could be you're also a genetically fast caffeine metabolizer Anf.
In the study they hypothesized that fast metabolizers are able to gain the positive effects of caffeine without experiencing as many negative side effects as those who are slow metabolizers.
In more pop-culture older news, caffeine seems to also reduce blood flow to the heart and this effect is magnified at altitude, https://www.sciencedaily.com/releases/2 ... 232653.htm I haven't actually pulled this article to look at effect sizes or to critique the methodology. It's interesting though and it leaves me wondering about the interaction with caffeine metabolism rate and individual differences in the magnitude of blood flow reduction...
Exactly Anf, the research is difficult to interpret.
Perhaps the benefits study was done at sea level and the fast metabolizers account for the majority of gains....? It's difficult to say what is going on, too many studies have small sample sizes and are difficult to draw general conclusions from.
Yeah... true!!! But what we do know, is how we feel from our own personal experiences, dabbling.
So with that, for me, i can definitely say i felt an increase in performance on endurance sessions. Percentages are however not straight forward to calculate, without the right tests being done. But, i would say i easily felt a 20% improvement, over endurance sessions where i had not taken in any caffeine beforehand.
Male, 39, 5'10, 75kg (Started rowing on June 9th 2016)
Anth, if you're relatively untrained you might benefit from beetroot juice too. It's an acquired taste though.
45M, 5'11", 71kg, ex bike time trialler, SBs - 18:06(5K), 8108m(30mins), 37:18(10K), 15826m(1hr), 1:21:41(HM) Targets: sub 18(5K), sub 37(10K), >8150m PBs: 6:44(2K), 18:02(5K), 8120m(30mins), 37:18(10K), 15826m(1hr), 1:21:41(HM)
3 grande cups of Cafe Bustelo per day have been part of my routine for the 3 years that I have been rowing. I have constant improvement in that 3 years, but probably would have without it also.
In the spirit of the original question, I would be interested in receiving feed back on people interested in my little experiment of late.
I have been taking 400 mcg of Folic Acid as a supplement to improve mental acuity, and maybe to help with Alzheimers, if it ever comes. Recently I switched the time that I take this supplement to prior to my daily row. I think I may be supercharging the dose, into my bloodstream. I feel better, and in a mental type of way. I may have just convinced myself of this, but I would be interested if anyone else wants to try the process, and state here if they notice anything supernatural. Of coarse, down your pill with a large espresso. 3 cups of Cafe Bustelo
It is all about the way you feel. Weather it works or not, who knows.
I believe caffeine is still on the performance enhancing dope list used by certain bodies ( athletics / Olympics etc.) So I'm not surprised that anyone performs better after drinking even small amounts
Dean 2017 Season: 196cm / 94kg : M48 Training Log - ʕʘ̅͜ʘ̅ʔ -Blog ~seven days without rowing makes one weak~
Caffeine (high levels) was on the UCI's (cycling) banned list but was taken off in the early 2000s because of the very issue left coaster has talked about: metabolism of the stuff is so very varied.
Caffeine in gels now; tablets; targeted use for certain stages and events. (Zero benefit if you mainline the stuff day in, day out). Froome's delivery method on certain high peaks? A bottle containing two espressos with a lot of sugar and honey.
Sodium bicarbonate is another readily available ergogenic. Rather less pleasant, of course. Anyone given that a go for the shits and giggles?