Biomechanical and Physiological Responses to 120 Min. of Soccer-Specific Exercise
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| Title: | Biomechanical and Physiological Responses to 120 Min. of Soccer-Specific Exercise |
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| Language: | English |
| Authors: | Field, Adam (ORCID |
| Source: | Research Quarterly for Exercise and Sport. 2020 91(4):692-704. |
| Availability: | Routledge. Available from: Taylor & Francis, Ltd. 530 Walnut Street Suite 850, Philadelphia, PA 19106. Tel: 800-354-1420; Tel: 215-625-8900; Fax: 215-207-0050; Web site: http://www.tandf.co.uk/journals |
| Peer Reviewed: | Y |
| Page Count: | 13 |
| Publication Date: | 2020 |
| Document Type: | Journal Articles Reports - Research |
| Education Level: | Higher Education Postsecondary Education |
| Descriptors: | Biomechanics, Exercise Physiology, Metabolism, Athletes, Team Sports, Measurement Equipment, Test Reliability, Biochemistry, Correlation, Exercise, Fatigue (Biology), College Athletics, Dietetics |
| DOI: | 10.1080/02701367.2019.1698698 |
| ISSN: | 0270-1367 |
| Abstract: | Purpose: The purpose of the study is 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 (PL[subscript Total]) and uni-axial PlayerLoad™ in the vertical (PL[subscript V]), anterior-posterior (PL[subscript A-P]), and medial-lateral (PL[subscript M-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 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 7 days to assess reliability. Results: A main effect for time was identified for PL[subscript Total] (p = 0.045), PL[subscript V] (p = 0.002), PL[subscript A-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 PL[subscript Total] (234 ± 34 au) and decrease in RER (0.87 ± 0.03) was evident during 105-120 versus 0-15 min (215 ± 25 au; p = 0.002 and 0.92 ± 0.02; p = 0.001). Coefficients 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. These data have implications for practitioners interested in fatigue-induced changes during ET. |
| Abstractor: | As Provided |
| Entry Date: | 2020 |
| Accession Number: | EJ1275443 |
| Database: | ERIC |
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| Abstract: | Purpose: The purpose of the study is 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 (PL[subscript Total]) and uni-axial PlayerLoad™ in the vertical (PL[subscript V]), anterior-posterior (PL[subscript A-P]), and medial-lateral (PL[subscript M-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 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 7 days to assess reliability. Results: A main effect for time was identified for PL[subscript Total] (p = 0.045), PL[subscript V] (p = 0.002), PL[subscript A-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 PL[subscript Total] (234 ± 34 au) and decrease in RER (0.87 ± 0.03) was evident during 105-120 versus 0-15 min (215 ± 25 au; p = 0.002 and 0.92 ± 0.02; p = 0.001). Coefficients 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. These data have implications for practitioners interested in fatigue-induced changes during ET. |
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| ISSN: | 0270-1367 |
| DOI: | 10.1080/02701367.2019.1698698 |
