PMID- 30300016
OWN - NLM
STAT- MEDLINE
DCOM- 20190605
LR  - 20190605
IS  - 1555-0273 (Electronic)
IS  - 1555-0265 (Linking)
VI  - 14
IP  - 5
DP  - 2019 May 1
TI  - Effects of Carbohydrate, Caffeine, and Guarana on Cognitive Performance, 
      Perceived Exertion, and Shooting Performance in High-Level Athletes.
PG  - 576-582
LID - 10.1123/ijspp.2017-0865 [doi]
AB  - Purpose: To investigate the effect of ingesting carbohydrate (CHO), caffeine 
       (CAF), and a guarana complex (GUAc) during a running exercise on cognitive 
      performance, rating of perceived exertion (RPE), and shooting performance in 
      high-level modern pentathlon athletes. Methods: A total of 10 athletes completed 
      4 counterbalanced sessions within a 2-wk period, corresponding to ingestions of 
      CHO (30 g), GUAc (300 mg), CAF (200 mg), or placebo. The exercise involved a 
      40-min run on a treadmill at a steady speed, previously determined as a "somewhat 
      hard" exercise (RPE 13). Shooting and cognitive performance (Simon task) were 
      assessed in 3 phases: before exercise and ingestion, before exercise and after 
      half ingestion, and after exercise and full ingestion. Drinks were consumed 40 
      min (250 mL) and 5 min (125 mL) prior to exercise and after 20 min of running 
      (125 mL). RPE was assessed at 10-min intervals during exercise. Results: There 
      was an interaction between drink and exercise on mean reaction time (P = .01, etap2 
      = .41 ) and a drink effect on RPE (P = .01, etap2 = .15 ). CHO, CAF, and GUAc 
      enhanced the speed of information processing after exercise (P = .003, P = .004, 
      and P = .04, respectively), but only CAF and GUAc decreased RPE (P = .002 and 
      P = .02, respectively). Conclusion: The results highlight a beneficial effect of 
      nutritional supplements on information processing and RPE. This finding is 
      particularly interesting as decision-making processes are crucial in the 
      performance of many sports.
FAU - Pomportes, Laura
AU  - Pomportes L
FAU - Brisswalter, Jeanick
AU  - Brisswalter J
FAU - Hays, Arnaud
AU  - Hays A
FAU - Davranche, Karen
AU  - Davranche K
LA  - eng
PT  - Journal Article
DEP - 20190411
PL  - United States
TA  - Int J Sports Physiol Perform
JT  - International journal of sports physiology and performance
JID - 101276430
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Plant Preparations)
RN  - 3G6A5W338E (Caffeine)
SB  - IM
MH  - Adolescent
MH  - Athletes
MH  - *Athletic Performance
MH  - Caffeine/*administration & dosage
MH  - Cognition
MH  - Dietary Carbohydrates/*administration & dosage
MH  - Dietary Supplements
MH  - Female
MH  - Humans
MH  - Male
MH  - Paullinia/chemistry
MH  - *Physical Exertion
MH  - Plant Preparations/*administration & dosage
MH  - Reaction Time
MH  - Running
MH  - *Sports Nutritional Physiological Phenomena
MH  - Young Adult
OTO - NOTNLM
OT  - cognition
OT  - exercise
OT  - ingestion
OT  - nutrition
OT  - response inhibition
EDAT- 2018/10/10 06:00
MHDA- 2019/06/06 06:00
CRDT- 2018/10/10 06:00
PHST- 2018/10/10 06:00 [pubmed]
PHST- 2019/06/06 06:00 [medline]
PHST- 2018/10/10 06:00 [entrez]
AID - 10.1123/ijspp.2017-0865 [doi]
PST - ppublish
SO  - Int J Sports Physiol Perform. 2019 May 1;14(5):576-582. doi: 
      10.1123/ijspp.2017-0865. Epub 2019 Apr 11.