As I mentioned last time, finding a suitable exercise for my quads is a bit of an issue. The problem is my knees. I think this probably goes back to when I had a motorbike accident about 30 years ago.

The left knee is the worst. It's fine for normal getting around. However if I stand on my left leg and attempt to do a squat then it starts to twinge as soon as the degree of bend away from a straight leg reaches about 45 degrees. So the normal weight training exercises for the quads such as squats and lunges are out of the question and leg extensions also seem to set it off. In particular I don't want to risk damaging my knees further as, at the moment, they are fine on the rowing machine. It's hard to do cardio without fully functioning legs.

So, at the moment I am doing partial one leg squats as shown on this page. I do them with a 10kg dumbell held on the side that's not over the step and I do three sets of 15 reps. For the step I use a Reebok Stepper (bought from eBay for £5.00, well pleased with that) on its lowest setting. It's not ideal but its better than nothing.