Advertise on Bikeforums.net



User Tag List

Page 1 of 3 123 LastLast
Results 1 to 25 of 52
  1. #1
    Senior Member lookinUp's Avatar
    Join Date
    Jun 2005
    Location
    Ocala, FL
    My Bikes
    Trek 520 and Trek Madone 5.2
    Posts
    407
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    What happens if you exceed your (theoretical) maximum heart rate

    Not looking for medical advice, but just curious about the maximum heart rate. My calculated max rate should be 148 (I'm old, that's why it is low), however, on a ride a few days ago, I was around 156 according to my Garmin 500 and heart rate monitor.

    So here's my question. Say you're reached your maximum HR - what happens if you keep on pedaling. Do you finally run out of breath? Do the legs finally give out? What physical issue will finally cause you to quit? (other than passing out )

    There is a hill that I can barely climb that I know will push my heart rate about as high as it can possibly go. I haven't worn the heart rate monitor on it yet, but will be curious how high the HR ends up being. I can make it over this hill, but wondered what happens if I tackle an even steeper/longer hill.

    Trek Madone 5.2 wsd

  2. #2
    Don from Austin Texas
    Join Date
    Jul 2009
    Location
    Austin, Texas
    My Bikes
    Schwinn S25 "department store crap" FS MTB, home-made CF 26" hybrid, CF road bike with straight bar, various wierd frankenbikes
    Posts
    1,167
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by lookinUp View Post
    Not looking for medical advice, but just curious about the maximum heart rate. My calculated max rate should be 148 (I'm old, that's why it is low), however, on a ride a few days ago, I was around 156 according to my Garmin 500 and heart rate monitor.

    So here's my question. Say you're reached your maximum HR - what happens if you keep on pedaling. Do you finally run out of breath? Do the legs finally give out? What physical issue will finally cause you to quit? (other than passing out )

    There is a hill that I can barely climb that I know will push my heart rate about as high as it can possibly go. I haven't worn the heart rate monitor on it yet, but will be curious how high the HR ends up being. I can make it over this hill, but wondered what happens if I tackle an even steeper/longer hill.
    Here's what will happen: you will be out of breath, heart pounding, maybe dizzy. That happens when you exercise real hard. The theoretical maximum heart rate formula is thoroughly discredited. Occasionally someone will defend it as a viable average, but even that is very dubious. Unless you have a specific heart condition or other problem, most medical authorities would tell you to go for it. I am 66 and have frequently exceeded my "maximum" heart rate and plan to continue doing so. Didn't bother my cardiologist one bit when I went for a checkup. he said, "Great, no need to give you a stress test!" Doesn't bother my personal trainer, either.

    Don in Austin

  3. #3
    Time for a change. stapfam's Avatar
    Join Date
    Jan 2004
    Location
    6 miles inland from the coast of Sussex, in the South East of England
    My Bikes
    Dale MT2000. Bianchi FS920 Kona Explosif. Giant TCR C. Boreas Ignis. Pinarello Fp Uno.
    Posts
    19,915
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Theoretical is vague but actual can cause a problem. I had my max determined by a stress test many years ago and it was 165. At that I was shaking like a Leaf- lost energy very quickly and could barely breath. This was under medical supervision a year after a bypass and the medic knew I was ready to pass out and stopped me just before I did.

    For a few years after this I could exceed my max but at 172 it was get off the bike and lie down before I fall down time.

    But like all else- use it or lose it. I struggle to get to 150 now and it is my brain that tells me to slow down. Bit more training and I should be able to see 160 again but I won't be going near my max as often as I used to. Thank goodness-Scary.
    How long was I in the army? Five foot seven.


    Spike Milligan

  4. #4
    ES&D t4mv's Avatar
    Join Date
    Oct 2006
    Location
    Roadieville, USA
    My Bikes
    3Rensho, Merlin XL, Melton custom, Michael Johnson tandem, Look 481SL, Pedal Force RS
    Posts
    1,368
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by stapfam View Post
    ...
    For a few years after this I could exceed my max but at 172 it was get off the bike and lie down before I fall down time.

    ...

    I'm glad I wasn't the only one in that boat. Back when I was 30something, I was messing with an HRM and had done the basic calculation for my (then) max HR, which I think was in the high 190somethings. So I was hoofing it up a hill and watched the HR climb til it cleared the threshold and it started to blink (it's programmable). So I went at almost-full gas for a bit until the hill gradient backed off a bit and I dialed it back a bit, but I guess it was warm enough that I started getting the I-don't-feel-so-good feeling whereupon I decided to just stop, even though I knew what was going to happen. Sure enough, the blood rushed from the head (where does it all go?) and I knew I had to lie down on the road, head below feet to get that Ahhhhh feeling. It was all worth it because shortly thereafter a guy driving the other way stopped and asked if I was OK.

  5. #5
    Member
    Join Date
    Apr 2011
    Location
    East Hampton, CT
    My Bikes
    2010 CAAD9 4, 2010 Trek 4300, 2003Trek 7500
    Posts
    31
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sorry to disagree but if you can get your heart rate up to 172 then 165 is not your maximum, 172 is.

  6. #6
    A might bewildered... Dudelsack's Avatar
    Join Date
    Oct 2011
    Location
    Loovul
    My Bikes
    Bacchetta Giro ATT 26; Lemond Buenos Aires
    Posts
    6,291
    Mentioned
    15 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by jmehalick View Post
    Sorry to disagree but if you can get your heart rate up to 172 then 165 is not your maximum, 172 is.
    This.

    When I hit max rate, I contemplate blowing chow.

  7. #7
    Get off my lawn! Velognome's Avatar
    Join Date
    Nov 2010
    Location
    The Garden State
    My Bikes
    1917 Loomis, 1923 Rudge, 1930 Hercules Renown, 1947 Mclean, 1948 JA Holland, 1955 Hetchins, 1957 Carlton Flyer, 1962 Raleigh Sport, 1978&81 Raleigh Gomp GS', 2010 Raliegh Clubman
    Posts
    5,377
    Mentioned
    21 Post(s)
    Tagged
    1 Thread(s)
    You don't explode?

  8. #8
    Senior Member GeorgeBMac's Avatar
    Join Date
    Jul 2012
    Location
    Pittsburgh, PA
    My Bikes
    2012 Trek DS 8.5 all weather hybrid, 2008 LeMond Poprad cyclocross, 1992 Cannondale R500 roadbike
    Posts
    1,809
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sorry, this is more medical but: when your heart beats really rapidly then it is not able to get the ventricles completely filled with blood before the next beat -- so the result is decreased perfusion.
    --------------------------------------
    bikes: 1992 Cannondale R500, 2012 Trek DS 8.5, 2008 LeMond Poprad

  9. #9
    Council of the Elders billydonn's Avatar
    Join Date
    Jul 2008
    Location
    Omaha, NE
    My Bikes
    1990 Schwinn Crosscut, 5 Lemonds
    Posts
    3,761
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Dudelsack View Post
    This.

    ,,,.
    This

    There is a time to resign oneself
    to old age and infirmity. You first.
    My Cycling Blogspot

  10. #10
    Senior Member Mobile 155's Avatar
    Join Date
    Sep 2011
    Location
    So Cal
    My Bikes
    91 Klein Quantum Road Bike,2011 CF Specialized Tarmac road bike. 2013 Haro FL Comp 29er MTB.
    Posts
    2,470
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    In my case it is simple. 5 years ago I Followed the formula and figured my Max HR was 163. But after a year or two a climbing sprint would push me to 172 so I figured that was my max HR. There are times today when I have pushed it to 181 and now consider that my max HR. But this time I am pretty sure 181-182 is my max HR because 183 causes me to get off the bike a hurl chunks. So my non medical opinion is your max HR is just below your have to stop and hurl point.
    Life is like riding a bicycle - in order to keep your balance, you must keep moving. ~Albert Einstein.

  11. #11
    Curmudgeon Wil Davis's Avatar
    Join Date
    Aug 2005
    Location
    Nausea, New Hamster
    My Bikes
    (see http://wildavis.smugmug.com/Bikes) Bianchi Veloce (2005), Nishiki Cascade (1992), Schwinn Super Sport (1983)
    Posts
    1,572
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    "………………………" - Marcel Marceau

  12. #12
    Over forty victim of Fate Cougrrcj's Avatar
    Join Date
    Jul 2011
    Location
    NE Ohio / Phoenix AZ
    My Bikes
    A few...
    Posts
    1,243
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Back in my youth (high school swim team), we'd check our heart rates, and mine routinely went over 230! According to these 'max rate' calculators, I should have been dead of a heart attack 37 years ago!

    Today (well yesterday actually at the Dr's office) my BP was 118/73 and a resting pulse rate of 58. I guess I'll be around a while longer!

  13. #13
    Senior Member
    Join Date
    Mar 2010
    Location
    new berlin wi
    My Bikes
    trek 720 multitrack hybred, 92 trek 2300, 2012 specialized roubaix
    Posts
    147
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    51yo 5' 10" 220lbs i have been wearing a chest strap heart rate monitor for the last 3 years, cateye V3 wireless.
    when i get to 160 and keep it there for over 15 min my toes start to go numb.
    above 170 my fingers start to go numb.
    180 and above i get a massive head ache.
    if i slow down to drop my HR to 140 and below the numbness goes away.

  14. #14
    Grumpy Old Bugga europa's Avatar
    Join Date
    Oct 2006
    Location
    Adelaide, AUSTRALIA
    My Bikes
    Europa, Hillbrick, Road Chief, Repco Superlite (Ol' Rusty)
    Posts
    3,114
    Mentioned
    12 Post(s)
    Tagged
    0 Thread(s)
    I no longer go to my max ... probably cowardice and laziness come into the equation

    My son is a semi-pro soccer player and is training to be a coach. We have lots of interesting discussions trying to work out where my stupid body does and doesn't fit in with his experience and what he's learning. My understanding is that as your body needs more fuel, the heart pumps harder to supply it. Typically, you'll bury yourself in the anaerobic zone and then start to climb out of it. You do however, reach a point where your heart can't keep up the supply and at this point, your heart rate will suddenly increase. THAT's the time to stop because you aren't gaining anything going on.

    Now, a serious question that I haven't put to my boy ... or my fiancee ( who's a nurse) on the grounds that I already give them enough reason to worry. After burying myself in the anaerobic zone for a bit, it's not unusual for my skin to develop a tingly feeling. Obviously, it's the blood feeding my muscles, not my skin however, should I be treating this as another warning and stop?
    I had a good bike ... so I FIXED it

  15. #15
    Senior member Dan Burkhart's Avatar
    Join Date
    Oct 2004
    Location
    Oakville Ontario
    Posts
    4,977
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by GeorgeBMac View Post
    Sorry, this is more medical but: when your heart beats really rapidly then it is not able to get the ventricles completely filled with blood before the next beat -- so the result is decreased perfusion.
    In fluid dynamics, I think they call that cavitation.
    Gearhubs demystified and other cool stuff.


    Rule #12: The correct number of bikes to own is n+1

  16. #16
    Senior Member downtube42's Avatar
    Join Date
    Oct 2008
    Location
    Columbus, Indiana
    My Bikes
    too many/not enough
    Posts
    1,528
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Dan Burkhart View Post
    In fluid dynamics, I think they call that cavitation.
    In diesel engines, cavitation eats through your cylinder walls.
    What is bicycle touring?
    "So I kept looking and eventually found that a spark plug had same threads. So I cycled next two days until I got to Jackson, MS with a spark plug instead of right pedal." - mev

  17. #17
    Senior member Dan Burkhart's Avatar
    Join Date
    Oct 2004
    Location
    Oakville Ontario
    Posts
    4,977
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by downtube42 View Post
    In diesel engines, cavitation eats through your cylinder walls.
    Yes it does. That's why they put a de-aeration line there.
    Gearhubs demystified and other cool stuff.


    Rule #12: The correct number of bikes to own is n+1

  18. #18
    rugged individualist wphamilton's Avatar
    Join Date
    Apr 2011
    Location
    Alpharetta, GA
    My Bikes
    Nashbar Road
    Posts
    6,277
    Mentioned
    20 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by lookinUp View Post
    ... on a ride a few days ago, I was around 156 ...So here's my question. Say you're reached your maximum HR - what happens if you keep on pedaling. Do you finally run out of breath?...
    Snipped for brevity.

    The formula (any formula) is untrustworthy for any individual's maximum heart rate. It is often higher or lower, sometimes considerably so.

    If you exceed you maximum heart rate, that's a heart attack. But if you reach your max and keep pedaling, you'll pedal more slowly gasping for air and might start feeling faint.

  19. #19
    Senior Member k7baixo's Avatar
    Join Date
    Jan 2011
    Location
    PHX AZ
    My Bikes
    Bacchetta CA2.0
    Posts
    495
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    At 175, I found that i was getting a little dizzy. That was enough to send me to a cardiologist and endure a battery of tests that ultimately confirmed that I'm in great shape. The only warning was to not push myself so hard ie stay below 165-170. It was worth it to learn that I'm healthy considering that arteriosclerosis and heart disease runs rampant in my family. I have neither and I attribute it all to exercise and cycling.
    Cheers, Gerry
    gerryelam.wordpress.com

  20. #20
    Senior Member OldsCOOL's Avatar
    Join Date
    Jul 2004
    Location
    northern michigan
    My Bikes
    '88 Cannondale Criterium, Trek Pro Series
    Posts
    5,206
    Mentioned
    15 Post(s)
    Tagged
    0 Thread(s)
    Last summer my pulse rate hit 186 on a few occasions. At 55yrs of age it isnt difficult to see I'm a few over the advertised. Heat can send the pulse up and that will get me off the quickly looking for shade and a faucet to drench my head. Otherwise, in a hill sprint (strava) when 186bpm hits I'm at the top of the hill due to pacing. However, breathing is far too heavy to continue and I'm pulling over. I dont exceed 186.
    Having a flat tire as part of the total cycling experience is highly overrated. Knowing how to fix one quickly is not.

    '85 Trek 460 road racer

    '89 Raleigh Technium PRE

    '79 Motobecane Super Mirage

  21. #21
    Climbing Above It All BikeWNC's Avatar
    Join Date
    Oct 2004
    Location
    Basking in the Sun.
    Posts
    4,146
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    My theoretical max HR is below my LT HR. lol My calculated max HR is 165, my actual max from observation is 192. That's a pretty big difference.
    FS: Shimano DA 7900 brake calipers, DA 7900 Crankset 50/34 175mm and BB

  22. #22
    tsl
    tsl is offline
    Plays in traffic tsl's Avatar
    Join Date
    May 2006
    Location
    Rochester, NY
    My Bikes
    1996 Litespeed Classic, 2006 Trek Portland, 2013 Ribble Winter/Audax
    Posts
    6,470
    Mentioned
    9 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Dan Burkhart View Post
    In fluid dynamics, I think they call that cavitation.
    I thought having a cavitation was talking with Dick Cavett.
    My two favorite things in life are libraries and bicycles. They both move people forward without wasting anything.
    The perfect day: Riding a bike to the library.—Peter Golkin


    Lucky for me, I work at a library and bike to work.

  23. #23
    Senior Member TacomaSailor's Avatar
    Join Date
    May 2005
    Location
    Tacoma WA & San Diego CA
    My Bikes
    Specialized Roubaix road bike, Stumpjumper Comp hardtail, Trance X2 FS mountainbike
    Posts
    249
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    My AGE related calculated max HR is 162 (Karvonen) - I comfortably ride at 162 for long climbs in cool weather

    Some days I can ride at 175 for extended periods

    I have had many treadmill stress tests in the last 25 years - my first cardiologist was a very serious and fast runner who I knew from trail runs. He always told me that a heart that is used to stress will not have any problem with more stress.

    My current cardiologist told me after my last stress test that I might die from many things but over revving my heart would never be one of them. He assured me that a heart that was used to working hard for long periods of time would not have any problem with working even harder.

    They both told me my lungs and 02 intake would be the limiting factor for my heart rate. Eventually I would just not be able to breath enough to keep up with my heart.

    Going on 66, over weight, out of breath, and I am still trying to see how fast my heart can beat - just keep pushing!

  24. #24
    Time for a change. stapfam's Avatar
    Join Date
    Jan 2004
    Location
    6 miles inland from the coast of Sussex, in the South East of England
    My Bikes
    Dale MT2000. Bianchi FS920 Kona Explosif. Giant TCR C. Boreas Ignis. Pinarello Fp Uno.
    Posts
    19,915
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by jmehalick View Post
    Sorry to disagree but if you can get your heart rate up to 172 then 165 is not your maximum, 172 is.
    1 year after a bypass and stress test showed max of 165. Bit of training and I could get to 165 without passing out. Perhaps my max had raised to 172 with training but at 165 I knew it and I had to have a very good reason to push myself that hard and beyond--but it can be done on very rare occasions.

    Edit---COULD be done on rare occasions- I am nowhere near the 165 now but back in harder training to get near it again.
    Last edited by stapfam; 01-19-13 at 12:57 AM.
    How long was I in the army? Five foot seven.


    Spike Milligan

  25. #25
    The Professor akohekohe's Avatar
    Join Date
    Nov 2009
    Location
    O'ahu
    My Bikes
    Alex Moulton Double Pylon, Surly Big Dummy, Alex Moulton GT
    Posts
    885
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You can't exceed your maximum heart rate but you can reach your minimum heart rate by trying to exceed your maximum heart rate.
    The more you drive the less intelligent you are. - Tracy Walter as Miller in Repo Man.

Page 1 of 3 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •