PMID- 29266092
OWN - NLM
STAT- MEDLINE
DCOM- 20190311
LR  - 20190311
IS  - 1530-0315 (Electronic)
IS  - 0195-9131 (Linking)
VI  - 50
IP  - 5
DP  - 2018 May
TI  - Effect of Carbohydrate Mouth Rinse on Performance after Prolonged Submaximal 
      Cycling.
PG  - 1031-1038
LID - 10.1249/MSS.0000000000001529 [doi]
AB  - Previous studies have shown improved shorter duration ( approximately 1 h) performance with 
      carbohydrate (CHO) mouth rinsing (WASH), especially in overnight 
      fasted/non-fuelled subjects. PURPOSE: To determine the effect of WASH on cycling 
      time trial (TT) performance and muscle activity (EMG) after 2 h of submaximal 
      cycling while receiving CHO (FED). METHODS: In a double-blind, placebo-controlled 
      crossover design, 10 well-trained males cyclists (V O2max: 65 mL.kg.min) 
      completed two experimental trials. Each trial consisted of a standardized 
      pretrial snack (2 h prior) followed by 120 min of steady-state (SS) cycling ( approximately 60% 
      V O2max) followed by an approximately 30-min TT, randomized as follows: 1) 30 g 
      CHO.h during SS + WASH during TT (every 20% of TT) (FEDWASH); 2) 30 g CHO.h 
      during SS + placebo (PLA) wash during TT (FEDPLA). RESULTS: Although FEDWASH was 
      not significantly different than FEDPLA (P = 0.51), there was a 1.7% (90% 
      confidence interval, +6.4% to -3.2%; ES, 0.21) decrease in TT time (35 s) for 
      FEDWASH compared with FEDPLA, with qualitative probabilities of a 60% positive 
      and 23% trivial outcome. For EMG, soleus showed significant increase, whereas 
      medial gastrocnemius showed significant decrease in muscle recruitment from the 
      beginning 20% TT segment to the last 20% only in the FEDPLA condition, which 
      coincided with a slower (P = 0.01) last 20% of the TT in FEDPLA versus FEDWASH. 
      CONCLUSIONS: Contrary to previous studies, this investigation utilized conditions 
      of high ecological validity including a pretrial snack and CHO during SS. 
      Significant changes in muscle recruitment and time over the last 20% of the TT, 
      along with an average 1.7% improvement in TT time, suggest CHO mouth rinse helps 
      maintain power output late in TT compared with placebo. Although marginal gains 
      were achieved with a CHO mouth rinse (35 s), small performance effects can have 
      significant outcomes in real-world competitions.
FAU - Jensen, Matt
AU  - Jensen M
AD  - School of Exercise Science, University of Victoria, Victoria, BC, CANADA.
AD  - School of Exercise Science, University of Victoria, Victoria, BC, CANADA.
FAU - Klimstra, Marc
AU  - Klimstra M
AD  - School of Exercise Science, University of Victoria, Victoria, BC, CANADA.
AD  - School of Exercise Science, University of Victoria, Victoria, BC, CANADA.
FAU - Sporer, Ben
AU  - Sporer B
AD  - School of Exercise Science, University of Victoria, Victoria, BC, CANADA.
AD  - School of Exercise Science, University of Victoria, Victoria, BC, CANADA.
FAU - Stellingwerff, Trent
AU  - Stellingwerff T
AD  - School of Exercise Science, University of Victoria, Victoria, BC, CANADA.
AD  - School of Exercise Science, University of Victoria, Victoria, BC, CANADA.
LA  - eng
PT  - Journal Article
PT  - Randomized Controlled Trial
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Med Sci Sports Exerc
JT  - Medicine and science in sports and exercise
JID - 8005433
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Mouthwashes)
SB  - IM
MH  - Adult
MH  - Athletic Performance/*physiology
MH  - Bicycling/*physiology
MH  - Cross-Over Studies
MH  - Dietary Carbohydrates/*administration & dosage
MH  - Double-Blind Method
MH  - Fasting
MH  - Humans
MH  - Male
MH  - *Mouthwashes
MH  - Muscle, Skeletal/*physiology
MH  - *Sports Nutritional Physiological Phenomena
MH  - Young Adult
EDAT- 2017/12/22 06:00
MHDA- 2019/03/12 06:00
CRDT- 2017/12/22 06:00
PHST- 2017/12/22 06:00 [pubmed]
PHST- 2019/03/12 06:00 [medline]
PHST- 2017/12/22 06:00 [entrez]
AID - 10.1249/MSS.0000000000001529 [doi]
PST - ppublish
SO  - Med Sci Sports Exerc. 2018 May;50(5):1031-1038. doi: 
      10.1249/MSS.0000000000001529.