Thursday, March 17, 2011

Cardiac Drift

The human heart feels things the eyes cannot see, and knows what the mind cannot understand - Robert Valett
One way to measure fitness is to examine cardiac drift. I'll loosely define this as the tendency of the heart rate to increase as the length of the exercise session increases. If your heart rate doesn't change much over 10 miles then you're in great shape. If it steadily climbs to your maximum after only 5 miles then you may be able to improve your marathon performance by increasing your stamina.

The key to an accurate measurement of cardiac drift are these keys:
1) A sufficient warm-up
2) Consistency during the run (pace, hydration, temperature, elevation, etc.)
3) Distance of the test run

Today I ran 8 miles on the treadmill while I watched the first games of March Madness. I'll count my first two miles as a warm-up -- enough time to let my heart rate fall into a steady state. I kept the pace constant (7:41), the gym temperature didn't vary (although it was warm enough to leave me soaking wet with sweat). I kept the treadmill on a 1% incline the whole time. I did not drink anything over the entire hour run, which may negatively skew my results. Failure to replenish your fluids results in a higher heart rate in large part because the blood becomes more viscous, making it harder to pump. The heart increases the rate in order to maintain an adequate oxygen supply to the muscles.

As far as point 3 goes, I ran six miles after my warm-up. I've read studies that your drift should be under x% for distances of y miles in order to be in shape for races of z distance. I can't remember any of those variables, but I would think that a 6 miles cardiac drift test would be a good indicator of half marathon fitness.

This is how it played out, with each line representing an average heart rate for that mile:
7:41 pace throughout, 1% incline
124 BMP
132
135
139
141
143
144
145

I'm not really sure what to do with this, but for simplicity sake I'll subtract the average of mile 3-5 from the average of mile 6-8 to get about 6 beats per minute. if I take that number and divide it by the average of mile 3-8 then I get a 4% cardiac drift. If I factor in my resting heart rate (about 45?) then the drift is about 6%.

(144-138)/(141.167 - 45) = 5.67%

The thing is, I don't know if 4% is good, or if 6% is bad. And if I say that my warm up was four miles instead, then those numbers go down to 2% and 2.5%. And I also don't know the effect of not drinking during the run.

I guess the answer is not so much the absolute number so much as how these numbers change when/if I ever do this same exact test again.

42 comments:

Paredes said...

good....

in America said...

very nice blog...thanks

Serta Mattress said...

useful information

sofia123 said...

After reading this I came to know that this is the best explanation. Always share these kind of information.Thanks for this and there is some online HIV information which best and more effective.

Asicstigershoesstore said...

Vamp excepting a removable strap Asics Tiger outer need of shoes after your purpose cunning packaging next jordans morphed into a pair of prevalent with the sound Gucci sneakers 45, Hogan Online "French flyers" pater and the NBA summer league players is such a couple of interface. In a shoe border 23 people will soon be mentioned,
Cheap Rosetta Stone
but it is proved.

Anonymous said...

The gods instructed Pharroh to give the Jews all that gold as temptation, and it worked.
So unlike Pharroh, but an effective corruptor which was responsible for the 40 years of warmongering under Joshua. This caused another host of problems to befall the Jewsish people as well.

Even as peasant farmers we could be lulled::Good weather, bountiful harvests, etc. This is what old-world preachers were good for.
This stereotypical preacher had classic preaching styles:::Loud, damnation-fueled teachings. Contrast to today, preachers who are lulling the Damned into cruise control. The old-world style was important to snap people out of complacency. Unfortunately, in today's enviornment people consider this style insulting, and they lose a precious message designed for the favored of yesterday.

I speak of how The Beast has changed the country and the world with Californication. Whereas 20 years ago the young women used to ridicule homosexuality now they find it acceptable. Come the next generation the norm may be experimentation.
Not in the South. The Southern man has retained even more time, consider homosexuality an abomination and reject bi-racial unions, rightfully so. Unfortunately, much like the immigration issue the gods use hated to accomplish the region's value system among the masses.
Understand the Matrix/reality duality::::For every issue the gods have their REAL reason for creating an issue. In the case of the SOuthern man it is because they have the conbination of favor/disfavor which allows them to maintain the god's conservative stance embraced by humanity throughout time.
Of course the giveback in the SOuth would be elements like overconsumption of alcohol, abandoning the gods for NASCAR Sunday, tattoo freaks violating the body the gods gave them in their image. Pure favor it is not:::What they gain in a decent value system they lose elsewhere. The fact the gods preyed upon the Southern man with a drug-driven, junkie-laden brilliant regional rock bands is a bad sign. The perpetual nature of country music is another:::Rock is dead. Too many of these rednecks live in ignornace and feel their perpetual music genre is a sign of favor. Quite the opposite is true.
I have repeatedly illustrated the frequency of "reverse positioning". This is yet another.

The United States is a dumping ground for the disfavored. THis was how it was used during European immigration, this is how it is used today.
The Japanese Earthquake/Tsunami of 3/11/11 was actuslly a good sign for the people. Alarming because it came decades after their most recent admitted atrocities during WWII, at least they will experience corrective punishment, whereas the United States won't be as lucky.
Russia too enjoyed corrective punishment for the 1980 invasion of Afghanistan.
THere is something about this country. Interferring/injuring the Afghan people incurrs he god's wrath. It cost the SOviets their protection of communism. Now the gods have leveled the playing field among the last few white peoples who still enjoyed it on their way to a homogeneous global enviornment. If I am right about the United States we won't be as lucky. When we go down it will be for good, and there will be no recovery.
Yes, the clone host fake politicians have been planning for this for decades. Ronald Reagan turned a $1 trillion Federal debt into $6 trillion at the end of his Administration. Much like W in Iraq, this served to terminate the favor of a group of people. Reagan just didn't have to do it with violence as W did, but he did do it against white people, which says something.
Never talk to me again about the cruelty of eating seafood. The gods are filthy hyporcrite shit.

cruise in maldives said...

I will recommend my friends to read this.I will bookmark your blog and have my children check up here often

Samsung Galaxy S3 Review said...

The interesting thing about Cardiac Drift is that if you have tried it you will never skip this event

Novelty Pens said...

There has to be a maximum point for results referring to cardiac drift. One can only train and improve to a point. For some that level or point is much higher than for others.

sbo said...

coolsbo

mjshdiif said...

not part of the use or purpose of the product itself. Aesthetic functionality was at issue in Jay Franco & Sons v. Franek, when the US Court of Appeals for the Seventh Circuit cancelled a federal trademark registration thatChristian louboutin outlet claimed the circular beach towel. The court held that, "[g]ranting a producer the exclusive use of a basic element [such as color] impoverishes other designers' palettes." The

classic - and very stylish - stilettos seems to have branched out into taxidermy.One of his newest pair of heels, as seen on Blake Lively in New York this morning, are sparkly, hairy versions of a lion's paws.Louboutin's heels are a celebrity favourite. Rosie Huntington-Whitely recently admitted that they made her 'feel like a woman'.'I feel they make you look very sexy, the cuts are beautiful; t

e-inch stiletto and those traffic-stopping soles, theyChristian Louboutin Women's Pumps became the ultimate seduction tool, attracting women to Louboutin, and men to women."Indeed, no one ever thinks about the soles of shoes, even though they're very important," Louboutin says. "When you turn around to watch a woman walking away, what do you see? An outline, a gait, and the soles, which have become like two red signals. Several o

ure is a functional element whereby the competitors need to use it in order to effectively compete. Indeed, the red lacquer applicationincreases the costs of manufacturing and points to the opposite conclusion.Under Christian Louboutin Women's Slingbakthe second prong, Tiffany said that the District Court did not appear to have conducted any examination to whether the application of the red lacquer improved the operation of the Loub

acedemic writing service said...

Hi, nice post. I have been pondering this topic,so thanks for sharing.

masterpapers.com said...

Thanks for info

writing jobs at home said...

Interesting post. Thanks.

termpaperwriter review said...

Cool thing! thanks for sharing. I have never heard about ********!

windows hosting said...

What a great post! thank you for sharing! i liked it very much)

electronic cigarette said...

This is so cool..thanks so much for the info. Love it!

seo said...

It is a nice post.thank you.

free mp3 songs download said...

Nice post and it would be great for everyone, Thanks a lot for spreading this information here.

write research paper said...

Hello my friend! I want to say that this article is awesome, nice written and include almost all vital info. I would like to see more posts like this.

Jim said...

Microsoft has Office 2010 Professional to remove from the subscription site to MSDN,TechNet, Expression.Microsoft sentenced to stop sales of Word and Microsoft office 2007.

jiulin said...

Women usually possess a fascination with shoes. Nike Air Max Shoes
They adore stocking up inside the broad variety of kinds of shoes to fixture their countless different outfits. Preserving this mind, Yamaha Fairings there are shoes that glimpse and totally really feel appreciably much better than standard variations at critically affordable prices. Buy Onitsuka Tiger OnlineKicks Palace allows which you don your ft by delivering you utilizing a broad assortment of ladies

hotels in pachmarhi said...

Very interesting and informative article. Good job, thanks for sharing! I am waiting to see your next articles
pachmarhi hotels
best hotel in pachmarhi
pachmarhi

arfa karim said...

wow nice blogger every work is ok

Business Broadband Packages said...

Great going, keep it up.
business broadband packages

Anonymous said...

partition software and 64-bit vista http://buyoem.co.uk/fr/product-14156/ForkLift-1-0-Mac accounting software for auto shops [url=http://buyoem.co.uk/es/product-14304/PassMark-PerformanceTest-v6-1]dvd autorun software vob[/url] sequencher software
[url=http://buyoem.co.uk/fr/category-100-107/Programmation-et-laboration]Programmation et elaboration - Download OEM, Software Sale, OEM Software[/url] bluemagic software
[url=http://buyoem.co.uk/es/product-37362/Video-Capture-Factory-7-2-Portable][img]http://buyoem.co.uk/image/1.gif[/img][/url]

Anonymous said...

origin of construction software http://buyoemsoftware.co.uk/es/category-12/Multimedias-y-entretenimiento?page=2 access web software [url=http://buyoemsoftware.co.uk/product-25042/SecureKit-Secure-Password-Manager-2-3]meade magellan software[/url] genealogy database software free
[url=http://buyoemsoftware.co.uk/product-35536/Chronos-SOHO-Organizer-9-1-MacOSX]Chronos SOHO Organizer 9.1 MacOSX - Download OEM, Software Sale, OEM Software[/url] meetoo software
[url=http://buyoemsoftware.co.uk/fr/product-37179/VeryPDF-PDF2Word-3-0-Portable][img]http://buyoem.co.uk/image/3.gif[/img][/url]

Anonymous said...

palm free sex software http://buysoftwareonline.co.uk/it/product-37128/PostgreSQL-Data-Wizard-7-8 adlab advertising media planning software lancaster [url=http://buysoftwareonline.co.uk/es/product-34610/Microsoft-Windows-7-Ultimate-x32-ENGLISH-Service-Pack-1]broadcast email server software[/url] tax preparation software for businesses
[url=http://buysoftwareonline.co.uk/product-36792/Adobe-Flash-Media-Interactive-Server-4-5-x64]Adobe Flash Media Interactive Server 4.5 x64 - Software Store[/url] server backup utility software
[url=http://buysoftwareonline.co.uk/product-19994/A-better-Find-Rename-7-0-Mac][img]http://buyoem.co.uk/image/4.gif[/img][/url]

Anonymous said...

order 1099 software http://buysoftwareonline.co.uk/product-36129/EASEUS-Partition-Master-7-0-Server-Edition xda software free download [url=http://buysoftwareonline.co.uk/product-10006/Cosmic-Blobs-Deluxe-Version-1-3]talkimg software[/url] gc83 software
[url=http://buysoftwareonline.co.uk/product-37219/MyTrigger-1-7]MyTrigger.1.7 - Software Store[/url] seo search engine strategy software promotion
[url=http://buysoftwareonline.co.uk/de/newslist][img]http://buyoem.co.uk/image/1.gif[/img][/url]

Anonymous said...

[url=http://redbrickstore.co.uk/terms.htm][img]http://onlinemedistore.com/9.jpg[/img][/url]
pharmacy assistant jobs around memphis http://redbrickstore.co.uk/products/aldactone.htm waston pharmacy [url=http://redbrickstore.co.uk/products/flovent.htm]prepackaged meds giant pharmacy[/url]
thiland pharmacy http://redbrickstore.co.uk/products/lisinopril.htm pharmacy week job posting [url=http://redbrickstore.co.uk/products/zestril.htm]zestril[/url]
certificate in geriatric pharmacy usa http://redbrickstore.co.uk/products/zestril.htm rite aid salem nh pharmacy [url=http://redbrickstore.co.uk/products/imitrex.htm]university of maryland pharmacy[/url]
advantages and disadvantages of being a pharmacy technician http://redbrickstore.co.uk/products/levitra.htm associate of arts degree pharmacy technician [url=http://redbrickstore.co.uk/products/septilin.htm]septilin[/url]

Anonymous said...

Your write-up provideѕ established useful to me.

It’s really usеful and you are obviοusly quite knowleԁgeable
in this field. Yοu gеt popped my perѕonal eyes to numeгous
opіnion of thiѕ pаrticular subjeсt usіng interesting and гeliаble
content.
Here is my web blog : buy viagra

Anonymous said...

Τhe аrticlе has еstablished beneficial to us.

It’s extremеly helpful anԁ you're certainly extremely educated in this region. You have got popped my sight in order to numerous views on this particular topic together with interesting and strong content material.
Also visit my blog post ... xenical

Anonymous said...

[url=http://certifiedpharmacy.co.uk/products/benicar.htm][img]http://onlinemedistore.com/6.jpg[/img][/url]
pusan pharmacy http://certifiedpharmacy.co.uk/products/lukol.htm discount online pharmacy [url=http://certifiedpharmacy.co.uk/products/cardura.htm]list in house pharmacy companies[/url]
elite pharmacy dea http://certifiedpharmacy.co.uk/products/retin-a-0-05-.htm tackett pharmacy weatherford tx [url=http://certifiedpharmacy.co.uk/products/lexapro.htm]lexapro[/url]
health care screening in community pharmacy practice http://certifiedpharmacy.co.uk/catalogue/h.htm pharmacy tech examination study [url=http://certifiedpharmacy.co.uk/products/actonel.htm]online pharmacy carisoprodol[/url]
school of pharmacy in tennessee http://certifiedpharmacy.co.uk/products/tadacip.htm mayo pharmacy [url=http://certifiedpharmacy.co.uk/categories/pain-relief.htm]pain relief[/url]

Anonymous said...

Sweet blog! I found it while browsing on Yahoo News. Do you have any tips on how to get listed in Yahoo News?
I've been trying for a while but I never seem to get there! Many thanks

Feel free to visit my web blog - book of ra kostenlos online ohne anmeldung spielen

Deals said...

Splendid work. Your writing is top notch.
best deals
travel deals
Cheap Deals
laptop deals
tv deals
online deals
best buy deals
great deals
camera deals

Anonymous said...

It's in point of fact a great and useful piece of information. I'm happy that you shared this useful information with us.
Please keep us informed like this. Thank you for sharing.

Here is my blog post novoline automaten kaufen gebraucht

Anonymous said...

http://hapna.com/pre/buypropeciaonline/#12974 where to buy propecia in uk - propecia generic fda

Anonymous said...

dating wooden sewing thread spools http://loveepicentre.com/advice/ 10 top dating site
kaley cuoco dating johnny galecki [url=http://loveepicentre.com/testimonials/]online dating good people meet[/url] kelly monaco dating
joe jonas is dating [url=http://loveepicentre.com/map/]social networks for dating[/url] best free christian dating sites [url=http://loveepicentre.com/user/kelvin300/]kelvin300[/url] 100 free local adult dating

anilkumart said...

I really like your blog it's really nice. I really enjoy here. & Your article its so unique its amazing. Thanks a lot for sharing. blogging.

Deals
best deals
travel deals
Cheap Deals
laptop deals
tv deals
online deals
best buy deals
great deals
camera deals

anilkumart said...

The content was good..And the post is well written

Search Engine Marketing Company in india
Search Engine Optimization Company in india
Digital Marketing Company in india
Social Media Optimization Company in india
top web design companies
website design company
best website design companies
Website Design Companies
web development company india
web design company india

anilkumart said...

The content was good..And the post is well written

Deals
best deals
travel deals
Cheap Deals
laptop deals
tv deals
online deals
best buy deals
great deals
camera deals

Ivga Stark said...

You blog is amasing! It's a great opportunity to get first-class editors 1ws.