I've got a slightly dodgy back but a round of golf has never aggravated it - until I start swinging badly as I get tired. Sounds like a few lessons may be in order (unless hi sname is Luke someone or other...

 I wouldn't call the average game of golf a very stressful or calorie reducing exercise, although if you are bad like me forget walking 7km's - it's more like 10km with all the lost balls and zig zag golf across the course LOL.