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Parker S, Duthie G, Robertson S. A framework for player movement analysis in team sports. Front Sports Act Living 2024; 6:1375513. [PMID: 39165645 PMCID: PMC11334162 DOI: 10.3389/fspor.2024.1375513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 06/25/2024] [Indexed: 08/22/2024] Open
Abstract
Player movement is a fundamental component of evaluating performance in most team sports. Movement can be evaluated across multiple scales, referring to the function of anatomical structures through various planes of motion or an individual regulating their field position based on the movement of opposition players. Developments in commercially available tracking systems have afforded end users the ability to investigate the spatiotemporal features of movement in fine detail. These advancements, in conjunction with overlaid contextual information, have provided insights into the strategies adopted by players in relation to their movement. Understanding movement beyond its semantic value allows practitioners to make informed decisions surrounding performance evaluation and training design. This investigation proposes a framework to guide the analysis of player movement within team sports environments. The framework describes how operational standards for assessing movement can be designed in reference to theory and a set training philosophy. Such practice allows for the spatial and temporal complexities within team sports to be described and could potentially lead to better-applied outcomes through greater interdisciplinary collaboration and an improved holistic understanding of movement. To inform its development, this study evaluates the current research and identifies several open questions to guide future investigations.
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Affiliation(s)
- Stan Parker
- Institute for Health and Sport (IHeS), Victoria University, Melbourne, VIC, Australia
- High Performance Department, Western Bulldogs Football Club, Melbourne, VIC, Australia
| | - Grant Duthie
- Institute for Health and Sport (IHeS), Victoria University, Melbourne, VIC, Australia
- School of Exercise Science, Australian Catholic University, Strathfield, NSW, Australia
- Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre, Australian Catholic University, Melbourne, VIC, Australia
| | - Sam Robertson
- Institute for Health and Sport (IHeS), Victoria University, Melbourne, VIC, Australia
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Egan B, Young D, Collins K, Malone S, Coratella G. The Between-Competition Running Demands of Elite Hurling Match-Play. Sports (Basel) 2021; 9:sports9110145. [PMID: 34822345 PMCID: PMC8621312 DOI: 10.3390/sports9110145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/12/2021] [Accepted: 10/19/2021] [Indexed: 12/02/2022] Open
Abstract
The current study aimed to investigate the differences in running demands between the National Hurling League (NHL) and the Championship, and within playing positions. GPS (10 Hz, STATSports Apex GNSS) were used to analyse the running demands during 34 games (2017–2020 seasons) of the Championship and the NHL. The running demands (total-, relative-, high-speed- [>17 km·h−1] and sprint [≥22 km·h−1] distance, number and length of sprints, and peak speed) were compared between competitions. Greater total- [ES = 0.32], relative- [ES = 0.26], and sprint-distance [ES = 0.41], and number of sprints [ES = 1.29] were completed in the Championship. The high-speed distance was similar between competitions. Half-backs and half-forwards covered greater total- (ES = 0.91 and 0.21, respectively), relative- (ES = 1.14 and 0.68, respectively), high-speed- (ES = 0.69 and 0.44, respectively), and sprint-distance (ES = 0.50 and 1.26, respectively), number of sprints (ES = 2.66 and 1.73, respectively), and peak speed (ES = 1.09 and 1.32, respectively) in the Championship. There was no difference (p < 0.05) in the sprint distance covered between positions in the Championship. The results showed that the Championship is more physically demanding. The findings present key implications for the transition between competitions.
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Affiliation(s)
- Brendan Egan
- Department of Sport and Early Childhood Studies, Technological University of the Shannon: Midlands Midwest, Thurles Campus, Thurles, E41 PC92 Tipperary, Ireland;
| | - Damien Young
- Department of Sport and Early Childhood Studies, Technological University of the Shannon: Midlands Midwest, Thurles Campus, Thurles, E41 PC92 Tipperary, Ireland;
- Correspondence: ; Tel.: +353-87-925-3360
| | - Kieran Collins
- Department of Science, Gaelic Sport Research Centre, Technological University Dublin, Tallaght, D24 FKT9 Dublin, Ireland; (K.C.); (S.M.)
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool L3 3AF, UK
| | - Shane Malone
- Department of Science, Gaelic Sport Research Centre, Technological University Dublin, Tallaght, D24 FKT9 Dublin, Ireland; (K.C.); (S.M.)
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool L3 3AF, UK
| | - Giuseppe Coratella
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy;
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Silva R, Clemente FM, González-Fernández FT, Bernardo A, Ardigò LP. Weekly Variations of Short-Duration Maximal Jumping Performance in Soccer Players: Exploring Relationships With Accumulated Training Load and Match Demands. Front Physiol 2021; 12:690353. [PMID: 34489720 PMCID: PMC8417052 DOI: 10.3389/fphys.2021.690353] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 07/20/2021] [Indexed: 11/13/2022] Open
Abstract
Purpose: The aim of this study was 2-fold: (1) to analyze variations of short-duration maximal jumping performance in players exposed to a match and those who were not and (2) to analyze the relationships between changes in the short-duration maximal jumping performance and different accumulated training load and match demands measures. Methods: Twenty-four professional soccer players (age: 20.3 ± 1.7 years) were monitored daily for their training load and match demands over 6 weeks. In addition, they performed a weekly short-duration maximal jumping performance test (72 h after the last match). Results: Negative moderate correlations were found between percentage of change of countermovement jump (CMJ) height and Acummulated training load (ATL) of total distance (TD), high metabolic load (HML), accelerations (ACC), and decelerations (DEC) (r = −0.38, p = 0.004; r = −0.33, p = 0.013; r = −0.39, p = 0.003; and r = −0.30, p = 0.026). No correlations were found for match load (ML). TD, HML, ACC, and DCC (r = 0.27, r = 0.25, r = 0.31, and r = 0.22, respectively) were used to predict the percentage of change of CMJ height. Conclusion: Match participation has negative effects on CMJ performance. The ATL of HML, ACC, DCC, and TD have a significant influence on both CMJ measures changes. Also, the ATL values of those metrics are the best predictors of the percentage changes of CMJ performance.
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Affiliation(s)
- Rui Silva
- Escola Superior Desporto e Lazer, Instituto Politécnico de Viana Do Castelo, Viana Do Castelo, Portugal
| | - Filipe Manuel Clemente
- Escola Superior Desporto e Lazer, Instituto Politécnico de Viana Do Castelo, Viana Do Castelo, Portugal.,Instituto de Telecomunicações, Delegação da Covilhã, Lisboa, Portugal
| | - Francisco Tomás González-Fernández
- Department of Physical Activity and Sport Sciences, Pontifical University of Comillas, Centro de Estudios Superiores Alberta Giménez, Palma, Spain.,SER (Salud, Educación y Rendimiento) Research Group, Pontifical University of Comillas, Centro de Estudios Superiores Alberta Giménez, Palma, Spain
| | - André Bernardo
- Escola Superior Desporto e Lazer, Instituto Politécnico de Viana Do Castelo, Viana Do Castelo, Portugal
| | - Luca Paolo Ardigò
- Department of Neurosciences, Biomedicine and Movement Sciences, School of Exercise and Sport Science, University of Verona, Verona, Italy
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Sanchez-Sanchez J, Martinez-Rodriguez A, Felipe JL, Hernandez-Martin A, Ubago-Guisado E, Bangsbo J, Gallardo L, Garcia-Unanue J. Effect of Natural Turf, Artificial Turf, and Sand Surfaces on Sprint Performance. A Systematic Review and Meta-Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E9478. [PMID: 33348874 PMCID: PMC7767268 DOI: 10.3390/ijerph17249478] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/13/2020] [Accepted: 12/16/2020] [Indexed: 01/13/2023]
Abstract
The aim of this study was to analyze the influence of natural turf, artificial turf, and sand on sprint performance in different sports and to determine how the sport surface affects sprint performance. A systematic search was conducted in Pubmed, Web of Sciences, and SPORTDiscus databases. Out of 5644 studies, 11 studies were included in the meta-analysis. The studies were very heterogeneous, as they examined different structural characteristics or quality parameters. The studies on natural turf and sand showed significant improvements on sprint speed during training. On the other hand, the analysis of fatigue did not reveal significant differences in the deterioration of sprint speed on both natural and artificial turf. Significance was set at p < 0.05. In conclusion, although lower performance in sprint was reported on sand, further studies are needed to explain the differences in sprint on natural and artificial turf.
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Affiliation(s)
| | | | - Jose Luis Felipe
- School of Sport Sciences, Universidad Europea de Madrid, 28670 Madrid, Spain;
| | - Antonio Hernandez-Martin
- IGOID Research Group, Physical Activity and Sport Sciences Department, University of Castilla-La Mancha, 45071 Toledo, Spain; (A.H.-M.); (E.U.-G.); (L.G.); (J.G.-U.)
| | - Esther Ubago-Guisado
- IGOID Research Group, Physical Activity and Sport Sciences Department, University of Castilla-La Mancha, 45071 Toledo, Spain; (A.H.-M.); (E.U.-G.); (L.G.); (J.G.-U.)
| | - Jens Bangsbo
- Department of Nutrition, Exercise and Sports, University of Copenhaguen, 2177 Copenhagen, Denmark;
| | - Leonor Gallardo
- IGOID Research Group, Physical Activity and Sport Sciences Department, University of Castilla-La Mancha, 45071 Toledo, Spain; (A.H.-M.); (E.U.-G.); (L.G.); (J.G.-U.)
| | - Jorge Garcia-Unanue
- IGOID Research Group, Physical Activity and Sport Sciences Department, University of Castilla-La Mancha, 45071 Toledo, Spain; (A.H.-M.); (E.U.-G.); (L.G.); (J.G.-U.)
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The Influence of Soccer Playing Surface on the Loading Response to Ankle (P)Rehabilitation Exercises. J Sport Rehabil 2020; 30:105-111. [PMID: 32235001 DOI: 10.1123/jsr.2019-0199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 01/06/2020] [Accepted: 01/26/2020] [Indexed: 11/18/2022]
Abstract
CONTEXT Contemporary synthetic playing surfaces have been associated with an increased risk of ankle injury in the various types of football. Triaxial accelerometers facilitate in vivo assessment of planar mechanical loading on the player. OBJECTIVE To quantify the influence of playing surface on the PlayerLoad elicited during footwork and plyometric drills focused on the mechanism of ankle injury. DESIGN Repeated-measures, field-based design. SETTING Regulation soccer pitches. PARTICIPANTS A total of 15 amateur soccer players (22.1 [2.4] y), injury free with ≥6 years competitive experience. INTERVENTIONS Each player completed a test battery comprising 3 footwork drills (anterior, lateral, and diagonal) and 4 plyometric drills (anterior hop, inversion hop, eversion hop, and diagonal hop) on natural turf (NT), third-generation artificial turf (3G), and AstroTurf. Global positioning system sensors were located at C7 and the mid-tibia of each leg to measure triaxial acceleration (100 Hz). MAIN OUTCOME MEASURES PlayerLoad in each axial plane was calculated for each drill on each surface and at each global positioning system location. RESULTS Analysis of variance revealed a significant main effect for sensor location in all drills, with PlayerLoad higher at mid-tibia than at C7 in all movement planes. AstroTurf elicited significantly higher PlayerLoad in the mediolateral and anteroposterior planes, with typically no difference between NT and 3G. In isolated inversion and eversion hopping trials, the 3G surface also elicited lower PlayerLoad than NT. CONCLUSIONS PlayerLoad magnitude was sensitive to unit placement, advocating measurement with greater anatomical relevance when using microelectromechanical systems technology to monitor training or rehabilitation load. AstroTurf elicited higher PlayerLoad across all planes and drills and should be avoided for rehabilitative purposes, whereas 3G elicited a similar mechanical response to NT.
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Izquierdo JM, De Benito AM, Araiz G, Guevara G, Redondo JC. Influence of competition on performance factors in under-19 soccer players at national league level. PLoS One 2020; 15:e0230068. [PMID: 32191716 PMCID: PMC7082026 DOI: 10.1371/journal.pone.0230068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 02/20/2020] [Indexed: 11/18/2022] Open
Abstract
The aim of this study was to analyse and quantify the acute effects of competition on several performance factors in under-19 male soccer players. To this end, 198 national league players (17.56 ± 0.78 years) performed various tests to measure jump capacity, kicking velocity and sprint times immediately pre-match (T1), at half-time (T2) and post-match (T3). Tests included kicking the ball to measure ball velocity (KICK), sprinting for 40 meters, timing the first 30 meters (30mACCEL), the last 10 meters (10mACCEL) and the total distance (40mACCEL), and performing countermovement jumps (CMJ). For subsequent analysis, the sample was divided into 5 playing positions: goalkeepers (n = 24), defenders (n = 51), midfielders (n = 36), wingers (n = 54) and forwards (n = 33). For all positions, we found a significant decline in performance (p<0.05) for kicking velocity (2.91% - 6.51%) and sprinting (0.44%-5.85%). For the CMJ, all positions except defenders presented a significant decline in performance that ranged from 1.5% to 4.56%. These findings highlight the need to individualise fitness training, taking into account the match needs and demands of the different playing positions in order to minimise the effects of match fatigue and accelerate post-match recovery.
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Affiliation(s)
- José María Izquierdo
- Department of Physical Activity and Sport Sciences, University of León, León, Spain
| | - Ana María De Benito
- Faculty of Physical Activity and Sport Sciences, Catholic University of Valencia San Vicente Mártir, Valencia, Spain
| | - Gorka Araiz
- Department of Physical Activity and Sport Sciences, University of León, León, Spain
| | - Guillermo Guevara
- Department of Physical Activity and Sport Sciences, University of León, León, Spain
| | - Juan Carlos Redondo
- Department of Physical Activity and Sport Sciences, University of León, León, Spain
- * E-mail:
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Page RM, Langley B, Finlay MJ, Greig M, Brogden C. The cumulative and residual fatigue response associated with soccer-specific activity performed on different playing surfaces. J Sports Sci 2020; 38:568-575. [PMID: 32019482 DOI: 10.1080/02640414.2020.1717303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This study aimed to assess the effect of playing surface (Natural [NT] and Artificial [AT] Turf) on the fatigue response to a soccer-specific exercise protocol (SSEP). Eighteen male soccer players completed the SSEP on NT and AT with pre-, post-, and 48 h post-assessments of eccentric knee flexor (eccKF) and concentric knee extensor peak torque (PT), peak countermovement (CMJ) and squat jump (SJ) height, and Nordic hamstring break angle. No significant main effects for surface or any surface and time interactions were observed for any of the outcome measures, except for eccKF PT recorded at 3.14 rad·s-1, which was significantly lower 48 h post-trial in the AT condition (AT = 146.3 ± 20.4 Nm; NT = 158.8 ± 24.7 Nm). Main effects for time were observed between pre- and post-trial measures for eccKF PT at all angular velocities, Nordic break angle, CMJ and SJ height. Nordic break angle, and both CMJ and SJ height were significantly impaired 48 h post-trial when compared to pre-trial. The findings of the current study suggest surface dependent changes in eccKF PT which may have implications for recovery and subsequent performance after competition on AT.
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Affiliation(s)
- Richard Michael Page
- Sports Injury Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, UK
| | - Ben Langley
- Sports Injury Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, UK
| | - Mitchell James Finlay
- Sports Injury Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, UK
| | - Matt Greig
- Sports Injury Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, UK
| | - Christopher Brogden
- Sports Injury Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, UK
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Ammar A, Bailey SJ, Hammouda O, Trabelsi K, Merzigui N, El Abed K, Driss T, Hökelmann A, Ayadi F, Chtourou H, Gharbi A, Turki M. Effects of Playing Surface on Physical, Physiological, and Perceptual Responses to a Repeated-Sprint Ability Test: Natural Grass Versus Artificial Turf. Int J Sports Physiol Perform 2019; 14:1219-1226. [PMID: 30860407 DOI: 10.1123/ijspp.2018-0766] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 02/04/2019] [Accepted: 02/10/2019] [Indexed: 11/18/2022]
Abstract
PURPOSE The effect of playing surface on physical performance during a repeated-sprint ability (RSA) test and the mechanisms for any potential playing-surface-dependent effects on RSA performance are equivocal. The purpose of this study was to investigate the effect of natural grass (NG) and artificial turf (AT) on physical performance, ratings of perceived exertion, feeling scale, and blood biomarkers related to anaerobic contribution (blood lactate [Lac]), muscle damage (creatine kinase and lactate dehydrogenase), inflammation (C-reactive protein), and immune function (neutrophils [NEU], lymphocytes [LYM], and monocytes) in response to an RSA test. METHODS A total of 9 male professional football players from the same regional team completed 2 sessions of RSA testing (6 × 30 s interspersed with a 35-s recovery) on NG and AT in a randomized order. During the RSA test, total (sum of distances) and peak (highest distance covered in a single repetition) distance covered were determined using a measuring tape, and the decrement in sprinting performance from the first to the last repetition was calculated. Before and after the RSA test, ratings of perceived exertion, feeling scale, and Lac, creatine kinase, lactate dehydrogenase, C-reactive protein, NEU, LYM, and monocytes were recorded in both NG and AT conditions. RESULTS Although physical performance declined during the RSA blocks on both surfaces (P = .001), the distance covered declined more on NG (15%) than on AT (11%; P = .04; effect size [ES] = -0.34; 95% confidence interval [CI], -1.21 to 0.56) with a higher total distance covered (+6% [2%]) on AT (P = .018; ES = 1.15; 95% CI, 0.16 to 2.04). In addition, lower ratings of perceived exertion (P = .04; ES = -0.49; 95% CI, -1.36 to 0.42), Lac, NEU, and LYM (P = .03; ES = -0.80; 95% CI, -1.67 to 0.14; ES = -0.16; 95% CI, -1.03 to 0.72; and ES = -0.94; 95% CI, -1.82 to 0.02, respectively) and more positive feelings (P = .02; ES = 0.81; 95% CI, -0.13 to 1.69) were observed after the RSA test performed on AT than on NG. No differences were observed in the remaining physical and blood markers. CONCLUSION These findings suggest that RSA performance is enhanced on AT compared with NG. This effect was accompanied by lower fatigue perception and Lac, NEU, and LYM and a more pleasurable feeling. These observations might have implications for physical performance in intermittent team-sport athletes who train and compete on different playing surfaces.
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Ammar A, Riemann BL, Trabelsi K, Blaumann M, Abdelkarim O, Chtourou H, Driss T, Hökelmann A. Comparison of 2- and 3-Minute Inter-Repetition Rest Periods on Maximal Jerk Technique and Power Maintenance. RESEARCH QUARTERLY FOR EXERCISE AND SPORT 2019; 90:287-296. [PMID: 30990367 DOI: 10.1080/02701367.2019.1594664] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Abstract
Purpose: The aim of this study was to examine the effect of 3- vs. 2-minute inter maximal-repetition rest period (IMRRP) on maintaining jerk technical efficiency and power production during two successive maximal repetitions of Clean & Jerk (C&J). Methods: In a randomized, within subject, repeated measures design, nine elite-weightlifters (age: 24.4 ± 3.6 years, body mass: 77.2 ± 7.1 kg, height 176.0 ± 6.4 cm and 1RM C&J: 170.0 ± 5.0 kg) performed 2-separate testing sessions using 2 (IMRRP-2) and 3 (IMRRP-3) -minute IMRRP, while barbell kinematics and kinetics and joint kinematics were recorded. Results: Statistical analysis showed that one minute longer IMRRP enhanced the maintenance of optimal jerk technique evidenced by reducing declines in peak vertical barbell displacement (2.74%; p = .03), peak barbell velocity (2.89%; p = .03), and peak knee (1.61%; p = .03) and hip extensions (1.59%; p = .03) during the drive phase of the jerk. Additionally, IMRRP-3 led to maintaining optimal lifting strategy by reducing the increase in horizontal displacement during the descending (3.85%; p = .04) and ascending (5.42%; p = .02) phases. Increasing IMRRP from 2min to 3min was also shown to enhance kinetic variables evidenced by prompting higher peak vGRF (2.01%; p = .04) and power (2.55%; p = .04). Conclusion: To better identify an athlete's maximal jerk technique and power maintenance, the results of this study suggest 3min as more appropriate IMRRP during successive C&J at 100% 1RM.
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Affiliation(s)
- Achraf Ammar
- a Otto-von-Guericke-University Magdeburg
- b Sfax University
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Calloway SP, Hardin DM, Crawford MD, Hardin JM, Lemak LJ, Giza E, Forsythe B, Lu Y, Patel BH, Osbahr DC, Gerhardt MB, Mandelbaum BR, Baldwin WW. Injury Surveillance in Major League Soccer: A 4-Year Comparison of Injury on Natural Grass Versus Artificial Turf Field. Am J Sports Med 2019; 47:2279-2286. [PMID: 31306590 DOI: 10.1177/0363546519860522] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Artificial playing surfaces are becoming more common due to decreased cost of maintenance and increased field usability across different environmental conditions. The Fédération Internationale de Football Association (FIFA) has approved newer generation artificial turf for soccer competition at the elite level, but many elite-level athletes prefer to play on natural grass surfaces due to a perceived increase in injury rate, discomfort, and fatigability on artificial turf. HYPOTHESIS Injury rates and rates of individually categorized types of injury experienced on artificial turf are noninferior to rates of injury on the standard comparator, natural grass, in elite-level Major League Soccer athletes. STUDY DESIGN Cohort study; Level of evidence, 2. METHODS Over the course of 4 Major League Soccer seasons (2013-2016), athlete injury data were recorded electronically. Injury data recorded in matches between 2 Major League Soccer teams were then analyzed. Playing surface was known for each venue, and all artificial turf surfaces were rated as 2-star according to FIFA criteria. Incidence rate ratios (Artificial Turf ÷ Natural Grass) were calculated with a 95% CI (α = .05) for both overall injury incidence and individual injury subgroups. A noninferiority margin (δ) of 0.15 was used to determine noninferiority of injury incidence rates. RESULTS A total of 2174 in-game injuries were recorded during the study period, with 1.54 injuries per game on artificial turf and 1.49 injuries per game on natural grass (incidence rate ratio, 1.033; 95% CI, 0.937-1.139). Within injury subgroups, overall ankle injury, Achilles injury, and ankle fracture were found to have a statistically higher incidence on artificial turf. Artificial turf was found to be noninferior to natural grass for overall foot injury and forefoot injury. No statistically significant differences were found in knee injuries between the 2 surfaces. CONCLUSION The overall rate of injury on artificial turf was noninferior to that on natural grass. Within individual injury categories, a higher rate of ankle injury was found on artificial turf. No other injury subgroup demonstrated statistically significant differences between surfaces. CLINICAL RELEVANCE FIFA 2-star rated artificial turf is a viable alternative to natural grass in elite-level soccer competition. Innovative research methods for comparing artificial turf versus natural grass may elucidate relative advantages with respect to player safety.
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Affiliation(s)
- Sean P Calloway
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - David M Hardin
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - Matthew D Crawford
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - J Michael Hardin
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - Lawrence J Lemak
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - Eric Giza
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - Brian Forsythe
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - Yining Lu
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - Bhavik H Patel
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - Daryl C Osbahr
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - Michael B Gerhardt
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - Bert R Mandelbaum
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
| | - William W Baldwin
- Investigation performed at Kerlan Jobe Institute, Santa Monica, California, USA
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Abstract
BACKGROUND Understanding soccer players' match-related fatigue and recovery profiles likely helps with developing conditioning programs that increase team performance and reduce injuries and illnesses. In order to improve match recovery (the return-to-play process and ergogenic interventions) it is also pivotal to determine if match simulation protocols and actual match-play lead to similar responses. OBJECTIVES (1) To thoroughly describe the development of fatigue during actual soccer match play and its recovery time course in terms of physiological, neuromuscular, technical, biochemical and perceptual responses, and (2) to determine similarities of recovery responses between actual competition (11 vs. 11) and match simulations. METHODS A first screening phase consisted of a systematic search on PubMed (MEDLINE) and SportDiscus databases until March 2016. Inclusion criteria were: longitudinal study with soccer players; match or validated protocol; duration > 45 min; and published in English. RESULTS A total of 77 eligible studies (n = 1105) were used to compute 1196 effect sizes (ES). Half-time assessments revealed small to large alterations in immunological parameters (e.g. leukocytes, ES = 1.9), a moderate decrement in insulin concentration (ES = - 0.9) and a small to moderate impairment in lower-limb muscle function (ES = - 0.5 to - 0.7) and physical performance measures (e.g. linear sprint, ES = - 0.3 to - 1.0). All the systematically analyzed fatigue-related markers were substantially altered at post-match. Hamstrings force production capacity (ES = - 0.7), physical performance (2-4%, ES = 0.3-0.5), creatine kinase (CK, ES = 0.4), well-being (ES = 0.2-0.4) and delayed onset muscle soreness (DOMS, ES = 0.6-1.3) remained substantially impaired at G + 72 h. Compared to simulation protocols, 11 vs. 11 match format (CK, ES = 1.8) induced a greater magnitude of change in muscle damage (i.e. CK, ES = 1.8 vs. 0.7), inflammatory (IL-6, ES = 2.6 vs. 1.1) and immunological markers and DOMS (ES = 1.5 vs. 0.7) than simulation protocols at post-assessments. Neuromuscular performances at post-match did not differ between protocols. CONCLUSION While some parameters are fully recovered (e.g. hormonal and technical), our systematic review shows that a period of 72 h post-match play is not long enough to completely restore homeostatic balance (e.g. muscle damage, physical and well-being status). The extent of the recovery period post-soccer game cannot consist of a 'one size fits all approach'. Additionally, the 'real match' (11 vs. 11 format) likely induces greater magnitudes of perceptual (DOMS) and biochemical alterations (e.g. muscle damage), while neuromuscular alterations were essentially similar. Overall, coaches must adjust the structure and content of the training sessions during the 72-h post-match intervention to effectively manage the training load within this time-frame.
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Physiological responses, fatigue and perception of female soccer players in small-sided games with different pitch size and sport surfaces. Biol Sport 2018; 35:291-299. [PMID: 30449947 PMCID: PMC6224843 DOI: 10.5114/biolsport.2018.77829] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Revised: 12/18/2017] [Accepted: 04/24/2018] [Indexed: 11/17/2022] Open
Abstract
The aim of this research was to evaluate the influence of game surface and pitch size on the physiological responses, jump performance and perceptions of sub-elite female soccer players playing four-a-side games. Sixteen sub-elite female soccer players were divided into four groups of four players each. Three small-sided games (SSGs; pitch size: 400 m2, 600 m2 and 800 m2) were played on three surfaces (dirt [DT], artificial turf [AT] and natural grass [NG]). Players' heart rate (HR) was monitored during each game. Before and after each SSG, participants performed two counter-movement jumps (CMJs) and answered a questionnaire based on visual analogue scales (VASs) to indicate their perception of the effort required on each surface. DT obtained lower outputs for most variables. In the SSG 600 mean HR was higher on NG than AT (+3.31 %HRmax; p = 0.029), but players' overall satisfaction with both surfaces was similar (p>0.05). The SSG 400 received the lowest ratings for most variables, whereas the SSG 600 resulted in higher mean HR than SSG 800 [NG (+9.14 b.p.m.; p = 0.001); AT (+7.32 b.p.m.; p = 0.014)]. No surface differences in CMJ performance were found. In conclusion, a higher internal load can be achieved on NG, whereas DT is not recommended for playing soccer. Moreover, the internal load on players in SSGs can be controlled by manipulating pitch size, but over-large pitches may entail a reduction in the physiological profile of female soccer players.
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Diniz da Silva C, Braga CP, Pollard R. The effect on home advantage when a team changes from grass to artificial turf – a worldwide study in professional football. INT J PERF ANAL SPOR 2018. [DOI: 10.1080/24748668.2018.1475196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Cristiano Diniz da Silva
- Research Group in Applied Soccer Sciences, Department of Physical Education, Institute of Life Sciences, Federal University of Juiz de Fora, Minas Gerais, Brazil
| | - Cícero Paschoal Braga
- Research Group in Applied Soccer Sciences, Department of Physical Education, Institute of Life Sciences, Federal University of Juiz de Fora, Minas Gerais, Brazil
| | - Richard Pollard
- Statistics Department, California Polytechnic State University, San Luis Obispo, CA, USA
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Physiological and Physical Responses According to the Game Surface in a Soccer Simulation Protocol. Int J Sports Physiol Perform 2018; 13:612-619. [PMID: 29283689 DOI: 10.1123/ijspp.2017-0570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
PURPOSE Recent studies have shown that soccer players' responses are similar on natural grass (NG) and artificial turf (AT), but they did not control the mechanical properties of these surfaces. This work aimed to analyze the influence of the game surface on amateur soccer players' physical and physiological responses using a soccer simulation protocol. METHODS A total of 16 amateur players performed 3 bouts of the soccer simulation protocol on AT, and, on another day, 3 bouts on NG. The mechanical properties of both surfaces were recorded. The order of surfaces was randomly established for each participant. Physiological responses of players were assessed before and after the 6-repeated-sprints test existing at the midpoint of each bout. Fatigue (% best; % diff) and general variables (total time; best time, mean time; maximum speed) for both the repeated sprint test (RST) and the agility tests (nonlinear actions at maximum speed) incorporated into the soccer simulation protocol were also analyzed. RESULTS The 2 surfaces displayed different mechanical properties. Physical responses were found similar for both surfaces (P > .05) before and after the RST. There were no surface differences in sprint times or fatigue variables for the RST (P > .05). The agility test was faster on AT than on NG in bout 1 (average speed [+1.17 km/h;P = .037]; agility test cut time [-0.31 s; P = .027] and best time [-0.52 s; P = .042]). CONCLUSIONS The differences in the mechanical properties of the 2 surfaces are not sufficient to cause differences in the physiological and physical responses of soccer players, although they may affect turns and cuts.
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Straw CM, Samson CO, Henry GM, Brown CN. Does variability within natural turfgrass sports fields influence ground-derived injuries? Eur J Sport Sci 2018; 18:893-902. [PMID: 29614918 DOI: 10.1080/17461391.2018.1457083] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Natural turfgrass sports fields exhibit within-field variations due to climatic conditions, field construction, field management, and foot traffic patterns from field usage. Variations within a field could influence the playing surface predictability and require athletes to make abrupt or frequent adjustments that lead to increased ground-derived injury occurrence. This study introduces a new methodology aimed at evaluating the potential relationship between within-field variations of turfgrass sports field properties and ground-derived athlete injuries. Collegiate Club Sport athletes self-reported ground-derived injuries over two years. Soil moisture, turfgrass quality, surface hardness, and turfgrass shear strength were quantified from their two home fields. Hot spot analysis identified significantly high (hot spots) and low (cold spots) values within the fields. Injury locations were compared to hot spot maps each month. Binomial proportion tests determined if there were differences between observed injury proportions and expected proportions. Twenty-three ground-derived injuries were reported overall. The observed injury proportions occurring in turfgrass quality cold spots [0.52 (95% CI 0.29-0.76)] and soil moisture hot spots [0.43 (95% CI 0.22-0.66)] was significantly higher than expected [0.20 (p < .001) and 0.21 (p < .05), respectively]. Most injuries in significant areas of turfgrass quality, soil moisture, and surface hardness were along edges of hot and cold spots. These results suggest a potential relationship between within-field variations and ground-derived injuries, particularly in transition areas between non-significant and significant high and low values. Future larger-scale studies can incorporate the reported methodology to validate this relationship and implement strategies that reduce ground-derived injuries.
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Affiliation(s)
- Chase M Straw
- a Department of Crop and Soil Sciences , University of Georgia , Athens , GA , USA.,b Department of Horticultural Science , University of Minnesota , Saint Paul , MN , USA
| | | | - Gerald M Henry
- a Department of Crop and Soil Sciences , University of Georgia , Athens , GA , USA
| | - Cathleen N Brown
- c Department of Kinesiology , University of Georgia , Athens , GA , USA.,d College of Public Health and Human Sciences , Oregon State University , Corvallis , OR , USA
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Rago V, Silva JR, Brito J, Barreira D, Mohr M, Krustrup P, Rebelo AN. Switching between pitch surfaces: practical applications and future perspectives for soccer training. J Sports Med Phys Fitness 2018; 59:510-519. [PMID: 29619795 DOI: 10.23736/s0022-4707.18.08278-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
INTRODUCTION Soccer training and completion is conventionally practiced on natural grass (NG) or artificial turf (AT). Recently, AT pitches for training/competition, and of unstable surfaces for injury prevention training has increased. Therefore, soccer players are frequently exposed to variations in pitch surface during either training or competition. These ground changes may impact physical and physiological responses, adaptations as well as the injury. The aim of this review was to summarize the acute physical and physiological responses, chronic adaptations, and injury risk associated with exercising on different pitch surfaces in soccer. EVIDENCE ACQUISITION Eligible studies were published in English, had pitch surface as an independent variable, and had physical, physiological or epidemiological information as outcome variables. Specific data extracted from the articles included the training response, training adaptations or injury outcomes according to different pitch surfaces. A total of 224 studies were retrieved from a literature search. EVIDENCE SYNTHESIS Twenty articles met the inclusion criteria: 9 for acute physical and physiological responses, 2 for training adaptations and 9 for injury assessment. The literature lacks consistent evidence regarding the effects of pitch surface on performance and health outcomes in soccer players. However, it seems that occasionally switching training surfaces seems a valuable strategy for focusing on specific musculoskeletal queries and enhancing players' fitness. For instance, sand training may be occasionally proposed as complementary training strategy, given the recruitment of additional musculature probably not involved on firmer surfaces, but the possible training-induced adaptations of non-conventional soccer surfaces (e.g., sand) might potentially result into a negative transfer on AT or NG. CONCLUSIONS Since the specific physical demands of soccer can differ between surfaces, coaches should resort to the use of non-traditional surfaces with parsimony, emphasizing the specific surface-related motor tasks, normally observed on natural grass or artificial turf. Further studies are required to better understand the physiological effects induced by systematic surface-specific training, or switching between pitch surfaces.
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Affiliation(s)
- Vincenzo Rago
- Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Porto, Portugal - .,Unit of Health and Performance, Portuguese Football Federation, Lisbon, Portugal -
| | - João R Silva
- National Sports Medicine Programme Excellence in Football Project, Aspetar-Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
| | - João Brito
- Unit of Health and Performance, Portuguese Football Federation, Lisbon, Portugal
| | - Daniel Barreira
- Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Porto, Portugal
| | - Magni Mohr
- Center of Health Sciences, Faculty of Natural and Health Sciences Tórshavn, University of the Faroe Islands, Tórshavn, Faroe Islands.,Department of Sports Science and Clinical Biomechanics, Faculty of Health Sciences, SDU Sport and Health Sciences Cluster (SHSC), University of Southern Denmark, Odense, Denmark.,Center of Health and Human Performance, Department of Food and Nutrition, and Sport Science, University of Gothenburg, Gothenburg, Sweden
| | - Peter Krustrup
- Department of Sports Science and Clinical Biomechanics, Faculty of Health Sciences, SDU Sport and Health Sciences Cluster (SHSC), University of Southern Denmark, Odense, Denmark
| | - António N Rebelo
- Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Porto, Portugal
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López-Fernández J, García-Unanue J, Sánchez-Sánchez J, León M, Hernando E, Gallardo L. Neuromuscular responses and physiological patterns during a soccer simulation protocol. Artificial turf versus natural grass. J Sports Med Phys Fitness 2017; 58:1602-1610. [PMID: 28944649 DOI: 10.23736/s0022-4707.17.07768-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Latest studies suggest similar performance of soccer players either on artificial turf (AT) or natural grass (NG). However, it is not clear if their muscular and physiological responses are also similar on both surfaces. This research aims to assess the influence of game surface on physiological patterns and neuromuscular responses of soccer players during a soccer simulation protocol (SSP) that incorporates repeated sprints and nonlinear actions at maximum speed. METHODS Sixteen amateur soccer players completed three bouts of the SSP on both AT and NG. The mechanical behaviour of both surfaces was recorded and the order was randomly established for each player. The physiological responses were measured during the SSP. A contra-movement jump and a tensiomyography analysis of the rectus femoris (RF) and biceps femoris (BF) were assessed right before and right after the SSP. RESULTS Both surfaces presented different mechanical properties. No differences among either surfaces or bouts were found for heart rate (HR) peak and HR mean (P>0.05). While the half-relaxation time of the RF on NG decreased after the SSP (right-leg: -44.430 ms; P=0.049; left-leg: -52.131 ms; P=0.008), the sustain time of the BF decreased after the SSP on AT (right-leg: +64.868 ms; P=0.007; left-leg: +87.564 ms; P<0.001). No differences between surfaces were found for the contra-movement jump. CONCLUSIONS The mechanical behaviour of both surfaces does not differ enough to cause different physiological and neuromuscular responses. Playing on AT should cause similar neuromuscular responses to NG.
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Affiliation(s)
| | | | | | - Manuel León
- IGOID Research Group, University of Castilla-La Mancha, Toledo, Spain
| | - Enrique Hernando
- IGOID Research Group, University of Castilla-La Mancha, Toledo, Spain
| | - Leonor Gallardo
- IGOID Research Group, University of Castilla-La Mancha, Toledo, Spain
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Bianco A, Spedicato M, Petrucci M, Messina G, Thomas E, Nese Sahin F, Paoli A, Palma A. A Prospective Analysis of the Injury Incidence of Young Male Professional Football Players on Artificial Turf. Asian J Sports Med 2016; 7:e28425. [PMID: 27217929 PMCID: PMC4870829 DOI: 10.5812/asjsm.28425] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 05/27/2015] [Accepted: 05/30/2015] [Indexed: 11/16/2022] Open
Abstract
Background: The effects of synthetic surfaces on the risk of injuries is still debated in literature and the majority of published data seems to be contradictory. For such reasons the understanding of injury incidence on such surfaces, especially in youth sport, is fundamental for injury prevention. Objectives: The aim of this study was to prospectively report the epidemiology of injuries in young football players, playing on artificial turfs, during a one sports season. Patients and Methods: 80 young male football players (age 16.1 ± 3.7 years; height 174 ± 6.6 cm; weight 64.2 ± 6.3 kg) were enrolled in a prospective cohort study. The participants were then divided in two groups; the first included players age ranging from 17 to 19 (OP) whereas the second included players age ranging from 13 to 16 (YP). Injury incidence was recorded prospectively, according to the consensus statement for soccer. Results: A total of 107 injuries (35 from the OP and 72 from the YP) were recorded during an exposure time of 83.760 hours (incidence 1.28/1000 per player hours); 22 during matches (incidence 2.84/1000 per player hours, 20.5%) and 85 during training (incidence 1.15/1000 per player hours, 79.5%). Thigh and groin were the most common injury locations (33.6% and 21.5%, respectively) while muscle injuries such as contractures and strains were the most common injury typologies (68.23%). No statistical differences between groups were displayed, except for the rate of severe injuries during matches, with the OP displaying slightly higher rates compared to the YP. Severe injuries accounted for 10.28% of the total injuries reported. The average time lost due to injuries was 14 days. Re-injuries accounted for 4.67% of all injuries sustained during the season. Conclusions: In professional youth soccer injury rates are reasonably low. Muscle injuries are the most common type of injuries while groin and thigh the most common locations. Artificial turf pitches don’t seem to contribute to injury incidence in young football players.
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Affiliation(s)
- Antonino Bianco
- Sport and Exercise Sciences Research Unit, University of Palermo, Palermo, Italy
| | | | - Marco Petrucci
- Sport and Exercise Sciences Research Unit, University of Palermo, Palermo, Italy
- U.S. Città di Palermo Football Club, Palermo, Italy
| | - Giuseppe Messina
- Sport and Exercise Sciences Research Unit, University of Palermo, Palermo, Italy
- Postura Lab Research Institute, Palermo, Italy
| | - Ewan Thomas
- Sport and Exercise Sciences Research Unit, University of Palermo, Palermo, Italy
- Corresponding author: Ewan Thomas, Sport and Exercise Sciences Research Unit, University of Palermo, Palermo, Italy. Tel: +39-09123896910, Fax: +39-09123860894, E-mail:
| | - Fatma Nese Sahin
- Faculty of Physical Education and Sport, Ankara University, Ankara, Turkey
| | - Antonio Paoli
- Department of Biomedical Science, University of Padova, Padova, Italy
| | - Antonio Palma
- Sport and Exercise Sciences Research Unit, University of Palermo, Palermo, Italy
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