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Carbohydrate mouth rinse enhances time to exhaustion during treadmill exercise.
Fraga, Cindy; Velasques, Bruna; Koch, Alexander J; Machado, Marco; Paulucio, Dailson; Ribeiro, Pedro; Pompeu, Fernando Augusto Monteiro Saboia.
Affiliation
  • Fraga C; Biometrics Laboratory (LADEBIO), Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
  • Velasques B; Physical Education Graduate Program, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
  • Koch AJ; Exercise Physiology Laboratory, Lenoir-Rhyne University, Hickory, NC, USA.
  • Machado M; Laboratory of Human Movement Studies, Universitary Foundation of Itaperuna, Itaperuna, Brazil.
  • Paulucio D; Biometrics Laboratory (LADEBIO), Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
  • Ribeiro P; Physical Education Graduate Program, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
  • Pompeu FA; Biometrics Laboratory (LADEBIO), Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Clin Physiol Funct Imaging ; 37(1): 17-22, 2017 Jan.
Article in En | MEDLINE | ID: mdl-26302885
Mouth rinsing with a CHO solution has been suggested to improve short (<1 h) endurance performance through central effect. We examined the effects of mouth rinsing with a CHO solution on running time to exhaustion on a treadmill. Six well-trained subjects ran to exhaustion at 85% VO2max , on three separate occasions. Subjects received either an 8% CHO solution or a placebo (PLA) every 15 min to mouth rinse (MR) or a 6% CHO solution to ingest (ING). Treatments were assigned in a randomized, counterbalanced fashion, with the mouth-rinsing treatments double-blinded. Blood samples were taken to assess glucose (Glu) and lactate (Lac), as well as the perceived exertion (RPE). Gas exchange and heart rate (HR) were collected during all trials. Subjects ran longer (P = 0·038) in both the MR (2583 ± 686 s) and ING (2625 ± 804 s) trials, compared to PLA (1935 ± 809 s), covering a greater distance (MR 9685 ± 3511·62 m; ING 9855 ± 4118·62; PLA 7295 ± 3727 m). RER was significantly higher in both ING and MR versus PLA. No difference among trials was observed for other metabolic or cardiovascular variables (VO2 , Lac, Glu, HR), nor for RPE. Endurance capacity, based on time to exhaustion on a treadmill, was improved when either mouth rinsing or ingesting a CHO solution, compared to PLA.
Subject(s)
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Physical Endurance / Carbohydrates / Muscle Fatigue / Mouthwashes Type of study: Clinical_trials Limits: Adult / Humans / Male Country/Region as subject: America do sul / Brasil Language: En Journal: Clin Physiol Funct Imaging Journal subject: FISIOLOGIA / PATOLOGIA Year: 2017 Document type: Article Affiliation country: Brazil Country of publication: United kingdom

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Physical Endurance / Carbohydrates / Muscle Fatigue / Mouthwashes Type of study: Clinical_trials Limits: Adult / Humans / Male Country/Region as subject: America do sul / Brasil Language: En Journal: Clin Physiol Funct Imaging Journal subject: FISIOLOGIA / PATOLOGIA Year: 2017 Document type: Article Affiliation country: Brazil Country of publication: United kingdom