The influence of a 12% carbohydrate-electrolyte beverage on self-paced soccer-specific exercise performance

Liam D. Harper, Emma J. Stevenson, Ian Rollo, Mark Russell

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Objectives To assess the physiological and performance effects of a 12% carbohydrate-electrolyte beverage consumed at practically applicable time-points (i.e., before each half) throughout simulated soccer match-play. Design Randomised, counterbalanced, crossover. Methods Fed players (n = 15) performed 90-min of soccer-specific exercise (including self-paced exercise at the end of each half). Players consumed carbohydrate-electrolyte (CHO; 60 g × 500 ml−1, Na+ 205 mg × 500 ml−1), placebo-electrolyte (PL) or water (Wat) beverages at the end of the warm-up (250 ml) and half-time (250 ml plus ad-libitum water). Blood was drawn before each half and every 15-min during exercise. Physical (15-m sprinting, countermovement jumps, self-paced distance, acceleration/deceleration count), technical (dribbling) and cognitive (memory, attention, decision-making) performance was assessed. Ratings of perceived exertion (RPE) and abdominal discomfort were measured. Results Against Wat and PL, CHO increased (all p < 0.05) mean accelerations >1.5 m·s−2 during self-paced exercise (>+25%) and dribbling speed from 60-min onwards (>+3%). Mean sprinting speed improved (+2.7%) in CHO versus Wat. Blood glucose increased before and during each half in CHO versus PL and Wat (all p < 0.05). A 27% decline in glycaemia occurred at 60-min in CHO. RPE was comparable between trials. Cognition reduced post-exercise (p < 0.05); this decline was not attenuated by CHO. Abdominal discomfort increased during exercise but was similar between trials. Conclusions Using more realistic fluid ingestion timings than have been examined previously, consuming a 12% carbohydrate-electrolyte beverage increased blood glucose, self-paced exercise performance, and improved dribbling speed in the final 30-min of exercise compared to water and placebo. Carbohydrates did not attenuate post-exercise reductions in cognition
LanguageEnglish
Pages1123-1129
Number of pages7
JournalJournal of Science and Medicine in Sport
Volume20
Issue number12
Early online date21 Apr 2017
DOIs
Publication statusPublished - 1 Dec 2017

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Soccer
Beverages
Electrolytes
Carbohydrates
Water
Placebos
Cognition
Blood Glucose
Deceleration
Decision Making
Eating

Cite this

@article{77a3ad33fa9b49d097ebaafb0219bfe5,
title = "The influence of a 12{\%} carbohydrate-electrolyte beverage on self-paced soccer-specific exercise performance",
abstract = "Objectives To assess the physiological and performance effects of a 12{\%} carbohydrate-electrolyte beverage consumed at practically applicable time-points (i.e., before each half) throughout simulated soccer match-play. Design Randomised, counterbalanced, crossover. Methods Fed players (n = 15) performed 90-min of soccer-specific exercise (including self-paced exercise at the end of each half). Players consumed carbohydrate-electrolyte (CHO; 60 g × 500 ml−1, Na+ 205 mg × 500 ml−1), placebo-electrolyte (PL) or water (Wat) beverages at the end of the warm-up (250 ml) and half-time (250 ml plus ad-libitum water). Blood was drawn before each half and every 15-min during exercise. Physical (15-m sprinting, countermovement jumps, self-paced distance, acceleration/deceleration count), technical (dribbling) and cognitive (memory, attention, decision-making) performance was assessed. Ratings of perceived exertion (RPE) and abdominal discomfort were measured. Results Against Wat and PL, CHO increased (all p < 0.05) mean accelerations >1.5 m·s−2 during self-paced exercise (>+25{\%}) and dribbling speed from 60-min onwards (>+3{\%}). Mean sprinting speed improved (+2.7{\%}) in CHO versus Wat. Blood glucose increased before and during each half in CHO versus PL and Wat (all p < 0.05). A 27{\%} decline in glycaemia occurred at 60-min in CHO. RPE was comparable between trials. Cognition reduced post-exercise (p < 0.05); this decline was not attenuated by CHO. Abdominal discomfort increased during exercise but was similar between trials. Conclusions Using more realistic fluid ingestion timings than have been examined previously, consuming a 12{\%} carbohydrate-electrolyte beverage increased blood glucose, self-paced exercise performance, and improved dribbling speed in the final 30-min of exercise compared to water and placebo. Carbohydrates did not attenuate post-exercise reductions in cognition",
keywords = "Football, Skill, Sucrose, Maltodextrin, Isomaltulose",
author = "Harper, {Liam D.} and Stevenson, {Emma J.} and Ian Rollo and Mark Russell",
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language = "English",
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pages = "1123--1129",
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The influence of a 12% carbohydrate-electrolyte beverage on self-paced soccer-specific exercise performance. / Harper, Liam D.; Stevenson, Emma J.; Rollo, Ian; Russell, Mark.

In: Journal of Science and Medicine in Sport, Vol. 20, No. 12, 01.12.2017, p. 1123-1129.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The influence of a 12% carbohydrate-electrolyte beverage on self-paced soccer-specific exercise performance

AU - Harper, Liam D.

AU - Stevenson, Emma J.

AU - Rollo, Ian

AU - Russell, Mark

PY - 2017/12/1

Y1 - 2017/12/1

N2 - Objectives To assess the physiological and performance effects of a 12% carbohydrate-electrolyte beverage consumed at practically applicable time-points (i.e., before each half) throughout simulated soccer match-play. Design Randomised, counterbalanced, crossover. Methods Fed players (n = 15) performed 90-min of soccer-specific exercise (including self-paced exercise at the end of each half). Players consumed carbohydrate-electrolyte (CHO; 60 g × 500 ml−1, Na+ 205 mg × 500 ml−1), placebo-electrolyte (PL) or water (Wat) beverages at the end of the warm-up (250 ml) and half-time (250 ml plus ad-libitum water). Blood was drawn before each half and every 15-min during exercise. Physical (15-m sprinting, countermovement jumps, self-paced distance, acceleration/deceleration count), technical (dribbling) and cognitive (memory, attention, decision-making) performance was assessed. Ratings of perceived exertion (RPE) and abdominal discomfort were measured. Results Against Wat and PL, CHO increased (all p < 0.05) mean accelerations >1.5 m·s−2 during self-paced exercise (>+25%) and dribbling speed from 60-min onwards (>+3%). Mean sprinting speed improved (+2.7%) in CHO versus Wat. Blood glucose increased before and during each half in CHO versus PL and Wat (all p < 0.05). A 27% decline in glycaemia occurred at 60-min in CHO. RPE was comparable between trials. Cognition reduced post-exercise (p < 0.05); this decline was not attenuated by CHO. Abdominal discomfort increased during exercise but was similar between trials. Conclusions Using more realistic fluid ingestion timings than have been examined previously, consuming a 12% carbohydrate-electrolyte beverage increased blood glucose, self-paced exercise performance, and improved dribbling speed in the final 30-min of exercise compared to water and placebo. Carbohydrates did not attenuate post-exercise reductions in cognition

AB - Objectives To assess the physiological and performance effects of a 12% carbohydrate-electrolyte beverage consumed at practically applicable time-points (i.e., before each half) throughout simulated soccer match-play. Design Randomised, counterbalanced, crossover. Methods Fed players (n = 15) performed 90-min of soccer-specific exercise (including self-paced exercise at the end of each half). Players consumed carbohydrate-electrolyte (CHO; 60 g × 500 ml−1, Na+ 205 mg × 500 ml−1), placebo-electrolyte (PL) or water (Wat) beverages at the end of the warm-up (250 ml) and half-time (250 ml plus ad-libitum water). Blood was drawn before each half and every 15-min during exercise. Physical (15-m sprinting, countermovement jumps, self-paced distance, acceleration/deceleration count), technical (dribbling) and cognitive (memory, attention, decision-making) performance was assessed. Ratings of perceived exertion (RPE) and abdominal discomfort were measured. Results Against Wat and PL, CHO increased (all p < 0.05) mean accelerations >1.5 m·s−2 during self-paced exercise (>+25%) and dribbling speed from 60-min onwards (>+3%). Mean sprinting speed improved (+2.7%) in CHO versus Wat. Blood glucose increased before and during each half in CHO versus PL and Wat (all p < 0.05). A 27% decline in glycaemia occurred at 60-min in CHO. RPE was comparable between trials. Cognition reduced post-exercise (p < 0.05); this decline was not attenuated by CHO. Abdominal discomfort increased during exercise but was similar between trials. Conclusions Using more realistic fluid ingestion timings than have been examined previously, consuming a 12% carbohydrate-electrolyte beverage increased blood glucose, self-paced exercise performance, and improved dribbling speed in the final 30-min of exercise compared to water and placebo. Carbohydrates did not attenuate post-exercise reductions in cognition

KW - Football

KW - Skill

KW - Sucrose

KW - Maltodextrin

KW - Isomaltulose

U2 - 10.1016/j.jsams.2017.04.015

DO - 10.1016/j.jsams.2017.04.015

M3 - Article

VL - 20

SP - 1123

EP - 1129

JO - Journal of Science and Medicine in Sport

T2 - Journal of Science and Medicine in Sport

JF - Journal of Science and Medicine in Sport

SN - 1440-2440

IS - 12

ER -