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View Full Version : Caffeine Before a Workout: Bad?



threatmix
01-16-2006, 08:37 PM
I wasn't sure on which forum to post this, so I just picked this one, but I found this article, which basically says that caffeine limits blood flow in the heart during exercise, and is a mental, not a physical stimulant, so it shouldn't be used before exercise.

http://www.sciencedaily.com/releases/2006/01/060114232653.htm

getfit
01-16-2006, 08:41 PM
i have caffeine an 1hr prior to my workout, seems fine

Built
01-16-2006, 08:43 PM
I love caffeine pre-workout.

I seem to recall reading that it facilitates the release of FFAs.

cphafner
01-16-2006, 08:46 PM
I take 400 mg pre-workout, pumps me up.

ryuage
01-16-2006, 08:47 PM
also promotes insulin resistance (counter productive bulking) but thats just being nitpicky... so if you want that .00001% edge...

Built
01-16-2006, 08:59 PM
Yeah, yeah. I'll take my chances.

I DID go off ephedrine, though, for my bulk. I understand that's worse for promoting IR.

Maki Riddington
01-16-2006, 09:22 PM
I believe it was after 1000mg that there was a fat burning effect that occured.

Built
01-16-2006, 09:23 PM
Hmmm. I wasn't aware that caffeine had a fat-burning effect - just that it helped mobilize fat stores.

cphafner
01-16-2006, 09:33 PM
I believe it was after 1000mg that there was a fat burning effect that occured.

I wouldn't sleep for a week on a 1000mg.

ryuage
01-16-2006, 09:35 PM
i guess its time to up the dose, im pretty sure I can down a gram and go right to bed no problem.

Built
01-16-2006, 09:40 PM
You and me both!

D Breyer
01-16-2006, 09:46 PM
I wouldn't sleep for a week on a 1000mg.
:withstupi

Adam
01-16-2006, 10:08 PM
I think I hold the record for Ceffeine intake.
1600mg, one dose.
Never again will I do that.

Post your records.

getfit
01-16-2006, 10:12 PM
i run a marathon if i take only 400mg

cphafner
01-16-2006, 10:16 PM
i run a marathon if i take only 400mg

Same here.

cphafner
01-16-2006, 10:17 PM
I think I hold the record for Ceffeine intake.
1600mg, one dose.
Never again will I do that.

Post your records.

Never took too much caffeine. I have taken too much Niacin, that was scary. My body was on fire. I was standing in an ice cold shower breaking a sweat. My skin was bright red, and my lips felt like they were totally puckered. Scary stuff. My dad is an EMT and he made me sit down and take my blood pressure. He was ready to take me to the hospital.

threatmix
01-17-2006, 07:20 AM
Yeah, I've never taken caffeine in pill form, but I've always had a cup of tea before a cardio workout. I can't imagine it makes much difference, but I'm going to keep doing it anyway.

Bob
01-17-2006, 07:31 AM
I once had to drive cross-country (New York to Kansas and then back to Kentucky) in 36 hours... lots of caffeine.. but there was one dose around St. Louis on the way West when I took 2 of those 500 mg pills with 2 large (32 oz) cups of coffee... For 4 hours I was sweating, jittery, and felt like my veins were going to pop out of my skin... then it was the biggest headache I have ever had. I think that was something like 1480 mg ...

Only afterward did I read the caffeine pill labels...
Don't drink with Coffee!!! LOL...
I never did that again.. one pill or one large cup of coffee..

PS Edit... I take a caffeine booster like Met RX Energy X before a WO when I am tired.. like after a hard day of work, etc.. but I do find I build up a resistance if I take any caffeine for more then 4-5 days in a row.. so then I feel no benefits..

malkore
01-17-2006, 10:55 AM
I actually just saw a report on the news last night...they did a study of people doing cardio, and taking a 'normal' dose of caffine (100-200mg) 45 mins prior to activity.

They saw a marked decrease in blood flow to the heart muscle, due to the way caffine constricts blood vessels.

Now, they did not say what (if any) negative effect this might have...but I have to say, reducing blood flow to the muscle that pushes blood to every part of the body does not sound like a good idea.

I hope they do more research, but for now I'll continue my standard practice which has never included supplementing with caffine prior to workouts. I just don't feel I need it.

Maki Riddington
01-17-2006, 08:45 PM
Hmmm. I wasn't aware that caffeine had a fat-burning effect - just that it helped mobilize fat stores.

It has thermogenic properties beyond doses of a gram. However it's simply easier to stack it so you get a synergystic effect. as for the theory that it faccilitates the release of FFa's that is not true anymore. Recent studies say otherwise.

OrientalNDN
01-18-2006, 12:01 AM
Coffee befor a work out is like.....wait a sec...isn't this place sensored??

Built
01-18-2006, 12:02 AM
Maki,

Thanks for the clarification. Got a link?

Maki Riddington
01-18-2006, 04:08 PM
Got a link?


As for the theory that it facilitates the release of FFa's that is not true anymore. Recent studies say otherwise.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_uids=2709979&dopt=Abstract

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_uids=3702646&dopt=Abstract

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_uids=3702646&dopt=Abstract

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12399249&dopt=Abstract

http://jap.physiology.org/cgi/content/full/93/3/990