The Physiology Of Endurance -- Part 2

[@peterashford838]

Many thanks for these great presentations Scott which are reinforcing what I've been reading in TFTNA. With the time difference here in the UK so glad they are available as catch ups. Keeping me both motivated and in check as I gradually return to full exercise and training through an extended Transition phase. 😀

[@DharminderSingh]

Wonderful presentation, probably the best training video I’ve seen for anybody that is interested in improving their endurance. Thank you!

[@hikerJohn]

Bookmarked so I can watch it again . . . How do we know where our Aerobic Threshold is and how close to it should we train? I assume it will rise with training. My Polar settings says it's 145 and I've never had DOMS after hiking 20 miles with an *average* heart rate of 140. I have no idea where my anaerobic threshold is yet but Polar has it at 167. Because I hike (and jog) hills, I can never train at a steady state so I hope an *average* HR is OK with 80% being below 145. Polar says it's TEMPO training with wide swings from the bottom of zone 2 to the middle of zone 4 on my favorite training trails but 80% is below 145 bpm I'm still aerobic deficient because I have to walk up most hills and I'm 68 years old. That hardest part of training is to stay injury free and not over stress the joints from running down hill. Ive been training while on a keto diet for 5 years. In that 5 years Ive had pulled calf muscle a few times from running up steep hills. Shin splint once in 2019, achilles tendonitis for 6 months in 2019 and patellofemoral pain syndrome (last year) that lasted 6 months. These have slowed my progress but I'm injury free right now other than small niggles here and there that I done feel while training.

[@Ollieoopbigboy]

These presentations are amazing. So informative and in-depth. Thank you!!

[@jesseshaver2262]

My nose breathing and conversation pace is about 20-25 beats higher than my lab tested aerobic threshold (2mmol lactate, and where fats cross with carbs). Why would this be? My assumption is due to growing up and everything I did was “go hard”/high intensity, so I just adapted to it in some way. Would really appreciate some insight. Am doing lots of walking now to fix this!

[@Levi_Allen]

That is the same for me

[@evokeendurance4964]

@jesseshaver & @Levi_Allen Try a heart rate drift test and see how that heart rate correlates to HR and 2mmol lactate. You can also ask a detailed question in our forum: evokeendurance.com/forum/

[@jesseshaver2262]

Is anaerobic threshold defined by crossing 5mmol lactate production?

[@johnwatson2820]

Not an expert, but short answer is no. The way I've understood how it's determined is you draw 2 asymptomatic lines on your lactate / heart rate chart. Where those 2 lines meet is where your lactate threshold will be. A bit fuzzier than aerobic threshold

[@bmp713]

Excellent presentations but I am baffled why you barely mention the heart. It is "the engine", and according to research accounts for up to 80% of VO2 max. Michael Joyner, Stephen Seiler and many others talk about this. They often say the muscles can't use what the heart can't deliver, and that higher intensity limits stroke volume adaptations because of decreasing chamber filling. I would love to hear your take on how the different zones effect the heart and cardiovascular system. Why do you barely even mention the heart, which is the most important part of aerobic fitness?

[@GeoffreyHiggs]

Most often I'm hearing aerobic threshold called LT1 and anaerobic threshold called LT2

[@nofadin]

thats what he said