Sports Sciences Commons^™

Relationships Between Lower Body Anthropometrics And Vertical Force-Velocity Profiles In Collegiate American Football Players, Nicholus Adam Despot

Doctoral Dissertations and Projects

The study examined the relationships between lower-body anthropometric characteristics and vertical force-velocity profiles in collegiate American football players. Although the use of force-velocity profiling has increased significantly in recent years, there has been limited research on the association between structural features and key mechanical outputs. A sample of 16 NAIA football players was used to examine how skeletal breadths, girths, and derived ratios relate to key force-velocity metrics. Anthropometric variables were collected using ISAK standards, while force-velocity profiles were obtained through a series of loaded squat jumps on a force platform. Mean propulsive force, velocity and power were used to …

Interpretable Case-Control Inference Through Log-Linear General Location Models, Zacharia Stuart

Mathematics & Statistics ETDs

This dissertation analyzes one of the few publicly available NFL injury datasets to study field type and non-contact lower-limb injuries. Field type is studied jointly with other risk factors to understand how these factors interact to affect injury risk. The data were gathered through a case-control sampling scheme, which limits direct inference on absolute injury probabilities. While not the most common approach for case-control data, this dissertation models the retrospective distribution directly through Log-Linear General Location Models (Log-Linear GLOMs). Through a log-linear structure placed on a log-odds-ratio reparameterization, the model provides directly interpretable marginal and interaction contributions to injury log-odds …

Evaluation Of The Effectiveness Of The Guardian Protective Cap In Reducing The Incidence And Recovery Duration Of Concussions Among Division Ii Collegiate Football Players In The State Of West Virginia, Dave Mcentire

Doctoral Dissertations and Projects

This study focuses on a retrospective quasi-experimental design to evaluate the effectiveness of the Guardian protective cap in reducing the incidence and recovery duration of concussions among Division II football players in the state of West Virginia. The study will evaluate the medical records, obtained from the NCAA certified athletic trainers, of four seasons worth of data from two separate football teams. The study will examine two seasons worth of data of the teams prior to mandating the usage of the protective caps during practice, and two seasons of data following their implementation. The study will compare the overall incidence …

Domain-Specific Concussion Knowledge And Reporting In United States Major League Rugby Players, Julie Stamm, Katherine Hunzinger, Owen Sheehy, Christine Baugh

Department of Exercise Science Faculty Papers

Previous research indicates high concussion knowledge is not associated with better concussion reporting, with research examining the relationship between reporting and global concussion knowledge. Concussion knowledge has not yet been investigated in United States Major League Rugby (MLR) players. This study evaluated domain-specific concussion knowledge, concussion history, and reporting behaviors among active MLR players. In a cross-sectional design, 207 MLR athletes (age 26.6 ± 3.4 years) completed a survey assessing concussion history, knowledge, and nondisclosure reasons. While in the MLR, 24% reported an undisclosed concussion, with nondisclosure reasons related to a lack of concussion knowledge, a desire to continue playing, …

Chronic Traumatic Encephalopathy And Career Duration In Former Professional American Football Players: A Literature Review, Malik I. Watson, Chase Forbes, Bhavik Singh, Etop Udoh, Kévin Borgella, Jonathan Mosley, Erik Zarandy

The Journal of Integrated Primary Care

Background:

Chronic traumatic encephalopathy (CTE) is a progressive neurodegenerative disease associated with repetitive head trauma and has been increasingly identified in former contact sport athletes, particularly American football players. Although the relationship between repetitive head impacts and CTE has been well documented, the role of career duration as a measurable exposure variable remains an important area of investigation. Understanding this relationship may provide clinically useful insight for primary care physicians responsible for longitudinal monitoring of individuals with extensive athletic exposure.

Methods:

This literature review examined published studies evaluating the relationship between football career duration, cumulative head impact exposure, and neuropathologic …

Assessment Of Countermovement Jump In Athlete Status And Monitoring, Michael David Delong

Graduate Theses, Dissertations, and Problem Reports (ETD)

Utilizing a CMJ to test athlete physical abilities and training program efficacy is popular, as it is simple, noninvasive, and has significant relations with sport qualities. However, assessments often use discrete outcome measures. This research explored strategy-based measures accounting for eccentric power and time and may explain athlete status more effectively. The research objectives are to analyze the use of the mean power rate of the CMJ to compare athletes' playing ability and its usefulness in monitoring during off-season training. Additionally, power-time curve analysis added location and timing of effects due to fatigue or fitness adaptation. Proper testing and monitoring …

Effect Of Pitch Dimensions On External Load Measures During Large-Sided Soccer Games: Manipulating Pitch Size To Control Load, Alireza Rabbani, Robert Trybulski, Filipe Manuel Clemente

Baltic Journal of Health and Physical Activity

Background: The aims of this study were to examine the variability and differences of selected external load metrics during soccer large-sided games (LSGs) depending on the pitch size. Materials and methods: The external load metrics of 13 male soccer players were monitored during 14 sessions. These metrics included total distance (TD), high-intensity running distance (HIR) (meters covered with speed >14.4 km^.h^-1), high-speed running distance (HSR) (meters covered with speed >19.8 km^.h^-1), high-metabolic load distance (HMLD), mechanical work (MW) (the sum of accelerations and decelerations >3 m²), maximal velocity (Max V) …

Effects Of Different Loads Used In Post-Activation Potentiation Exercises On Sprint And Vertical Jump Performance Of Young Amateur Soccer Players, Emre Karaday, Yusuf Köklü, Erhan Işıkdemir, Bilal Utku Alemdaroğlu, Özlem Köklü

Baltic Journal of Health and Physical Activity

Background: The purpose of this study was to investigate the effects of different loads used in post-activation potentiation (PAP) exercises on the vertical jump and sprint performance of young amateur soccer players. Materials and methods: Twelve young amateur soccer players (age: 16.3 ± 1.2 years; height: 172.6 ± 3.88 cm; body weight: 63.2 ± 6.7 kg; training experience: 2.3 ± 1.4 years) participated voluntarily. The half squat exercise was performed in unloaded conditions and at three different intensities (L1:80%, L2: 90%, and L3: 100% of one-repetition maximum [1RM]), and its effects on players' countermovement jump (CMJ) and 30 m sprint …

The Relationship Between Individualised Speed Thresholds And Changes In Aerobic Fitness In Elite Professional Youth Soccer Players. A Case Study, Ronan Kavanagh, Kevin Mcdaid, David Rhodes, Jill Alexander, Damian Harper, Rafael Oliveira, Kieran Berry, Mark Connor, Piotr Zmijewski, Ryland Morgans

Baltic Journal of Health and Physical Activity

Background: This study aimed to examine the dose-response relationship between training load and aspects of physical fitness in English Premier League (EPL) U23 soccer players. Materials and Methods: Seven male EPL U23 outfield soccer players (age 20.1±1.1 years) participated in this study and performed the Bronco test on five occasions within one season. Individualised running thresholds were employed using maximal aerobic speed (MAS), anaerobic speed reserve (ASR) and maximal sprint speed (MSS) values utilising a GPS system. Results: No significant differences in the Bronco performance between the tests (p > 0.05, ES = 0.101) were observed. Distance covered above 30% …

Georgia Southern Football Gameday Programs, Zach S. Henderson Library Special Collections

Finding Aids

The Georgia Southern Football Gameday Programs collection contains official publications produced for Georgia Southern University football games, most recently titled, Georgia Southern End Zone: The Official Publication of Eagle Football. The collection also features official gameday programs from away games, published by the hosting teams as well as special-issue editions from the postseason. These materials, spanning 1985-2009, document team rosters, coaches, statistics, and game information, offering a comprehensive record of Georgia Southern football events both at home and on the road.

Investigating The Internal And External Load Associated With Umpiring Semi-Professional Australian Rules Football, Corey Wilson, Mark Scanlan, Colin S. Doherty, Oliver R. Barley

Research outputs 2022 to 2026

Background: This investigation examined internal and external load associated with umpiring semi-professional Australian Rules football, an area of limited research. Objective: This exploratory quantitative study recruited 39 field umpires (Age: 25.2 ± 6.8 y, Body Mass: 74.6 ± 7.9 kg, Height: 178.9 ± 7.4 cm) from the Western Australian Football League (WAFL). Each participant was assessed in one match only. Methodology: External measures (total distance [TD], floating distance [FSD], high-intensity running distance [HSD]) and internal measures (blood lactate [BLa], heart rate [HR], rating of perceived exertion [RPE]) were collected during 22 matches, of the 2023 WAFL season. Data collection was …

Correlation Between Body Weight And Eccentric Hamstring Strength In American Football Players, Ty K. Hacking, Malorie Wilwand, Aaron W. Johnson, B. Brett Mortensen

International Journal of Exercise Science: Conference Proceedings

Hamstring strength and explosiveness is imperative for collegiate American football players to perform at the highest level. Understanding the respective correlations, based on players positions, between eccentric hamstring strength (HS) and body weight (BW) among football players may help coaches and players to develop strength protocols required for specific positions. We hypothesize that increasing BW will result in increased eccentric HS. PURPOSE: This study aims to examine the relationship between football players BW and their max eccentric HS. METHODS: As a secondary analysis from the HAMIR study, 95 (age: 21.4 ± 2.00 yr; Ht: 187.7 ± 6.17 cm; …

Lower Extremity Muscle Volume As A Prediction For Sprint Speed In Collegiate Football Players, Malorie Wilwand, Joshua Sponbeck, Steven P. Allen, Greg Snow, Iain Hunter, Aaron W. Johnson

International Journal of Exercise Science: Conference Proceedings

Sprinting is a crucial component of success in American football regardless of the position group. PURPOSE: To evaluate the relationship between muscle volume (MV) of the lower body muscles and sprint performance among different AF position groups. METHODS: This was a secondary analysis from the HAMIR study. The study included NCAA Division I AF players aged 18 and older who were active on the roster and not injured at the time of data collection. Positions were grouped as follows: the combo group (linebackers and tight ends), the big group (offensive and defensive linemen), and the skill group (defensive …

Efficiency Of One Against One Game Situations In Polish Soccer National Team And Their Opponents During Uefa European Championship Matches, Andrzej Szwarc, Krzysztof Kromke, Henryk Duda, Andrzej Soroka, Lukasz Radziminski

Baltic Journal of Health and Physical Activity

Introduction: The purpose of this study was to assess the efficiency in one against one (1v1) game situations of Polish national team soccer players and their opponents in 12 matches of the group stage in 4 consecutive cup finals at the European Championship in the years 2008–2021. Material and methods: Audio-visual records of matches were analysed and data about the game were recorded on a self-developed observation sheet. Activity, effectiveness and reliability of individual offensive and defensive actions were assessed in the context of implementation of the game objectives. Results: It was found that the Polish players were involved in …

The Acute Effect Of Releasing The Thoracolumbar Facia By Osteopatic Technique On Lower Extremity Functional Performance On Lumbar Extensor Endurance And Mobility In Soccer Players, Erkan Özyılmaz, Ömer Şenel, Hasan Aka, Zait Burak Aktuğ

Baltic Journal of Health and Physical Activity

Introduction: The aim of this study is to examine the acute effect of osteopathic release of the thoracolumbar fascia on lower extremity functional performance, lumbar extensor endurance and mobility in professional soccer players. Materials and Methods: 30 volunteer male athletes who professionally play soccer participated in the study, and the participants were randomly divided into experimental and control groups. The functional performance of the lower extremities, lumbar extensor endurance and mobility of the subjects were measured twice – before and immediately after the Still Technique and placebo applications. Subjects' lower extremity functional performance was determined by the Single Leg Hop …

Identification Of Differences In Height, Weight, And Body Mass Index Based On Playing Position In Amateur Female Football Athletes, Eggy Nur Arfiansyah, Kristoforus Nono Koba, Fauzan Asa Habiburrahman, Surya Rihadi Wicaksono, Swandika Pinem

Indonesian Journal of Research in Physical Education, Sport, and Health

Background: Research interests in women's football has increased over recent years. Several factors can influence a woman's fitness level, including body composition (height, weight, and body mass index). Knowledge of anthropometry can help assess and evaluate the specifics of training programs. This is to identify players who may be considered necessary to successfully implement tactical roles and reference norms for developing future football-playing talent. Objective: This study aimed to identify differences in height, weight, and body mass index based on playing positions of female amateur football athletes. Methods: The population and sample in this study were 24 amateur female football …

Analysis Of The Relationship Between Knowledge, Behaviour, Prevention, And Self-Efficacy On The Mental Health Of Athletes During The Covid-19 Pandemic, Fahrial Amiq, Fidia Rizkiah Inayatilah, Prayogi Dwina Angga

Indonesian Journal of Research in Physical Education, Sport, and Health

Background: Mental health has become a trending topic during the pandemic. Many athletes have experienced decreased performance during the pandemic, but not a few athletes are able to control their mental health. Objective: The purpose of this study was to examine the relationship between knowledge, preventive behaviour, and self-efficacy on mental health in professional football athletes during the COVID-19 pandemic. This research uses quantitative methods. Methods: This type of research is observational with a cross-sectional study. Eighty professional football athletes were involved in this research. The sampling technique was carried out using a proportional stratified simple random sampling technique.  This …

On The Value Of A Premium College Football Player: Evaluating The Literature, Jeremy M. Losak, Benjamin J. Posmanick, Raymond Sauer

Sport Management - All Scholarship

Over the past decade, the issue of player compensation in college sports has been the subject of several successful legal challenges. Athletes contend that the compensation they receive falls significantly short of the value they generate, attributing this gaps to unlawful NCAA restrictions. Numerous tools exist in the sport economic literature that estimate the value of colelge athletes, with an emphasized focus towards premium college football players. In addition to providing updated estimate of player marginal revenue product (MRP), we review past and contemporary methodologies for esitmating colllege player MRPs. We contend that, while presenting some evidence that restrictions on …

The Relationship Between Shoulder Mobility And Upper Body Muscle Mass On 2-Rm Bench Press Performance, Raquel J. Cavazos, Francesca Aquilino, Ernesto Balderrama, Chaehyun Byun, Shelby Gerner, Cheyenne Martinez, Austin Riffe, Vipa Bernhardt, Michael D. Oldham

International Journal of Exercise Science: Conference Proceedings

INTRODUCTION: Upper body strength is one of the most important factors in American football and thus tested frequently. However, strength may come at the cost of mobility as recent studies have reported an inverse relationship between shoulder range of motion (ROM) and strength, with an increase in strength causing a decrease in ROM (Shitara et al., 2022). PURPOSE: The purpose of this study was to determine if upper body muscle mass or shoulder mobility are associated with two-repetition max (2-RM) bench press performance in collegiate football players. METHODS: Data from 80 Division I varsity football players (20.5 ± 1.4 …

Introduction Of The ‘Blue Card’ Concussion Policy To Semi-Elite Australian Football: Medical Staff Experiences And Perceptions, Jacob Raymond Msando, Gill Cowen, Sarah A. Harris, Troy Kirkham, Myles C. Murphy

Research outputs 2022 to 2026

Background The Western Australian Football League (WAFL) introduced a new umpire driven ‘blue-card rule’ for concussion, but its benefit to the sports medicine team is unknown. Purpose To determine the experiences and perceptions of medical staff within the 2022-2023 Men’s and Women’s WAFL competitions following the introduction of the ‘blue-card rule’. Study Design Cross-sectional study. Method An online survey was delivered through Qualtrics to all WAFL medical staff (doctors, physiotherapists, head trainers). The survey contained four sections (demographics, concussion knowledge, concussion exposure and blue-card perceptions) with closed and multiple-answer questions. Standard methods for reporting descriptive data were applied, including mean …

No Difference Found In Hamstring Strength Across Division I Football Positions, Hunter Jack, Kaden Kennard, Spencer Jezek, Joshua Sponbeck, Malorie Wilwand, A. Wayne Johnson

International Journal of Exercise Science: Conference Proceedings

Hamstring injuries are one of the most common injuries sustained in professional football with 800+ hamstring injuries per year. These hamstring injuries often occur between late swing (eccentric contraction) and early ground contact. PURPOSE: To investigate the correlation of eccentric hamstring strength to muscle volume across positional groups. METHODS: Athletes were divided into three homogeneous groups based on position (big (e.g., linemen), skill (e.g., receivers), combo (e.g., linebackers)). Seventy-three NCAA Division I football players participated (24 big, 37 skill, and 12 combo). Hamstring strength was collected for each leg while performing 3 Nordic curls on a Nordbord device. The peak …

Effectiveness Of Using Exercise App In Improving Exercise Adherence And Aerobic Endurance Of Football Players, Cheryll D.N.N. Obra, Agatha C.S. Quidilla, Rome J. Cajigal, Jannah K.A. Jerez, Shiela M.A. Ramos, Reyma J.C. Malabed

Philippine Journal of Physical Therapy

Introduction. The use of mobile apps known as mHealth is starting to shape the delivery of physical therapy care not only in patients but also to the healthy population. Using an exercise app is a potential strategy to promote physical activity among individuals. Thus, this pilot study examined the utility of the Nike® Training Club app in increasing exercise adherence and enhancing aerobic endurance.

Methods. The study utilized one-way repeated measures over time quasi-experimental design. It used purposive sampling to select 10 college football players aged 18-25 years old. After downloading the app, the participants were required to perform a …

The Peter Principle In Nfl Coaching Hires: An Analysis Of Success Of Nfl Head Coaching Hiring Based On Experience, Sam Malone-Povolny

Master of Science in Kinesiology

The NFL is a massive professional sports organization with worldwide impact for its players and coaches. NFL head coaches come from all walks of life but end up falling into two categories once hired: Either a former head coach is hired to helm a new team or a rising assistant coach is brought in to inject some new ideas. Whichever category they fall into, the team members become a reflection of the coach’s ideas and values. And, how well the team does in terms of on-field success is often the main dictation of the coach’s future with the franchise. Using …

Low Pre-Season Hamstring-To-Quadriceps Strength Ratio Identified In Players Who Further Sustained In-Season Hamstring Strain Injuries: A Retrospective Study From A Brazilian Serie A Team, Filipe Veeck, Cassio V. Ruas, Matheus Daros Pinto, Rafael Grazioli, Gustavo Pacheco Cardoso, Thiago Albuquerque, Lucas Schipper, Henrique Gonçalves Valente, Victor H. Santos, Márcio Dornelles, Paulo Rabaldo, Clarice S. Rocha, Bruno Manfredini Baroni, Eduardo Lusa Cadore, Ronei Silveira Pinto

Research outputs 2022 to 2026

A common pre-season injury prevention assessment conducted by professional football clubs is the hamstring-to-quadriceps (H:Q) strength ratio calculated by peak torque (PT). However, it is debatable whether players that present low pre-season H:Q ratios are more susceptible to further sustaining in-season hamstring strain injuries (HSI). Based upon retrospective data from a Brazilian Serie A football squad, a particular season came to our attention as ten out of seventeen (~59%) professional male football players sustained HSI. Therefore, we examined the pre-season H:Q ratios of these players. H:Q conventional (CR) and functional (FR) ratios, and the respective knee extensor/flexor PT from the …

Adaptation Of The Love–Hate Scale For Sports Fans Into Turkish: A Validity And Reliability Study, Sercan Kural, Oguz Ozbek, Bulent Gurbuz

Baltic Journal of Health and Physical Activity

Introduction: This research has been conducted so it can help to understand the feelings of love and hatred towards the opposing team and their supporters of football club fans and to determine and control the fans’ aggression. Objective: This study aims to adapt the Love–Hate Scale for Sports Fans (LHSSF) to the Turkish context to evaluate the fanatic (love and hate) feelings of football fans. Methods: The study groups consisted of 205 football fans aged 18–58 years (mean age = 30.11). The original version of the scale consists of seven items and two sub-dimensions. To test the construct validity of …

Which Position In American Football Is More Likely To Get You Benched Due To Lei? An Analysis Of Nfl Players Injured In The Years 2016-2020., Robert A. De La Torre, Abdullah Sahyouni, Kinan Sawar, Gautham Pavar, Cristian J. Diaz Alvarenga, Shravan Morisetty, Bohdan Matsko, Justin Bennie, Niyaz Uddin, Olvia Pakula

Medical Student Research Symposium

Title: Which position in American Football is more likely to get you benched due to LEI? An Analysis of NFL Players injured in the years 2016-2020.

Authors: Robert de la Torre, Abdullah Sahyouni, Kinan Sawar, Gautham Pavar, Cris J. Diaz Alvarenga, Shravan Morisetty, Justin Bennie, Bohdan Matsko, Niyaz Uddin, Olivia Pakula

Introduction:

In American Football, there are twenty-four different positional roles that a player may assume. Some positions are unique to offense, such as quarterback and wide receiver. Others are unique to defense, such as cornerback or linebacker. There are also unique positions such as kicker or punter. All of …

Characteristics Of The Efficiency Of Actions Of Top-Level Goalkeepers In Soccer, Andrzej Szwarc, Michał Chamera, Henryk Duda, Daniel Memmert, Lukasz Radziminski

Baltic Journal of Health and Physical Activity

The aim of this study was to present the characteristics of the actions efficiency in elite goalkeepers. 54 observations of 25 goalkeepers participating in 27 matches of the World and the European Championships and the Africa Cup of Nations and Copa America held in the years 2014–2019 were included. The study applied a method of observation. Game data were registered on a self-developed observation sheet. Goalkeepers’ activity, effectiveness, and reliability with a view to implementing the objectives of the game were analyzed in offensive and in defense. It was found that in the elite goalkeepers’ game, offensive actions constitute 62% …

The Effects Of Repeated Sub-Concussive Impacts On Reaction Time Across A Football Season, Theodore Mostellar

West Chester University Master’s Theses

Context: Recent evidence suggests an accumulation of head impact exposures may influence neurocognitive functioning over time. Objective: The purpose of this study was to analyze the relationship between sub concussive impacts and reaction time in collegiate football players across a football season. Design: Observational cohort study. Setting: Data was collected at a NCAA Division III college throughout the 2022 competitive football season. Participants: 25 players volunteered for the study. Main Outcome Measures: HIE (99%,95%,

Development Of A Standardised System To Classify Injury-Inciting Circumstances In Football: The Football Injury Inciting Circumstances Classification System (Fiiccs), Francesco Aiello, Alan Mccall, Susan J. Brown, Andreas Serner, Lauren V. Fortington, Suzanne A. E. Huurman, Colin Lewin, Masashi Nagao, James O’Brien, Anastasia Panossian, Ricard Pruna, Guilherme P. Ramos, Matthew Whalan, Franco M. Impellizzeri

Research outputs 2022 to 2026

Background: A comprehensive examination of the sport-specific activities and circumstances being performed at the time of injury is important to hypothesise mechanisms, develop prevention strategies and inform future investigations. Results reported in the literature are inconsistent because inciting activities are reported using different classifications. Hence the aim was to develop a standardised system for the reporting of inciting circumstances. Methods: The system was developed using a modified Nominal Group Technique. The initial panel included 12 sports practitioners and researchers from four continents with respectively ≥ 5 years of experience working in professional football and/or conducting injury research. The process consisted …

The Effects Of A Unilateral Strength And Power Training Intervention On Inter-Limb Asymmetry And Physical Performance In Male Amateur Soccer Players, Francesco Bettariga, Luca Maestroni, Luca Martorelli, Paul Jarvis, Anthony Turner, Chris Bishop

Research outputs 2022 to 2026

The aims of this study were (a) to investigate the effects of a unilateral training program in reducing inter-limb asymmetry in male soccer players; (b) to explore such effects on measures of physical performance and unilateral inter-limb asymmetry. Twenty-four soccer players, randomly assigned to a 6-week unilateral strength and power training (UNI) (n = 12) or a control group (CON) (n = 12), performed single countermovement jump (SLCMJ), single leg broad jump (SLBJ), single leg drop jump (SLDJ), 10-m sprint, and 505 change of direction (COD) speed test. Raw jump scores revealed small to large improvements in SLCMJ, SLBJ, and …