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.

scholarly journals Heart Rate Response and Match Repeated-Sprint Performance in Chinese Elite Youth Soccer Players

2011 ◽  
Vol 17 (2) ◽  
pp. 42-49
Author(s):  
Del P. WONG ◽  
Karim CHAMARI ◽  
Anis CHAOUACHI ◽  
Tze Chung LUK ◽  
Patrick Wing Chung LAU
Keyword(s):  
Heart Rate ◽  
Recovery Period ◽  
Interval Training ◽  
Cardiovascular Fitness ◽  
Sprint Performance ◽  
Soccer Players ◽  
Active Recovery ◽  
Youth Soccer ◽  
Repeated Sprint ◽  
Soccer Teams

LANGUAGE NOTE | Document text in English; abstract also in Chinese. The purpose of this study is to investigate the heart rate (HR) repose and repeated-sprint performance throughout the match among Chinese elite youth soccer players. Two elite youth soccer teams each consisted of 11 players participated in the study. The HR measurement and repeated-sprint test were conducted (age: 17.1±0.85, height: 173± 5.2cm; weight: 64.2± 8.1kg). HR was recorded every 5s throughout the match, while repeated-sprint consisted of three 30m sprints separated by a 25s active recovery period that was conducted: 5min before the match (T1), 5min before the end of the first half (T2), 5min before the start of the second half (T3), and 5min before the end of the second half (T4). HR was in the range of 160-169bpm for 25% of total play time, followed by 170-179bpm for 23.6%. HR during the 46-60min was significantly lower than other intervals (P<0.05), and repeated-sprint time at T3 was significantly slower than others. The intensity of the match was lower than those found in European players, indicating the cardiovascular fitness and repeated-sprint performance are needed among the players. High-intensity and low-volume interval training, and re-warm up before the start of second half are suggested in the training program. 本研究旨在測定中國青年足球運動員比賽時的心率及重覆衝跑測試表現。對兩支分由11人組成的足球隊運動員(年齡17.1±0.85歲，身高：173±5.2釐米，體重; 64.2±8.1公斤)進行了心率測量以及重覆衝跑測試。比賽時每5秒鍾記錄一次心率。重覆衝跑測試由3次30米衝跑組成，每次有25秒動態休息。重覆衝跑測試共進行四次，分別在：賽前5分鐘(T1)，中場前5分鐘(T2)，下半場開始前5分鐘(T3)及比賽結束前5分鐘(T4)進行。結果在25%的比賽時間內，運動員的心率在每分鐘160-169之間，其次是23.6%的時間內為每分鐘170-179。在46-60分鐘的比賽中，運動員的心率顯著低於其他時段(P<0.05),而運動員在第三次重覆衝跑測試時的速度顯著低於其他三次測試。本次研究結果顯示比賽強度低於歐洲青年足球員進行的同類測試，說明中國青年足球運動員需要加強心肺功能及提高重覆衝跑的表現。建議訓練時進行大強度低密度的間歇訓練，及在比賽中場開始前再次進行熱身。

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.

Correlation of Fiber-Type Composition and Sprint Performance in Youth Soccer Players

2019 ◽  
Vol 33 (10) ◽  
pp. 2629-2634
Author(s):  
Thomas Metaxas ◽  
Athanasios Mandroukas ◽  
Yiannis Michailidis ◽  
Nikolaos Koutlianos ◽  
Kosmas Christoulas ◽  
...  
Keyword(s):  
Fiber Type ◽  
Sprint Performance ◽  
Soccer Players ◽  
Youth Soccer ◽  
Fiber Type Composition ◽  
Type Composition

Reliability and Validity of a Soccer-Specific Test of Prolonged Repeated-Sprint Ability

2007 ◽  
Vol 2 (2) ◽  
pp. 137-149 ◽  
Author(s):  
Jon L. Oliver ◽  
Neil Armstrong ◽  
Craig A. Williams
Keyword(s):  
Reliability And Validity ◽  
Sprint Performance ◽  
Soccer Players ◽  
Average Intensity ◽  
Soccer Match ◽  
Youth Soccer ◽  
Repeated Sprint Ability ◽  
Total Distance ◽  
Repeated Sprint ◽  
Sprint Ability

Purpose:The purpose of the study was to assess the reliability and validity of a newly developed laboratory protocol to measure prolonged repeated-sprint ability (RSA) during soccer-specific exercise.Methods:To assess reliability, 12 youth soccer players age 15.2 ± 0.3 y performed 2 trials of a soccer-specific intermittent-exercise test (SSIET) separated by 3 months. The test was performed on a nonmotorized treadmill. A separate sample of 12 youth soccer players (15.2 ± 0.3 y) completed the SSIET while simultaneously HR, VO2, and blood lactate (BLa) were monitored. The SSIET was designed to replicate the demands of competing in one half of a soccer match while sprint performance was monitored. The test included a 5-s sprint every 2 min.Results:The mean coefficient of variation was 2.5% for the total distance covered during the SSIET and 3.8% for the total distance sprinted; measures of power output were less reliable (>5.9%). Participants covered 4851 ± 251 m during the SSIET, working at an average intensity of 87.5% ± 3.2% HRpeak and 70.2% ± 3.1% VO2peak, with ~7mmol/L BLa accumulation. A significant reduction (P < .05) in sprint performance was ob served over the course of the SSIET.Conclusion:The SSIET provided a reliable method of assessing prolonged RSA in the laboratory. The distance covered and the physiological responses during the SSIET successfully recreated the demands of competing in a soccer match.

scholarly journals Comparison of external load on high speed actions in friendly macth and training sessions (Comparación de carga externa en las acciones de alta velocidad en paridos amistosos y sesiones de entrenamientos)

Retos ◽  
2017 ◽  
pp. 54-57
Author(s):  
Francisco Javier Toscano Bendala ◽  
Miguel Angel Campos Vázquez ◽  
Luis Jesús Suarez-Arrones ◽  
Francisco Javier Núñez Sánchez
Keyword(s):  
High Velocity ◽  
External Load ◽  
High Speed ◽  
Sampling Frequency ◽  
Soccer Players ◽  
Professional Soccer ◽  
Soccer Team ◽  
Gps Devices ◽  
And Training

The aim of the current research was to find out the differences that exist between the external load in high-velocity actions (SP+) in competitions and in training sessions of professional soccer team. We took as SP+ indicators those actions that the soccer players performed over 23 km·h-1 and could be held for at least 1 second. It was monitored 25 professional players belonging to the first team of a team of the first Spanish soccer division, and were used 10 GPS devices were used (SPI, ELITE model, GPSport, Canberra, Australia). These GSPORT transmitters have a sampling frequency of 1 Hz. The results of our study showed how during the game, the players performed substantially more number of SP+ de 1 s, 2 s, 3 s y 4 s (per minute of activity) than during training.Resumen.  El objetivo de esta investigación fue encontrar las diferencias que existen entre la carga externa en acciones de alta velocidad (SP+) en paridos amistosos de pretemporada y las sesiones de entrenamientos en un equipo de fútbol profesional. Tomamos como indicadores SP + aquellas acciones que realizan los jugadores de fútbol por encima de 23 km·h-1 y pudiendo ser mantenidas durante al menos 1 segundo. Se monitorizaron 25 jugadores profesionales pertenecientes a la primera plantilla de un equipo de la primera división de fútbol español, y se utilizaron 10 dispositivos GPS (SPI, ELITE model, GPSport, Canberra, Australia). Estos transmisores GPSORT, tienen una frecuencia de muestreo de 1 Hz. Los resultados de nuestro estudio manifestaron como durante el partido, los jugadores realizaron de manera sustancial más número de SP+ de 1 s, 2 s, 3 s y 4 s (por minuto de actividad) que durante los entrenamientos.

scholarly journals M. biceps femoris architecture and sprint ability in youth soccer players: a cross-sectional analysis

2020 ◽  
Author(s):  
Paul Ritsche ◽  
Thomas Bernhard ◽  
ralf roth ◽  
Eric Lichtenstein ◽  
Martin Keller ◽  
...  
Keyword(s):  
Muscle Injury ◽  
Biceps Femoris ◽  
Sprint Performance ◽  
Soccer Players ◽  
Chronological Age ◽  
Maximal Velocity ◽  
Cross Sectional ◽  
Sprint Time ◽  
Youth Soccer ◽  
Sprint Ability

Background. It has been proposed that muscle architecture can be associated with sprint performance and the risk of sustaining a muscle injury. During puberty, sprint performance as well as muscle injury risk increases in young soccer players. In this study, we investigated the changes in m. biceps femoris long head (BFlh) cross-sectional area (ACSA), fascicle length (FL) and pennation angle (PA) and sprint performance as well as their relationship in under 13 to 15 youth soccer players. Methods. In total, we measured 85 youth soccer players in under 13 (n=29, age=12.5 y (SD=0.1), height=155.3 cm (6.2), weight=43.9 kg (7.6)), under 14 (n=25, age=13.5 y (0.3), height=160.6 y (7.7), weight=47.0 kg (6.8)) and under 15 (n=31, age=14.4 y (0.3) , height=170.0 cm (7.7), weight=58.1 kg (8.8) ) teams of three high level soccer clubs. We used ultrasound to measure BFlh ACSA, FL and PA. We performed sprint tests to assess 10m and 30m sprint time, maximal velocity (vmax) and maximal acceleration (amax). We calculated Pearson’s r and 95% compatibility intervals to assess the relationship between sprint ability, maturity ratio, chronological age and architectural parameters. In addition, we calculated the best set of predictors for sprint ability using multiple regression models.Results. All muscle architectural parameters increased from the under 13 to the under 15 age group (BFlh ACSA: 37%, BFlh FL: 11%, BFlh PA: 8%). All sprint performance parameters improved from the under 13 to under 15 age categories (30m time: 7%, 10m time: 4%, vmax: 9%, amax: 7%). BFlh ACSA was correlated with 30m sprint time (r = -0.61 (95% CI = -0.73, -0.45)) and vmax (r= 0.61 (0.45, 0.72)). The correlation for maturity ratio with assessed parameters were larger compared to the correlation for chronological age. A combination of BFlh ACSA, FL, chronological age and height best predicted sprint parameters. Discussion. Parallel to improvements in sprint performance, muscle architectural parame-ters increase from the under 13 to under 15 age groups. BFlh ACSA seems to be related to sprint performance in youth soccer players. BFlh ACSA and chronological age are the main predictors of most sprint parameters.

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.

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.

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