Effekt av bikarbonat på prestation i knäböj och bänkpress

[King Grub]

This study examined the acute effects of NaHCO3 ingestion on repetitions to failure and rating of perceived exertion (RPE) in the back squat and bench press in trained males. Eight resistance trained males took part in this double-blind, randomized cross-over experimental study whereby they ingested NaHCO3 (0.3gkg body mass) or placebo (sodium chloride NaCI: 0.045gkg body mass) solution 60mins before completing a bout of resistance exercise (3 sets of bench press and back squat exercise to failure at an intensity of 80% 1 repetition maximum). Experimental conditions were separated by at least 48hours. Participants completed more repetitions to failure in the back squat following NaHCO3 ingestion (p = .04) but not for bench press (p = .679). Mean ± SD of total repetitions was 31.3 ± 15.3 and 24.6 ± 16.2 for back squat and 28.7 ± 12.2 and 26.7 ± 10.2 for bench press in NaHCO3 and placebo conditions respectively. Repetitions to failure decreased as set increased for the back squat and bench press (both, p =.001). RPE significantly increased with set for the back squat and bench press (both, p = .002). There was no significant change in blood lactate across time or between conditions. There were however treatment X time interactions for blood pH (p = .014) and blood HCO3 concentration (p = .001). Following ingestion blood pH and HCO3 (p =.008) concentration were greater for the NaHCO3 condition compared to the placebo condition (p <.001). The results of this study suggest that sodium bicarbonate ingestion can enhance resistance exercise performance using a repetition to failure protocol in the first exercise in a resistance exercise session.

J Strength Cond Res. 2013 Oct 11. The effect of sodium bicarbonate ingestion on back squat and bench press exercise to failure.

[begt]

Bikarbonat har många användningsområden.

Ökad prestation på gymmet, bakning, och för att släcka mindre oljebränder i köket exempelvis (när bikarbonaten hettas upp frigörs koldioxid som kväver elden).

[lungan]

Tolkar man detta som att det produceras för lite mjölksyra vid bänkpress så att den basiska effekten ifrån bikarbonatet helt enkelt inte ger någonting? -Medans vid knäböj produceras mer mjölksyra och därav den positiva effekten ifrån bikarbonatet?