Impact Of “Extra-time” On Performance And Physiological Responses To Simulated Soccer Match-play

Liam Harper, Paul Parker, Robert Hunter, Stuart Goodall, Kevin Thomas, Glyn Howatson, Daniel J. West, Emma J. Stevenson, Mark Russell

Research output: Contribution to journalMeeting Abstract

Abstract

The physiological and performance responses to 90 min of soccer-specific exercise are well known. However, the responses to 120 min of soccer-specific exercise (i.e., inclusion of an extra-time period; ET) are unclear. This is despite the importance of ET in determining match outcomes in tournament match-play. PURPOSE: To profile the performance and physiological responses to 120 min of simulated soccer match-play. METHODS: Following protocol habituation, 12 amateur soccer players (22 ± 3 y; estimated V[Combining Dot Above]O2max: 55.8 ± 1.6 mL·kg·min-1) completed 120 min of soccer-specific exercise, covering 14.4 km. Performance indices (15 m and 20 m sprint speeds, countermovement jump height (CMJ), dribble speed and precision) were measured during the protocol. Blood was collected during exercise to assess blood glucose and lactate, plasma glycerol, non-esterified fatty acids (NEFA), and creatine kinase (CK) concentrations. Core temperature (Tcore) and perceived exertion (RPE) were also measured. RESULTS: Compared to baseline, 20 m sprint speed was reduced after ET (–8 ± 8%) and 45 min (–6 ± 8%, p<0.05). CMJ height was reduced after ET compared to baseline (–11 ± 10% p<0.05). Sprint speeds over 15 m were reduced during ET compared to all time-points (–3 ± 4% vs. 76-90 min, p<0.05). Glucose concentrations were lower during ET (3.9 ± 0.7 mmol·L-1) compared to all time-points, except the first 15 min of the second half (p<0.05). Lactate concentrations were lower in ET than the first half (–2.5 ± 2.2 mmol·L-1). Glycerol and NEFA concentrations were higher (p<0.05) in ET compared to 90 min (+59 ± 42% and +37 ± 24%, respectively). ET increased RPE relative to the first 90 min (16 ± 3 vs. 13 ± 2, p<0.05) and Tcore was elevated during the last 15 min of ET (38.7 ± 0.8°C) compared to the first 15 min of ET (38.1 ± 0.7°C, p<0.05) and the first 15 min of the second half (38.0 ± 0.1°C, p<0.05). CONCLUSIONS: The ET period negatively impacts performance and physiological responses compared to 90 min of simulated match-play. Reductions in blood glucose and lactate with increases in plasma NEFA and glycerol may indicate endogenous CHO depletion and increased fat oxidation during ET. Future research is required to investigate interventions that attenuate decrements in performance and physiological perturbations
LanguageEnglish
Pages667
Number of pages1
JournalMedicine and Science in Sports and Exercise
Volume48
Issue number5S
DOIs
Publication statusPublished - May 2016
Externally publishedYes
EventAmerican College of Sports Medicine Annual Meeting - Boston, United States
Duration: 31 May 20164 Jun 2019
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Soccer
Glycerol
Lactic Acid
Fatty Acids
Blood Glucose
Creatine Kinase
Fats
Glucose
Temperature

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Harper, Liam ; Parker, Paul ; Hunter, Robert ; Goodall, Stuart ; Thomas, Kevin ; Howatson, Glyn ; West, Daniel J. ; Stevenson, Emma J. ; Russell, Mark. / Impact Of “Extra-time” On Performance And Physiological Responses To Simulated Soccer Match-play. In: Medicine and Science in Sports and Exercise. 2016 ; Vol. 48, No. 5S. pp. 667.
@article{aa57ec07bd454ab88b39b13622a26ec9,
title = "Impact Of “Extra-time” On Performance And Physiological Responses To Simulated Soccer Match-play",
abstract = "The physiological and performance responses to 90 min of soccer-specific exercise are well known. However, the responses to 120 min of soccer-specific exercise (i.e., inclusion of an extra-time period; ET) are unclear. This is despite the importance of ET in determining match outcomes in tournament match-play. PURPOSE: To profile the performance and physiological responses to 120 min of simulated soccer match-play. METHODS: Following protocol habituation, 12 amateur soccer players (22 ± 3 y; estimated V[Combining Dot Above]O2max: 55.8 ± 1.6 mL·kg·min-1) completed 120 min of soccer-specific exercise, covering 14.4 km. Performance indices (15 m and 20 m sprint speeds, countermovement jump height (CMJ), dribble speed and precision) were measured during the protocol. Blood was collected during exercise to assess blood glucose and lactate, plasma glycerol, non-esterified fatty acids (NEFA), and creatine kinase (CK) concentrations. Core temperature (Tcore) and perceived exertion (RPE) were also measured. RESULTS: Compared to baseline, 20 m sprint speed was reduced after ET (–8 ± 8{\%}) and 45 min (–6 ± 8{\%}, p<0.05). CMJ height was reduced after ET compared to baseline (–11 ± 10{\%} p<0.05). Sprint speeds over 15 m were reduced during ET compared to all time-points (–3 ± 4{\%} vs. 76-90 min, p<0.05). Glucose concentrations were lower during ET (3.9 ± 0.7 mmol·L-1) compared to all time-points, except the first 15 min of the second half (p<0.05). Lactate concentrations were lower in ET than the first half (–2.5 ± 2.2 mmol·L-1). Glycerol and NEFA concentrations were higher (p<0.05) in ET compared to 90 min (+59 ± 42{\%} and +37 ± 24{\%}, respectively). ET increased RPE relative to the first 90 min (16 ± 3 vs. 13 ± 2, p<0.05) and Tcore was elevated during the last 15 min of ET (38.7 ± 0.8°C) compared to the first 15 min of ET (38.1 ± 0.7°C, p<0.05) and the first 15 min of the second half (38.0 ± 0.1°C, p<0.05). CONCLUSIONS: The ET period negatively impacts performance and physiological responses compared to 90 min of simulated match-play. Reductions in blood glucose and lactate with increases in plasma NEFA and glycerol may indicate endogenous CHO depletion and increased fat oxidation during ET. Future research is required to investigate interventions that attenuate decrements in performance and physiological perturbations",
author = "Liam Harper and Paul Parker and Robert Hunter and Stuart Goodall and Kevin Thomas and Glyn Howatson and West, {Daniel J.} and Stevenson, {Emma J.} and Mark Russell",
year = "2016",
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language = "English",
volume = "48",
pages = "667",
journal = "Medicine and Science in Sports and Exercise",
issn = "0195-9131",
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Harper, L, Parker, P, Hunter, R, Goodall, S, Thomas, K, Howatson, G, West, DJ, Stevenson, EJ & Russell, M 2016, 'Impact Of “Extra-time” On Performance And Physiological Responses To Simulated Soccer Match-play', Medicine and Science in Sports and Exercise, vol. 48, no. 5S, pp. 667. https://doi.org/10.1249/01.mss.0000487003.73788.9b

Impact Of “Extra-time” On Performance And Physiological Responses To Simulated Soccer Match-play. / Harper, Liam; Parker, Paul ; Hunter, Robert; Goodall, Stuart; Thomas, Kevin; Howatson, Glyn; West, Daniel J.; Stevenson, Emma J.; Russell, Mark.

In: Medicine and Science in Sports and Exercise, Vol. 48, No. 5S, 05.2016, p. 667.

Research output: Contribution to journalMeeting Abstract

TY - JOUR

T1 - Impact Of “Extra-time” On Performance And Physiological Responses To Simulated Soccer Match-play

AU - Harper, Liam

AU - Parker, Paul

AU - Hunter, Robert

AU - Goodall, Stuart

AU - Thomas, Kevin

AU - Howatson, Glyn

AU - West, Daniel J.

AU - Stevenson, Emma J.

AU - Russell, Mark

PY - 2016/5

Y1 - 2016/5

N2 - The physiological and performance responses to 90 min of soccer-specific exercise are well known. However, the responses to 120 min of soccer-specific exercise (i.e., inclusion of an extra-time period; ET) are unclear. This is despite the importance of ET in determining match outcomes in tournament match-play. PURPOSE: To profile the performance and physiological responses to 120 min of simulated soccer match-play. METHODS: Following protocol habituation, 12 amateur soccer players (22 ± 3 y; estimated V[Combining Dot Above]O2max: 55.8 ± 1.6 mL·kg·min-1) completed 120 min of soccer-specific exercise, covering 14.4 km. Performance indices (15 m and 20 m sprint speeds, countermovement jump height (CMJ), dribble speed and precision) were measured during the protocol. Blood was collected during exercise to assess blood glucose and lactate, plasma glycerol, non-esterified fatty acids (NEFA), and creatine kinase (CK) concentrations. Core temperature (Tcore) and perceived exertion (RPE) were also measured. RESULTS: Compared to baseline, 20 m sprint speed was reduced after ET (–8 ± 8%) and 45 min (–6 ± 8%, p<0.05). CMJ height was reduced after ET compared to baseline (–11 ± 10% p<0.05). Sprint speeds over 15 m were reduced during ET compared to all time-points (–3 ± 4% vs. 76-90 min, p<0.05). Glucose concentrations were lower during ET (3.9 ± 0.7 mmol·L-1) compared to all time-points, except the first 15 min of the second half (p<0.05). Lactate concentrations were lower in ET than the first half (–2.5 ± 2.2 mmol·L-1). Glycerol and NEFA concentrations were higher (p<0.05) in ET compared to 90 min (+59 ± 42% and +37 ± 24%, respectively). ET increased RPE relative to the first 90 min (16 ± 3 vs. 13 ± 2, p<0.05) and Tcore was elevated during the last 15 min of ET (38.7 ± 0.8°C) compared to the first 15 min of ET (38.1 ± 0.7°C, p<0.05) and the first 15 min of the second half (38.0 ± 0.1°C, p<0.05). CONCLUSIONS: The ET period negatively impacts performance and physiological responses compared to 90 min of simulated match-play. Reductions in blood glucose and lactate with increases in plasma NEFA and glycerol may indicate endogenous CHO depletion and increased fat oxidation during ET. Future research is required to investigate interventions that attenuate decrements in performance and physiological perturbations

AB - The physiological and performance responses to 90 min of soccer-specific exercise are well known. However, the responses to 120 min of soccer-specific exercise (i.e., inclusion of an extra-time period; ET) are unclear. This is despite the importance of ET in determining match outcomes in tournament match-play. PURPOSE: To profile the performance and physiological responses to 120 min of simulated soccer match-play. METHODS: Following protocol habituation, 12 amateur soccer players (22 ± 3 y; estimated V[Combining Dot Above]O2max: 55.8 ± 1.6 mL·kg·min-1) completed 120 min of soccer-specific exercise, covering 14.4 km. Performance indices (15 m and 20 m sprint speeds, countermovement jump height (CMJ), dribble speed and precision) were measured during the protocol. Blood was collected during exercise to assess blood glucose and lactate, plasma glycerol, non-esterified fatty acids (NEFA), and creatine kinase (CK) concentrations. Core temperature (Tcore) and perceived exertion (RPE) were also measured. RESULTS: Compared to baseline, 20 m sprint speed was reduced after ET (–8 ± 8%) and 45 min (–6 ± 8%, p<0.05). CMJ height was reduced after ET compared to baseline (–11 ± 10% p<0.05). Sprint speeds over 15 m were reduced during ET compared to all time-points (–3 ± 4% vs. 76-90 min, p<0.05). Glucose concentrations were lower during ET (3.9 ± 0.7 mmol·L-1) compared to all time-points, except the first 15 min of the second half (p<0.05). Lactate concentrations were lower in ET than the first half (–2.5 ± 2.2 mmol·L-1). Glycerol and NEFA concentrations were higher (p<0.05) in ET compared to 90 min (+59 ± 42% and +37 ± 24%, respectively). ET increased RPE relative to the first 90 min (16 ± 3 vs. 13 ± 2, p<0.05) and Tcore was elevated during the last 15 min of ET (38.7 ± 0.8°C) compared to the first 15 min of ET (38.1 ± 0.7°C, p<0.05) and the first 15 min of the second half (38.0 ± 0.1°C, p<0.05). CONCLUSIONS: The ET period negatively impacts performance and physiological responses compared to 90 min of simulated match-play. Reductions in blood glucose and lactate with increases in plasma NEFA and glycerol may indicate endogenous CHO depletion and increased fat oxidation during ET. Future research is required to investigate interventions that attenuate decrements in performance and physiological perturbations

U2 - 10.1249/01.mss.0000487003.73788.9b

DO - 10.1249/01.mss.0000487003.73788.9b

M3 - Meeting Abstract

VL - 48

SP - 667

JO - Medicine and Science in Sports and Exercise

T2 - Medicine and Science in Sports and Exercise

JF - Medicine and Science in Sports and Exercise

SN - 0195-9131

IS - 5S

ER -