Originally Posted by
rsbob
Speaking only for myself, when I first start ramping up my riding in the Spring, my lower back aches. It is probably because it has lost its strength in the off season. Keep at it, and the pain will probably diminish as your back gets stronger and back into shape. Doing planks and other back strengthening exercises is a good idea as well.
Same for me. I rarely ride more than an hour or so on the trainer, so when spring hits, my back notices the first couple of 2+ hour rides I do. But, it adapts quickly and then I'm fine.