PMID- 33919043
OWN - NLM
STAT- MEDLINE
DCOM- 20210527
LR  - 20240229
IS  - 2072-6643 (Electronic)
IS  - 2072-6643 (Linking)
VI  - 13
IP  - 5
DP  - 2021 Apr 21
TI  - The Effects of Pre-Game Carbohydrate Intake on Running Performance and Substrate 
      Utilisation during Simulated Gaelic Football Match Play.
LID - 10.3390/nu13051392 [doi]
LID - 1392
AB  - BACKGROUND: Previous research has reported that elite Gaelic football players' 
      carbohydrate (CHO) intakes are sub-optimal, especially, in the lead up to 
      competitive matches. Despite clear decrements in running performance across elite 
      Gaelic football matches, there are no studies that have investigated nutrition 
      interventions on match-related Gaelic football performance. The aim of this study 
      was to determine whether a higher-CHO diet in line with sports nutrition 
      guidelines can improve Gaelic football-related performance compared to lower CHO 
      intakes previously observed in Gaelic footballers. METHODS: Twelve Gaelic 
      football players completed a Gaelic football simulation protocol (GFSP) on two 
      occasions after consuming a high-CHO diet (7 g.kg(-1)) (HCHO) or an 
      energy-matched lower-CHO diet (3.5 g.kg(-1)) (L-CHO) for 48 h. Movement demands 
      and heart rate were measured using portable global positioning systems devices. 
      Countermovement jump height (CMJ) and repeated-sprint ability (RSA) were measured 
      throughout each trial. Expired respiratory gases were collected throughout the 
      trial using a portable gas analyser. Blood samples were taken at rest, half-time, 
      and post-simulation. RESULTS: There was no significant difference in total 
      distance (p = 0.811; eta(2) = 0.005) or high-speed running distance (HSRD) covered 
      between both trials. However, in the second half of the HCHO trial, HSRD was 
      significantly greater compared to the second half of the LCHO trial (p = 0.015). 
      Sprint distance covered during GFSP was significantly greater in HCHO (8.1 +/- 3.5 
      m.min(-1)) compared with LCHO (6.4 +/- 3.2 m.min(-1)) (p = 0.011; eta(2) = 0.445). 
      RSA performance (p < 0.0001; eta(2) = 0.735) and lower body power (CMJ) (p < 
      0.0001; eta(2) = 0.683) were significantly greater during the HCHO trial compared 
      to LCHO. Overall CHO oxidation rates were significantly greater under HCHO 
      conditions compared to LCHO (3.3 +/- 0.5 vs. 2.7 +/- 0.6 g.min(-1)) (p < 0.001; eta(2) 
      = 0.798). Blood lactate concentrations were significantly higher during HCHO 
      trial versus LCHO (p = 0.026; eta(2) = 0.375). There were no significant 
      differences in plasma glucose, non-esterified fatty acids (NEFAs), and glycerol 
      concentration between trials. In both trials, all blood metabolites were 
      significantly elevated at half-time and post-trial compared to pre-trial. 
      CONCLUSION: These findings indicate that a higher-CHO diet can reduce declines in 
      physical performance during simulated Gaelic football match play.
FAU - O'Brien, Luke
AU  - O'Brien L
AD  - School of Health Sciences, Liverpool Hope University, Liverpool L16 9JD, UK.
FAU - Collins, Kieran
AU  - Collins K
AUID- ORCID: 0000-0003-1653-2071
AD  - Gaelic Sports Research Centre, Technological University of Dublin, Tallaght, D24 
      FKT9 Dublin, Ireland.
FAU - Webb, Richard
AU  - Webb R
AUID- ORCID: 0000-0001-9591-585X
AD  - School of Health Sciences, Liverpool Hope University, Liverpool L16 9JD, UK.
FAU - Davies, Ian
AU  - Davies I
AD  - Research Institute of Sport and Exercise Science, Liverpool John Moores 
      University, Liverpool L3 5AF, UK.
FAU - Doran, Dominic
AU  - Doran D
AD  - Gaelic Sports Research Centre, Technological University of Dublin, Tallaght, D24 
      FKT9 Dublin, Ireland.
AD  - Research Institute of Sport and Exercise Science, Liverpool John Moores 
      University, Liverpool L3 5AF, UK.
FAU - Amirabdollahian, Farzad
AU  - Amirabdollahian F
AUID- ORCID: 0000-0003-1937-4128
AD  - School of Health Sciences, Liverpool Hope University, Liverpool L16 9JD, UK.
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
DEP - 20210421
PL  - Switzerland
TA  - Nutrients
JT  - Nutrients
JID - 101521595
RN  - 0 (Blood Glucose)
RN  - 0 (Dietary Carbohydrates)
SB  - IM
MH  - Humans
MH  - Male
MH  - Young Adult
MH  - *Athletic Performance/physiology
MH  - Blood Glucose/metabolism
MH  - *Dietary Carbohydrates/pharmacology
MH  - Energy Intake
MH  - *Feeding Behavior/drug effects
MH  - Heart Rate/physiology
MH  - Lipid Metabolism/drug effects
MH  - Metabolome
MH  - Oxidation-Reduction
MH  - Respiration/drug effects
MH  - *Running/physiology
MH  - Substrate Specificity/drug effects
MH  - *Team Sports
PMC - PMC8142997
OTO - NOTNLM
OT  - Gaelic games
OT  - carbohydrate
OT  - running performance
OT  - substrate utilisation
COIS- The authors declare no conflict of interest.
EDAT- 2021/05/01 06:00
MHDA- 2021/05/27 06:00
PMCR- 2021/04/21
CRDT- 2021/04/30 01:11
PHST- 2021/03/11 00:00 [received]
PHST- 2021/04/16 00:00 [revised]
PHST- 2021/04/20 00:00 [accepted]
PHST- 2021/04/30 01:11 [entrez]
PHST- 2021/05/01 06:00 [pubmed]
PHST- 2021/05/27 06:00 [medline]
PHST- 2021/04/21 00:00 [pmc-release]
AID - nu13051392 [pii]
AID - nutrients-13-01392 [pii]
AID - 10.3390/nu13051392 [doi]
PST - epublish
SO  - Nutrients. 2021 Apr 21;13(5):1392. doi: 10.3390/nu13051392.