start with much lighter weights than you think you can handle and aim for regular, small weekly increases - even a pound or two is fine and quickly adds up.
- Be prepared to end a session the moment you feel any discomfort in your lower back, and don't return until it clears up completely. I didn't do this at first and each time ended up unable to train for a fortnight.
- technique matters. While these lifts are nothing like as complex as the olympic lifts, there is still some technique that you need to learn for your safety, and also to allow progress to occur. If possible film yourself from time to time to check you're not developing bad habits.
My back problems gradually improved over two years of training. I had a disk that had slipped gradually over the previous several years. Exquisitely painful episodes 3-4 times a year. Certainly not helped by my weight and lack of muscle tone. After a year of lifting I noticed that I recovered from these episodes quicker, and that the intervals between them were longer. I think it's well over a year now since the last. Obviously, don't even think about lifting if you are currently suffering back pain.
I believe there is general agreement that any strength program will be based around low-rep sets of exercises that involve a large number of muscle groups. Typically squats, power cleans, dead lifts, overhead presses and bench presses. Rippetoe's Starting Strength book and DVD are an excellent introduction to these. Eventually (6 - 18 months) you will plateau and need to change program. I'm currently using Jim Wendler's 5/3/1 and so far am very happy with it, but a beginner will progress faster with Rippetoe.
If you don't mind some extra, unsolicited advice;
- start with much lighter weights than you think you can handle and aim for regular, small weekly increases - even a pound or two is fine and quickly adds up.
- Be prepared to end a session the moment you feel any discomfort in your lower back, and don't return until it clears up completely. I didn't do this at first and each time ended up unable to train for a fortnight.
- technique matters. While these lifts are nothing like as complex as the olympic lifts, there is still some technique that you need to learn for your safety, and also to allow progress to occur. If possible film yourself from time to time to check you're not developing bad habits.
Good luck - and have fun.