Effect of lactate supplementation on V̇O<sub>2peak</sub> and onset of blood lactate accumulation

Aaron E. Russ, Albino G. Schifino, Chee-Hoi Leong

Effect of lactate supplementation on V̇O2peak and onset of blood lactate accumulation

Číslo: 2/2019
Periodikum: Acta Gymnica
DOI: 10.5507/ag.2019.004

Klíčová slova: lactate supplementation, ergogenic aids, exercise testing, cycling, aerobic capacity

Pro získání musíte mít účet v Citace PRO.

Přečíst po přihlášení

Anotace: Background: Professional and recreational athletes use ergogenic aids to enhance aerobic performance, facilitate training adaptations, and reduce recovery time. While the ergogenic effect of commonly marketed and commercially available ergogenic aids (i.e., sodium bicarbonate and β-alanine) have been investigated extensively, the effectiveness of lactate supplementation on aerobic capacity markers (i.e., V̇O2peak and the onset blood lactate accumulation) has not been thoroughly investigated.

Objective: The purpose of this study was to examine the effect of lactate supplementation on V̇O2peak and the onset blood lactate accumulation (OBLA).

Methods: Eighteen healthy individuals (14 men and 4 women, age: 24 ± 5 years, height: 171 ± 7 cm, body mass: 76 ± 17 kg) participated in a double-blind-placebo-controlled study and were randomly assigned to one of 2 groups: placebo (PLA, n = 8), or supplement (SUP, n = 10) consisting of a combination of magnesium lactate dihydrate and calcium lactate monohydrate. Prior to and following supplementation, participants performed a cycling graded exercise test to determine V̇O2peak, time to exhaustion, power output, V̇O2 and % V̇O2peak associated with OBLA.

Results: There were no statistically significant differences between PLA and SUP in direct markers of aerobic capacity (all p > .05). Heart rate at OBLA was reduced by 6 ± 6% in the PLA group post-supplementation compared to pre-supplementation (p = .03).

Conclusions: Lactate supplementation did not present an advantage over a placebo in improving aerobic capacity. The results from this study support those by previous investigators suggesting that there is no physiological rationale for using lactate supplementation to improve aerobic capacity and/or performance.