scholarly journals Aceleraciones de alta intensidad en el fútbol. ¿Por qué es importante el método de evaluación? (High-intensity acceleration in soccer. Why is the evaluation method important?)

Retos ◽  
2020 ◽  
pp. 750-754
Author(s):  
Francisco Ignacio Martínez-Cabrera ◽  
Francisco Javier Núñez-Sánchez ◽  
Alejandro Muñoz-López ◽  
Moisés De Hoyo
Keyword(s):  
High Intensity ◽  
Short Distance ◽  
High Speed ◽  
Evaluation Method ◽  
Soccer Players ◽  
Absolute Acceleration ◽  
Post Hoc Analysis ◽  
Maximal Acceleration ◽  
Relative Threshold ◽  
Post Hoc

    El objetivo del presente estudio fue analizar las posibles diferencias entre el uso de diferentes tipos de umbrales para evaluar los esfuerzos de alta intensidad, tanto en número como en distancia recorrida en jóvenes futbolistas de élite. Un total de 26 jóvenes jugadores fueron analizados durante 18 partidos oficiales (n = 108). Los esfuerzos de alta intensidad se evaluaron utilizando un umbral relativo individualizado basado en la capacidad de acelerar a diferentes velocidades iniciales, considerando la aceleración de alta intensidad cuando fue >75% de la capacidad máxima de acelerar (>75% amax). Se utilizó también un umbral >21 km·h-1 cuando la intensidad de la aceleración fue >75% amax, y umbrales absolutos >3 m·s-2 y >4 m·s-2, contabilizando tanto el número como la distancia (metros). El análisis post hoc mostró diferencias significativas por pares entre el uso de umbrales a alta intensidad (p < .05), en número y distancia. Los resultados mostraron que el uso de umbrales absolutos podría sobreestimar (>3 m·s-2) y subestimar (>4 m·s-2 y >21 km·h-1) esfuerzos de aceleración a alta intensidad (tanto en número como en distancia) en comparación con el uso de un umbral relativo individualizado (p < .05). Por lo tanto, concluimos que el uso de umbrales de aceleración absolutos (>3 m·s-2 y >4 m·s-2) puede no ser apropiado para analizar estos esfuerzos de alta intensidad en jóvenes futbolistas. Además, los umbrales de velocidad de carrera podrían subestimar las acciones de alta intensidad desarrolladas en una distancia corta, siendo más apropiados combinarlos con un umbral relativo individual para evaluar las acciones de alta intensidad en partidos de fútbol. Abstract. The aim of the current study was to analyze the possible differences between the use of different kinds of thresholds to assess high-intensity acceleration efforts, both in number and distance covered in young elite soccer players. A total of 26 young soccer players were analyzed during 18 competitive matches (n=108). High-intensity acceleration efforts were assessed using an individual relative threshold based on the capacity of acceleration from different initial speeds, considering high-intensity acceleration when it was >75% of the maximal acceleration (>75% amax). It was also used a threshold >21 km·h-1 when the acceleration intensity was >75% amax, and absolute thresholds of >3 m·s-2 and >4 m·s-2, both in number and distance (meters). Post hoc analysis showed pairwise significant differences between the use of high-intensity thresholds (p < .05), in number and distance. The results showed that the use of absolute thresholds could overestimate (>3 m·s-2) and underestimate (>4 m·s-2 and >21 km·h-1) high-intensity acceleration efforts (both in number and distance) in comparison with the use of an individual relative threshold (p < .05), whereas a threshold based on high-speed running could underestimate high-intensity acceleration efforts (p < .05). Therefore we conclude that the use of absolute acceleration thresholds (>3 m·s-2 and >4 m·s-2) may not be appropriate to analyze these efforts in young soccer players. In addition, speed running thresholds could underestimate high-intensity actions developed in short distance, being more appropriate to combine with an individual relative threshold to assess high-intensity action in soccer matches. 

Regular- and postseason comparisons of playing time and measures of running performance in NCAA Division I women soccer players

2015 ◽  
Vol 40 (9) ◽  
pp. 907-917 ◽  
Author(s):  
Adam J. Wells ◽  
Jay R. Hoffman ◽  
Kyle S. Beyer ◽  
Mattan W. Hoffman ◽  
Adam R. Jajtner ◽  
...  
Keyword(s):  
Ncaa Division I ◽  
High Intensity ◽  
High Speed ◽  
Division I ◽  
Soccer Players ◽  
Running Performance ◽  
Transient Motion ◽  
Absolute Time ◽  
Low Intensity ◽  
Playing Time

The management of playing time in National Collegiate Athletic Association (NCAA) soccer athletes may be a key factor affecting running performance during competition. This study compared playing time and running performance between regular-season and postseason competitions during a competitive women’s soccer season. Nine NCAA Division I women soccer players (age, 21.3 ± 0.9 years; height, 170.3 ± 5.7 cm; body mass, 64.0 ± 5.8 kg) were tracked using portable GPS devices across 21 games during a competitive season (regular season (n = 17); postseason (n = 4)). Movements on the field were divided into operationally distinct thresholds defined as standing/transient motion, walking, jogging, low-speed running, moderate-speed running, high-speed running, sprinting, low-intensity running, and high-intensity running. A significant increase in minutes played (+17%, p = 0.010) was observed at postseason compared with the regular season. Concomitant increases in time spent engaged in low-intensity running (LIR: +18%, p = 0.011), standing/transient motion (+35%, p = 0.004), walking (+17%, p = 0.022), distance covered while walking (+14%, p = 0.036), and at low intensity (+11%, p = 0.048) were observed. Performance comparisons between the first and second half within games revealed a significant decrease (p ≤ 0.05) in high-speed and high-intensity runs during the second half of the postseason compared with the regular season. Changes in minutes played correlated significantly with changes in absolute time spent engaged in LIR (r = 0.999, p < 0.001), standing/transient motion (r = 0.791, p = 0.011), walking (r = 0.975, p = 0.001), jogging (r = 0.733, p = 0.025), distance covered while walking (r = 0.898, p < 0.001) and low-intensity activity (r = 0.945, p < 0.001). Negative correlations were observed between minutes played and absolute time sprinting (r = −0.698, p = 0.037) and distance covered sprinting (r = −0.689, p = 0.040). Results indicate that additional minutes played during the postseason were primarily performed at lower intensity thresholds, suggesting running performance during postseason competitions may be compromised with greater playing time in intercollegiate women’s soccer.

scholarly journals Analysis of the Association between Running Performance and Game Performance Indicators in Professional Soccer Players

2019 ◽  
Vol 16 (20) ◽  
pp. 4032 ◽  
Author(s):  
Modric ◽  
Versic ◽  
Sekulic ◽  
Liposek
Keyword(s):  
Performance Indicators ◽  
High Intensity ◽  
High Speed ◽  
Body Height ◽  
Soccer Players ◽  
Running Performance ◽  
Total Distance ◽  
Professional Soccer ◽  
Performance Statistics ◽  
Game Performance

Running performance (RP) and game performance indicators (GPI) are important determinants of success in soccer (football), but there is an evident lack of knowledge about the possible associations between RP and GPI. This study aimed to identify associations between RP and GPI in professional soccer players and to compare RP and GPI among soccer playing positions. One hundred one match performances were observed over the course of half of a season at the highest level of national competition in Croatia. Players (mean ± SD, age: 23.85 ± 2.88 years; body height: 183.05 ± 8.88 cm; body mass: 78.69 ± 7.17 kg) were classified into five playing positions (central defenders (n = 26), full-backs (n = 24), central midfielders (n = 33), wide midfielders (n = 10), and forwards (n = 8). RP, as measured by global positioning system, included the total distance covered, distance covered in five speed categories (walking, jogging, running, high-speed running, and maximal sprinting), total number of accelerations, number of high-intensity accelerations, total number of decelerations, and number of high-intensity decelerations. The GPI were collected by the position-specific performance statistics index (InStat index). The average total distance was 10,298.4 ± 928.7 m, with central defenders having the shortest and central midfielders having the greatest covered distances. The running (r = 0.419, p = 0.03) and high-intensity accelerations (r = 0.493, p = 0.01) were correlated with the InStat index for central defenders. The number of decelerations of full-backs (r = −0.43, p = 0.04) and the distance covered during sprinting of forwards (r = 0.80, p = 0.02) were associated with their GPI obtained by InStat index. The specific correlations between RP and GPI should be considered during the conditioning process in soccer. The soccer training should follow the specific requirements of the playing positions established herein, which will allow players to meet the game demands and to perform successfully.

Effect of High-Speed and Plyometric Training for 13-Year-Old Male Soccer Players on Acceleration and Agility Performance

2014 ◽  
Vol 5 (2) ◽  
pp. 1-12
Author(s):  
Gunnar Elling Mathisen
Keyword(s):  
High Intensity ◽  
High Speed ◽  
Intervention Program ◽  
Intervention Group ◽  
Training Group ◽  
Soccer Players ◽  
Adolescent Male ◽  
Plyometric Training ◽  
Youth Soccer ◽  
Performance Results

Abstract Acceleration, sprint and agility performance are crucial in sports like soccer. There are few studies regarding the effect of training on youth soccer players in agility performance and in sprint distances shorter than 30 meter. Therefore, the aim of the recent study was to examine the effect of a high-intensity sprint and plyometric training program on 13-year-old male soccer players. A training group of 14 adolescent male soccer players, mean age (±SD) 13.5 years (±0.24) followed an eight week intervention program for one hour per week, and a group of 12 adolescent male soccer players of corresponding age, mean age 13.5 years (±0.23) served as control a group. Pre- and post-tests assessed 10-m linear sprint, 20-m linear sprint and agility performance. Results showed a significant improvement in agility performance, pre 8.23 s (±0.34) to post 7.69 s (± 0.34) (p<0.01), and a significant improvement in 0-20m linear sprint, pre 3.54s (±0.17) to post 3.42s (±0.18) (p<0.05). In 0-10m sprint the participants also showed an improvement, pre 2.02s (±0.11) to post 1.96s (± 0.11), however this was not significant. The correlation between 10-m sprint and agility was r = 0.53 (p<0.01), and between 20-m linear sprint and agility performance, r = 0.67 (p<0.01). The major finding in the study is the significant improvement in agility performance and in 0-20 m linear sprint in the intervention group. These findings suggest that organizing the training sessions with short-burst high-intensity sprint and plyometric exercises interspersed with adequate recovery time, may result in improvements in both agility and in linear sprint performance in adolescent male soccer players. Another finding is the correlation between linear sprint and agility performance, indicating a difference when compared to adults.

WORKLOADS OF YOUNG SOCCER PLAYERS

2018 ◽  
Vol 4 ◽  
pp. 199-210
Author(s):  
Karol Pilis ◽  
Krzysztof Stec ◽  
Zbigniew Witkowski ◽  
Arkadiusz Stanula ◽  
Tomasz Gabrys ◽  
...  
Keyword(s):  
Heart Rate ◽  
Global Positioning System ◽  
The Body ◽  
Soccer Players ◽  
Positioning System ◽  
Warm Up ◽  
Average Speed ◽  
Post Hoc Analysis ◽  
Global Positioning ◽  
Post Hoc

The purpose of this study is to present a comparison of the workload demonstrated by young soccer players during the phases of warm-up (WU), first half (FH) and second half (SH) of a league match. Eleven young Polish soccer players took part in this research, playing a league match after completing the WU. During the WU, FH and SH of the match the following variables were recorded: total distance run, maximal and average speed achieved during the runs, number of sprints, distances run in the different speed zones, durations of increased heart rate (HR) in specific ranges, and the maximal, mean and minimal HR. The variables were recorded by means of the Global Positioning System (GPS). The research showed that there were significant differences between the WU, FH and SH in the total distances run (F=30.107, p<0.001), the average speed achieved during the runs (F=37.731, p<0.001), the distances run at different speeds (p<0.001), the duration of increased HR in specific zones, and HRmean (p=0.002) and HRmin (p<0.001). Post hoc analysis confirmed that, for the majority of the analyzed parameters, the WU provided a smaller load for the body than did the FH or SH, the intensity of which in some part was higher than that encountered at the anaerobic threshold. In conclusion, it has been shown that the WU and the two halves of the match load the body to varying degrees, the former doing so to a lesser extent than FH or SH.

Individualization of Time–Motion Analysis: A Case-Cohort Example

2013 ◽  
Vol 8 (4) ◽  
pp. 456-458 ◽  
Author(s):  
Ric Lovell ◽  
Grant Abt
Keyword(s):  
Motion Analysis ◽  
High Intensity ◽  
High Speed ◽  
Analysis Data ◽  
Soccer Players ◽  
Match Play ◽  
Type Method ◽  
Motion Data ◽  
Time Motion ◽  
External Loads

Purpose:To report the intensity distribution of Premier League soccer players’ external loads during match play, according to recognized physiological thresholds. The authors also present a case in which individualized speed thresholds changed the interpretation of time–motion data.Method:Eight outfield players performed an incremental treadmill test to exhaustion to determine the running speeds associated with their ventilatory thresholds. The running speeds were then used to individualize time–motion data collected in 5 competitive fixtures and compared with commonly applied arbitrary speed zones.Results:Of the total distance covered, 26%, 57%, and 17% were performed at low, moderate, and high intensity, respectively. Individualized time– motion data identified a 41% difference in the high-intensity distance covered between 2 players of the same positional role, whereas the player-independent approach yielded negligible (5–7%) differences in total and high-speed distances covered.Conclusions:The authors recommend that individualized speed thresholds be applied to time–motion-analysis data in synergy with the traditional arbitrary approach.

scholarly journals Physical Activity of the Right- and Left-Footed Professional Soccer Players from Symmetrical Defensive Positions

Symmetry ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1551
Author(s):  
Marek Konefał ◽  
Marcin Andrzejewski ◽  
Paweł Chmura ◽  
Michał Zacharko ◽  
Łukasz Radzimiński
Keyword(s):  
Physical Activity ◽  
Physical Performance ◽  
High Intensity ◽  
High Speed ◽  
Soccer Players ◽  
Total Distance ◽  
Professional Soccer ◽  
Playing Time ◽  
The Right ◽  
Physical Match

The main purpose of this study was to compare the physical match performance of right- and left-footed external defenders during official matches of Polish Ekstraklasa. The sample comprised 991 individual observations from 296 matches during the 2019/2020 season. Variables such as total distance, distance covered in high-speed running and sprinting, and number of high-intensity runs were analysed. Additionally, the data were presented in relation to match duration and effective playing time. Right external defenders (right ED) covered significantly longer total distance (p < 0.001, 1.5%), high-speed running distance (p < 0.001, 5.6%) and sprinting distance (p < 0.001, 11.4%) compared to left external defenders (left ED). The number of high-intensity runs was greater for right RD as well (p < 0.001, 6.4%). Physical match activity for left ED who are left-footed was significantly higher (p < 0.001) in comparison with right-footed left ED. The number of offensive actions played on the right side of the pitch was significantly (p < 0.001) higher than those performed on the left side. Players whose dominant foot is in accordance with the side of the pitch cover longer distances during the match. Moreover, the number of offensive actions played through the wings could affect the physical performance of external defenders.

scholarly journals Holographic Sight Improves the Static Shooting Accuracy and Vertical Sway Precision During High-Intensity Dynamic Action in the Police Task Force

Motor Control ◽  
2021 ◽  
pp. 1-12
Author(s):  
Michal Vágner ◽  
Zdeněk Bílek ◽  
Karel Sýkora ◽  
Vladimír Michalička ◽  
Lubomír Přívětivý ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
High Intensity ◽  
Short Distance ◽  
Task Force ◽  
Dynamic Condition ◽  
Static Condition ◽  
Dynamic Action ◽  
Accuracy And Precision ◽  
Post Hoc

The aim of this study was to find the effect of holographic sight (HS) on short-distance shooting accuracy and precision during static and high-intensity dynamic actions. Twenty policemen (31 ± 2.2 years, 85.6 ± 6.1 kg, and 181.9 ± 4.4 cm) performed five shots in the 10-s limit under the static condition for 20 m and dynamic condition 15–5 m, and after 4 × 10 m sprint action, both with fixed sight (FS) and HS. The analysis of variance post hoc test revealed that HSstatic had higher shouting accuracy than FSstatic, FSdynamic, and HSdynamic (p = .03, p = .0001, and p = .0001, respectively) and FSdynamic had lower precision than FSstatic, HSstatic, and HSdynamic (p = .0003, p = .0001, and p = .01, respectively) in vertical sway. The HS for rifles has improved the accuracy of static shooting and vertical sway precision of dynamic shooting.

scholarly journals Quantification of Seasonal-Long Physical Load in Soccer Players With Different Starting Status From the English Premier League: Implications for Maintaining Squad Physical Fitness

2016 ◽  
Vol 11 (8) ◽  
pp. 1038-1046 ◽  
Author(s):  
Liam Anderson ◽  
Patrick Orme ◽  
Rocco Di Michele ◽  
Graeme L. Close ◽  
Jordan Milsom ◽  
...  
Keyword(s):  
High Intensity ◽  
High Speed ◽  
Total Duration ◽  
Soccer Players ◽  
Physical Work ◽  
Premier League ◽  
Loading Patterns ◽  
Global Positioning ◽  
Work Done ◽  
English Premier League

Purpose:To quantify the accumulative training and match load during an annual season in English Premier League soccer players classified as starters (n = 8, started ≥60% of games), fringe players (n = 7, started 30–60% of games) and nonstarters (n = 4, started <30% of games). MethodsPlayers were monitored during all training sessions and games completed in the 2013–14 season with load quantified using global positioning system and Prozone technology, respectively. Results:When including both training and matches, total duration of activity (10,678 ± 916, 9955 ± 947, 10,136 ± 847 min; P = .50) and distance covered (816.2 ± 92.5, 733.8 ± 99.4, 691.2 ± 71.5 km; P = .16) were not different between starters, fringe players, and nonstarters, respectively. However, starters completed more (all P < .01) distance running at 14.4–19.8 km/h (91.8 ± 16.3 vs 58.0 ± 3.9 km; effect size [ES] = 2.5), high-speed running at 19.9–25.1 km/h (35.0 ± 8.2 vs 18.6 ± 4.3 km; ES = 2.3), and sprinting at >25.2 km/h (11.2 ± 4.2 vs 2.9 ± 1.2 km; ES = 2.3) than nonstarters. In addition, starters also completed more sprinting (P < .01, ES = 2.0) than fringe players, who accumulated 4.5 ± 1.8 km. Such differences in total high-intensity physical work done were reflective of differences in actual game time between playing groups as opposed to differences in high-intensity loading patterns during training sessions. ConclusionsUnlike total seasonal volume of training (ie, total distance and duration), seasonal high-intensity loading patterns are dependent on players’ match starting status, thereby having potential implications for training program design.

scholarly journals Match Running Performance on Three Different Competitive Standards in Norwegian Soccer

2019 ◽  
Vol 03 (03) ◽  
pp. E82-E88 ◽  
Author(s):  
Atle Sæterbakken ◽  
Vebjorn Haug ◽  
Dan Fransson ◽  
Halvard Nikolai Grendstad ◽  
Hilde Stokvold Gundersen ◽  
...  
Keyword(s):  
High Intensity ◽  
High Speed ◽  
Tracking System ◽  
Soccer Players ◽  
Running Speed ◽  
Running Performance ◽  
Professional Soccer ◽  
Fully Automatic ◽  
Level 1 ◽  
Level 2

AbstractThe aim of the study was to compare running performance of three competitive standards and to examine the effects of being promoted to a higher league in Norwegian football. One clubʼs first and second team were included. The first team consisted of professional soccer players playing at Level 2 (2015 season) and Level 1 (2016 season). The second team consisted of amateurs playing at Level 4. A fully automatic tracking system was used to examine running performance, divided into different running-speed categories and playing position. Forty-one matches were included containing 278 observations. Level 1 performed 61 and 51% sprinting compared to Level 2 and Level 4 but similar high-speed running. Similar high-speed running distances were observed only for the different playing positions at Level 1 compared to Level 2 and 4. The sprinting distance was greater for the central defender and attacker, and the number of accelerations was greater for central midfielders and wide midfielders’ playing at Level 1 compared to lower competitive standards. In conclusion, better competitive standards resulted in greater high-intensity actions than lower leagues in Norwegian soccer. Furthermore, only central defenders and attackers increased their high-intensity locomotions when the team was promoted.

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