Took Maxeh out to Whiteleaf yesterday on what was overall quite a nice ride. I definitely felt the difference of being 3-4KG lighter than my last ride and as you can see, many trophies.
https://www.strava.com/activities/279742585
My speed on the flat and also comfort & ability to ride relatively fast (for me in comparison) has improved loads and I can climb 'okay'. Aerobically I'm fairly fit and recover pretty quickly from high intensity efforts but my ability to continue up tough climbs is poor. As soon as lactate sets in my legs just eventually blow and begin to grind to a halt.
Second time up whiteleaf and I had to stop twice, once involving an involuntary lay down

where as Maxeh was able to keep going. After each stop, 1-2 minutes, I could spin quite happily for another 30/40 seconds and then seize up again like an old man.
I've done plenty of powerlifting (squats, deadlifts, bench etc) and lift as a primary form of exercise and prior to this I've come from a background of very high volume leg workouts involving a fair bit of pump & lactate work but this appears to have not carried over particularly well.
I made Maxeh suffer a bit on the flat to make up for being humiliated on Whiteleaf and comfortably put some respectable distance between us, several hundred meters.
I've been doing HIIT once a week on the turbo, 15 minutes of short sprints with a 5 min spin up & down before/after.
I'd like to get some lactate work in but don't have a great deal more time during the week.
Would it be wiser to just spend some time at a lower cadence in a higher gear and just sustain this/suffer for 10-15 minutes?
(I don't know if it's of any help but my MHR is around 178bpm with a resting HR of very low 30's. When riding and making good progress it sits around 145bpm, on a climb it's around 155-165bpm lactate begins to set in high 160's/low170's and I'm crippled at high 170's. - I do have mild asthma which interferes slightly on Whiteleaf it seems.)