I started the low volume sweet spot a few weeks ago and it went pretty well until I got to workouts with intervals lasting 8-10 minutes long. My knees start to ache and feel bad - it’s not a burning like I get in the muscle. It’s not in the patella area as I’ve sometimes had in the past, but surrounding the joint.
The last week or two I’ve been doing longer slower rides and laying off the sweet spot and then tried a 30 minute vo2 max workout with 2 sets of 5x1 min intervals (Baird -3) and midway through the second set the knees started complaining again. I sat out one interval and then completed the last two without issue.
I have been riding MTB for about 2 years. Trainer Road on and off. 40 years old.
Does anyone have a similar experience? Theories? Advice?