scholarly journals Finding efficient strategies in 3-versus-2 small-sided games of youth soccer players

Kinesiology ◽  
2019 ◽  
Vol 51 (1) ◽  
Author(s):  
Roland Leser ◽  
Thomas Hoch ◽  
Xiaoying Tan ◽  
Bernhard Moser ◽  
Gernot Kellermayr ◽  
...  
Keyword(s):  
Tracking System ◽  
Time Instant ◽  
Soccer Players ◽  
Position Tracking ◽  
New Approach ◽  
Game Analysis ◽  
Youth Soccer ◽  
Soccer Team ◽  
Spatio Temporal

Most existing game analysis attempts do not consider situational context information sufficiently for the assessments of tactical behaviour. The purpose of this case study was to apply a new analysis approach, so far only used for 1-versus-1 analyses in soccer, to small-sided games and to identify and analyse therewith the efficiency of tactical patterns in 3-versus-2 game play. Therefore, 279 games, performed by an elite youth soccer team, were recorded by video and a position tracking system. The data was processed by the new approach, including unsupervised machine learning routines and artificial intelligence methods. Two crucial moments were used to analyse the occurring tactical patterns for the specific game: T0 (time instant of the shot) and T1 (time instant of the last action before the shot). For both moments typical tactical patterns, considering the spatio-temporal context of the situations were found. By combining the patterns of both moments, hidden tactical strategies were identified and their efficiencies calculated. The most significant result is that offence attempts have the highest scoring probability when played via the wings near to the goal line and the final pass, before the shot, is given against the playing direction into the centre of the field.

scholarly journals A case study comparison of objective and subjective evaluation methods of physical qualities in youth soccer players

2020 ◽  
Vol 38 (11-12) ◽  
pp. 1304-1312 ◽  
Author(s):  
James H. Dugdale ◽  
Dajo Sanders ◽  
Tony Myers ◽  
A. Mark Williams ◽  
Angus M. Hunter
Keyword(s):  
Subjective Evaluation ◽  
Evaluation Methods ◽  
Soccer Players ◽  
Youth Soccer ◽  
Objective And Subjective Evaluation

scholarly journals Risk Factors for Lower Extremity Overuse Injuries in Female Youth Soccer Players

2017 ◽  
Vol 5 (10) ◽  
pp. 232596711773396 ◽  
Author(s):  
John W. O’Kane ◽  
Moni Neradilek ◽  
Nayak Polissar ◽  
Lori Sabado ◽  
Allan Tencer ◽  
...  
Keyword(s):  
Risk Factors ◽  
Lower Extremity ◽  
Female Athletes ◽  
Knee Injuries ◽  
Soccer Players ◽  
Overuse Injuries ◽  
Female Youth ◽  
Youth Soccer ◽  
Increased Risk ◽  
Soccer Team

Background: Youth soccer injuries are common and of increasing concern, with sport specialization occurring at younger ages. Limited research is available regarding overuse injuries and risk factors in young female athletes. Purpose: To identify the number and rate of overuse injuries in female soccer players (ages 12-15 years), describe the anatomic location and type of injury, and evaluate contributing risk factors. Study Design: Case-control study; Level of evidence, 3. Methods: A total of 351 female youth soccer players, ages 12 to 15 years, from Washington State were evaluated from 2008 to 2012. Players with lower extremity overuse injuries were identified through weekly emails and were interviewed by telephone to obtain data on injury type and body region. We evaluated the association between overuse injuries and preseason risk factors, including joint hypermobility, hip and knee muscle strength, and jump biomechanics, using Poisson regression to estimate relative risk (RR) and 95% CIs. Results: The incidence rate for first-time lower extremity overuse injuries was 1.7 per 1000 athlete-exposure hours (AEH; 95% CI, 1.4-2.2), and that for repeat injuries was 3.4 per 1000 AEH (95% CI, 2.1-5.6). Knee injuries accounted for 47% of overuse injuries. Increased valgus was associated with a 3.2-fold increased risk (95% CI, 1.52-6.71) for knee injury. A 1–standard deviation (SD) increase in hamstring strength was associated with a 35% decreased risk (RR, 0.65; 95% CI, 0.46-0.91) for overuse knee injuries, and a 1-SD increase in quadriceps strength was associated with a 30% decreased risk (RR, 0.70; 95% CI, 0.50-0.98). A 1-SD increase in hip flexor strength was associated with a 28% decreased risk (RR, 0.72; 95% CI, 0.51-1.00) for overuse knee injuries, and a 1-SD increase in external rotation strength was associated with a 35% decreased risk (RR, 0.65; 95% CI, 0.46-0.91). Playing on more than 1 soccer team was associated with a 2.5-fold increased risk (95% CI, 1.08-5.35) for overuse knee injuries, and participating in other physical activities was associated with a 61% decreased risk (odds ratio, 0.39; 95% CI, 0.15-0.81). Conclusion: In this study, lower extremity overuse injuries in female youth soccer players affected primarily the knee. Lower knee separation distance, decreased lower extremity strength, and playing on more than 1 soccer team increased injury risk.

scholarly journals Training Load in Different Age Category Soccer Players and Relationship to Different Pitch Size Small-Sided Games

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5220
Author(s):  
Fernando J. Santos ◽  
Teresa P. Figueiredo ◽  
Dalton M. Pessôa Pessôa Filho ◽  
Carlos E. L. Verardi ◽  
Anderson G. Macedo ◽  
...  
Keyword(s):  
Tracking System ◽  
Training Load ◽  
Ultra Wideband ◽  
Soccer Players ◽  
Position Tracking ◽  
Metabolic Power ◽  
Running Speed ◽  
Null Values ◽  
Load Evaluation ◽  
Age Category

This study sought to evaluate the training load in different age category soccer players associated with distinct pitch size small-sided games (SSGs). Twenty-four soccer players (eight in each age category: U-12, U-15, and U-23) performed three consecutive 4 vs. 4 ball possession SSGs (SSG1: 16 × 24 m; SSG2: 20 × 30 m; and SSG3: 24 × 36 m) all with 3 min duration and 3 min rest. Subjects carried ultra-wideband-based position-tracking system devices (WIMU PRO, RealTrack System). Total distance covered increased from SSG1 to SSG3 in all age categories and predominantly in running speeds below 12 km∙h−1. Moreover, distance covered in 12–18 km∙h−1 running speed was different in all performed SSGs and age categories. Residual or null values were observed at 18–21 km∙h−1 or above running speed, namely in U-12, the only age category where metabolic power and high metabolic load distance differences occurred throughout the performed SSGs. Edwards’ TRIMP differences between age categories was only observed in SSG2 (U-12 < U-15). The design of SSGs must consider that the training load of the players differs according to their age category and metabolic assessment should be considered in parallel to external load evaluation in SSGs. Wearable technology represents a fundamental support in soccer.

scholarly journals Spanish Elite Soccer Reserve Team Configuration and the Impact of Physical Fitness Performance

2020 ◽  
Vol 71 (1) ◽  
pp. 211-218 ◽  
Author(s):  
Asier Los Arcos ◽  
Raúl Martínez-Santos ◽  
Daniel Castillo
Keyword(s):  
Physical Fitness ◽  
Soccer Players ◽  
Countermovement Jump ◽  
Training Process ◽  
Youth Soccer ◽  
Fitness Tests ◽  
Soccer Team ◽  
The Impact ◽  
Selection Of

AbstractThe aim of this study was threefold: 1) to assess the configuration of an elite reserve soccer team, 2) to compare physical fitness performance of promoted and new players according to the playing position, and 3) to analyze the level of competitive participation attained by these players. We considered physical fitness tests (5 m and 15 m sprint, countermovement jump [CMJ] and aerobic endurance) performed by 192 players (age = 20.2 ± 2.3 years) enrolled in the reserve team of a Spanish La Liga club from 1994 to 2013. The players were classified according to the previous club criterion (promoted from the soccer academy and new players signed from other clubs), b) their playing position, and c) the competitive level attained until the 2016/2017 season (Spanish 1st and 2nd Divisions and the remaining competition levels). The proportion of promoted and new players was similar (p = 0.47). Overall, no substantial differences (unclear-small) were found in physical fitness performance between promoted and new players. Considering the playing position, promoted lateral defenders (LDs) showed better sprinting (ES = moderate) and CMJ (ES = moderate) performance than new LDs. In addition, promoted central midfielders (CMs) demonstrated better performance in the 5 m sprint and the CMJ (ES = moderate) than new CMs. The percentage of players who later competed in the Spanish 1st and 2nd Divisions was greater in promoted players compared to new players (p = 0.006). Physical fitness performance did not determine the selection of new players in a soccer elite reserve team. We may conclude that soccer academies should prioritize the selection and the training process of youth soccer players.

SHOE SIZING SYSTEM FOR MALAYSIAN YOUTH SOCCER PLAYERS: A PRELIMINARY STUDY ON THE FOOT ANTHROPOMETRY

2014 ◽  
Author(s):  
Zahari Taha ◽  
◽  
Mohd Azri Aris ◽  
Mohd Hasnun Arif Hassan ◽  
Anwar PP Abdul Majeed ◽  
...  
Keyword(s):  
Soccer Players ◽  
Youth Soccer ◽  
Sizing System ◽  
Preliminary Study

Spatio-temporal approach for identification of critical conservation areas: a case study with two pine species from a threatened temperate forest in Mexico

2019 ◽  
Vol 28 (7) ◽  
pp. 1863-1883 ◽  
Author(s):  
Agustín Molina Sánchez ◽  
Patricia Delgado ◽  
Antonio González-Rodríguez ◽  
Clementina González ◽  
A. Francisco Gómez-Tagle Rojas ◽  
...  
Keyword(s):  
Temperate Forest ◽  
Conservation Areas ◽  
Spatio Temporal ◽  
Pine Species
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