[Termy]

Ursprungligen postat av Helgehorse

Och om man höjer dosen till något man inte är van vid?

https://link.springer.com/article/10...18-0980-7#Tab1
Pickering, C. & Kiely, J. Sports Med (2019) 49: 833. https://doi.org/10.1007/s40279-018-0980-7

Lite utdrag:

Habituation can result in reduced caffeine ergogenesis, but this may be offset if the pre-competition caffeine dose is greater than the habitual dose

Problem?

If caffeine-habituated individuals require greater caffeine doses to maintain ergogenic effects, this is potentially problematic for athletes. Evidence suggests there are no additional ergogenic effects of caffeine above doses of 9 mg/kg [32, 79]; if athletes habitually consume moderate-to-high doses of caffeine (~ 4–5 mg/kg), there may be a point at which further caffeine ingestion does not restore caffeine’s full ergogenic potential. Whilst such habitual intakes appear extreme, the regular intake of subjects in some research studies [80] reaches this level. Additionally, higher doses of caffeine may increase the risk of reported side effects, such as tremor, insomnia, and increased heart rate [32, 79, 81].

Ta bort koffein en period eller ej... ?

it remains unclear whether caffeine withdrawal actually re-sensitizes subjects to the physiological effects of caffeine, or whether the reintroduction of caffeine following a period of abstinence merely reverses the many side effects associated with withdrawal [86, 87, 88]. Again, despite its relevance, only a few studies have investigated the potential association between temporary caffeine withdrawal and the restoration of caffeine’s ergogenic effects.
...
In summary, it appears short-term, pre-competition caffeine withdrawal in habitual users does not enhance caffeine’s ergogenic effects. Withdrawal is also associated with numerous negative outcomes, including headaches, fatigue [21], irritability, muscle pain, sleep disturbances, and nausea [85, 87]. Fortunately, such symptoms appear limited to a sub-set of individuals, are typically mild and temporary [24], and reverse with caffeine ingestion [88]. Nevertheless, such acute withdrawal symptoms, close to key competitions, may negatively affect athlete subjective confidence and well-being.

Själv skippade jag både kaffeintablett och kaffe någon morgon för en tid sedan av nån anledning som jag inte riktigt minns (kanske var en släng halsbränna dagen innan?). Det kändes ju helt normalt när jag stod på crosstrainern och även i början av styrketräningen. Inga av ovannämnda biverkningar i alla fall. Halvvägs in i styrketräningen började någon underlig känsla av apati uppstå. Inte direkt att jag började få slut på gas i tanken då det gick att utföra diverse övningar som vanligt rent prestationsmässigt, men mer att den mentala energin började sugas in i något slags svart hål av meningslöshet. Träningen avbröts någonstans efter det och jag irrade hemåt med mörka tankar.