PMID- 28952831
OWN - NLM
STAT- MEDLINE
DCOM- 20180612
LR  - 20180612
IS  - 1555-0273 (Electronic)
IS  - 1555-0265 (Linking)
VI  - 13
IP  - 4
DP  - 2018 Apr 1
TI  - Perception of Breakfast Ingestion Enhances High-Intensity Cycling Performance.
PG  - 504-509
LID - 10.1123/ijspp.2017-0318 [doi]
AB  - PURPOSE: To examine the effect on short-duration, high-intensity cycling 
      time-trial (TT) performance when a semisolid breakfast containing carbohydrate 
      (CHO) or a taste- and texture-matched placebo is ingested 90 min preexercise 
      compared with a water (WAT) control. METHODS: A total of 13 well-trained cyclists 
      (mean [SD]: age = 25 [8] y, body mass = 71.1 [5.9] kg, height = 1.76 [0.04] m, 
      maximum power output = 383 [46] W, and peak oxygen uptake = 4.42 [0.53] 
      L.min(-1)) performed 3 experimental trials examining breakfast ingestion 90 min 
      before a 10-min steady-state cycle (60% maximum power output) and an  approximately 20-min TT 
      (to complete a workload target of 376 [36] kJ). Subjects consumed either WAT, a 
      semisolid CHO breakfast (2 g carbohydrate CHO.kg(-1) body mass), or a taste- and 
      texture-matched placebo (PLA). Blood lactate and glucose concentrations were 
      measured periodically throughout the rest and exercise periods. RESULTS: The TT 
      was completed more quickly in CHO (1120 [69] s; P = .006) and PLA (1112 [50] s; 
      P = .030) compared with WAT (1146 [74] s). Ingestion of CHO caused an increase in 
      blood glucose concentration throughout the rest period in CHO (peak at 30-min 
      rest = 7.37 [1.10] mmol.L(-1); P < .0001) before dropping below baseline levels 
      after the steady-state cycling. CONCLUSION: A short-duration cycling TT was 
      completed more quickly when subjects perceived that they had consumed breakfast 
      (PLA or CHO) 90 min prior to the start of the exercise. The improvement in 
      performance is likely attributable to a psychological rather than physiological 
      effect.
FAU - Mears, Stephen A
AU  - Mears SA
FAU - Dickinson, Kathryn
AU  - Dickinson K
FAU - Bergin-Taylor, Kurt
AU  - Bergin-Taylor K
FAU - Dee, Reagan
AU  - Dee R
FAU - Kay, Jack
AU  - Kay J
FAU - James, Lewis J
AU  - James LJ
LA  - eng
PT  - Journal Article
PT  - Randomized Controlled Trial
DEP - 20180514
PL  - United States
TA  - Int J Sports Physiol Perform
JT  - International journal of sports physiology and performance
JID - 101276430
RN  - 0 (Blood Glucose)
RN  - 0 (Dietary Carbohydrates)
RN  - 33X04XA5AT (Lactic Acid)
SB  - IM
MH  - Adult
MH  - Athletic Performance/physiology/*psychology
MH  - Bicycling/physiology/*psychology
MH  - Blood Glucose/metabolism
MH  - *Breakfast
MH  - Cross-Over Studies
MH  - Dietary Carbohydrates/*administration & dosage
MH  - Exercise Test
MH  - Humans
MH  - Lactic Acid/blood
MH  - Male
MH  - *Perception
MH  - Placebo Effect
MH  - Single-Blind Method
OTO - NOTNLM
OT  - carbohydrate
OT  - exercise
OT  - fasted
OT  - placebo
OT  - time trial
EDAT- 2017/09/28 06:00
MHDA- 2018/06/13 06:00
CRDT- 2017/09/28 06:00
PHST- 2017/09/28 06:00 [pubmed]
PHST- 2018/06/13 06:00 [medline]
PHST- 2017/09/28 06:00 [entrez]
AID - 10.1123/ijspp.2017-0318 [doi]
PST - ppublish
SO  - Int J Sports Physiol Perform. 2018 Apr 1;13(4):504-509. doi: 
      10.1123/ijspp.2017-0318. Epub 2018 May 14.