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Message started by jayg on Aug 9th, 2011, 8:00pm

Title: Hot Weather Cycling
Post by jayg on Aug 9th, 2011, 8:00pm

Interesting article in today's Dallas Morning News on cycling in 100 degree + weather. Popsicle Ride, BikeMart Wednesday night ride, and HHH ride were mentioned in the article. RBENT member, Daniel Schaaf (square-corners), was interviewed for the article. Excerpts: "And medical experts say that a fit, heat-acclimated rider who drinks enough water and pays attention to symptoms of potential heat injury is probably profiting from the exertion." "I believe they are getting exercise benefits, said Craig Crandall, a cardiology professor at UT Southwestern Medical Center..."

Title: Re: Hot Weather Cycling
Post by shellbear on Aug 9th, 2011, 9:01pm

I know I am not well acclimated and would not survive an afternoon or early evening ride.  :(  Hey, at least I know my limits!

Title: Re: Hot Weather Cycling
Post by jman on Aug 11th, 2011, 11:36am


shellbear wrote:
I know I am not well acclimated and would not survive an afternoon or early evening ride.  :(  Hey, at least I know my limits!

quoting Clint Eastwood,eah I'm with you,I go out near sunrise to play on the streets, plus the Hulen Mall parking lot is like a roller coaster world with bonus play time on the elevated ramps. Also the sprinkler systems there are on that time of day and you can ride in them to cool down  [smiley=lolk.gif] I rode 7 miles in the playland and adjoining roads including South today.

Title: Re: Hot Weather Cycling
Post by bobcat377 on Aug 11th, 2011, 6:29pm

Fort what its worth:

http://well.blogs.nytimes.com/2010/11/03/phys-ed-will-training-in-the-heat-improve-your-performance/

Title: Re: Hot Weather Cycling
Post by Bud_Bent on Aug 11th, 2011, 6:45pm

Heat adds another stress, and stressing your body makes it stronger. I've noticed that I run a higher heart rate compared to my perceived effort on extremely hot days.

Lots of us like to test our limits. But testing your limits with extreme heat involved can be dangerous, hence all the warnings we hear. I've pedaled home all these 105+ degree afternoons, on a faired bike, even. I haven't felt close to being in trouble this summer, but some of the heat related problems can sneak up on you without much warning, so I try not to get carried away with my effort on the really hot days.

Some of us are able to acclimate better to heat than others, too. So, it's one of those things where you have to watch out for yourself.

Title: Re: Hot Weather Cycling
Post by jdviz on Aug 11th, 2011, 11:00pm

E and I have been out in it around 3:30 - 4 pm 6days/wk for a couple months now. Just trying to get acclimated.

I think we're pretty well there. We hydrate well with nuun every hour or so. The only day it became a problem for me was the last 5 miles of a 65 mile ride last Saturday. I was very well hydrated, but the heat finally started to get to me then.

This coming Sat, I'll have an extra water bottle, just to squirt on my head at the end of the ride. E started to slow down this week, we think due in part to the heat, and in part due to slight over training. We've been taking it easy since, to recover.

I'll point out that I'm a Texas boy who grew up in the Middle East, E's a recovering yankee. (Shhh, she's originally from Michigan. Moved down here 6 years ago).

Title: Re: Hot Weather Cycling
Post by Action Lad on Aug 21st, 2011, 11:09pm

I'm also from the Northeast...really.  From Massachusetts.  When I got here, in 2000, I only rode at night during the summer.  Then, I got tired of not working out during the day, so I rode bit by bit during the day, increasing slowly, and resting when the machine needed it.  I've been doing that all these years, and now I can go all day.  When we're looking at 107 or so degrees, I do make liberal use of the shade, again when the body calls for it.  Not only do I carry a gallon of water in my trailer during these rides, but I really focus on nutrition the day before, and I eat (not much) at some point during the ride when they are over 30 miles in the heat.  

Title: Re: Hot Weather Cycling
Post by rmillay on Aug 22nd, 2011, 12:28pm

As Bud implies, when you add the extra stress of high heat, it is best to take it a bit easier.  One of our Lone Star Randonneurs, who was acclimated and very experienced (she's at PBP now), quit a 300k near the end earlier in July, and had to be taken to the hospital.  The diagnosis was hyponatremia (too much salt loss), and the doctors said another hour or so in the heat could have been fatal.

My take is, ride while you feel good, stop before you don't, ride hard if you must, just not for as long.  Drink!  Eat!  Be merry, if you are so inclined. [smiley=thumbsup.gif]

Title: Re: Hot Weather Cycling
Post by square_corners on Aug 22nd, 2011, 10:38pm

Based on the comment string above, my weekend writeup seems to fit right in as a reply.
I had planned on the Mineral Wells 400k this past weekend, but at the last second, switched to the 600k. I wanted to ride both days but knew it was unlikely I would ride Sunday after doing a 400k on Saturday, especially in this kind of heat.
Unlike last September, when I last did this ride, this was not a perfect weekend for a long ride. HEAT was the big issue. We didn't have that much bad chip seal and the wind wasn't very strong, but when it got hot, whatever wind we had, felt like someone had left the hair dryer on, right in our faces!
I used my cooling vest more efficiently this entire weekend, thanks to pre-ride advice on that subject. I followed the "best practice" suggested and enjoyed many more hours of cooling than previous attempts had netted. As a result, I probably had the least trouble with the heat this weekend. But, we took long breaks wherever we could, topping off bottles and camelbaks with ice, at every opportunity. I never would have attempted a ride this long in this kind of summer heat without the aid of the cooling vest and electrolyte replacement I've come to depend on. I doubt that the absence of one or the other would have been good enough as we experienced sun temperature up to 116° on Saturday and shade temp of 108°. It was a little cooler on Sunday, with temp topping out at 107° in the shade. No reason to go into details of the ride - we did ride straight thru, only to take advantage of all night cooler temps. That did not help us avoid full daylight heat on day 2 - just meant we didn't have to do as many miles in the full heat! Total miles was 374 and climbing of just over 12000 ft. The average was pretty slow, at 15.2 for the entire ride, but given the conditions, not really that bad!
     

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