In the past I started this thread regarding my lower back “fatigue”. I didn’t want it to sound like I had a vertebrae or nerve injury. It feels like fatigue… my lower back muscles just get tired and start screaming at me.
Is this the same for you?
I still have lower back fatigue sometimes. I’m still not sure what exactly causes it as there are so many variables involved. I think it’s a combination of things.
Not sure if you’re riding muni or street, so some of this might not apply, but consider trying these things:
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Stretch well before riding.
I should probably do this more consistently myself. But when I do I often do arm/leg raises, bridge, roll my back on a yoga ball, roll on my back holding my knees on a mat, bend over and touch my toes (can’t actually reach that far). -
Try to remember to sit up straighter when you ride.
Tougher trails make it harder for me to control this. Take advantage of the easier sections and stretch your back and shoulders while you ride, when you can. -
Lower your tire pressure.
I’m not 100% sure, but I think a softer tire on bumpy trails helps remove the need for so many micro balance adjustments that can lead to back fatigue. At times I’m running my "35-65psi " at 25psi or less.
I hope you find something that works for you!