Sports Sciences Commons^™

Physical And Technical Demands Of Australian Football: An Analysis Of Maximum Ball In Play Periods, Christopher Wing, Nicolas H. Hart, Fadi Ma’Ayah, Kazunori Nosaka

Research outputs 2022 to 2026

Background: This study compares ball in play (BiP) analyses and both whole game (WG) and quarter averaged data for physical and technical demands of sub-elite Australian football (AF) players competing in the West Australian Football League across playing positions. Methods: Microsensor data were collected from 33 male AF players in one club over 19 games of the 2019 season. BiP time periods and technical performance data (e.g., kicks) were acquired from the Champion Data timeline of statistics, and time matched to the microsensor data. Linear mixed modelling was utilised to establish differences between maximum BiP periods and averaged data ...

Physical And Technical Demands Of Offence, Defence, And Contested Phases Of Play In Australian Football, Christopher Wing, Nicolas H. Hart, Fadi Ma’Ayah, Kazunori Nosaka

Research outputs 2022 to 2026

Background: This study compared the physical demands and effect of field location for different phases of play (offence, defence and contested), and examined the physical and technical demands of successful and unsuccessful phases of play during Australian Football matches. Methods: Global positioning system (GPS) and technical performance data were collected from 32 male Australian Football players in one club over 19 games in the 2019 season. The GPS data was aligned with phases of play acquired using Champion Data. Linear mixed models were used to detect differences between phases of play and field location which were further contextualized using Cohen ...

Association Between Visuomotor Skills And The Effects Of Stroboscopic Vision On Depth Jump Performance, Riley Welch

All Graduate Plan B and other Reports

The reactive strength index (RSI) is a popularized method of evaluating depth jump performance. Performance in anticipation of ground impact is influenced by the proprioceptive, vestibular, and visuomotor systems through multisensory integration. The contribution of vision to depth jump performance has been studied through use of stroboscopic goggles, but no study has evaluated which visuomotor skills may be a predictor for DJ performance. The purpose of this investigation was to evaluate the association between visuomotor skills and the effects of stroboscopic vision on DJ performance. Participants consisted of 9 female and 13 male college aged adults. DJ performance was evaluated ...

Effects Of Imu Sensor Location And Number On The Validity Of Vertical Acceleration Time-Series Data In Countermovement Jumping, Dianne Althouse

All Graduate Plan B and other Reports

Many devices are available for measuring the height of a CMJ. An inertial measurement unit (IMU) measures linear acceleration, orientation, and angular velocity. As an alternative to using IMU estimates of flight time, CMJ height could be estimated by integrating the IMU time-series signal for vertical acceleration to derive CMJ take-off velocity in order to track whole-body center of mass (WBCoM) movement, yet this approach would require valid IMU acceleration data. Thus, the purpose of this study was to quantify the effects of IMU sensor location and number on the validity of vertical acceleration estimation in CMJ. Thirty young adults ...

Coach And Athlete Perceptions Of The Effects Of The Menstrual Cycle On Female Athletic Performance, Erin Dietz

Honors Projects

The purpose of this study is to examine the knowledge of the effects of the menstrual cycle on female athletic performance from both athletes and their coaches at the NCAA Division III level. Recommendations for coaches based on the findings of the research are provided. The study investigates whether female athletes and their coaches are aware of the physiological and psychological effects of the menstrual cycle and how they are managed throughout the course of a sport season.

Rainbow Perfect And Near-Perfect Matchings In Complete Graphs With Edges Colored By Circular Distance, Shuhei Saitoh, Naoki Matsumoto, Wei Wu

Theory and Applications of Graphs

Given an edge-colored complete graph K_n on n vertices, a perfect (respectively, near-perfect) matching M in K_n with an even (respectively, odd) number of vertices is rainbow if all edges have distinct colors. In this paper, we consider an edge coloring of K_n by circular distance, and we denote the resulting complete graph by K^●_n. We show that when K^●_n has an even number of vertices, it contains a rainbow perfect matching if and only if n=8k or n=8k+2, where k is a nonnegative integer. In the case of an odd number ...

Effect Of Post-Activation Potentiation On The Force, Power And Rate Of Power And Force Development Of The Upper Limbs In Mixed Martial Arts (Mma) Fighters, Taking Into Account Training Experience, Alan Langer, Angelina Ignatieva, Patricia Fischerova, Magdalena Nitychoruk, Artur Gołaś, Adam Maszczyk

Baltic Journal of Health and Physical Activity

Introduction. The aim of the study is to determine the optimal load for generating the highest value of force, power and the rate of power and force development (RFD and RPD) in the upper limb of mixed martial arts (MMA) fighters with the use of activation and explosive exercises. The training period of MMA players was included in the research. Material and Methods: Twenty-nine MMA fighters participated in the study and were divided into two groups depending on the length of their training period (under and over 5 years). The subjects did 2 ballistic push-ups before the study and after-wards ...

The Effect Of Caffeine On Countermovement Jump Performance In Recreationally Trained Women Habituated To Caffeine, Dawid Gawel, Magdalena Kaszuba, Zuzanna Komarek, Robert Krawczyk, Marta Bichowska, Marcin Jasinski, Robert Trybulski

Baltic Journal of Health and Physical Activity

Introduction. The main goal of this study was to examine the effect of acute intake of 3 mg/kg/body mass (b.m.) of caffeine (CAF) on countermovement jump (CMJ) performance in recreationally trained women habituated to CAF. Material and Methods. 17 healthy recreationally trained women habitually using CAF participated in the study. The experiment followed randomized, cross-over, double-blind design under three different conditions: control test (CONT) or consumed placebo (PLAC) or consumed 3 mg/kg/b.m. of CAF (CAF-3). Each participant performed 2 sets of 2 CMJ. The following variables were recorded: concentric peak velocity (PV), peak power ...

Relationship Between Motor Skills And Various Sailing Skills And Sports Performance – Study Using The Dematel Approach, Jedrzej Charlampowicz

Baltic Journal of Health and Physical Activity

Introduction. The purpose of this paper is to determine the mutual relation between various motor abilities and factors of sailing performance. Material and methods: 25 sailors from the Polish national team in sailing Olympic classes were asked to fill a questionnaire concerning the influence of various motor abilities and sailing performance factors on the result. In total, 5 sailors participated in the study by returning properly filled questionnaires. To determine the relationship between the motor abilities and sailing performance factors, the DEMATEL method has been utilized. Results: In terms of motor abilities, mobility is the most significant factor, and muscle ...

Effects Of A 4-Week Heart Rate Variability Biofeedback Intervention On Psychological And Performance Variables In Student-Athletes: A Pilot Study, Samantha R. Weber, Zachary K. Winkelmann, Eva V. Monsma, Shawn M. Arent, Toni Torres-Mcgehee

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

PURPOSE: To examine the effects of a 4-week biofeedback intervention on coherence, psychological, and performance variables in collegiate student-athletes. METHODS: Thirteen student-athletes were randomly assigned to the intervention (one weekly biofeedback session for 4-weeks) or control group (no sessions). Data were collected at pre and post-intervention using weekly averaged coherence scores, psychological measures for depression, arousal, stress, resiliency, and performance outcome measures. RESULTS: A 3 (Time) x 4 (Week average) repeated measures ANOVA was independently conducted to examine differences between time and weekly coherence average for coherence scores. No significant differences were found for “at rest”, pre, or post-practice coherence ...

The Effects Of Vitamin D Supplementation On Athletic Performance And Injury Prevention, Amani Adeeb Abushamma

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Vitamin D supplementation has numerous effects on athletic performance and plays a significant role in preventing an athlete’s risk of getting injuries. Vitamin D has an impact on numerous physiological functions such as: bone health, muscle function, inflammatory response, and immune function. An athlete’s bone and muscle health are essential for maximum performance and career success. A bone fracture due to vitamin D deficiency can delay an athlete’s training and ultimately inhibit obtaining a collegiate scholarship and/or contract. A cross sectional study found that more than half of athletic trainers did not view 25-hydroxyvitamin D(25 ...

An Infrapatellar Fat Pad Tear In A High School Football Player: A Case Report, Brian D. Seiler

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Objective: To present a clinical case exploring the occurrence and management of a tear to the infrapatellar fat pad IFP of a high school football player. Background: Acute tears to the IFP are rare. Typically, the IFP becomes impinged (i.e., Hoffa’s disease) through a fall, direct knee trauma, or surgical complications, and requires conservative treatment. Treatment: A 15-year-old high school football player reported to the athletic training clinical complaining of right knee discomfort and the inability to fully flex the knee. The patient stated that during a field goal attempt he missed the ball and hyperextended his right ...

The Role Of Reported Affective Symptoms And Anxiety In Recovery Trajectories After Sport-Related Concussion, Bernadette A. D'Alonzo, Abigail C. Bretzin, Douglas J. Wiebe, Ivy League–Big Ten Epidemiology Of Concussion Study Investigators, Arthur C. Maerlender, Cary R. Savage

Center for Brain, Biology and Behavior: Papers & Publications

Background: There is growing awareness and clinical interest in athletes with affective symptoms after sport-related concussion (SRC), as these symptoms may contribute to overall symptoms and represent a modifiable risk factor of longer recovery. However, evidence of their effects on the entire return-to-play (RTP) trajectory, particularly among women and men, is limited.

Purpose/Hypothesis: To examine the relationship between affective symptom reporting and RTP progression after SRC among a cohort of Division 1 student-athletes. We hypothesized that those endorsing affective symptoms, specifically nervous-anxious symptoms, spend more time in RTP progression and recovery.

Study Design: Cohort study; Level of evidence, 3 ...

Age-Dependent White Matter Disruptions After Military Traumatic Brain Injury: Multivariate Analysis Results From Enigma Brain Injury, Heather C. Bouchard, Delin Sun, Emily L. Dennis, Mary R. Newsome, Seth G. Disner, Jeremy Elman, Annelise Silva, Carmen Velez, Andrei Irimia, Nicholas D. Davenport, Scott R. Sponheim, Carol E. Franz, William S. Kremen, Michael J. Coleman, M. Wright Williams, Elbert Geuze, Inga K. Koerte, Martha E. Shenton, Maheen M. Adamson, Raul Coimbra, Gerald Grant, Lori Shutter, Mark S. George, Ross D. Zafonte, Thomas W. Mcallister, Murray B. Stein, Paul M. Thompson, Elisabeth A. Wilde, David F. Tate, Aristeidis Sotiras, Rajendra A. Morey

Center for Brain, Biology and Behavior: Papers & Publications

Mild Traumatic brain injury (mTBI) is a signature wound in military personnel, and repetitive mTBI has been linked to age-related neurogenerative disorders that affect white matter (WM) in the brain. However, findings of injury to specific WM tracts have been variable and inconsistent. This may be due to the heterogeneity of mechanisms, etiology, and comorbid disorders related to mTBI. Non-negative matrix factorization (NMF) is a data-driven approach that detects covarying patterns (components) within high-dimensional data. We applied NMF to diffusion imaging data from military Veterans with and without a self-reported TBI history. NMF identified 12 independent components derived from fractional ...

Effect Of Childhood Developmental Coordination Disorder On Adulthood Physical Activity; Arvo Ylppö Longitudinal Study, Jocelyn L. K. Tan, Anna Mari Mari Ylä-Kojola, Johan G. Eriksson, Minna K. Salonen, Niko Wasenius, Nicolas H. Hart, Paola Chivers, Timo Rantalainen, Aulikki Lano, Harri Piitulainen

Research outputs 2022 to 2026

Individuals at risk of Developmental Coordination Disorder (DCD) have low levels of physical activity in childhood due to impaired motor competence; however, physical activity levels in adulthood have not been established. This study sought to determine the impact of DCD risk on physical activity levels in adults using accelerometry measurement. Participants (n = 656) from the Arvo Ylppö Longitudinal Study cohort had their motor competence assessed at the age of five years, and their physical activity quantified via device assessment at the age of 25 years. Between group differences were assessed to differentiate physical activity measures for individuals based on DCD ...

Beta-Alanine Supplementation And Anaerobic Performance In Highly Trained Judo Athletes, Mateusz Halz, Magdalena Kaszuba, Jonatan Helbin, Sara Krzysztofik, Aleksandra Suchanecka, Adam Zając

Baltic Journal of Health and Physical Activity

Introduction. Previous studies have shown that several weeks of beta-alanine (BA) supplementation increases anaerobic work capacity and decreases muscular fatigue, but limited research was conducted on elite martial arts athletes. Therefore, the purpose of this study was to investigate the effect of chronic BA supplementation on high-intensity intermittent upper and lower-body performance in highly-trained judo athletes. Material and Methods: Sixteen elite judo athletes (21.8 ± 2.5 years old) were randomly assigned to receive either BA (4 g/d over the first 2 weeks and 6 g/d in the last 2 weeks) or placebo for 4 weeks. Before and ...

Effectiveness Of Short-Term Heat Acclimation On Intermittent Sprint Performance In The Heat With Moderately Trained Males, Andrew T. Garrett, Matt Birkett, Damien O. Gleadall-Siddall, Rachel Burke, James Bray, Fiona Nation

Journal of Human Performance in Extreme Environments

Purpose: Effectiveness of short-term heat acclimation (STHA), over 5-days (permissive dehydration), on intermittent heat stress test (HST) with males. Methods: Ten, moderately-trained, males (mean [SD]; age 25.6 [8.9] y; stature 180.7 [5.6] cm; body mass 83.2 [10.8] kg; and 45.3 [6.5] mL^.kg^-1.min^-1) participated. The HST was 9 x 5min (45-min) of intermittent exercise based on professional soccer players. One week apart, HST1 vs HST (11.0°C; 50%RH), as a reliability trial and HST3 in 31.0°C; 50%RH were completed. Then 90 min dehydration, STHA ...

The Impact Of Sleep On Athletic Performance: A Review Of The Literature, Rylan J. Pratt

Honors Thesis

This paper reviewed the literature regarding sleep and athletic performance, specifically identifying the problem of sleep debt in student athletes, the effects of sleep debt, and what factors negatively influence sleep, along with how to improve sleep. The literature revealed that it is common for athletes to not get adequate sleep. Sleep debt can have psychomotor and physiological effects on the body, which decreases optimal athletic performance. The many factors that negatively impact sleep include high intensity training sessions, travel, sleep disturbances, caffeine and/or alcohol consumption, and pre-competition anxiety. Recommendations for athletes that are struggling to achieve adequate sleep ...

Effects Of Caffeine On Agility Tests On One Women's Collegiate Volleyball Team, Sarah Monnier, Erika Smith-Goodwin, Eric Dick

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE
The purpose of this study was to investigate the effects of caffeine on agility tests (3-step approach,2-hand vertical leap,5-10-5 drill) on a women’s collegiate volleyball team at one Division III institution.

MAIN OUTCOME MEASUREMENT
Vertical jump measuring device measured 3-step approach and 2-hand vertical leap measurements. A stopwatch measured the 5-10-5 drill.

Effects Of Rock Steady Boxing On Parkinsons Patients, Hannah Hall, Jennifer Walker, Erika Smith-Goodwin

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE
Rock Steady Boxing’s (non-profit organization) program goal is improving Parkinson’s patients’ quality of life through a non-contact, boxing-based fitness class. The purpose of this study was to investigate the effects of Parkinson’s patients perceived improvement on proprioception from one hospital-based Rock Steady Boxing Program. The program was led by athletic trainers and physical therapists.

MAIN.OUTCOME.MEASURE
Likert scale survey was used with one fill in the blank question.