Heart Rate Training: Zone 4/Threshold training?

amandaeve
amandaeve Posts: 723 Member
edited December 4 in Fitness and Exercise
I recently bought a heart rate monitor, and after tracking several work outs I am surprised to find that I naturally spend more time in the anaerobic/threshold zone than the other zones. On average, about 30% of a typical workout is spent in the 4th zone, with the runner up being zone 2 (fat burning) at 25%. The percentage of time spent in zone 4 is about the same whether it be a 5-hour bike ride or 1 hour at the gym. It’s not clear to me what it means to spend so much time in that 4th zone- What are my advantages now knowing that I am strong in that zone? How can I use this knowledge to my benefit?

Replies

  • Springfield1970
    Springfield1970 Posts: 1,945 Member
    edited October 2016
    Have you found your own personal max heart rate or are you using generic equation?

    For example if you have a high heart rate like me for my age, my zones are different than the norm, so I'm not actually in a high a zone as it seems.
  • JenHuedy
    JenHuedy Posts: 611 Member
    The basic theory I've read is that you get more endurance adaptation at Zone 2, more anaerobic/speed adaptation in Zone 4. Zone 3 is kind of the junk zone. There's adaptation, it's just not optimized.

    The training I used when I went by heart rate was 80/20. 80% in Zone 2, 20% in Zone 4. Worked great for my half marathon! I greatly exceeded my expectations, even with training at 600 ft elevation and racing at 6,000.
  • NorthCascades
    NorthCascades Posts: 10,968 Member
    How did you set up your zones? (The best way to do it is as a % of your lactate threshold HR. To find it, ride for 30 minutes at the fastest pace you can maintain, and take your average heart rate over the last 20 minutes of the exercise.)
  • Springfield1970
    Springfield1970 Posts: 1,945 Member
    I hear that most top athletes nowadays use 80/20 rule. I still spend far too much time running in the higher zones but I'm a junky. Cycling on the other hand, is lower zones.

    I still think it's a good idea to find your own max with a heart rate monitor, we are all different, and it would be a shame to base all your training on skewed zones.

    Joe Friel has lots of info on zones, it's really interesting.
  • amandaeve
    amandaeve Posts: 723 Member
    I did a heart rate test using my heart rate monitor and an app. I assume that's more accurate than a generic equation, but less accurate than a professional test.
  • amandaeve
    amandaeve Posts: 723 Member
    @NorthCascades -I'd like to try that, but I have no idea where I can ride for a full 30 minutes without stopping in Seattle! Maybe a vacation is in order...
  • NorthCascades
    NorthCascades Posts: 10,968 Member
    amandaeve wrote: »
    @NorthCascades -I'd like to try that, but I have no idea where I can ride for a full 30 minutes without stopping in Seattle! Maybe a vacation is in order...

    You're in Seattle?

    Shoot me a private message and I can recommend some routes, both within city limits and out of town away from traffic.

    But for starters if you cross Madison heading south, you can ride pretty hard almost all of the way along Lake Washington Blvd to Seward Park, then you have your choice of routes. I really enjoy the south half of the Lake Wash Bike Loop.

    In the meantime, take the zone analysis you get with a grain of salt because there's probably room for improvement.
  • amandaeve
    amandaeve Posts: 723 Member
    @NorthCascades - I get an error when I try to pm you, not sure why. I've done Lake Washington Blvd a bit, though usually south to north for some reason. I think it will take me several tries to do this test since I have no clue what the fastest pace I can maintain is!
  • kcjchang
    kcjchang Posts: 709 Member
    edited October 2016
    Google TRIMP & Banister impulse response model. The problem with HRM is that it cannot distinguish the intensities above lactate threshold. Your HR stays at max but you may be at threshold, VO2 max, anaerobic, or neuromuscular. There's a big physiological difference. Zone 3 or tempo is not necessary junk. The problem is always training there. It's a no man's land, not hard enough to stimulate much growth and too hard to let one rest. That said, it's the bulk percentage that one spend in a race, sportive, etc. Training to extend it, fatigue resistant, is a necessary evil to establish one's base in order to sustain training at higher intensities. The saying is "make your hard day, hard and easy day, easy." What's missing is "have a long tempo day to tie everything together at the end of the week".
  • BusyRaeNOTBusty
    BusyRaeNOTBusty Posts: 7,166 Member
    I use the 20min method, and then uses these zones, so technically I have 6 zones.

    http://lwcoaching.com/power-level-heart-rate-zone-calculator/
  • sijomial
    sijomial Posts: 19,809 Member
    amandaeve wrote: »
    I did a heart rate test using my heart rate monitor and an app. I assume that's more accurate than a generic equation, but less accurate than a professional test.

    That was my experience, max HR test on a bike in the gym reached a slightly lower number than a proper VO2 max test in a sports science lab. Three days of exercise induced asthma was additional confirmation it was a maximal effort....
    My max was 10bpm higher than the very simplistic 220-age guideline.
  • 777cbr
    777cbr Posts: 15 Member
    One thing a lot of people don't take into account is that LSD training doesn't work if you don't put in the hours. Polarized training only works when you use the easy days to recover. If you are truly able to hammer out zone 4 rides day in day out that says to me you are recovering enough to be able to do this. I am guessing this isn't the case because you say that you have to stop quite a bit in the areas where you ride. Every time you stop you are recovering. The bottom line is performance. When you ride the same routes, are you faster? all things being equal. That is the only measurement that matters when it comes to training. Or you are having more fun. ;) To me these are one and the same.
  • NorthCascades
    NorthCascades Posts: 10,968 Member
    amandaeve wrote: »
    @NorthCascades - I get an error when I try to pm you, not sure why. I've done Lake Washington Blvd a bit, though usually south to north for some reason. I think it will take me several tries to do this test since I have no clue what the fastest pace I can maintain is!

    Don't know why it didn't work. Mainly I wanted to PM you because I didn't want to post ride files that start and end at my front door in an open forum. But I was going to post the Lake Wash Loop rides and it sounds like you already know that one. :smile:

    Honestly I've always had reservations about using this kind of test to find your LTHR and you just explained why. It's testing your ability to pace yourself, as much as it's testing your threshold. You get better at taking the test and it can be a valuable skill to have depending on how you ride. But I feel like it's less accurate than a blood test or even an HRV app.
  • NorthCascades
    NorthCascades Posts: 10,968 Member
    amandaeve wrote: »
    I recently bought a heart rate monitor, and after tracking several work outs I am surprised to find that I naturally spend more time in the anaerobic/threshold zone than the other zones. On average, about 30% of a typical workout is spent in the 4th zone, with the runner up being zone 2 (fat burning) at 25%. The percentage of time spent in zone 4 is about the same whether it be a 5-hour bike ride or 1 hour at the gym. It’s not clear to me what it means to spend so much time in that 4th zone- What are my advantages now knowing that I am strong in that zone? How can I use this knowledge to my benefit?

    We all geeked out on how to set your zones and didn't bother to answer the stuff you want to know. Sorry.

    Using an HRM is as much art as science. It'd be neat to see the HR chart. It'd be one thing if you spend the first 30 % of your ride in Z4 and then tapered off after that, vs you constantly moving in and out of Z4. The first one would be fatigue, the second one is more like a cyclist in a hilly place.

    Here are some ways you can use your HRM to your benefit:

    (1) For pacing. Riding a bike is harder at 175 bpm than it is at 100 bpm, so you can't do it as long. If you pay some attention to the numbers while you ride for a while, you'll get a sense for how long you can stay in each zone. My instinct is to ride really hard when I approach a hill and build up momentum coming in, then push until I run out of gas and limp up to the top; if I pay attention to the numbers I'll start slower and finish in good form, not out of breath. Same thing on a longer ride on flat ground, sometimes dialing the intensity down by 10 bpm will help you a lot an hour later.

    (2) Avoid bonking. The "fat burning zone" doesn't mean anything to most people but if you're doing 5 hour rides, you need to fuel them mostly with fat and only burn glycogen when you really need to. (This is just long-term pacing.)

    (3) Targets for workouts. Zone 2 rides improve cardiovascular function, don't create much hunger, improve your body's ability to use fat for energy. Zone 4 & 5 rides improve your ability to use glycogen for energy, can raise your FTP, etc. A good training plan will have a mix of both, with specific goals for specific workouts. Heart rate and power give you targets to help you do the type of workout you set out for. And then the opposite of this is the time-in-zone chart at the end of a workout helps you evaluate how you.
  • amandaeve
    amandaeve Posts: 723 Member
    Well, it has been interesting! I've never heard of Google TRIMP & Banister impulse response model or any of these things!
    @777cbr my performance has declined in recent years, but I also haven't *really* trained for anything in a long time. You and @NorthCascades bring up some good points making me think I need to think about goals in order for the data to be meaningful. Right now, I don't have specific goals, I'm just collecting data and trying to figure out how to describe my current level of fitness. Perhaps what I can do now is not so important as what I want to be able to do.
    For the past 4 years, the majority of my riding is commuting the same route; 8-mile trips, 8 times a week on average, year-round. Prior to that I rode about 3 times a week, more in a training style (hard days mixed with easy, climb days, long days, etc.). I found I could ride continuously at 145bpm. I could maintain 165bpm for seconds only, and the more I went into 165bpm the slower my average pace on a century. I also noticed my heart rate would increase at the same speed when temperatures increased over 75 degrees. Since I started commuting, my annual miles and average bpm hasn't changed, but now I sit in the 160's for a very long time, and 175 is my typical peak in a ride. However, my climbing speed and endurance, lean muscle mass and overall body composition is diminished compared to 4 years ago.
    I guess after typing this out, my goal is to get as much fitness out of my commute as I can since it's now my primary activity. I have 45 stop lights on my route, and between them and other obstacles there are only 3 brief stretches that feel aerobic. Also, having some data-based goals might make the commute more fun.
  • NorthCascades
    NorthCascades Posts: 10,968 Member
    edited October 2016
    You bike commute year round? My hat's off to you!
  • amandaeve
    amandaeve Posts: 723 Member
    Thanks! :smile: Last years' 4 months of rain and darkness really took a toll on me. I don't know if I can do it again. But I feel really lucky to live in a place where I don't have ice and snow to deal with, so I'm just gonna keep on riding.
  • kcjchang
    kcjchang Posts: 709 Member
    Ouch, pretty bad *kitten* (rule #9, velominati). Think I only been in the rain three times this year, one extended; one night ride; and one pre-dawn ride. Cold, wet and darkness is not my cup of tea (hope to avoid a soaking Saturday, my last century for the year). I stick with the trainer as soon as daylight savings starts and only venture out weekends. Be safe.
  • scorpio516
    scorpio516 Posts: 955 Member
    amandaeve wrote: »
    Thanks! :smile: Last years' 4 months of rain and darkness really took a toll on me. I don't know if I can do it again. But I feel really lucky to live in a place where I don't have ice and snow to deal with, so I'm just gonna keep on riding.

    I used to commute year round in Sacramento. Something tells me that's a lot easier than Seattle ;) .
  • bocasdelbob
    bocasdelbob Posts: 134 Member
    edited October 2016
    This is Kind of an interesting thread. I am trying to remember how long I have been going to spin class or how many HRMs I have burned out (corroded with sweat). I have always had a HRM for that exercise. Sportline 660 was my favorite. I kind of didn't know much about zones but my HRM had a percent of max HR so I always went by that. Presumably max was computed by 220 minus age.
    But for spin I would always try to get an average of 90% for 50 minutes or so. I don't know why I did it that way or even gave it much thought.
    Beauty of that whole thing though was I learned to regulate my breathing. I could spin at 90% more or less continuously with regulated breathing. I could max my heart out before losing my breath.
    This season I moved outside in the spring and I kind of lost my obsessive HRM habit. So I did a lot of riding without monitoring. I am a climbing guy and I especially like climbing in rarefied air. So I would put my tent at like 10,000 feet and climb upwards from there. I have ridden up to 14,000. Sweet eh?
    Now I got me a gps watch called garmin vivoactive so I can kind of substantiate some of my claims. I spent $50 to get the chest strap that goes with it. So after having spent the whole summer doing preposterous climbs without a monitor, now I have that going again.
    Yesterday for my morning climb I wore two HRMs. I wore my old Sportline and my new garmin chest strap. They both work good like you would expect from chest straps, you know, no latency but they each compute calories differently.
    One thing I always liked about the sportline is that it gave me an estimate of the calorie value of my exercise. You know, then I could kind of keep a grip on my eating.
    Yesterday's experiment showed a big disparity between garmin's and sportline's computation of the calorie value. Garmin gave me like half of the credit I got from Sportline. I guess since my diet is more or less calibrated to the Sportline, I am going to give it the most credibility.
    Anyway, it is getting cold on my morning climb. I am going to move back indoors as soon as snow sticks to the road. Climbing in the cold is kind of weird when you think about it. You get drenched with sweat then you got to turn around and descend. I take off my clothes and put on dry from my pack. Brrr. Makes the descent a little more fun. Anyway, I am having fun and I like my little gadgets.
    Anyway sorry for getting carried away. Zones I figure are just ten percent steps down from Max HR. I used to train at and upwards of 90% but realize that was for 50 minutes or so.
    If I want to do a "meander" climb, I do that in the low 80s. But I kind of lost track not wearing a monitor all summer. But I think I know what it feels like.
  • niblue
    niblue Posts: 339 Member
    Longer cycle rides for me seem to be split pretty evenly between zones 2 and 3. Shorter rides might include a fair bit of zone 4 but will still be mostly zone 3. When running it depends more on what I'm trying to do in the run - last night I did a 10 mile run which was almost equally split between zones 2 and 3, but if I'm going for say a 5K PB then that'll mostly be in zone 4 but with perhaps a little bit of zone 5 if I'm sprinting at the end.

    My guess would be that if you find you're spending most of your time in zones 4 and 5 then either your rides are short but high effort or (and perhaps more likely) your max HR setting is too low.

    The way I use the HR though it doesn't really matter if I knew what my max HR is because what I do know is more important - and what I do know is what HR I can maintain, either for shorter sessions like a 5K run or for longer sessions like a 50 mile bike ride or 10 mile run. I can then use my HRM to manage my pace, and that's what I do.
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