Special topics

Special topics

Thu

19

May

2022

Analysis of the Effect of Injuries on Match Performance Variables in Professional Footballers: A Retrospective, Longitudinal Design

This study aimed to analyze the changes in match performance parameters in professional soccer players after sustaining an injury, which was defined according to injury severity.

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Tue

17

May

2022

Recovery following the extra-time period of soccer: Practitioner perspectives and applied practices

Recovery following the extra-time period of soccer: Practitioner perspectives and applied practices.

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Mon

16

May

2022

Accumulative weekly load in a professional football team: with special reference to match playing time and game position

The aim of this study was to compare weekly accumulative load during the in-season competitive period by professional soccer players according to the amount of time played in official matches (90-min, >60-min, <60-min, and 0-min) regarding the players’ position.

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Fri

13

May

2022

How does curve sprint evolve across age categories in soccer players?

The aim was to determine the age-related effects on curve sprint (CS) performance to both sides, asymmetry, and association with linear sprint (LS).

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Wed

11

May

2022

10-min warm-up in hot climate assists thermal comfort, power output, and fatigue, during soccer-specific repeated-sprint ability

The study investigated the effect of two warm-up (WU) durations (i.e.10 min: WU10 and 20 min: WU20) in a hot climate (~31 C), on thermal comfort, power output and fatigue after a repeated-sprint test (RSA) in footballers.

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Mon

09

May

2022

Effect of alterations in whole-body cryotherapy exposure on post-match recovery markers in elite Premier League soccer players

The aim of this study was to investigate the impact of different levels of whole-body cryotherapy (WBC) exposure on subjective and objective measures of post-match recovery in footballers during a chronic exposure period.

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Mon

09

May

2022

Clubs that value their own (and/or who (have to) trust their own educational/developmental system)

I have posted some numbers regarding possible cost/benefit of "Having an academy" previously, which was about the possible revenue from academy players.

 

This post is about clubs actually utilizing their own players and to what extent.

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Wed

04

May

2022

Variations in the physical demands and technical performance of professional soccer teams over three consecutive seasons

The purpose of this study was twofold: (i) to analyze the seasonal variations in the physical demands of Turkish Super League teams considering their status in the final rankings and (ii) to analyze the seasonal variations in the technical performance of Turkish Super League teams considering their status in the final rankings.

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Wed

04

May

2022

Sprint Performance and Mechanical Force-Velocity Profile among Different Maturational Stages in Young Soccer Players

The aim of the present study was to determine the influence of maturation status on the components of the sprint force-velocity (F-V) profile in young soccer players.

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Mon

02

May

2022

Training load responses to football game profile-based training formats: effects of locomotive demands manipulation

The aim of this study was to compare internal and external load profiles of different game profile based training (GPBT) formats among elite young football players.

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Fri

29

Apr

2022

Accumulative weekly load in a professional football team: with special reference to match playing time and game position

The aim of this study was to compare weekly accumulative load during the in-season competitive period by professional soccer players according to the amount of time played in official matches (90-min, >60-min, <60-min, and 0-min) regarding the players’ position.

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Wed

27

Apr

2022

The diagonal positioning of the goals modifies the external training load and the tactical behaviour of young football players

The aim of this study was to identify how positioning the goals in diagonal configurations on the pitch modifies the external training load and the tactical behaviour of young football players during small-sided games (SSG).

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Tue

26

Apr

2022

Effects of Whole-Season Training and Match-Play on Hip Adductor and Abductor Muscle Strength in Soccer Players: A Pilot Study

No investigation has examined the influence of soccer training and match-play during the season on isometric hip adductor and abductor muscle strength. The authors hypothesised that maximal hip adductor and abductor muscle strength would increase after the preseason, maintain relatively constant levels across the season.

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Fri

22

Apr

2022

Comparison of Immediate Effects of Foam Rolling on Flexibility, Balance, and Agility in Male Soccer Players

The aim was to evaluate and compare the acute effects of DS as well as DS followed by FR (DS + FR) on flexibility, dynamic balance, and agility in male soccer players.

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Thu

21

Apr

2022

Effect of bio-banding on physiological and technical-tactical key performance indicators in youth elite soccer

Effect of bio-banding on physiological and technical-tactical key performance indicators in youth elite soccer.

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Tue

19

Apr

2022

Fascial therapy, strength exercises and taping in soccer players with recurrent ankle sprains: A randomized controlled trial

The aim was to evaluate the effectiveness of a fascial therapy and strength training, combined with kinesio taping, in improving ankle range of motion, pain, strength and stability in footballers with recurrent sprains.

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Sat

16

Apr

2022

Screening Youth Soccer Players by Means of Cognitive Function and Agility Testing

The aims of this study was to investigate a valid and simple method of testing for a unique combination of cognitive and speed abilities for identifying promising soccer players at mid-childhood.

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Tue

12

Apr

2022

Acute Effects of Foam Rolling on Blood Flow Measured by Ultrasonography in Soccer Players

Foam rolling (FR) has become a popular device for recovery to increase range of motion and decrease pain after sport practice and competition. The aim of this study was to analyze acute effects of FR on blood flow parameters (maximal velocity MVel, maximal volume MVol) measured by ultrasonography in footballers.

 

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Sat

09

Apr

2022

Association between offensive and defensive playing style variables and ranking position in a national football league

Association between offensive and defensive playing style variables and ranking position in a national football league.

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Fri

08

Apr

2022

Perceived load, fatigue and recovery responses during congested and non-congested micro-cycles in international football tournaments

The aims of the study were to describe the perceived load, fatigue and recovery profiles during congested and non-congested schedules in international football tournaments.

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Tue

05

Apr

2022

Quantifying volume and high-speed technical actions of professional soccer players using foot-mounted inertial measurement units

The aims of the study were two-fold: i) examine the validity and reliability of high-speed kicking actions using foot-mounted inertial measurement unit’s (IMU), ii) quantify soccer players within-microcycle and inter-positional differences in both the frequency and speed of technical actions.

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Mon

04

Apr

2022

Youth-to-Senior Transition in Elite European Club Soccer

The aim of this study was to assess the effectiveness of this direct youth-to-senior pathway by examining the extent to which club-trained players (CTPs) are currently involved in elite male European soccer.

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Fri

01

Apr

2022

The relationship between running distance and coaches’ perception of team performance in professional soccer during multiple seasons

This study analyzed how the physical movement profile of soccer matches evolved throughout a season by assessing the variability of different metrics depending on the season phase. In addition, the evolution of running distances was investigated in the relation to the team performance based on the coaches’ perception.

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Thu

31

Mar

2022

The New Generation of Professional Soccer Talent Is Born under the Bias of the RAE: RAE in International Male Youth Championships

In 2019, numerous championships of youth categories soccer national teams were held. The aim was to analyzed the existence of the Relative Age Effect (RAE) in four major male championships that.

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Tue

29

Mar

2022

The “Hockey” Assist Makes the Difference - Validation of a Defensive Disruptiveness Model to Evaluate Passing Sequences in Elite Soccer

The aim of this study is to validate a performance indicator, namely D-Def, measuring passing effectiveness.

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Fri

25

Mar

2022

Adherence to an Injury Prevention Warm-Up Program in Children’s Soccer - A Secondary Analysis of a Randomized Controlled Trial

This study examined the impact of high adherence to a neuromuscular training (NMT) warm-up on the risk of lower extremity (LE) injuries in children’s soccer.

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Thu

24

Mar

2022

The Influence of the Coach’s Autonomy Support and Controlling Behaviours on Motivation and Sport Commitment of Youth Footballers

The aim of this cross-sectional study was to analyse the influence of young soccer players’ perception of their coach’s autonomy-supportive and controlling behaviours on the satisfaction and frustration of their basic psychological needs (BPN) and sport commitment.

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Tue

22

Mar

2022

Maturity Has a Greater Association than Relative Age with Physical Performance in English Male Academy Soccer Players

This study aimed to: 1) examine differences in physical performance across birth-quartiles and maturity-status, and 2) determine the relationships among relative age, maturation and performance in young footballers.

 

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Mon

21

Mar

2022

Short-term effects of on-field combined core strength and small-sided games training on physical performance in soccer players

This study aimed to compare the effects of 6-weeks combined core strength and small-sided games training (SSGcore) vs. small-sided games (SSG) training on the physical performance of young soccer players.

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Mon

14

Mar

2022

Impact of elite soccer coaching change on team performance according to coach- and club-related variables

The aim of the current study was: (i) to compare team’s performance when coached by new and old coaches; (ii) to investigate the impact of a coaching change on performance according to coach- and club-related factors.

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Fri

11

Mar

2022

Fitness improvements of footballers after high volume or small sided games interventions

The main goal was to determine anaerobic and aerobic improvement of young soccer players after six-week high volume (HVT) or small sided games (SSG) training intervention.

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Wed

09

Mar

2022

Influence of contextual factors on physical demands and technical‑tactical actions regarding position in professional footballers

The aim of this study was to analyse the physical demands and technical-tactical actions for each playing position according to game location and final outcome in professional soccer players.

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Thu

03

Mar

2022

The Potentiating Response to Accentuated Eccentric Loading in Professional Football Players

The purpose of this study was to assess the acute effect of Accentuated Eccentric Loading (AEL) on countermovement jump height (CMJH), peak power output (PPO) and peak velocity in male professional footballers using loads of 20% or 40% of body mass (AEL20 or AEL40, respectively).

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Tue

01

Mar

2022

Factors Associated with Hip and Groin Pain in Elite Youth Football Players: A Cohort Study

The aims of this study were to identify whether preseason hip adductor and abductor strength and HAGOS subscale scores of male and female elite youth football players are associated with in-season or historical (lifetime) hip and groin pain.

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Mon

28

Feb

2022

Blood Biomarkers Variations across the Pre-Season and Interactions with Training Load: A Study in Professional Soccer Players

The aim of this study was to analyze the blood measures changes and their relationships with training loads changes after pre-season training.

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Thu

24

Feb

2022

In-Season Internal Load and Wellness Variations in Professional Women Soccer Players: Comparisons between Positions and Status

The aims of this study were threefold: (a) to describe the weekly variations of training monotony (TrMon), training strain and acute: chronic workload ratio ((ACWR) through session Rated Perceived Exertion (s-RPE); (b) to describe weekly variations of Hooper Index [stress, fatigue, Delayed Onset Muscle Soreness (DOMS) and sleep]; and (c) to compare those variations between playing positions and player status.

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Wed

23

Feb

2022

Exploration of the Age-Category Soccer Performance Effects During Ball Possession Small-Sided Games

The aim of this investigation was to explore the age-category effects on external training workloads, internal training load metrics and tactical individual actions during 4 vs. 4 ball possession small-sided game (SSG) constrained within three different playing areas.

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Mon

21

Feb

2022

Exploration of the Age-Category Soccer Performance Effects During Ball Possession Small-Sided Games

The aim of this investigation was to explore the age-category effects on external training workloads, internal training load metrics and tactical individual actions during 4 vs. 4 ball possession small-sided game (SSG) constrained within three different playing areas.

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Fri

18

Feb

2022

Antioxidants Markers of Professional Soccer Players During the Season and their Relationship with Competitive Performance

The aim of this study was to assess antioxidant markers before and after a mid-season of professional soccer players from the 3rd Spanish Division, and to correlate antioxidant markers with competitive performance.

 

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Wed

16

Feb

2022

Is the Integration of Additional Eccentric, Balance and Core Muscles Training Effective in Improving Strength and Postural Stability?

The purpose of this study was to investigate whether the incorporation of a brief and supplementary training program that involves eccentric, balance, and core exercises into the weekly soccer schedule can cause positive neuromuscular adaptations.

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Mon

14

Feb

2022

The relationships between knee extensors/flexors strength and balance control in elite male soccer players

This study's aim was to determine the relationship between lower-limb muscle strength and balance control in elite male soccer players.

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Thu

10

Feb

2022

The Differentiate Effects of Resistance Training With or Without External Load on Performance and Body Composition

The purpose of this study was to examine the effects of 15 weeks (2/week) of two different resistance training (RT) programs [the self-load group (SG) vs. the overload group (OG)] on selected measures of physical performance in young male soccer players.

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Wed

09

Feb

2022

Long-standing pubic-related groin pain in professional academy soccer players: possible risk factors, rehabilitation and return to play

The current study aims to evaluate potential risk-factors, propose a criteria-based conservative rehabilitation protocol and assess return-to-play outcomes among professional youth soccer players suffering from long-standing (> 6 weeks) pubic-related groin pain (LSPRGP).

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Mon

07

Feb

2022

Age-Related Differences in Hamstring Flexibility in Prepubertal Soccer Players: An Exploratory Cross-Sectional Study

This study aimed to investigate the hamstring flexibility rate among prepubertal soccer players from U8 to U12 and the role of age and soccer years of practice on the course of hamstring flexibility.

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Fri

04

Feb

2022

Seasonal Changes and Relationships in Training Loads, Neuromuscular Performance, and Recovery in Competitive Female Soccer Players

The purpose of this study was to examine seasonal changes in training load (TL), neuromuscular performance, subjective recovery, and stress state (SS), and to investigate the relationships between acute (ATL) and chronic (CTL) and neuromuscular performance in competitive female soccer players.

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Tue

01

Feb

2022

Relationship Between Explosive Strength Capacity of the Knee Muscles and Deceleration Performance in Female Professional Soccer Players

The aim was to investigate the relationship between linear deceleration performance and explosive strength capacity of the knee muscles in professional female soccer players.

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Tue

01

Feb

2022

The Influence of Time Winning and Time Losing on Position-Specific Match Physical Demands in Spanish Football

The Influence of Time Winning and Time Losing on Position-Specific Match Physical Demands in Spanish Football.

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Fri

28

Jan

2022

Relative Training Load and Match Outcome: Are Professional Soccer Players Actually Undertrained during the In-Season?

This study aimed to investigate the possible influence of RTL on final match outcome in soccer (win, draw, and loss).

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Thu

27

Jan

2022

Impact of Possession and Player Position on Physical and Technical-Tactical Performance Indicators in Football

The purpose was to investigate the impact of high (HPBPT) and low percentage ball possession teams (LPBPT) on physical and technical-tactical performance indicators in the Chinese Football Super League (CSL).

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Mon

24

Jan

2022

In‑season monotony, strain and workload of perceived exertion, GPS running based variables between positions of an elite football team

The aim of this study was to describe the in-season variations of training monotony, training strain, and acute:chronic workload ratio (ACWR) through session rating of perceived exertion (s-RPE), total distance (TD) and high-speed running (HSR) according to playing positions in an elite soccer team.

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Mon

24

Jan

2022

Pitch Configurations Constrain Tactics and the Creation of Goal Scoring Opportunities during Small Sided Games in Youth Soccer Players

Pitch Configurations Constrain Tactics and the Creation of Goal Scoring Opportunities during Small Sided Games in Youth Soccer Players.

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Sat

22

Jan

2022

UEFA Champions League Pre-Match Warm-Up of Wolfsburg FC

Below is a video of the UEFA Champions League Pre-Match Warm-up of Wolfsburg FC before their game against Sevilla FC in 2021.

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Fri

21

Jan

2022

Sprint Variables Are Associated with the Odds Ratios of Non-Contact Injuries in Professional Soccer Players

Evidence has emerged that a high volume of sprinting during training is associated with an increased risk of non-contact injuries in professional footballers. Training load has been reported as a modifiable risk factor for successive injury in football.

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Thu

20

Jan

2022

Influence of 2D:4D ratio on fitness parameters and accumulated training load in elite youth footballer

The purpose of the study was : (1) to analyze the influence of anthropometric and 2D:4D ratio on variations of accumulated training load (ATL) and fitness parameters: maximal oxygen uptake (V̇O2max), countermovement jump (CMJ), isometric muscular strength of quadriceps (ISQ) and hamstring (ISH); along three stages of evaluation of footballers based on playing positions; (2) to analyze the correlations between 2D:4D ratio and mentioned parameters; and (3) to investigate if variance in fitness levels and ATL can explain the 2D:4D ratio.

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Tue

18

Jan

2022

Associations between Physical Status and Training Load in Women Soccer Players

This study aimed to analyze the variations of fitness status, as well as test the relationships between accumulated training load and fitness changes in women soccer players.

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Mon

17

Jan

2022

Effects of a Specific Core Stability Program on the Sprint and Change-of-Direction Performance in Footballers

The objective of this study was to analyze the effects of the level of specificity of a CORE stability program on specific football actions.

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Thu

13

Jan

2022

Influence of the Area per Player in Non-Professional Footballers: A Pilot Study Focused on Positional Roles

This study analyses the influence of different area per player on the average metabolic power (MP) and other soccer-related performance variables in relation to the positional roles.

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Wed

12

Jan

2022

Running Performance of Footballers Induces Muscle Damage and Fatigue Up to 24 h Postgame

This study aimed to determine the impact of a soccer game on the creatine kinase (Ck) response and recovery and the specific Global Positioning System (GPS)-accelerometry-derived performance analysis during matches and comparing playing positions.

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Sat

08

Jan

2022

The Effect of High-Intensity Accelerations and Decelerations on Match Outcome of an Elite English League Two Football Team

The aim of the present study was to identify the influence of high-intensity accelerations (ACC) and decelerations (DEC) on match performance outcomes (i.e., win, draw, lost).

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Fri

07

Jan

2022

Intra- and Inter-Limb Strength Asymmetry in Soccer: A Comparison of Professional and Under-18 Players

The present study examined the isokinetic peak torque exerted by both knee extensors and flexors, anterior–posterior imbalance and the magnitude and direction of inter-limb asymmetry in professional and academy soccer players.

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Wed

05

Jan

2022

Reduced Injury Prevalence in Footballers Following GPS Guided Acclimatization

This article reports the utility of GPS technology to help develop and monitor incremental increases in training load while transitioning from off-season to in season to reduce musculoskeletal injury.

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Tue

04

Jan

2022

The Effects of Exercise Difficulty and Time-of-Day on the Perception of the Task and Soccer Performance in Child Soccer Players

Players who are able to kick more accurately under various difficulties, i.e. time pressure, shooting distance, have advantages. The aim of the present study was to investigate the effect of exercise difficulty and time-of-day on perceived task difficulty and kicking performance.

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Fri

31

Dec

2021

Association Between Endocrine Markers, Accumulated Workload, and Fitness Parameters During a Season in Elite Young Soccer Players

The purpose of this study was to analyze differences between endocrine markers with accumulated training workload training and fitness parameters during early-, mid- and end-seasons.

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Wed

29

Dec

2021

Effects of ketogenic diet on body composition, strength, muscle area, metabolism and performance in semi-professional soccer players

Effects of ketogenic diet on body composition, strength, muscle area, metabolism and performance in semi-professional soccer players.

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Tue

21

Dec

2021

Load Monitoring Practice in Elite Women Association Football

The description of current load monitoring practices may serve to highlight developmental needs for both the training ground, academia and related industries. Therefore, this study aims to provide a first overview of the current load monitoring practices in elite women’s football.

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Mon

20

Dec

2021

Higher risk of ACL rupture in amateur football compared to professional football

Anterior cruciate ligament (ACL) injuries are a common severe type of football injury at all levels of play. A football-specific ACL registry providing both prospective ACL injury data according to the skill level and risk factors for vACL injury is lacking in the literature.

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Fri

10

Dec

2021

Differences in worst-case scenarios calculated by fixed length and rolling average methods in professional soccer match-play

Differences in worst-case scenarios calculated by fixed length and rolling average methods in professional soccer match-play.

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Thu

09

Dec

2021

The dominant leg is more likely to get injured in soccer players

The purpose of this systematic review with meta-analysis is to examine the relationship between limb dominance and soccer injuries.

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Wed

01

Dec

2021

Distance Between Players During a Soccer Match: The Influence of Player Position

We analyse the proximity between professional players during a soccer match. Specifically, we are concerned about the time a player remains at a distance to a rival that is closer than 2m, which has a series of consequences, from the risk of contagion during a soccer match to the understanding of the tactical performance of players during the attacking/defensive phases.

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Tue

30

Nov

2021

Predictive Strength of Contextual and Personal Variables in Soccer Players’ Goal Orientations

This study aimed to examine the relationships among a set of psychological variables (perceived motivational climate, goal orientation, self-determined motivation and personality) in male and female footballers.

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Thu

25

Nov

2021

Win, Draw, or Lose? GPS-Based Variables’ Effect on the Match Outcome: A Full-Season Study on an Iranian Professional Soccer Team

The aim of the study was to determine the between-match and between-halves match variability of various Global Positioning System (GPS) variables and metabolic power average (MPA) in competitions, based on the match results obtained by professional soccer players over a full season.

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Tue

23

Nov

2021

Match-related physical performance in professional soccer: Position or player specific?

The purpose of this study was to examine to what extent the physical match performance of professional soccer players is both position and player specific.

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Wed

27

Oct

2021

Effects of Match Location, Opposition and Match Outcome on Running Performance in a Portuguese Professional Football Team

The aim of this study was to analyze the effects of match location, quality of opposition and match outcome on match running performance according to playing position in a Portuguese professional football team.

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Tue

26

Oct

2021

Quantifying Accelerations and Decelerations in Elite Women Soccer Players during Regular In-Season Training as a Training Load Index

Accelerations (ACC) and decelerations (DEC) are important actions in soccer. We aimed to investigate whether ACC and DEC were good indicators of the variation of training loads. Changes in the training load were monitored during two different selected weeks (considered a “low week” and a “heavy week”) during the in-season.

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Thu

21

Oct

2021

The Influence of the Coach’s Autonomy Support and Controlling Behaviours on Motivation and Sport Commitment of Youth Footballers

The aim of this cross-sectional study was to analyse the influence of young soccer players’ perception of their coach’s autonomy-supportive and controlling behaviours on the satisfaction and frustration of their basic psychological needs (BPN) and sport commitment.

Read More

Wed

20

Oct

2021

The Role of Parental Involvement in Youth Sport Experience: Perceived and Desired Behaviour by Male Soccer Players

The aims of this cross-sectional study were to assess the perceived and desired parental involvement by children and to examine their satisfaction or dissatisfaction with any specific behaviour.

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Mon

18

Oct

2021

Comparison of Three Eccentric Overload Training Strategies on Power Output and Interlimb Asymmetry in Youth Soccer Players

The present study compared the effects of performing the lateral squat exercise in three different formats from eccentric overload training on concentric/eccentric peak/mean power and inter-limb asymmetries in young soccer players.

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Thu

14

Oct

2021

Intra-Season Variations in Workload Parameters in Europe’s Elite Young Soccer Players

The main purpose of the current study was to compare the within-season variations of workload, training duration, acute/chronic workload ratio (ACWR), training monotony and training strain (TS) through session rating perceived exertion (s-RPE) between starters and non-starters.

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Tue

12

Oct

2021

Fascial therapy, strength exercises and taping in soccer players with recurrent ankle sprains: A randomized controlled trial

The objective was to evaluate the effectiveness of a fascial therapy and strength training program, combined with kinesiotaping, in improving ankle range of motion, pain, strength and stability in footballers with recurrent sprains.

Read More

Mon

11

Oct

2021

The Influence of Menstrual Cycle on Bioimpedance Vector Patterns, Performance, and Flexibility in Elite Soccer Players

This study aimed to examine whether menstrual cycle affects body composition and bioimpedance vector analysis (BIVA) patterns, jumping and sprinting ability and flexibility in elite soccer players.

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Thu

07

Oct

2021

Neuromuscular Performance and Training Workload Over an In-Season Mesocycle in Elite Young Soccer Players

The purpose of this study was to assess neuromuscular performance capabilities over an in-season mesocycle in early career professional soccer players and examine the relationship with training workload.

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Wed

06

Oct

2021

The effect of core stability-based corrective exercises on gait parameters in elite footballers with Middle Crossed Syndrome

The aim of this study was to investigate the effect of eight weeks of core stability based corrective exercises, on gait parameters in elite soccer players diagnosed with middle crossed syndrome.

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Mon

04

Oct

2021

Match running performance in Brazilian professional soccer players: comparisons between successful and unsuccessful teams

This study aimed to compare the match running performance between bottom (BR)- and top-ranked (TopR) teams (4 each) in professional soccer players over the 2020 season of the Brazilian National 2nd Division League. This study verified the independent and interactive effects of playing position and contextual factors on running outputs between these teams.

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Fri

01

Oct

2021

Match running performance in Brazilian professional soccer players: comparisons between successful and unsuccessful teams

This study aimed to compare the match running performance between bottom- and top-ranked teams (4 each) in  professional soccer players over the 2020 season of the Brazilian National 2nd Division League. This study verified the independent and interactive effects of playing position and contextual factors on running outputs between these teams.

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Fri

17

Sep

2021

The Coaches’ Efficacy Expectations of Youth Soccer Players with Different Maturity Status and Physical Performance

This study aimed to report possible anthropometrical and physical performance differences between youth soccer players with different maturity status and to report the coaches’ expectations, hypothesizing that coaches would expect more from players with advanced maturity.

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Mon

13

Sep

2021

The Relationship Between Performance and Asymmetries in Different Multidirectional Sprint Tests in Soccer Players

The aims of this study were to analyze the association between linear sprint, curved sprints (CS) and change-of-direction (COD) speed performances and compare the association and direction of asymmetries between skills.

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Fri

10

Sep

2021

High-Intensity Intermittent Exercise Performed on the Sand Induces Higher Internal Load Demands in Soccer Players

This study aimed to examine the acute physiological effect of shuttle-run-based high-intensity intermittent exercise (HIIE) performed at the same relative speed (i.e. 100%PST−CAR) on sand (SAND) and grass (GRASS) in male junior soccer players.

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Wed

08

Sep

2021

Assessing Inter-Limb Asymmetries in Soccer Players: Magnitude, Direction and Association with Performance

We aimed to analyze the magnitude and direction of inter-limb asymmetries in ankle dorsiflexion range of motion (ROM), power (using iso-inertial devices) and a neuromuscular skill (change of direction). Secondarily, we aimed to determine the relationship between inter-limb asymmetry scores for each test and also between these scores and the scores for the different performance tests.

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Tue

07

Sep

2021

Scanning activity of elite footballers in match play: An eye-tracking analysis on the duration and visual information of scanning

The aim of this study was to examine the duration and information (number of teammates and opponents) of the players’ scanning behavior of four elite football midfield players in an 11 vs. 11 using mobile eye-tracking technology.

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Thu

02

Sep

2021

Is there meaningful influence from situational and environmental factors on the physical and technical activity of elite football players?

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.

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Thu

02

Sep

2021

Hip Abductor Muscle Strength Deficit as a Risk Factor for Inversion Ankle Sprain in Male College Soccer Players

The purpose was to identify risk factors for inversion ankle sprains among male collegiate soccer players.

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Mon

30

Aug

2021

Training Load in Different Age Category Soccer Players and Relationship to Different Pitch Size Small-Sided Games

This study sought to evaluate the training load in different age category soccer players associated with distinct pitch size small-sided games (SSGs).

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Fri

27

Aug

2021

Muscle Damage Biomarkers in Congestion Weeks in English Premier League Soccer Players: A Prospective Study for Consecutive Seasons

The current study was conducted to compare muscle damage biomarkers in single- vs. multi-match weeks in elite soccer players for two consecutive seasons. A secondary objective was to analyze the influence of playing position and exposure time on muscle damage in single- vs. multimatch weeks.

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Wed

25

Aug

2021

Low Horizontal Force Production Capacity during Sprinting as a Potential Risk Factor of Hamstring Injury in Football

Clear decreases in horizontal force production capacity during sprint acceleration have been reported after hamstring injuries (HI) in football players. We aimed to analyze the association between sprint running horizontal force production capacities at low (FH0) and high (V0) velocities and HI occurrence in football.

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Mon

23

Aug

2021

An Examination of the Relationship Between Coaches’ Transformational Leadership and Athletes’ Personal and Group Characteristics in Elite Youth Soccer

The purpose of the study was to examine the relationship between elite youth athletes’ perceptions of coaches’ transformational coaching-behaviours and variables linked to transformational leadership in other settings (i.e., group cohesion, motivational climate, self-regulation of learning and athlete satisfaction.

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Fri

20

Aug

2021

How Relative Age Effects Associate with Football Players’ Market Values: Indicators of Losing Talent and Wasting Money

In football, annual age-group categorization leads to relative age effects (RAEs) in talent development. Given such trends, relative age may also associate with market values. This study analyzed the relationship between RAEs and market values of youth players.

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Thu

19

Aug

2021

Effects of Age on Match-related Acceleration and Deceleration Efforts in Elite Soccer Players

The aim of this study was to examine the effects of chronological age on acceleration and deceleration match performance in professional footballers.

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Tue

17

Aug

2021

Observed and predicted ages at peak height velocity in soccer players

The purpose of the study was to evaluate predicted maturity offset (time before age at PHV) and age at PHV (chronological age [CA] minus maturity offset) in a longitudinal sample of 58 under-13 club level soccer players in central Portugal for whom ages at PHV were estimated with the SITAR model.

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Mon

16

Aug

2021

Motion Analysis of Match Play in U14 Footballers: Influence of Position, Competitive Level and Contextual Variables

This study aimed to investigate match running performance in U14 male soccer players in Norway, and the influence of position, competitive level and contextual factors on running performance.

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Thu

12

Aug

2021

Whole-body energy transfer strategies during football instep kicking: Implications for training practices

We hypothesized that fatigue induced by acute workload in short and intense games, might in either of two ways: by pushing lower limbs mechanics toward injury or by inducing opposed protective compensatory adjustments. We aimed at assessing the extent to which fatigue impact on joints kinematics and kinetics while performing repeated changes of direction (CoDs) in the light of the ACL risk factors.

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