PMID- 27686403
OWN - NLM
STAT- MEDLINE
DCOM- 20170214
LR  - 20170214
IS  - 1536-7290 (Electronic)
IS  - 1536-7290 (Linking)
VI  - 16
IP  - 8
DP  - 2016 Nov
TI  - Influence of a caffeine mouth rinse on sprint cycling following glycogen 
      depletion.
PG  - 1087-94
LID - 10.1080/17461391.2016.1165739 [doi]
AB  - Attenuated performance during intense exercise with limited endogenous 
      carbohydrate (CHO) is well documented. Therefore, this study examined whether 
      caffeine (CAF) mouth rinsing would augment performance during repeated sprint 
      cycling in participants with reduced endogenous CHO. Eight recreationally active 
      males (aged 23 +/- 2 yr, body mass 84 +/- 4 kg, stature 178 +/- 7 cm) participated in 
      this randomized, single-blind, repeated-measures crossover investigation. 
      Following familiarization, participants attended two separate evening glycogen 
      depletion sessions. The following morning, participants completed five, 6 s 
      sprints on a cycle ergometer (separated by 24 s active recovery), with mouth 
      rinsing either (1) a placebo solution or (2) a 2% CAF solution. During a fifth 
      visit, participants completed the sprints without prior glycogen depletion. 
      Repeated-measures ANOVA identified significant main effect of condition (CAF, 
      placebo, and control [P < .05; effect size (ES) = 0.850-0.897]), sprint (1-5 
      [P < .005; ES = 0.871-0.986]), and interaction (condition x sprint [P < .05; 
      ES = 0.831-0.846]), for peak and mean power. The control condition exhibited the 
      highest peak power (overall mean 760 +/- 77 W) and mean power (overall mean 
      699 +/- 83W) over the five sprints (P < .001 in both instances). CAF peak power 
      (overall mean 643 +/- 79 W) was significantly greater than placebo (mean 573 +/- 79 W 
      [P < .05; ES = 0.850]). Additionally, CAF mean power (overall mean 589 +/- 80 W) 
      was significantly greater than placebo (519 +/- 82 W [P < .05; ES = 0.397]). These 
      data indicate that mouth rinsing a caffeinated solution reduces decrements caused 
      by CHO reduction, which may benefit athletes wishing to train in a low-CHO state.
FAU - Kizzi, Joseph
AU  - Kizzi J
AD  - a School of Human Sciences , London Metropolitan University , London , UK.
FAU - Sum, Alvin
AU  - Sum A
AD  - a School of Human Sciences , London Metropolitan University , London , UK.
FAU - Houston, Fraser E
AU  - Houston FE
AD  - b Department of Applied Physiology and Kinesiology , University of Florida , 
      Gainesville , FL , USA.
FAU - Hayes, Lawrence D
AU  - Hayes LD
AD  - c Department of Medical and Sport Sciences , University of Cumbria , Lancaster , 
      UK.
LA  - eng
PT  - Journal Article
PT  - Randomized Controlled Trial
DEP - 20160328
PL  - Germany
TA  - Eur J Sport Sci
JT  - European journal of sport science
JID - 101146739
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Mouthwashes)
RN  - 3G6A5W338E (Caffeine)
SB  - IM
MH  - Adult
MH  - Athletic Performance/*physiology
MH  - Bicycling/*physiology
MH  - Caffeine/*pharmacology
MH  - Cross-Over Studies
MH  - Dietary Carbohydrates
MH  - Exercise Test
MH  - Humans
MH  - Male
MH  - Mouthwashes/*pharmacology
MH  - Myalgia
MH  - Pain Perception/drug effects
MH  - Young Adult
OTO - NOTNLM
OT  - Anaerobic
OT  - carbohydrate
OT  - ergogenic
OT  - high intensity
OT  - repeated sprint exercise
EDAT- 2016/10/01 06:00
MHDA- 2017/02/15 06:00
CRDT- 2016/10/01 06:00
PHST- 2016/10/01 06:00 [entrez]
PHST- 2016/10/01 06:00 [pubmed]
PHST- 2017/02/15 06:00 [medline]
AID - 10.1080/17461391.2016.1165739 [doi]
PST - ppublish
SO  - Eur J Sport Sci. 2016 Nov;16(8):1087-94. doi: 10.1080/17461391.2016.1165739. Epub 
      2016 Mar 28.