I’ve recently started to develop pain on outdoor rides (not indoor, even though the bike is the same). It is in the right side of my lower back.
This coincides with a slight discrepancy on my Assiomas: it’s always 50/50 or 51L/49R on the trainer, but is usually more like 52-53L/48-47 R on the road, and just spinning easy early in a ride can be as much as 55/45.
There’s obviously a muscular imbalance or postural issue behind it, and I find it hard to believe the back pain and power imbalance aren’t related (as the onset has been almost the same). But
- What is it? and
- Why am I only getting it outdoors?
Any guidance gratefully appreciated