scholarly journals Diferencias entre distintas orientaciones del espacio, relativizadas al perfil individual del jugador (Differences between distinct spatial orientations based on individual player profile)

Retos ◽  
2018 ◽  
pp. 3-6
Author(s):  
Jose Antonio Asian Clemente ◽  
Luis Suárez-Arrones ◽  
Slavador Sánchez Gil
Keyword(s):  
Spatial Orientation ◽  
External Load ◽  
Soccer Players ◽  
Subjective Perception ◽  
Physical Demands ◽  
Youth Soccer ◽  
Recovery Times ◽  
Individual Player ◽  
Physical Profile

El objetivo de este estudio fue comprobar la influencia de la modificación de la orientación del espacio de juego (mayor anchura o profundidad) en la carga interna y externa de los jugadores de fútbol relativizada en función de su perfil físico. Para ello se analizó la respuesta de carga interna y externa de 10 jugadores juveniles de fútbol durante dos sesiones de entrenamiento donde realizaron 2 juegos reducidos (JR) durante 3 series de 4 minutos con 2 minutos de recuperación en un 5vs5 con portero, con un mismo espacio relativo por jugador (120 m2) pero distinta orientación del espacio (30x40 m vs 40x30 m). Los resultados mostraron como independientemente de la orientación del espacio de juego utilizado, el rendimiento de los jugadores disminuyó a medida que avanzaba el número de series, realizando una mayor DT, DT>VT2 y aceleraciones entre 2 y 4 m/ m·s-2 en la primera serie respecto a la tercera, encontrando en esta última substancialmente mayores valores de percepción subjetiva esfuerzo. Cuando se compararon ambos JR se obtuvieron mayores demandas de carrera y aceleraciones cuando se priorizó la profundidad respecto a la anchura. Este estudio demuestra la importancia de programar adecuados tiempos de recuperación entre series de JR para mantener similares demandas físicas y configura la orientación del espacio de juego como otro elemento que disponen los entrenadores para modificar las demandas físicas de los JR.Abstract. The aim of this study was to verify the influence of the modification of the game spatial orientation (greater width or depth) on the internal and external load of soccer players based on their individualized physical profile. For this purpose, the internal and external load responses of 10 youth soccer players were analysed during training sessions characterized by 2 small sided games (SSG) based on a 5vs5 with the goalkeeper, performed in three 4-minute sets with 2 minutes of passive recovery, keeping the same pitch area per player (120 m2), but different spatial orientations (30x40 m versus 40x30 m). The results showed that regardless of the orientation of the playing space used, players’ performance decreased over the sets, obtaining higher DT, DT> VT2 and accelerations between 2 and 4 m/m·s- 2 in the first set compared to the third, with substantially higher values of subjective perception effort in the latter. When both JRs were compared, greater running demands and accelerations were obtained when the depth was prioritized over the width. This study demonstrates the importance of programming adequate recovery times between JR series to maintain the physical demands, as well as it emphasizes the role of game spatial orientation as one of the elements that coaches can use to modify JR physical demands.

scholarly journals Player Load and Metabolic Power Dynamics as Load Quantifiers in Soccer

2019 ◽  
Vol 69 (1) ◽  
pp. 259-269 ◽  
Author(s):  
Pedro Reche-Soto ◽  
Donaldo Cardona-Nieto ◽  
Arturo Diaz-Suarez ◽  
Alejandro Bastida-Castillo ◽  
Carlos Gomez-Carmona ◽  
...  
Keyword(s):  
External Load ◽  
National Level ◽  
Objective Analysis ◽  
Soccer Players ◽  
Power Dynamics ◽  
Metabolic Power ◽  
Physical Demands ◽  
Performance Reduction ◽  
Specific Position ◽  
The Relationship

Abstract There has recently been an increase in quantification and objective analysis of soccer performance due to improvements in technology using load indexes such as Player Load (PL) and Metabolic Power (MP). The objectives of this study were: (1) to describe the performance of PL and MP in competition according to the specific role, match‐to‐ match variation, periods of play, game location and match status according to game periods, and (2) to analyze the relationship between both indexes. Twenty‐one national‐level soccer players were distributed in the following specific positional roles: external defenders (ED) (n = 4), central defenders (CD) (n = 4), midfielders (M) (n = 5), external midfielders (EM) (n = 4) and attackers (A) (n = 4). A total of 12 matches played by a Spanish Third Division team during the 2016/2017 season were analyzed. WIMU PROTM inertial devices (RealTrack System, Almeria, Spain) were used for recording the data. The main results were: (1) a performance reduction in both variables over the course of match time, (2) significant differences in both variables based on the specific position, (3) differences in physical demands during the season matches, (4) winning during a game period and the condition of being the visitor team provoked higher demands, and (5) a high correlation between both variables in soccer. In conclusion, different contextual variables influence the external load demands; both indexes are related so they could be used for external load quantification, and it is necessary to analyze physical demands of the competition for a specific and individualized load design in training sessions.

The influence of youth soccer players’ sprint performance on the different sided games’ external load using GPS devices

2019 ◽  
Vol 28 (2) ◽  
pp. 194-205 ◽  
Author(s):  
Daniel Castillo ◽  
Javier Raya-González ◽  
Filipe Manuel Clemente ◽  
Javier Yanci
Keyword(s):  
External Load ◽  
Sprint Performance ◽  
Soccer Players ◽  
Youth Soccer ◽  
Gps Devices

scholarly journals Activity Profiles by Position in Youth Elite Soccer Players in Official Matches

2019 ◽  
Vol 03 (01) ◽  
pp. E19-E24 ◽  
Author(s):  
Svein Arne Pettersen ◽  
Tormod Brenn
Keyword(s):  
High Intensity ◽  
External Load ◽  
Training Programs ◽  
Activity Patterns ◽  
Soccer Players ◽  
Maximum Speed ◽  
Peak Period ◽  
Significant Drop ◽  
Match Play ◽  
Youth Soccer

AbstractIn order to investigate activity profiles and external load patterns in elite youth soccer players, we studied high-intensity activity patterns, maximum running speed, and temporary and end-of-match decline in external load in 54 U17 players (96 match observations) over a full season of official match play.Wide midfielders covered most high-intensity running (HIR) distance (1044.2 m), most sprinting distance (224.4 m), and the highest number of accelerations (185.2); center defenders had the lowest values for these activities (508.3 m, 85.1 m, and 119.0), respectively. Wide midfielders had the highest and center defenders had the lowest maximum speed (30.3 km · h − 1 and 28.6 km · h − 1), respectively. During the matches, players in all playing positions displayed a significant drop in HIR distance, sprinting distance, and number of accelerations. This was especially pronounced in the 5 min following the 5-min peak period and in the last 5-min period for sprinting distance.There are substantial differences in activity profiles by positions, but all players show temporary and end-of-match drop in external load. The variation in activity profiles by playing position in this study may aid in the design of training programs. The considerable end-of-match drop in external load observed raises the question of the favorability of 90 min match times for U17 players.

Team identity in youth soccer: The role of coaches' feedback patterns and use of humour

2017 ◽  
Vol 12 (6) ◽  
pp. 697-707 ◽  
Author(s):  
Rune Høigaard ◽  
Tommy Haugen ◽  
Bjørn T Johansen ◽  
Rune Giske
Keyword(s):  
Structural Equation ◽  
Soccer Players ◽  
Instructive Feedback ◽  
Team Identity ◽  
Cross Sectional ◽  
Youth Soccer ◽  
Cross Sectional Design ◽  
Future Work ◽  
The Relationship

The purpose of this study was to empirically examine the relationship between coaches' communication patterns (feedback and use of humour) and team identity in youth soccer. A cross-sectional design was used and participants were 532 soccer players, aged from 13 to 20 years, taking part in a youth soccer tournament, the Sør Cup. Structural Equation Modelling based multiple regression analysis was conducted, and the findings revealed that positive/instructive feedback and coaches' use of humour were positive significant predictors of team identity. Contrary to our expectations, negative/punishment feedback was not significantly related to team identity. The findings are discussed within a social identity framework. It is concluded that positive/instructive feedback and the use of humour are elements that coaches may use to develop the team identity. However, future work is needed to further validate the scales used in this study, and to examine how the use of humour may influence the athlete and the team.

scholarly journals Session-To-Session Variations of External Load Measures of Youth Soccer Players in Medium-Sided Games

2019 ◽  
Vol 16 (19) ◽  
pp. 3612
Author(s):  
Filipe Manuel Clemente ◽  
Alireza Rabbani ◽  
Mehdi Kargarfard ◽  
Pantelis Theodoros Nikolaidis ◽  
Thomas Rosemann ◽  
...  
Keyword(s):  
Confidence Interval ◽  
Coefficient Of Variation ◽  
External Load ◽  
Soccer Players ◽  
Small Decrease ◽  
Youth Soccer ◽  
Distance Range ◽  
Time Motion ◽  
Typical Error ◽  
Stable Performance

The aim of this study was to analyze the variability of time-motion variables during five vs. five games when completed within the same session as, and between, two different sessions. Ten under-19 male soccer players (18.27 ± 0.47 years old) participated in this study. The five vs. five matches (3 × 5 min) were played twice with a 3-day interval of rest in the same week. Moderate between-session variations were observed for TD (total distance) (range coefficient of variation (CV), 6.9; 8.3%, confidence interval (CI), (5.0; 14.0), standardized typical error (STE), 0.68; 1.06, (0.64; 1.75)) and RD (running distance) (range CV, 53.3; 145.7%, (36.6; 338.9), STE, 0.83; 1.09, (0.60; 1.76)). PL (player load) showed small variations (range CV, 4.9; 6.0%, [3.6; 10.1], STE, 0.37; 0.43, (0.27; 0.71)). In within-session analyses for examining the differences between sets, a small decrease was observed in RD in set 3 versus set 2 (−14.8%, 90% CI (−32.1; 6.9%); standardized difference (ES): −0.39 (0.95; 0.16)). TD decreased with moderate (−3.5%, (−6.8; −0.1%); ES: −0.65(−1.30; −0.01)) and large (−8.2%, (−11.4; −4.9%); ES: −1.58(−2.24; −0.92)) effects in sets 2 and 3, respectively, versus set 1. Our results suggest that PL is the most stable performance variable. It was also verified that measures had a progressive decreasing tendency within a session.

scholarly journals Variation in the Correlation Between Heart Rate and Session Rating of Perceived Exertion-Based Estimations of Internal Training Load in Youth Soccer Players

2019 ◽  
Vol 31 (1) ◽  
pp. 91-98 ◽  
Author(s):  
Durva Vahia ◽  
Adam Kelly ◽  
Harry Knapman ◽  
Craig A. Williams
Keyword(s):  
Heart Rate ◽  
Confidence Interval ◽  
External Load ◽  
Perceived Exertion ◽  
Training Load ◽  
Rating Of Perceived Exertion ◽  
Soccer Players ◽  
Youth Soccer ◽  
Validity Analysis ◽  
Consistent Method

Purpose: When exposed to the same external load, players receive different internal loads, resulting in varied adaptations in fitness. In adult soccer, internal training load is measured using heart rate (HR) and session rating of perceived exertion (sRPE) scales, but these have been underutilized in youth soccer. This study investigated the in-season variation in correlation between HR and sRPE estimations of training load for adolescent soccer players. Method: Fifteen male professional adolescent players were monitored for 7 months. Within-participant correlations and Bland–Altman agreement plots for HR and sRPE were calculated for each month to analyze variation over the season and for individual players to analyze the validity of the scale. Results: The monthly correlations ranged from r = .60 to r = .73 (P < .05) and the overall correlation was r = .64 (95% confidence interval, .60–.68; P < .001). Bland–Altman plots showed an agreement of methods. Conclusion: Results showed consistently large correlations for all months. sRPE is a consistent method of measure of internal training load for the entire season for youth soccer players. Validity analysis found no bias in sRPE measurements when compared with HR for all players in the study.

Effects of a Very Congested Match Schedule on Body-Load Impacts, Accelerations, and Running Measures in Youth Soccer Players

2015 ◽  
Vol 10 (2) ◽  
pp. 248-252 ◽  
Author(s):  
Ademir F.S. Arruda ◽  
Christopher Carling ◽  
Vinicius Zanetti ◽  
Marcelo S. Aoki ◽  
Aaron J. Coutts ◽  
...  
Keyword(s):  
High Intensity ◽  
External Load ◽  
Soccer Players ◽  
Running Speed ◽  
Positioning Systems ◽  
Youth Soccer ◽  
Total Distance ◽  
Global Positioning ◽  
Alternative Means ◽  
Body Load

Purpose:To analyze the effects of a very congested match schedule on the total distance (TD) covered, high-intensity-running (HIR) distance, and frequency of accelerations and body-load impacts (BLIs) performed in a team of under-15 soccer players (N = 10; 15.1 ± 0.2 y, 171.8 ± 4.7 cm, 61 ± 6.0 kg) during an international youth competition.Methods:Using global positioning systems, player performances were repeatedly monitored in 5 matches performed over 3 successive days.Results:Significant differences were observed between matches (P < .05) for the frequency of accelerations per minute, BLIs, and BLIs per minute. No differences were observed for the TD covered, TD run per minute, number of high-intensity runs, distance covered in HIR, per-minute peak running speed attained, or frequency of accelerations. The frequency of accelerations per minute decreased across the competition while BLIs were higher during the final than in all other matches.Conclusions:These results suggest that BLIs and acceleration might be used as an alternative means to represent the external load during congested match schedules rather than measures related to running speed or distance covered.

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