Vanneau's suggestion about glue exercises like (single leg) glute bridge as well as some other core exercises like plank and a little yoga has so far made a huge difference to lower back pain off the bike. Stretching on its own did almost nothing or only temporarily alleviated pain. Some tests also indicate that I don't really have super-tight hamstrings (doing a yoga forward lean after a round of greeting the sun I can pretty much fold in half) On the bike I am getting an inline seatpost to move the seat a little further forward after sliding around on my saddle to feel out different positions. Too far forward might not recruit the glutes enough (as someone posted a while ago), and it feels like too far back may over-recruit some of the muscles around the hip.
Vanneau's suggestion about glue exercises like (single leg) glute bridge as well as some other core exercises like plank and a little yoga has so far made a huge difference to lower back pain off the bike. Stretching on its own did almost nothing or only temporarily alleviated pain. Some tests also indicate that I don't really have super-tight hamstrings (doing a yoga forward lean after a round of greeting the sun I can pretty much fold in half) On the bike I am getting an inline seatpost to move the seat a little further forward after sliding around on my saddle to feel out different positions. Too far forward might not recruit the glutes enough (as someone posted a while ago), and it feels like too far back may over-recruit some of the muscles around the hip.