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    Re: [RC] Mad Science - Susan Garlinghouse


    Okay, Howard...
    Based on this same analogy, my little sewing machine Subaru that cruises at
    2000 rpm should be the ultimate performance machine, as long as you don't
    pile both dogs plus groceries into the back seat.  OTOH, my truck, a
    supercharged 454 dually, can pull 20,000 lbs at 90 mph, but the rpms will be
    around 3200-3500 to do it.  Does that mean the little Subaru is the better
    performance machine?  More efficient, yes.  But as long as both vehicles
    have a gas tank of sufficient and appropriate size to supply more than
    enough fuel for the job at hand, who cares which one is more efficient?
    
    Sorry, it's a nice idea but doesn't pan out physiologically.  I can make
    alot of arguments of how weight *does* affect performance, but you'll have
    to go some better to make a heart rate argument fly.   Glad to see you back
    on RC, though.
    
    Susan G
    
    ----- Original Message -----
    From: "Howard Bramhall" <hwb67@xxxxxxx>
    To: <ridecamp@xxxxxxxxxxxxx>
    Sent: Monday, July 15, 2002 10:05 AM
    Subject: [RC] Mad Science
    
    
    OK, my heart monitor results are now official.  Sit back folks, I got some
    numbers for ya'll.   And, yes, this is real science, Tom Iver's style.  I've
    injected, dissected, inspected, and rejected (I love Arlo Guthrie's "Alice's
    Restaurant") to come up with those accurate figures that any Enron or
    Worldcom executive would appreciate.  And, I've tried my best to keep it
    simple.  I've used George Bush ("accounting is complicated") as a model, for
    understanding.
    
    I have a 5 and a half year registered Paint mare.  Yes, I realize she's not
    an Arab, but she is doing quite well and I've owned her since she was 6
    months old.  We've done nothing but trail riding on her, so those fast
    twitch and slow twitch muscles have developed for endurance since day one
    (another of Iver's theories).  Anyway, here's the stats.
    
    Jennifer, my daughter, weighs in at 107 (with tack; yea, I know it's
    awesome) and me, I weigh in at 202 (with tack; a 6 pack short of being a
    heavyweight).  In the interests of me seeing my 50th birthday next year,
    I've left out the stats on my wife, so, for now, we'll just go with me and
    Jen.
    
    The weather conditions and times of our training ride are quite similar on
    all sessions.  Hot and sticky.  We do get up early, because Florida is a
    steam bath this time of year, to start out with temperatures below 80.  But,
    that does not last long.  If we leave the house at 7 AM and ride for 4
    hours, the temp goes up, the humidity goes down (not much).  By the time we
    pull in, back to the barn, the temp is 85, the humidity 70 percent.  When we
    leave the barn in the morning the temp is 74, the humidity 90 percent).
    These are averages, but they don't change much.
    
    Heart rates:  I discount the first 30 minutes.  Princess, my Paint, prefers
    the trot, and it's a good one.  My Arabs have to canter to keep up with her.
    I'd estimate her speed to be close to 10 MPH, but it does vary depending on
    obstacles encountered while traveling, like bears, deer, alligators, and
    snakes (oh my!).  In the case of deer flies attacking, her speed picks up to
    12 MPH.
    
    With Jen, in this gait, her heart rates varies from 106 to 110 beats per
    minute.  Quite impressive, especially after 3 hours of riding.  I do love
    this horse!
    
    With me, 133 to 138 BPM.  I can get her down below 130, but only if I slow
    her down some (slower trot).  These numbers are pretty consistent.
    
    Broken down into percentages, this is what I've come up with.  Using Jen's
    weight as the base, the difference between her's and mine is 88 per cent.
    Using my weight as the base, the difference is 47 percent (she's 47 per cent
    lighter than me or I'm 88 percent heavier than she is).  The difference in
    the heart rate numbers follows (what formula is this guy using here?) as
    such:  When I ride the BPM is 20.6 % higher, using 136 as the base number;
    when Jen rides her numbers are 24% lower than mine, using 108 BPM as the
    base.  This translates into 4.611 lbs per one percentage point heart rate
    difference, using my numbers as the base, or 3.96 lbs per one percentage hea
    rt rate difference, using Jen's numbers as the base.  Are you with me so
    far?  lol.
    
    So, using my theory, for every 4.285 lbs (average of 4.611 & 3.96)
    difference, between riders, there will be a one percent depletion in the
    horse's performance with the heavier rider.  Now, I know the heart rate
    isn't the only parameter in how a horse is doing, but it's still the best
    measurement we can use while riding.  Plus, I have to have some rational
    reason for sending Roger all this money for these heart monitors.
    
    I have had similar results with the two Arabs.  I don't have any numbers,
    for comparison, with my Saddlebred,  because no one but me will ride "El
    Whacko."  All I can say is his numbers are way up there, but I have found a
    gait that will keep him below 140.  I won't even leave the house, riding
    him, without a heart monitor.  He's the only horse I own that will go over
    180 in a good moving canter.  I could not imagine what his numbers would be
    in the mountains!
    
    The terrain where I live is quite flat.  When the sand becomes deeper, the
    heart rate does increase, more so with me riding her than with Jen.  Except
    for Dance Line, my Saddlebred, I have a difficult time getting any of my
    endurance horses over 150 BPM down here, even in a gallop.  This tells me
    two things: 1) my guys are in good shape 2) I need to move to the mountains.
    
    So, that's it.  You tiny hiney wimmen have a distinct advantage (as if you
    didn't know this already); I know it and now ya'll know it too.  If you're
    at a ride, and you notice the heavyweight riders kind of taking it easy or
    taking extra time to sponge and cool off their horse, at the vet check, now
    you might understand why.  Weight makes a heavy difference.  haha.
    
    Next week, respiration!  lol.
    
    cya,
    Howard (now you know!)
    
    
    
    
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    Replies
    [RC] Mad Science, Howard Bramhall