PMID- 25203506
OWN - NLM
STAT- MEDLINE
DCOM- 20160330
LR  - 20150707
IS  - 1543-2742 (Electronic)
IS  - 1526-484X (Linking)
VI  - 25
IP  - 3
DP  - 2015 Jun
TI  - Carbohydrate Mouth Rinse Counters Fatigue Related Strength Reduction.
PG  - 252-61
LID - 10.1123/ijsnem.2014-0061 [doi]
AB  - The purpose was to determine the effect of carbohydrate (CHO) mouth rinse on 
      maximal voluntary contraction (MVC) and neuromuscular output in a fatigued state. 
      It was hypothesized that CHO mouth rinse would potentiate torque output in a 
      fatigued state. In a double-blind, cross-over design, 12 competitive male 
      athletes (9 rowers, 1 cyclist, 1 runner and 1 volleyball player) initially 
      performed 3 x 5 s MVC isometric knee extensions followed by a 50% MVC contraction 
      until volitional exhaustion, with quadriceps muscle activity measured via 
      electromyography (EMG). Immediately after, either an 8% CHO maltodextrin (WASH), 
      or noncaloric artificial sweetener (PLA) was mouth rinsed for 10sec, before 3 x 5 
      s final MVCs. Fatigue caused a significant decline in post fatigue MVC trial 1 
      for 3 s average torque (p = .03) and peak torque (p = .02) for PLA. This fatigue 
      related decline in torque was not noticed for WASH, with a 2.5% and 3.5% less 
      attenuation in peak and average torque, respectively in post fatigue MVC1 
      compared with PLA. The effect size for MVC trial 1 between WASH/PLA was seen to 
      be small positive (ES = 0.22; 55% likelihood of positive). Overall for EMG RMS, 
      there were no significant differences between PLA and WASH among all muscles. EMG 
      median frequency showed comparable results between conditions with significant 
      reductions due to fatigue. Taken together, this evidence suggests that the 
      attenuation of torque post fatigue was less for CHO mouth rinse than a placebo. 
      Even though the gains were marginal, these discoveries may play an important role 
      in sport performance, as small performance effects can have significant outcomes 
      in real-world competitions.
FAU - Jensen, Matt
AU  - Jensen M
AD  - School of Exercise Science, Physical and Health Education, University of 
      Victoria, Victoria, BC, Canada.
FAU - Stellingwerff, Trent
AU  - Stellingwerff T
FAU - Klimstra, Marc
AU  - Klimstra M
LA  - eng
PT  - Journal Article
PT  - Randomized Controlled Trial
PT  - Research Support, Non-U.S. Gov't
DEP - 20140908
PL  - United States
TA  - Int J Sport Nutr Exerc Metab
JT  - International journal of sport nutrition and exercise metabolism
JID - 100939812
RN  - 0 (Mouthwashes)
RN  - 0 (Polysaccharides)
RN  - 7CVR7L4A2D (maltodextrin)
SB  - IM
MH  - Adult
MH  - Athletes
MH  - Cross-Over Studies
MH  - Double-Blind Method
MH  - Electromyography
MH  - Humans
MH  - Isometric Contraction/*drug effects
MH  - Male
MH  - Mouthwashes/*administration & dosage
MH  - Muscle Fatigue/*drug effects/physiology
MH  - Muscle Strength/*drug effects
MH  - Polysaccharides/*administration & dosage
MH  - Quadriceps Muscle
MH  - Sports/physiology
MH  - Torque
EDAT- 2014/09/10 06:00
MHDA- 2016/03/31 06:00
CRDT- 2014/09/10 06:00
PHST- 2014/09/10 06:00 [entrez]
PHST- 2014/09/10 06:00 [pubmed]
PHST- 2016/03/31 06:00 [medline]
AID - 2014-0061 [pii]
AID - 10.1123/ijsnem.2014-0061 [doi]
PST - ppublish
SO  - Int J Sport Nutr Exerc Metab. 2015 Jun;25(3):252-61. doi: 
      10.1123/ijsnem.2014-0061. Epub 2014 Sep 8.