donrhummy said:
I know but if I can't even reach high speeds for 1 minute, how can i expect my legs to have the ability to put out speeds that are higher at all? (Not sure I'm explaining that properly)
Yep, that's the logic that sucks a lot of folks into make ya puke minute long anaerobic intervals. Problem is it just doesn't hold up. Sure you'll learn to get your bike up to high speeds for a minute or so, but that fitness doesn't translate to longer efforts since you need to rely on completely different energy delivery systems for those longer efforts. If you want to do hard shorter efforts to bring up your
sustainable top speed then make those efforts 3 to 5 minutes long which will train your ability to produce power at VO2 Max pace. That sets the high end of your aerobic capabilities or your
aerobic ceiling bring that up over time and you have more room to continue raising your longer term threshold power and speed. VO2 max work is painful both physically and mentally and 3 minutes much less 5 feels real long when you do them at the correct intensity. But if you really want to bring up your sustainable speed with short intense efforts, these are a better bet.
Are you sure I'll do better with easy riding in between?
If you can actually hold threshold pace which is basically time trial pace for the duration or very close to it then no, you don't need the breaks. Most folks take the breaks so they can focus their efforts and give their all for each attempt. If you don't need the breaks then fine, but I know I sure do if I want to hold consistent power for all three of my 20 minute L4 efforts.
...I'm using a HRM so i know if my effort wanes at all since it alerts me when I fall below the 85% mark.
yes, and no. HR has a lot of
momentum IOW, it takes a while to get your HR up to the correct zone while applying constant power and then it doesn't drop instantly when you back the power off. If you do keep the power constant HR tends to drift or continue to rise all the way to the end of the effort. That lag at the beginning of the interval and drift to the end are problematic. It means you can't gauge off of HR for the first five to 6 minutes of a longer effort and if you try to cap your HR at some preset limit you end up backing off on power to hold your HR to a given ceiling. This became real clear to me when I started training with a PM but continued to wear the HR strap.
I've attached a screenshot from a typical 20 minute SST effort. Notice how it takes nearly a third of the interval for HR to hit the mean(red line at top) and that HR continues to drift upwards all the way to the end. Also note that the HR doesn't drop instantly when the power drops, even when I coast and put out no power at the end of the interval where it takes 32 seconds to drop back to the mean and longer to drop out of zone. All those things make HR a poor gauge of interval effort. If I didn't have a PM I'd go back to paying attention to perceived exertion (RPE) and trusting that over HR. FWIW I trained religiously with HR for two decades and wondered why my results were so spotty. I have a better idea of what was happening now that I can see power and HR side by side.
...Can you explain more why it'd be better to do this? I mean, there are easier blocks during my long ride since I hit downhills and straight aways every now and then (and have to stop at lights, etc). How will I aerobically benefit by cutting the efforts into smaller blocks?
Maybe you can't. In your earlier post you said you "don't really worry too much about pushing speed" on this ride. I'm just saying the same thing Wiredued is, you need some intensity to encourage fitness adaptations and just getting miles isn't the most time efficient approach. If you're already pushing tempo where you get your effort and breathing up during parts of this ride then that's all I'm suggesting. If not it will be a better use of your time than just covering miles.
...Yeah, unfortunately I don't really have time for any more riding. I could maybe add a 30 minute ride somewhere but that's probably it. If so, would that be of benefit and what should I do in that workout?
The basic rule of thumb is to raise intensity if you can't train as much or as long during each session. 30 minutes is hardly worth the time of getting into bike clothes. If you have a trainer I'd say get on it for 30 minutes, do 5 minutes of warmup, one 20 minute L4 effort and 5 minutes of cooldown. That's about the best bang for your buck if you don't have much time. It's not much fun to sit on a trainer but there's no junk miles and you get a lot of training for the time invested. You could try the same approach outside, just try to get to a steady uninterrupted stretch of road or hill quickly, then do a good 15 to 20 minute steady threshold effort then cool down and go home. It's not great but it beats 4 days off a week. The body definitely needs rest after hard workouts, but too much rest and most of us get "blocked up" and need a loosen up ride just to get ready to train again.
Good luck,
Dave