21
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      In-season eccentric-overload training in elite soccer players: Effects on body composition, strength and sprint performance

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          The aim of this study was to describe the changes in body composition, strength and sprint performance in response to an entire competitive season of football training supplemented with 2 inertial eccentric-overload training sessions a week in young male professional soccer players. Whole body and regional composition (assessed using dual-energy X-ray absorptiometry), power output in half-squat and 40-m sprinting performance were evaluated in fourteen players. The eccentric-overload training consisted of training sessions a week of 1–2 sets of 10 exercises of upper-body and core (Day 1) and lower-body (Day 2), during the entire competitive season (27 weeks). Whole body fat mass decreased (-6.3 ± 3.6%, ES = -0.99 ± 0.54) substantially while lean mass increased (2.5 ± 0.8%, ES = 0.25 ± 0.09), with some regional differences. There was a substantial increase in half-squat power output (from 3% to 14%, ES from 0.45 to 1.73) and sprint performance (from 1.1% to 1.8%, ES from -0.33 to -0.44), however performance changes were not correlated with changes in body composition. A combined soccer and eccentric-overload training program was able to promote positive changes in body composition and physical factors relevant to both on-field performance and injury prevention in elite soccer players.

          Related collections

          Most cited references56

          • Record: found
          • Abstract: found
          • Article: not found

          Anthropometric and physiological predispositions for elite soccer.

          This review is focused on anthropometric and physiological characteristics of soccer players with a view to establishing their roles within talent detection, identification and development programmes. Top-class soccer players have to adapt to the physical demands of the game, which are multifactorial. Players may not need to have an extraordinary capacity within any of the areas of physical performance but must possess a reasonably high level within all areas. This explains why there are marked individual differences in anthropometric and physiological characteristics among top players. Various measurements have been used to evaluate specific aspects of the physical performance of both youth and adult soccer players. The positional role of a player is related to his or her physiological capacity. Thus, midfield players and full-backs have the highest maximal oxygen intakes ( > 60 ml x kg(-1) x min(-1)) and perform best in intermittent exercise tests. On the other hand, midfield players tend to have the lowest muscle strength. Although these distinctions are evident in adult and elite youth players, their existence must be interpreted circumspectly in talent identification and development programmes. A range of relevant anthropometric and physiological factors can be considered which are subject to strong genetic influences (e.g. stature and maximal oxygen intake) or are largely environmentally determined and susceptible to training effects. Consequently, fitness profiling can generate a useful database against which talented groups may be compared. No single method allows for a representative assessment of a player's physical capabilities for soccer. We conclude that anthropometric and physiological criteria do have a role as part of a holistic monitoring of talented young players.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Deficits in neuromuscular control of the trunk predict knee injury risk: a prospective biomechanical-epidemiologic study.

            Female athletes are at significantly greater risk of anterior cruciate ligament (ACL) injury than male athletes in the same high-risk sports. Decreased trunk (core) neuromuscular control may compromise dynamic knee stability. (1) Increased trunk displacement after sudden force release would be associated with increased knee injury risk; (2) coronal (lateral), not sagittal, plane displacement would be the strongest predictor of knee ligament injury; (3) logistic regression of factors related to core stability would accurately predict knee, ligament, and ACL injury risk; and (4) the predictive value of these models would differ between genders. Cohort study (prognosis); Level of evidence, 2. In this study, 277 collegiate athletes (140 female and 137 male) were prospectively tested for trunk displacement after a sudden force release. Analysis of variance and multivariate logistic regression identified predictors of risk in athletes who sustained knee injury. Twenty-five athletes (11 female and 14 male) sustained knee injuries over a 3-year period. Trunk displacement was greater in athletes with knee, ligament, and ACL injuries than in uninjured athletes (P < .05). Lateral displacement was the strongest predictor of ligament injury (P = .009). A logistic regression model, consisting of trunk displacements, proprioception, and history of low back pain, predicted knee ligament injury with 91% sensitivity and 68% specificity (P = .001). This model predicted knee, ligament, and ACL injury risk in female athletes with 84%, 89%, and 91% accuracy, but only history of low back pain was a significant predictor of knee ligament injury risk in male athletes. Factors related to core stability predicted risk of athletic knee, ligament, and ACL injuries with high sensitivity and moderate specificity in female, but not male, athletes.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Evolution of match performance parameters for various playing positions in the English Premier League.

              This study aimed to investigate position-specific evolution of physical and technical performance parameters in the English Premier League (EPL). Match performance observations (n=14700) were collected using a multiple-camera computerized tracking system across seven seasons (2006-07 to 2012-13). Data were analyzed relative to five playing positions: central defenders (n=3792), full backs (n=3420), central midfielders (n=3200), wide midfielders (n=2136) and attackers (n=2152). High-intensity running distance increased in the final season versus the first season in all playing positions (p<.05, ES: 0.9-1.3) with full backs displaying the greatest increase (∼36% higher in 2012-13). Similar trends were observed for sprint distance with full backs demonstrating the most pronounced increase across the seven seasons (36-63%, p<.001, ES: 0.8-1.3). Central players (central defenders and midfielders) illustrated the most pronounced increases in total passes and pass success rate (p<.05, ES: 0.7-0.9) whilst wide players (full backs and wide midfielders) demonstrated only small-moderate increases in total passes and pass success rate (p<.05, ES: 0.6-0.8). The data demonstrates that evolving tactics in the EPL have impacted on the physical demands of wide players and the technical requirements of central players. These findings could be used for talent identification or position-specific physical and technical training.
                Bookmark

                Author and article information

                Contributors
                Role: Data curationRole: InvestigationRole: MethodologyRole: SupervisionRole: Writing – original draft
                Role: SupervisionRole: Writing – review & editing
                Role: Writing – review & editing
                Role: Funding acquisitionRole: MethodologyRole: Project administrationRole: SupervisionRole: Writing – review & editing
                Role: Data curationRole: InvestigationRole: MethodologyRole: Software
                Role: Data curationRole: InvestigationRole: MethodologyRole: Software
                Role: Data curationRole: InvestigationRole: MethodologyRole: Software
                Role: Data curationRole: Formal analysisRole: InvestigationRole: Methodology
                Role: Funding acquisitionRole: InvestigationRole: Project administrationRole: SupervisionRole: Writing – review & editing
                Role: Editor
                Journal
                PLoS One
                PLoS ONE
                plos
                plosone
                PLoS ONE
                Public Library of Science (San Francisco, CA USA )
                1932-6203
                16 October 2018
                2018
                : 13
                : 10
                : e0205332
                Affiliations
                [1 ] Department of Sport and Informatics, Section of Physical Education and Sport, Pablo de Olavide University, Sevilla, Spain
                [2 ] Football Performance & Science Department, ASPIRE Academy, Doha, Qatar
                [3 ] Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
                [4 ] Sports and Exercise Medicine Unit, Department of Experimental and Clinic Medicine, University of Florence, Florence, Italy
                [5 ] Sport Sciences Department, ACF Fiorentina S.p.A., Florence, Italy
                Universidad Europea de Madrid, SPAIN
                Author notes

                Competing Interests: A commercial company employed AB, RM and NT: ACF Fiorentina. This does not alter our adherence to PLOS ONE policies on sharing data and materials.

                Author information
                http://orcid.org/0000-0002-5432-4786
                http://orcid.org/0000-0002-4166-3877
                Article
                PONE-D-18-16222
                10.1371/journal.pone.0205332
                6191107
                30325935
                ad6b6e35-6eb2-45c4-a59c-5291a44c488a
                © 2018 Suarez-Arrones et al

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 30 May 2018
                : 24 September 2018
                Page count
                Figures: 2, Tables: 5, Pages: 16
                Funding
                Funded by: Qatar National Research Fund (Qatar Foundation)
                Award ID: NPRP 6-1526-3-363
                Award Recipient :
                This study was made possible by NPRP grant # NPRP 6-1526-3-363 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors. The funder provided support in the form of salaries for author LSA but did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. The specific roles of these authors are articulated in the “author contributions” section.
                Categories
                Research Article
                Biology and Life Sciences
                Psychology
                Behavior
                Recreation
                Sports
                Social Sciences
                Psychology
                Behavior
                Recreation
                Sports
                Biology and Life Sciences
                Sports Science
                Sports
                Biology and Life Sciences
                Biochemistry
                Lipids
                Fats
                Physical Sciences
                Physics
                Classical Mechanics
                Motion
                Inertia
                Biology and Life Sciences
                Psychology
                Behavior
                Human Performance
                Social Sciences
                Psychology
                Behavior
                Human Performance
                Biology and Life Sciences
                Physiology
                Biological Locomotion
                Running
                Medicine and Health Sciences
                Physiology
                Biological Locomotion
                Running
                Medicine and Health Sciences
                Public and Occupational Health
                Physical Activity
                Physical Fitness
                Exercise
                Strength Training
                Medicine and Health Sciences
                Sports and Exercise Medicine
                Exercise
                Strength Training
                Biology and Life Sciences
                Sports Science
                Sports and Exercise Medicine
                Exercise
                Strength Training
                Biology and Life Sciences
                Psychology
                Behavior
                Recreation
                Games
                Social Sciences
                Psychology
                Behavior
                Recreation
                Games
                Biology and Life Sciences
                Biochemistry
                Metabolism
                Bone and Mineral Metabolism
                Custom metadata
                There are ethical restrictions on sharing a de-identified data set (e.g., data contain potentially sensitive information about international elite professional soccer players). Additionally data are owned by ACF Fiorentina organization. Contact information to which data requests may be sent: ljsuamor@ 123456upo.es (corresponding author) or nachotorreno@ 123456hotmail.com (ACF Fiorentina). We confirm that others would be able to access these data in the same manner as the authors, and the authors did not have any special access privileges that others would not have.

                Uncategorized
                Uncategorized

                Comments

                Comment on this article