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Full-Text Articles in Life Sciences

Identifying Sudden Cardiac Arrest Risk In Adolescent Male Athletes, Alexis Sattler, Susan Rozzi Jun 2024

Identifying Sudden Cardiac Arrest Risk In Adolescent Male Athletes, Alexis Sattler, Susan Rozzi

International Journal of Exercise Science

International Journal of Exercise Science 17(2): 874-886, 2024. The purpose of the study was to determine the prevalence of sudden cardiac arrest (SCA) risk factors in high school (HS) athletes. Thirty-three male soccer players from a public HS in the southeastern United States (ages 14-17) self-reported survey data. Participants reported demographic, lifestyle, heart health, COVID-19 history, and symptoms indicative of SCA risk. An electrocardiogram (ECG) assessed heart rate (HR), rhythm, and electrical activity. Resting HR and blood pressure (BP) were measured with a BP monitor. The association between COVID-19 history, HR, and BP were calculated. Participants were divided into ECG …


Mas And Mans Predicts Repeated Sprint Ability In Youth Soccer Players, Jørgen D. Olsen, Henrik R. Rognhaug, Daniel Kvamme, Øyvind Støren, Eva Maria Støa Jul 2023

Mas And Mans Predicts Repeated Sprint Ability In Youth Soccer Players, Jørgen D. Olsen, Henrik R. Rognhaug, Daniel Kvamme, Øyvind Støren, Eva Maria Støa

International Journal of Exercise Science

International Journal of Exercise Science 16(6): 846-854, 2023. The study investigated the impact of maximal aerobic speed (MAS) and maximal anaerobic sprint (MANS) on repeated sprint ability (RSA) in soccer. Methods: 17 amateur-to semi-professional soccer players, age 19 (± 4) years, were tested for maximal oxygen consumption (VO2max), oxygen cost of running (Cr), RSA consisting of 15×20m sprint each divided by a 100 seconds dribble track, and 40-meter sprint performance. MAS was calculated as VO2max × Cr −1, and MANS was defined as the highest velocity in the 40-meter sprint. Results: There was …


The Effects Of Shuttle Run And Three Corner Drill On The Agility Of Soccer Players In Soccer Academy, Nawan Primasoni, Donny Mahendra Prakosa, Tama Anugrah Dec 2022

The Effects Of Shuttle Run And Three Corner Drill On The Agility Of Soccer Players In Soccer Academy, Nawan Primasoni, Donny Mahendra Prakosa, Tama Anugrah

Jurnal Keolahragaan

Football is a game that is played by kicking the ball to get the ball into the opponent's goal. The game of soccer requires speed and agility. This study aims to determine the effects of shuttle runs and three corner drills on agility and to compare the effect of those exercises on the agility of twenty soccer players in the Soccer Academy. This experimental research employed the two groups of pretest-posttest design. The population used is a Kalasan soccer academy player with a total of 20 players. The sample used is the entire population and will be divided into two …


An Exploratory Comparison Of Subjective Mental Fatigue Following A Task Designed To Replicate The Observation Of Game Film, Anthony Magdaleno, Lenny Wiersma, Barbara B. Meyer Dec 2021

An Exploratory Comparison Of Subjective Mental Fatigue Following A Task Designed To Replicate The Observation Of Game Film, Anthony Magdaleno, Lenny Wiersma, Barbara B. Meyer

International Journal of Exercise Science

International Journal of Exercise Science 15(6): 25-35, 2022. Laboratory-induced subjective mental fatigue (MF) has been shown to decrease sport-related performance (23, 38), yet there is a lack of research identifying tasks in real-world sport environments that induce MF (37). Since the identification of real-world tasks that induce MF may inform activities undertaken in the daily training and competition environments, the purpose of the current study was to compare changes in MF following a task designed to replicate the observation of game film to changes in MF following completion of a laboratory-based task (e.g., Stroop test). On separate counterbalanced visits, participants …


Youth-To-Senior Transition In Elite European Club Soccer, Thomas Carpels, Nairn Scobie, Niall G. Macfarlane, Ole J. Kemi Oct 2021

Youth-To-Senior Transition In Elite European Club Soccer, Thomas Carpels, Nairn Scobie, Niall G. Macfarlane, Ole J. Kemi

International Journal of Exercise Science

International Journal of Exercise Science 14(6): 1192-1203, 2021. The priority for soccer academies is to develop youth players that graduate and transfer directly to their senior squads. 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. Relevant demographic longitudinal studies between 2009 and 2020 conducted by the International Centre for Sports Studies Football Observatory were analysed. The main findings were that the proportion of CTPs in senior squads has decreased from 23% to 17% over this time …


Depression In Collegiate Runners And Soccer Players: Relationships With Serum 25-Hydroxyvitamin D, Ferritin And Fractures, Devin C. Tomlinson, Evan Eschker, Jade Callan, Tamara Hew-Butler Sep 2021

Depression In Collegiate Runners And Soccer Players: Relationships With Serum 25-Hydroxyvitamin D, Ferritin And Fractures, Devin C. Tomlinson, Evan Eschker, Jade Callan, Tamara Hew-Butler

International Journal of Exercise Science

International Journal of Exercise Science 14(5): 1099-1111, 2021. The main purpose of this study was to evaluate relationships between depression versus serum 25-hydroxyvitamin D (vitamin D), serum ferritin (ferritin), and fractures across a competitive season. The authors conducted a prospective observational study (both pre- and post-season testing) on 51 collegiate soccer and cross-country athletes from a Midwest University. Our main outcome measure was depression, measured using the Center for Epidemiological Studies Depression Scale (CES-D). A CES-D score ≥ 16 represented the threshold value for clinical depression. Secondary outcome variables included vitamin D, ferritin, and fractures. Two athletes (3.9%; one female) …


Psychosocial Factors And The Effects Of A Structured Injury Prevention Workshop On Coaches’ Self-Efficacy To Implement The 11+ Exercise Program, Oluwatoyosi Owoeye, Carly Mckay, Anu Räisänen, Tate Hubkarao, Luz Palacios-Derflingher, Carolyn Emery Sep 2020

Psychosocial Factors And The Effects Of A Structured Injury Prevention Workshop On Coaches’ Self-Efficacy To Implement The 11+ Exercise Program, Oluwatoyosi Owoeye, Carly Mckay, Anu Räisänen, Tate Hubkarao, Luz Palacios-Derflingher, Carolyn Emery

International Journal of Exercise Science

International Journal of Exercise Science 13(5): 1459-1475, 2020. Psychosocial factors have both direct and indirect influence on behavior change. Self-efficacy is a key psychosocial factor driving behavior change. It is an individual’s perceived capability of performing a desired action. Structured injury prevention workshops targeting improvements in psychosocial factors in coaches may enhance the dissemination and implementation of the 11+ program in community settings. This study describes baseline psychosocial factors in youth soccer coaches and the effects of a structured 11+ injury prevention workshop on coaches’ self-efficacy to implement the 11+. An adapted questionnaire based on the Health Action Process Approach …


The Effect Of Static Stretching, Mini-Band Warm-Ups, Medicine-Ball Warm-Ups, And A Light Jogging Warm-Up On Common Athletic Ability Tests, Bryan Christensen, Colin W. Bond, Ryan Napoli, Kelly Lopez, Jason Miller, Kyle J. Hackney Feb 2020

The Effect Of Static Stretching, Mini-Band Warm-Ups, Medicine-Ball Warm-Ups, And A Light Jogging Warm-Up On Common Athletic Ability Tests, Bryan Christensen, Colin W. Bond, Ryan Napoli, Kelly Lopez, Jason Miller, Kyle J. Hackney

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 298-311, 2020. Proper warm-up is important for facilitating peak athletic performance and reducing injury risk; yet, warm-up procedures vary considerably amongst coaches and athletes. The purpose of this study was to assess the effect of a static stretching, medicine-ball, and mini-band warm-ups relative to a light jogging warm-up only on athletic ability test performance. It was hypothesized that static stretching would negatively affect performance, while medicine-ball and mini-band warm-ups would positively affect performance relative to light jogging only. Twelve female collegiate soccer players (19.3 ± 1.2y, 65.2 ± 7.5kg, 1.67 ± 0.07m) participated in …


In-Season High-Intensity Interval Training Improves Conditioning In High School Soccer Players, Neal Howard, Stasinos Stavrianeas Aug 2017

In-Season High-Intensity Interval Training Improves Conditioning In High School Soccer Players, Neal Howard, Stasinos Stavrianeas

International Journal of Exercise Science

International Journal of Exercise Science 10(5): 713-720, 2017. Soccer is characterized by high aerobic demands interspersed with frequent bursts of anaerobic activity. High-intensity interval training (HIIT) is considered a viable alternative to traditional endurance conditioning and offers the additional time-saving benefits of anaerobic training. We hypothesized that HIIT will compare favorably to traditional (aerobic-based) soccer conditioning over the course of a high school soccer season. Junior varsity soccer players were split into control (CON, n=16) and experimental (HIIT, n=16) groups for the 10-week study. The HIIT group performed 4-6 “all-out” sprints lasting 30s each, with 4.5 minute recovery, 3 times …


Performance And Perceptual Responses Of Collegiate Female Soccer Players To A Practical External And Internal Cooling Protocol, Rachel L. Holm, Veronika Pribyslavska, Samantha L. Johnson, Jordan B. Lowe, Mary C. Stevenson-Wilcoxson, Eric M. Scudamore, James M. Green, Charlie P. Katica, Eric K. O'Neal Oct 2015

Performance And Perceptual Responses Of Collegiate Female Soccer Players To A Practical External And Internal Cooling Protocol, Rachel L. Holm, Veronika Pribyslavska, Samantha L. Johnson, Jordan B. Lowe, Mary C. Stevenson-Wilcoxson, Eric M. Scudamore, James M. Green, Charlie P. Katica, Eric K. O'Neal

International Journal of Exercise Science

International Journal of Exercise Science 8(4): 331-340, 2015. This study examined practical pre- and mid practice cooling interventions on running performance, perceived exertion (RPE), and thermal sensation (TS) during soccer. During two formal pre-season practices female, NCAA Division II soccer players participated in three, 15 min scrimmage bouts followed by a 4th 10 min bout. Following the 1st, 2nd, and 3rd bouts, 8 field position players completed competitive sets of two, 30 yard sprints against other team members with time recorded between 5 and 30 yards. After the 4th bout, players completed an …


Are There Memory Deficits Among High School Participants From Heading Soccer Balls?, John R. Dayton, Dr. Donovan E. Fleming Jan 2014

Are There Memory Deficits Among High School Participants From Heading Soccer Balls?, John R. Dayton, Dr. Donovan E. Fleming

Journal of Undergraduate Research

A unique aspect of soccer is the use of the player’s head to direct the ball. Participants can “head” the ball to score a goal, pass to a teammate or gain control of possession. Studies performed on soccer players at the international2,5,7,10,12 and Olympic1 levels have shown memory2,3,4,6,8,9,10,12, attention3,6,11,12, concentration2,3,6,11,12, and judgment24 deficits. Is such damage due to practice schedule and necessitated drills, or is it the cumulative result of lifelong soccer participation? If due to lifelong participation, are high school participants at risk?


The Effects Of Heading On Neurocognitive Function In Female Collegiate Soccer Players During An Entire Soccer Season, Sarah E. Nonaka, Scott Mclean, Jimmy Smith Feb 2013

The Effects Of Heading On Neurocognitive Function In Female Collegiate Soccer Players During An Entire Soccer Season, Sarah E. Nonaka, Scott Mclean, Jimmy Smith

International Journal of Exercise Science: Conference Proceedings

Recently, much debate has occurred regarding the effects of repeated heading by soccer players on their neurocognitive function. PURPOSE: To determine the effects of heading on neurocognitive function in female collegiate soccer players during an entire soccer season. METHODS: Twenty-four members of the 2012 Southwestern University Women’s Soccer team completed the ImPACT test during preseason and postseason, and self-reported the number of headers for the week immediately prior to each testing session. Amount of playing time for each player was determined from records obtained from the Southwestern University Athletics Department. The six composite scores and the cognitive efficiency index from …


Interpreting Data Of A Repeated Sprint Test, Rafael Alkmin Reis, Denise Vaz De Macedo, René Brenzikofer Mar 2012

Interpreting Data Of A Repeated Sprint Test, Rafael Alkmin Reis, Denise Vaz De Macedo, René Brenzikofer

International Journal of Exercise Science: Conference Proceedings

Alterations in performance are often quantified through physical tests. However, although frequently used there are a few discussions about the reliability and interpretation of their results. The purpose of this study was to verify the reliability of a new method to access the repeated sprint ability denominated Labex-Test (LT) as well as analyzing the effect of 10 weeks of systematized training in soccer players' performance. LT consists of an uncertain number of sprints of 30m until a fall of performance of 10% is observed in relation to its initial speed. All the sprints are intercalated with 20 seconds of active …


General Modeling Of Vertical Jump Height With Countermovement Aids From Arms (Cmja) And Squat Jump (Sj) Techniques For Young Soccer Players, Tiago Volpi Braz, Leandro Mateus Pagoto Spigolon, João Paulo Borin Mar 2012

General Modeling Of Vertical Jump Height With Countermovement Aids From Arms (Cmja) And Squat Jump (Sj) Techniques For Young Soccer Players, Tiago Volpi Braz, Leandro Mateus Pagoto Spigolon, João Paulo Borin

International Journal of Exercise Science: Conference Proceedings

In the training of youngest soccer players, the knowledge of components of the explosive strength power as the contractile, elastic series and parallel series is fundamental in the sports preparation. Consequently, it is important to seek general models used as parameter for athletes, whether with morphofunctional characteristics, of sports preparation aspects or structure of competitive activity. So, this study aimed to seek an general model of vertical jump height with countermovement aids from arms (CMJa) and Squat Jump (SJ) techniques for young soccer players. Participants were 164 young soccer players (17.42±1.06 years) of juvenile and junior championship of Soccer Paulista …


Evaluation Of Strength Training Effects On Neuromuscular System In Soccer Players In Pre-Competitive Period, Nathália Arnosti Vieira, João Paulo Borin, Antonio Carlos Gomes Mar 2012

Evaluation Of Strength Training Effects On Neuromuscular System In Soccer Players In Pre-Competitive Period, Nathália Arnosti Vieira, João Paulo Borin, Antonio Carlos Gomes

International Journal of Exercise Science: Conference Proceedings

The evaluation of training programs in soccer modality in various moments of periodization is important in the sports preparation control process. So in this way, this study aimed to investigate neuromuscular adaptations during strength training in professional soccer game in pre-competitive period. 15 professional soccer players, aged between 18 and 28 years participated of this study. Initially they were submitted to explosive strength test (Squat Jump), speed resistance (RAST) and displacement velocity (10 and 30m). Two evaluations were performed: one in the beginning of the study (M1), and the other (M2) after 12 weeks. In the first 6 weeks speed …


Elastic Explosive Strength Alterations In Young Soccer Players In Preparatory Stage, Leandro Mateus Pagoto Spigolon, Tiago Volpi Braz, João Paulo Borin Mar 2012

Elastic Explosive Strength Alterations In Young Soccer Players In Preparatory Stage, Leandro Mateus Pagoto Spigolon, Tiago Volpi Braz, João Paulo Borin

International Journal of Exercise Science: Conference Proceedings

The explosive strength has been pointed as one of physical capacities present in decisive moments in soccer game. So, the aim of this study was to verify possible alterations in elastic explosive strength performance in ten young soccer players (16.54 ± 0.54 years; 73.10 ± 8.36 kg; 178.10 ± 7.67 cm). During the match in preparatory stage to championship, the elastic explosive strength was evaluated by vertical jump with countermovement aid from arms (CMJa), using contact plataform Jump Test® in 3 moments: before, in the interval and after game. BioEstat 5.0 software produced information in descriptive plan (mean and standard …


Competitive Modeling Of Heart Rate In Brazilian Juniors Soccer Players, Tiago Volpi Braz, Leandro Mateus Pagoto Spigolon, João Paulo Borin Mar 2012

Competitive Modeling Of Heart Rate In Brazilian Juniors Soccer Players, Tiago Volpi Braz, Leandro Mateus Pagoto Spigolon, João Paulo Borin

International Journal of Exercise Science: Conference Proceedings

The heart rate (HR) has been used as indicator of competitive actions intensity in soccer players. The aim of this study was to analyze the competitive modeling of HR in eight brazilian juniors soccer players (18.84 ± 1.04 years; 71.19 ± 8.60Kg; 177.25 ± 6.04 cm) during a preparatory stage game. All were evaluated with Polar® heart rate monitor Team System model in five moments: warm-up (16min and 40s), recovery (8min and 15s), 1st half (48min), interval (7min and 45s), 2nd half (45min and 30s), and the heartbeats saved every 5 seconds. After collection, the data were kept in computational …


Changes In Heart Rate And Blood Pressure In Sub-18 Soccer Players Tested With Running-Based Anaerobic Sprint Test, João Bartholomeu Neto, Cláudio De Oliveira Assumpção, Ricardo Yukio Asano, Marco Antonio De Freitas Souza Mar 2012

Changes In Heart Rate And Blood Pressure In Sub-18 Soccer Players Tested With Running-Based Anaerobic Sprint Test, João Bartholomeu Neto, Cláudio De Oliveira Assumpção, Ricardo Yukio Asano, Marco Antonio De Freitas Souza

International Journal of Exercise Science: Conference Proceedings

The Running-Based Anaerobic Sprint Test (RAST) is an important tool for prescribing and monitoring training. The aim of this study was to evaluate cardiovascular changes by the variables heart rate and blood pressure in soccer players tested with RAST. A trial with 20 soccer players who trained daily and participated in sub-18 soccer championships. The heart rate (HR) was collected at rest (before warming) and right after the end of the test, as well as the systolic (SBP) and diastolic (DBP) blood pressure. For statistics it was used the paired t-test with p<0.05. The collected data show that the values at resting time point can be considered normal for healthy young people and after the test it was observed that the HR and SBP increased significantly as compared with resting time, and the DPB presented no statistically changes. Conclusion: The results showed that the cardiovascular changes occurring in the RAST test, which is an effort with anaerobic features, are similar to changes in high-intensity aerobic efforts.


Comparative Study Of Injury Incidence In Soccer Players During Regional Games Of Sertãozinho – 2006 And Jaboticabal – 2008, Luiz Fernando Approbato Selistre, Luciano Maia Alves Ferreira, Oswaldo Stamato Taube, Edson Alves Barros Jr. Mar 2012

Comparative Study Of Injury Incidence In Soccer Players During Regional Games Of Sertãozinho – 2006 And Jaboticabal – 2008, Luiz Fernando Approbato Selistre, Luciano Maia Alves Ferreira, Oswaldo Stamato Taube, Edson Alves Barros Jr.

International Journal of Exercise Science: Conference Proceedings

Soccer is one of the most popular and practiced sports in the world. This sport has been changed over the years and instead of emphasis on technique, currently the physical components are more favored, increasing the injury risk. Regional Games were created to stimulate young athletes and sports practice. The aim of this study was to perform a comparative epidemiological survey of male sub-21 soccer players injuries in the Regional Games of 2006 and 2008. This is an epidemiological and comparative study of analytical type. Records of assessment used at Regional Games of Sertãozinho 2006 and Jaboticabal 2008 were consulted. …


Caffeine Supplementation And Intermittent Exercise: Effects On White Blood Cells, Marco Machado, Felipe Sampaio- Jorge, Juliano G. Barreto, Rodrigo A. Lazo-Osorio Mar 2012

Caffeine Supplementation And Intermittent Exercise: Effects On White Blood Cells, Marco Machado, Felipe Sampaio- Jorge, Juliano G. Barreto, Rodrigo A. Lazo-Osorio

International Journal of Exercise Science: Conference Proceedings

Caffeine is a common substance in the diets of most athletes and it is appearing in energy drinks, sport gels, alcoholic beverages and diet aids. The effects of caffeine ingestion prior to endurance training have been extensively studied. However, less is known concerning the effects of caffeine ingestion prior to intermittent exercise. The purpose of this study was to evaluate the effect of caffeine ingestion prior to intermittent exercise on white blood cells in soccer players. 15 professional soccer players completed a double-blind, placebo-controlled experiment. Forty-five minutes before exercise all subjects received 5.5 mg.kg-1 of caffeine (E+C, n=8) or placebo …


Isokinetic Knee And Hip Torque In Ncaa Division I Female Soccer Athletes, Kelly A. Brooks, Samantha L. Clark Jan 2012

Isokinetic Knee And Hip Torque In Ncaa Division I Female Soccer Athletes, Kelly A. Brooks, Samantha L. Clark

International Journal of Exercise Science: Conference Proceedings

PURPOSE: The purpose of this study was to determine the relationship of isokinetic knee and hip torque to various physiological characteristics and soccer-specific variables, such as kick velocity (KV) and body fat percentage (BF%) specifically in female collegiate soccer players. METHODS: Anthropometric data was collected on 22 division I female soccer players. Maximum strength, explosive lower body power, agility, acceleration, speed, and aerobic power were tested. Anthropometric data was collected on age, height, weight, and body composition. Body composition was assessed using the Jackson-Pollock 3- Site Skinfold Formula procedure using the Lange skinfold calipers. A one repetition max (1-RM) squat …