Repeated high intensity bouts with long recovery

are bicarbonate or carbohydrate supplements an option?

Titel in Übersetzung: Repeated high intensity bouts with long recovery: are bicarbonate or carbohydrate supplements an option?

Thomas Stöggl, Rafael Torres-Peralta, Ebru Cetin, Masaru Nagasaki

Publikation: Beitrag in FachzeitschriftArtikel

Abstract

The effects of varying recovery modes and the influence of preexercise sodium bicarbonate and carbohydrate ingestion on repeated high intensity performance, acid-base response, and recovery were analyzed in 12 well-trained males. They completed three repeated high intensity running bouts to exhaustion with intervening recovery periods of 25 min under the following conditions: sodium bicarbonate, active recovery (BIC); carbohydrate ingestion, active recovery (CHO); placebo ingestion, active recovery (ACTIVE); placebo ingestion, passive recovery (PASSIVE). Blood lactate (BLa), blood gases, heart rate, and time to exhaustion were collected. The three high intensity bouts had a duration of 138 ± 9, 124 ± 6, and 121 ± 6 s demonstrating a decrease from bout 1 to bout 3. Supplementation strategy had no effect on performance in the first bout, even with differences in pH and bicarbonate (HCO3(-)). Repeated sprint performance was not affected by supplementation strategy when compared to ACTIVE, while PASSIVE resulted in a more pronounced decrease in performance compared with all other interventions. BIC led to greater BLa, pH, and HCO3(-) values compared with all other interventions, while for PASSIVE the opposite was found. BLa recovery was lowest in PASSIVE; recovery in pH, and HCO3(-) was lower in PASSIVE and higher in BIC.

OriginalspracheEnglisch
Seiten (von - bis)145747
FachzeitschriftThe Scientific World Journal
Jahrgang2014
DOIs
PublikationsstatusVeröffentlicht - 2014

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