Biomechanical and physiological responses to 120 minutes of soccer-specific exercise

Adam Field, Liam Corr, Matthew Haines, Steve Lui, Robert Naughton, Richard Page, Liam Harper

Research output: Contribution to journalArticle

Abstract

Purpose: To investigate biomechanical and physiological responses to soccer-specific exercise incorporating an extra time period (ET) and assess the test-retest reliability of these responses. Methods: Twelve soccer players performed 120 min of soccer-specific exercise. Tri–axial (PLTotal) and uni-axial PlayerLoad™ in the vertical (PLV), anterior-posterior (PLA-P) and medial-lateral (PLM-L) planes were monitored using a portable accelerometer. Likewise, respiratory exchange ratio (RER) was recorded throughout exercise. At the end of each 15 min period, players provided differential ratings of perceived exertion ([d-RPE]) for legs [RPE-L], breathlessness [RPE-B] and overall [RPE-O]) and capillary samples were taken to measure blood lactate (BLa) concentrations. The soccer-specific exercise was completed twice within seven days to assess reliability. Results: A main effect for time was identified for PLTotal (p = 0.045), PLV (p = 0.002), PLA-P (p = 0.011), RER (p = 0.001), RPE-L (p = 0.001), RPE-O (p = 0.003) and CMJ (p = 0.020). A significant increase in PLTotal (234 ± 34 a.u) and decrease in RER (0.87 ± 0.03) was evident during 105-120 min versus 0-15 min (215 ± 25 a.u; p = 0.002 and 0.92 ± 0.02; p = 0.001). Coefficient of variations were <10% and Pearson’s correlation coefficient demonstrated moderate to very strong (0.33-0.99) reliability for all PL variables, RPE-B, BLa and RER. Conclusions: These results suggest that mechanical efficiency is compromised and an increased rate of lipolysis is observed as a function of exercise duration, particularly during ET. This data has implications for practitioners interested in fatigue-induced changes during ET.
Original languageEnglish
JournalResearch Quarterly for Exercise and Sport
Publication statusAccepted/In press - 24 Nov 2019

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Soccer
Dyspnea
Lactic Acid
Leg
Lipolysis
Reproducibility of Results
Fatigue

Cite this

@article{169633b8b229446baebfb1b2f7e5aa1b,
title = "Biomechanical and physiological responses to 120 minutes of soccer-specific exercise",
abstract = "Purpose: To investigate biomechanical and physiological responses to soccer-specific exercise incorporating an extra time period (ET) and assess the test-retest reliability of these responses. Methods: Twelve soccer players performed 120 min of soccer-specific exercise. Tri–axial (PLTotal) and uni-axial PlayerLoad™ in the vertical (PLV), anterior-posterior (PLA-P) and medial-lateral (PLM-L) planes were monitored using a portable accelerometer. Likewise, respiratory exchange ratio (RER) was recorded throughout exercise. At the end of each 15 min period, players provided differential ratings of perceived exertion ([d-RPE]) for legs [RPE-L], breathlessness [RPE-B] and overall [RPE-O]) and capillary samples were taken to measure blood lactate (BLa) concentrations. The soccer-specific exercise was completed twice within seven days to assess reliability. Results: A main effect for time was identified for PLTotal (p = 0.045), PLV (p = 0.002), PLA-P (p = 0.011), RER (p = 0.001), RPE-L (p = 0.001), RPE-O (p = 0.003) and CMJ (p = 0.020). A significant increase in PLTotal (234 ± 34 a.u) and decrease in RER (0.87 ± 0.03) was evident during 105-120 min versus 0-15 min (215 ± 25 a.u; p = 0.002 and 0.92 ± 0.02; p = 0.001). Coefficient of variations were <10{\%} and Pearson’s correlation coefficient demonstrated moderate to very strong (0.33-0.99) reliability for all PL variables, RPE-B, BLa and RER. Conclusions: These results suggest that mechanical efficiency is compromised and an increased rate of lipolysis is observed as a function of exercise duration, particularly during ET. This data has implications for practitioners interested in fatigue-induced changes during ET.",
keywords = "Football, PlayerLoad™, Oxygen consumption, Perceived exertion, Fatigue, Reliability",
author = "Adam Field and Liam Corr and Matthew Haines and Steve Lui and Robert Naughton and Richard Page and Liam Harper",
year = "2019",
month = "11",
day = "24",
language = "English",
journal = "Research Quarterly for Exercise and Sport",
issn = "0270-1367",
publisher = "AAHPERD",

}

TY - JOUR

T1 - Biomechanical and physiological responses to 120 minutes of soccer-specific exercise

AU - Field, Adam

AU - Corr, Liam

AU - Haines, Matthew

AU - Lui, Steve

AU - Naughton, Robert

AU - Page, Richard

AU - Harper, Liam

PY - 2019/11/24

Y1 - 2019/11/24

N2 - Purpose: To investigate biomechanical and physiological responses to soccer-specific exercise incorporating an extra time period (ET) and assess the test-retest reliability of these responses. Methods: Twelve soccer players performed 120 min of soccer-specific exercise. Tri–axial (PLTotal) and uni-axial PlayerLoad™ in the vertical (PLV), anterior-posterior (PLA-P) and medial-lateral (PLM-L) planes were monitored using a portable accelerometer. Likewise, respiratory exchange ratio (RER) was recorded throughout exercise. At the end of each 15 min period, players provided differential ratings of perceived exertion ([d-RPE]) for legs [RPE-L], breathlessness [RPE-B] and overall [RPE-O]) and capillary samples were taken to measure blood lactate (BLa) concentrations. The soccer-specific exercise was completed twice within seven days to assess reliability. Results: A main effect for time was identified for PLTotal (p = 0.045), PLV (p = 0.002), PLA-P (p = 0.011), RER (p = 0.001), RPE-L (p = 0.001), RPE-O (p = 0.003) and CMJ (p = 0.020). A significant increase in PLTotal (234 ± 34 a.u) and decrease in RER (0.87 ± 0.03) was evident during 105-120 min versus 0-15 min (215 ± 25 a.u; p = 0.002 and 0.92 ± 0.02; p = 0.001). Coefficient of variations were <10% and Pearson’s correlation coefficient demonstrated moderate to very strong (0.33-0.99) reliability for all PL variables, RPE-B, BLa and RER. Conclusions: These results suggest that mechanical efficiency is compromised and an increased rate of lipolysis is observed as a function of exercise duration, particularly during ET. This data has implications for practitioners interested in fatigue-induced changes during ET.

AB - Purpose: To investigate biomechanical and physiological responses to soccer-specific exercise incorporating an extra time period (ET) and assess the test-retest reliability of these responses. Methods: Twelve soccer players performed 120 min of soccer-specific exercise. Tri–axial (PLTotal) and uni-axial PlayerLoad™ in the vertical (PLV), anterior-posterior (PLA-P) and medial-lateral (PLM-L) planes were monitored using a portable accelerometer. Likewise, respiratory exchange ratio (RER) was recorded throughout exercise. At the end of each 15 min period, players provided differential ratings of perceived exertion ([d-RPE]) for legs [RPE-L], breathlessness [RPE-B] and overall [RPE-O]) and capillary samples were taken to measure blood lactate (BLa) concentrations. The soccer-specific exercise was completed twice within seven days to assess reliability. Results: A main effect for time was identified for PLTotal (p = 0.045), PLV (p = 0.002), PLA-P (p = 0.011), RER (p = 0.001), RPE-L (p = 0.001), RPE-O (p = 0.003) and CMJ (p = 0.020). A significant increase in PLTotal (234 ± 34 a.u) and decrease in RER (0.87 ± 0.03) was evident during 105-120 min versus 0-15 min (215 ± 25 a.u; p = 0.002 and 0.92 ± 0.02; p = 0.001). Coefficient of variations were <10% and Pearson’s correlation coefficient demonstrated moderate to very strong (0.33-0.99) reliability for all PL variables, RPE-B, BLa and RER. Conclusions: These results suggest that mechanical efficiency is compromised and an increased rate of lipolysis is observed as a function of exercise duration, particularly during ET. This data has implications for practitioners interested in fatigue-induced changes during ET.

KW - Football

KW - PlayerLoad™

KW - Oxygen consumption

KW - Perceived exertion

KW - Fatigue

KW - Reliability

M3 - Article

JO - Research Quarterly for Exercise and Sport

JF - Research Quarterly for Exercise and Sport

SN - 0270-1367

ER -