scholarly journals Effects of situational variables on the physical activity profiles of elite soccer players in different score line states

2018 ◽  
Vol 28 (12) ◽  
pp. 2515-2526 ◽  
Author(s):  
Athalie J. Redwood-Brown ◽  
Peter G. O'Donoghue ◽  
Alan M. Nevill ◽  
Chris Saward ◽  
Nicholas Dyer ◽  
...  
Keyword(s):  
Physical Activity ◽  
Soccer Players ◽  
Situational Variables ◽  
Score Line

Do elite soccer players cover longer distance when losing? Differences between attackers and defenders

2020 ◽  
pp. 174795412098227
Author(s):  
Carlos Lago-Peñas ◽  
Anton Kalén ◽  
Miguel Lorenzo-Martinez ◽  
Roberto López-Del Campo ◽  
Ricardo Resta ◽  
...  
Keyword(s):  
New York ◽  
High Speed ◽  
Large Scale ◽  
Tracking System ◽  
Soccer Players ◽  
Running Performance ◽  
Situational Variables ◽  
Total Distance ◽  
Professional Soccer ◽  
Score Line

This study aimed to evaluate the effects playing position, match location (home or away), quality of opposition (strong or weak), effective playing time (total time minus stoppages), and score-line on physical match performance in professional soccer players using a large-scale analysis. A total of 10,739 individual match observations of outfield players competing in the Spanish La Liga during the 2018–2019 season were recorded using a computerized tracking system (TRACAB, Chyronhego, New York, USA). The players were classified into five positions (central defenders, players = 94; external defenders, players = 82; central midfielders, players = 101; external midfielders, players = 72; and forwards, players = 67) and the following match running performance categories were considered: total distance covered, low-speed running (LSR) distance (0–14 km · h−1), medium-speed running (MSR) distance (14–21 km · h−1), high-speed running (HSR) distance (>21 km · h−1), very HSR (VHSR) distance (21–24 km · h−1), sprint distance (>24 km · h−1) Overall, match running performance was highly dependent on situational variables, especially the score-line condition (winning, drawing, losing). Moreover, the score-line affected players running performance differently depending on their playing position. Losing status increased the total distance and the distance covered at MSR, HSR, VHSR and Sprint by defenders, while attacking players showed the opposite trend. These findings may help coaches and managers to better understand the effects of situational variables on physical performance in La Liga and could be used to develop a model for predicting the physical activity profile in competition.

scholarly journals Off-training physical activity and training responses as determinants of sleep quality in young soccer players

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nuno Mateus ◽  
Juliana Exel ◽  
Bruno Gonçalves ◽  
Anthony Weldon ◽  
Jaime Sampaio
Keyword(s):  
Physical Activity ◽  
Sleep Quality ◽  
Sleep Onset ◽  
Holistic Approach ◽  
Soccer Players ◽  
Sleep Onset Latency ◽  
Youth Soccer ◽  
Sports Organizations ◽  
Health Related ◽  
And Training

AbstractThis study aimed to quantify and assess the relationship of young soccer players' off-training physical activity (PA) and training responses on sleep quality. Eleven adolescent soccer players (13 ± 0.5 years old) were monitored during weekdays for four consecutive weeks, throughout soccer practice days. Off-training PA and sleep quality were assessed using 100 Hz tri-axial accelerometers and training responses analyzed using 20 Hz global positioning measurement units. A cluster analysis classified all cases into three different dimensions, (1) off-training PA, (2) training responses and (3) sleep quality. For each dimension, the most important variables for classifying the cases into clusters were sedentary PA and moderate-to-vigorous PA; total distance covered and impacts; and sleep onset latency and sleep fragmentation index, respectively. Afterwards, a correspondence analysis was used to identify whether off-training PA and training responses affected sleep quality. Results exposed that high to medium off-training PA combined with medium to high training responses may have decreased sleep quality. Conversely, no correspondence was observed between off-training PA and training responses, with higher sleep quality. This study emphasizes the importance of sports organizations adopting a holistic approach to youth soccer players’ development, that appropriately considers the inter-relationship between lifestyle, performance and health-related information.

scholarly journals Air Pollutants Reduce The Physical Activity Of Professional Soccer Players.

2021 ◽  
Author(s):  
Michał Zacharko ◽  
Robert Cichowicz ◽  
Marcin Andrzejewski ◽  
Paweł Chmura ◽  
Edward Kowalczuk ◽  
...  
Keyword(s):  
Physical Activity ◽  
Air Pollution ◽  
Air Quality ◽  
Air Pollutants ◽  
Well Being ◽  
Soccer Players ◽  
Professional Soccer ◽  
Considerable Problem ◽  
The Impact ◽  
Sporting Performance

Abstract The aim of the study was to determine the impact of air quality – analyzed on the basis of the model of integrating three types of air pollutants (ozone – O3, particulate matter - PM, nitrogen dioxide – NO2) – on the physical activity of soccer players. Study material consisted of 8927 individual match observations of 461 players competing in the German Bundesliga during the 2017/2018 and 2018/2019 domestic seasons. The measured indices included players’ physical activities: total distance (TD) and high intensity effort (HIE). Statistical analysis showed that with increasing levels of air pollution, both TD (F = 13.900(3); p = 0.001) and HIE (F = 8.060(3); p = 0.001) decrease significantly. The worsening of just one parameter of air pollution results in a significant reduction in performance. This is important information as air pollution is currently a considerable problem for many countries. Improving air quality during training sessions and sports competitions will result in better well-being and sporting performance of athletes, and will also help protect athletes from negative health effects caused by air pollution.

Effects of Domestic Air Travel on Technical and Tactical Performance and Recovery in Soccer

2014 ◽  
Vol 9 (3) ◽  
pp. 378-386 ◽  
Author(s):  
Peter Fowler ◽  
Rob Duffield ◽  
Joanna Vaile
Keyword(s):  
Performance Indicators ◽  
Study Data ◽  
Air Travel ◽  
Soccer Players ◽  
Psychological State ◽  
Sleep Quantity ◽  
Situational Variables ◽  
Before And After ◽  
Individual Player ◽  
Australian Football

The current study examined the effects of short-haul air travel on competition performance and subsequent recovery. Six male professional Australian football (soccer) players were recruited to participate in the study. Data were collected from 12 matches, which included 6 home and away matches against the same 4 teams. Together with the outcome of each match, data were obtained for team technical and tactical performance indicators and individual player-movement patterns. Furthermore, sleep quantity and quality, hydration, and perceptual fatigue were measured 2 days before, the day of, and 2 days after each match. More competition points were accumulated (P > .05, d = 1.10) and fewer goals were conceded (P > .05, d = 0.93) in home than in away matches. Furthermore, more shots on goal (P > .05, d = 1.17) and corners (P > .05, d = 1.45) and fewer opposition shots on goal (P > .05, d = 1.18) and corners (P < .05, d = 2.32) occurred, alongside reduced total distance covered (P > .05, d = 1.19) and low-intensity activity (P < .05, d = 2.25) during home than during away matches. However, while oxygen saturation was significantly lower during than before and after outbound and return travel (P < .01), equivocal differences in sleep quantity and quality, hydration, and perceptual fatigue were observed before and after competition away compared with home. These results suggest that, compared with short-haul air travel, factors including situational variables, territoriality, tactics, and athlete psychological state are more important in determining match outcome. Furthermore, despite the potential for disrupted recovery patterns, return travel did not impede player recovery or perceived readiness to train.

scholarly journals The Effect of Contextual Variables on Match Performance across Different Playing Positions in Professional Portuguese Soccer Players

2021 ◽  
Vol 18 (10) ◽  
pp. 5175
Author(s):  
Joel Barrera ◽  
Hugo Sarmento ◽  
Filipe Manuel Clemente ◽  
Adam Field ◽  
António J. Figueiredo
Keyword(s):  
Physical Performance ◽  
High Speed ◽  
Satellite System ◽  
Soccer Players ◽  
Physical Demands ◽  
Situational Variables ◽  
All Speeds ◽  
Global Navigation Satellite ◽  
Walking Speeds ◽  
Very High

This study investigated the position-specific physical demands of professional Portuguese players. The effects of situational variables on the physical performance demands were also analysed (match location, match half and match result). Match performance observations were collected using Global Navigation Satellite System devices across 11 matches during a competitive season (2019–2020). Data were analysed according to five playing positions: goalkeepers (n = 11), central defenders (n = 42), wide defenders (n = 31), central midfielders (n = 34), open attackers (n = 28), and centre forwards (n = 14). Central midfield players completed the greatest total distance (10,787 ± 1536 m), while central defenders covered the least distance (9272 ± 455; p < 0.001). Open attackers covered the greatest high and very-high-speed distance (1504 ± 363 m), number of high-speed decelerations per match (11 ± 4) and were the fastest players (30.6 ± 1.5 km/h), along with center forwards (30.6 ± 2.0 km/h), versus all other positions (p < 0.05). Greater distances were performed in teams that were winning (9978 ± 1963 m) or drawing (10,395 ± 875 m) versus losing (9415 ± 2050) p = 0.036 and p = 0.006, respectively. Increases in distance covered at walking speeds were observed during the 2nd half (1574 ± 179 m) compared with the 1st half (1483 ± 176; (p < 0.003). A higher number of decelerations across all speeds were performed in the 1st half (144 ± 39) versus the 2nd half (135 ± 37). The distance covered in home matches (10,206 ± 1926 m) far exceeded away matches (9471 ± 1932 m; p < 0.001). The number of faster accelerations were higher in away (7 ± 5) versus home matches (6 ± 4; p < 0.049). The data demonstrate the different physical demands of each playing position and suggest that situational variables influence physical performance. These findings suggest position-specific physical training is required to condition players for the bespoke demands of each playing position.

Aerobic capacity as a protective factor for hypertension in Bogota’s soccer players

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
J Ramírez ◽  
A Gálvez ◽  
Y Arguello ◽  
L Castro
Keyword(s):  
Physical Activity ◽  
Blood Pressure ◽  
Aerobic Capacity ◽  
Protective Factor ◽  
Soccer Players ◽  
Vo2 Max ◽  
Cross Sectional ◽  
Blood Pressure Data ◽  
The Relationship ◽  
The City

Abstract Background In Colombia between 1998-2011 the 23.5% of deaths that were reported were from CardioVascular Disease (CVD), 12.4% were caused by hypertensive disease; well now physical activity has been reported as a protective factor for CVD and Hypertension (HT), those people who perform high levels of physical activity have a relative decrease in developing HT by 19%, however what happens when this physical activity takes place with a duration greater than 4 hours a day, with moderate and high intensities, becoming a sports practice, the same benefits or opposite effects would be had, so the objective of the study was to determine the relationship between aerobic capacity and blood pressure in soccer players in the city of Bogotá. Methods Quantitative cross-sectional research; blood pressure of 64 players and the aerobic capacity was assessed using the Legger test (VO2 Max). Results It was evidenced that 4.6% of the players have hypotension, 50.8% normotension, 30.8% prehypertension and 12.3% stage I hypertension; As regards for VO2 max, 7.7% had an excellent capacity, 73.8% good and 12.3% favorable, there was no relationship between the variables. Conclusions Soccer players, although they have good levels of VO2 max, they do not present a decrease in blood pressure data, being mostly within a normal range. Key messages Although physical activity is a protective factor for HT. Soccer training does not show a decrease in blood pressure, possibly could be a risk factor for HT and CVD.

scholarly journals Prior Injury, Health-Related Quality of Life, Disablement, and Physical Activity in Former Women's Soccer Players

2021 ◽  
Author(s):  
Shannon J. Cross ◽  
Diane L. Gill ◽  
Pam Kocher Brown ◽  
Erin J. Reifsteck
Keyword(s):  
Physical Activity ◽  
Sports Injury ◽  
Division I ◽  
Soccer Players ◽  
Severe Injury ◽  
Patient Reported ◽  
Related Quality ◽  
Health Related ◽  
History Of ◽  
Women's Soccer

Context: Former collegiate athletes may be at risk for negative health outcomes like lower health-related quality of life (HRQoL), higher disablement, and lower lifetime physical activity (PA) participation. A history of severe sports injury may play a role in these outcomes. Objective: To assess the role prior sports injury plays in self-reported HRQoL, levels of disablement, and PA behaviors of former Division I women's soccer players. Design: Cross-sectional study. Setting: Online Survey. Participants: Former NCAA Division I women's soccer players (n = 382, Mage = 36.41 ± 7.76) completed demographics, injury history, the Patient-Reported Outcomes Measurement Information System (PROMIS; HRQoL), the Disablement for the Physically Active Scale (DPA; disablement), and the Godin Leisure Time Physical Activity Questionnaire (PA). Main Outcome Measures: The dependent variables were physical and mental component summary scores for HRQoL and disablement, and frequency of moderate-to-vigorous PA. Means, standard deviations, and correlations among the main outcome variables were examined for those who reported a severe injury (n = 261) and those who did not (n = 121). To address the primary aim of the study, multiple regression analyses were used to predict PA, disablement, and HRQoL based on history of severe injury, accounting for age. Results: Having a severe injury was significantly predictive of having worse physical disablement and worse physical HRQoL, with severe injury predicting a greater than 5-point increase and 2-point decrease on the respective scales. Injury status was not predictive of mental disablement, mental HRQoL, or PA. Conclusions: The majority of participants reported suffering a prior severe soccer-related injury, which may have a negative long-term impact on health outcomes for former women's soccer players. Athletic trainers should be aware of risk for decreased HRQoL and increased disablement with injury and encourage continued monitoring of relevant patient-reported outcomes (PROs).

scholarly journals Air Pollutants Reduce the Physical Activity of Professional Soccer Players

2021 ◽  
Vol 18 (24) ◽  
pp. 12928
Author(s):  
Michał Zacharko ◽  
Robert Cichowicz ◽  
Marcin Andrzejewski ◽  
Paweł Chmura ◽  
Edward Kowalczuk ◽  
...  
Keyword(s):  
Physical Activity ◽  
Air Pollution ◽  
Air Quality ◽  
Air Pollutants ◽  
Well Being ◽  
Soccer Players ◽  
Professional Soccer ◽  
Considerable Problem ◽  
The Impact ◽  
Sporting Performance

The aim of the study was to determine the impact of air quality—analyzed on the basis of the model of integrating three types of air pollutants (ozone, O3; particulate matter, PM; nitrogen dioxide, NO2)—on the physical activity of soccer players. Study material consisted of 8927 individual match observations of 461 players competing in the German Bundesliga during the 2017/2018 and 2018/2019 domestic seasons. The measured indices included players’ physical activities: total distance (TD) and high-intensity effort (HIE). Statistical analysis showed that with increasing levels of air pollution, both TD (F = 13.900(3); p = 0.001) and HIE (F = 8.060(3); p = 0.001) decrease significantly. The worsening of just one parameter of air pollution results in a significant reduction in performance. This is important information as air pollution is currently a considerable problem for many countries. Improving air quality during training sessions and sports competitions will result in better well-being and sporting performance of athletes and will also help protect athletes from negative health effects caused by air pollution.

scholarly journals Is there meaningful influence from situational and environmental factors on the physical and technical activity of elite football players? Evidence from the data of 5 consecutive seasons of the German Bundesliga

PLoS ONE ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. e0247771
Author(s):  
Paweł Chmura ◽  
Hongyou Liu ◽  
Marcin Andrzejewski ◽  
Jan Chmura ◽  
Edward Kowalczuk ◽  
...  
Keyword(s):  
Physical Activity ◽  
Environmental Factors ◽  
Environmental Variables ◽  
Weather Condition ◽  
Football Players ◽  
Technical Performance ◽  
Situational Variables ◽  
Number Of Passes ◽  
And Training ◽  
Match Location

The study aimed to identify the effects of situational (match location, match outcome and strength of team/opponent team) and environmental (ambient temperature, relative humidity, WBGT, ground and weather condition) factors on the physical and technical activity of elite football on individual playing positions. Physical and technical activity were collected from 779 football players competing in the German Bundesliga during 5 domestic seasons, from 2014/2015 to 2018/2019, totalling 1530 matches. The data on players’ physical and technical activity was taken from the IMPIRE AG system. Based on the available data, 11 variables were selected to quantify the match activity profiles of players. The results showed that situational variables had major effects on the technical performance (especially number of passes performed) but minor effects on physical performance. In turn, among the analysed environmental factors, temperature is the most sensitive, which affects the Total Distance and Sprint Efforts of players in all five positions. This investigation demonstrated that, given that passing is a key technical activity in modern football, players and training staff should be particularly aware that passing maybe affected by situational variables. Professional players are able to react and adapt to various environmental conditions, modifying physical activity depending on the needs in German Bundesliga. These results could help coaches and analysts to better understand the influences of situational and environmental variables on individual playing positions during the evaluation of players’ physical and technical performance.

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