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.

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.

Physiological Response, Time–Motion Characteristics, and Reproducibility of Various Speed-Endurance Drills in Elite Youth Soccer Players: Small-Sided Games Versus Generic Running

2014 ◽  
Vol 9 (3) ◽  
pp. 471-479 ◽  
Author(s):  
Jack D. Ade ◽  
Jamie A. Harley ◽  
Paul S. Bradley
Keyword(s):  
Heart Rate ◽  
Blood Lactate ◽  
High Intensity ◽  
Heart Rate Response ◽  
Lactate Concentration ◽  
Blood Lactate Concentration ◽  
Soccer Players ◽  
Youth Soccer ◽  
Time Motion ◽  
Motion Characteristics

Purpose:To quantify the physiological responses, time–motion characteristics, and reproducibility of various speed-endurance-production (SEP) and speed-endurance-maintenance (SEM) drills.Methods:Sixteen elite male youth soccer players completed 4 drills: SEP 1 v 1 small-sided game (SSG), SEP running drill, SEM 2 v 2 SSG, and SEM running drill. Heart-rate response, blood lactate concentration, subjective rating of perceived exertion (RPE), and time–motion characteristics were recorded for each drill.Results:The SEP and SEM running drills elicited greater (P < .05) heart-rate responses, blood lactate concentrations, and RPE than the respective SSGs (ES 1.1–1.4 and 1.0–3.2). Players covered less (P < .01) total distance and high-intensity distance in the SEP and SEM SSGs than in the respective running drills (ES 6.0–22.1 and 3.0–18.4). Greater distances (P < .01) were covered in high to maximum acceleration/deceleration bands during the SEP and SEM SSGs than the respective running drills (ES 2.6–4.6 and 2.3–4.8). The SEP SSG and generic running protocols produced greater (P < .05) blood lactate concentrations than the respective SEM protocols (ES 1.2–1.7). Small to moderate test–retest variability was observed for heart-rate response (CV 0.9–1.9%), RPE (CV 2.9–5.7%), and blood lactate concentration (CV 9.9–14.4%); moderate to large test–retest variability was observed for high-intensity-running parameters (CV > 11.3%) and the majority of accelerations/deceleration distances (CV > 9.8%) for each drill.Conclusions:The data demonstrate the potential to tax the anaerobic energy system to different extents using speed-endurance SSGs and that SSGs elicit greater acceleration/deceleration load than generic running drills.

scholarly journals Time-motion characteristics of match-play in elite Polish youth soccer players of various playing positions

2018 ◽  
Vol 10 (3) ◽  
pp. 115-123 ◽  
Author(s):  
Bartosz Dolanski ◽  
Pawel Rompa ◽  
Liu Hongyou ◽  
Karol Wasielewski ◽  
Andrzej Szwarc
Keyword(s):  
Soccer Players ◽  
Match Play ◽  
Youth Soccer ◽  
Time Motion ◽  
Motion Characteristics

scholarly journals Area per player in small-sided games to replicate the external load and estimated physiological match demands in elite soccer players

2020 ◽  
Author(s):  
Andrea Riboli ◽  
Giuseppe Coratella ◽  
Susanna Rampichini ◽  
Emiliano Cé ◽  
Fabio Esposito
Keyword(s):  
Motion Analysis ◽  
Effect Size ◽  
High Intensity ◽  
External Load ◽  
Specific Area ◽  
Soccer Players ◽  
Metabolic Power ◽  
Total Distance ◽  
Time Motion ◽  
Small Side

AbstractThe current study determined the area-per-player during small- or large-sided games with or without goalkeeper that replicates the relative (m·min−1) total distance, high-intensity running distance, sprint distance and metabolic power covered during official matches. Time-motion analysis was performed on twenty-five élite soccer-players during 26 home-matches. A total of 2565 individual samples for SSGs using different pitch sizes and different number of players were collected and classified as SSGs with (SSG-G) or without goalkeeper (SSG-P). A between-position comparison was also performed. The area-per-player needed to replicate the official match demands was largely greater in SSG-G vs SSG-P for total distance [187±53 vs 115±35 m2, effect size (ES): 1.60 95%CI 0.94/2.21], high-intensity running distance [262±72 vs 166±39 m2, ES: 1.66(0.99/2.27)] and metabolic power [177±42 vs 94±40, ES: 1.99(1.31/2.67)], but similar for sprint distance [(316±75 vs 295±99 m2, ES: 0.24(−0.32/0.79)] with direction of larger area-per-player for sprint distance > high-intensity running > total distance ≅ metabolic power for both SSG-G and SSG-P. In SSG-G, forwards required greater area-per-player than central-defenders [ES: 2.96(1.07/4.35)], wide-midfielders [ES: 2.45(0.64/3.78)] and wide-defenders [ES: 3.45(1.13/4.99)]. Central-midfielders required greater area-per-player than central-defenders [ES: 1.69(0.20/2.90)] and wide-midfielders [ES: 1.35(−0.13/2.57)]. In SSG-P, central defenders need smaller area-per-player (ES: −6.01/−0.92) to overall replicate the match demands compared to all other positions. The current results highlight that soccer players need a specific area-per-player during the small-side games with or without goalkeeper to replicate the overall match demands, especially to perform high-intensity running or sprint distance. Additionally, central defenders, central midfielders and forwards need to be trained with tailored area-per-player or specific rules/additional exercises.

scholarly journals Acute Physiological Responses and Time-Motion Characteristics of Two Small-Sided Training Regimes in Youth Soccer Players

2009 ◽  
Vol 23 (1) ◽  
pp. 111-115 ◽  
Author(s):  
Stephen V Hill-Haas ◽  
Greg J Rowsell ◽  
Brian T Dawson ◽  
Aaron J Coutts
Keyword(s):  
Physiological Responses ◽  
Soccer Players ◽  
Youth Soccer ◽  
Time Motion ◽  
Motion Characteristics

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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