Sports Sciences Commons^™

The Role Of Pennation Angle And Architectural Gearing To Rate Of Force Development In Dynamic And Isometric Muscle Contractions, Bas Van Hooren, Per Aagaard, Andrea Monte, Anthony J. Blazevich

Research outputs 2022 to 2026

Background: Associations between muscle architecture and rate of force development (RFD) have been largely studied during fixed-end (isometric) contractions. Fixed-end contractions may, however, limit muscle shape changes and thus alter the relationship between muscle architecture an RFD. Aim: We compared the correlation between muscle architecture and architectural gearing and knee extensor RFD when assessed during dynamic versus fixed-end contractions. Methods: Twenty-two recreationally active male runners performed dynamic knee extensions at constant acceleration (2000°s−2) and isometric contractions at a fixed knee joint angle (fixed-end contractions). Torque, RFD, vastus lateralis muscle thickness, and fascicle dynamics were compared during 0–75 and 75–150 ms …

Validity Of Apple Watch, Garmin Forerunner® 935 And Geneactiv For Estimating Energy Expenditure During Close Quarter Battle Training In Special Forces Soldiers, Angela Uphill, Kristina L. Kendall, Alison Fogarty, Stuart Guppy, Hannah Brown, Travis Zomer, Simon Parker, G. Gregory Haff

Research outputs 2022 to 2026

The purpose of this study was to investigate the validity of three wrist-worn devices for estimating energy expenditure (EE) and heart rate (HR) during close “Close Quarter Battle” (CQB). Fifty male soldiers (mean ± SD: age 30.9 ± 4.6 years, height: 1.81 ± 0.64 m and body mass 87.3 ± 7.7 kg) wore three activity monitors (Apple Watch 5, Garmin Forerunner® 935 and GENEActiv accelerometer), a Metamax 3B metabolic cart and a Polar chest strap, whilst conducting a CQB training activity (duration: 26.6 ± 5.0 min). EE and HR data from each test device were compared against criterion measures using …

Scs 6th Annual Meeting—Eevfa—11th International Congress Of Biochemistry And Physiology Of Exercise, Athens, Greece, 2023, Pedro E. Alcaraz, Elena Marín-Cascales, Anthony J. Blazevich, Tomás T. Freitas, Olyvia Donti, Konstantinos Spyrou, Gregory C. Bogdanis

Research outputs 2022 to 2026

On behalf of the Strength and Conditioning Society (SCS) and the Hellenic Society of Biochemistry and Exercise Physiology (EEVFA), we are pleased to present the abstracts of the SCS 6th Annual Meeting and EEVFA—11th International Congress of Biochemistry and Physiology of Exercise. The event was held at the Hellenic Olympic Committee headquarters in Athens, Greece, on 19–22 October 2023, and comprised several invited sessions from international and national speakers on a variety of topics related to biochemistry and exercise physiology, strength and conditioning practices and their application to health, injury prevention and sports performance. These included strength training in high-performance …

Moderators Of Resistance Training Effects In Healthy Young Women: A Systematic Review And Meta-Analysis, Talita Molinari, Régis Radaelli, Anderson Rech, Clarissa M. Brusco, Anna M. Markarian, Pedro Lopez

Research outputs 2022 to 2026

Molinari, T, Radaelli, R, Rech, A, Brusco, CM, Markarian, AM, and Lopez, P. Moderators of resistance training effects in healthy young women: A systematic review and meta-analysis. J Strength Cond Res 38(4): 804-814, 2024 - To systematically review and analyze the effects of resistance-based exercise programs and potential moderators of change in body fat percentage, whole-body fat and lean mass, muscle hypertrophy, muscle strength, and muscle power/rapid force in healthy young women (between 18 and 35 years). A systematic search was undertaken in 7 databases from inception to May 2022. Eligible randomized controlled trials examined the effects of resistance-based exercise …

What Impact Have The Ioc Medical Consensus Statements Made On Athlete Health? A Survey Of Medical Commissions From National Olympic/ Paralympic Committees And International Sports Federations, Lauren V. Fortington, Marelise Badenhorst, Wayne Derman, Carolyn Emery, Kati Pasanen, Martin Schwellnus, Evert Verhagen, Caroline F. Finch

Research outputs 2022 to 2026

Background The International Olympic Committee (IOC) Medical and Scientific Commission has supported collating and sharing evidence globally by developing sports medicine consensus statements (‘Statements’'). Publishing the Statements requires substantial resources that must be balanced by use and impact on policy and practice. This study aimed to gain a better understanding of awareness and uptake of the Statements globally through a survey of the National Olympic Committees (NOC), National Paralympic Committees (NPC) and International Federations (IF). Method A cross-sectional survey of medical commission representatives from NOCs/NPCs/IFs. A structured questionnaire was distributed through the IOC head office, informed by prior research. Questions …

Decline In Muscle Strength And Physical Function After Fracture In Men - The Prospective Strambo Study, Paweł Szulc, Joshua R. Lewis, Roland Chapurlat

Research outputs 2022 to 2026

Studies on muscle strength and physical function after fracture are focused on short follow-ups and adjacent anatomical region. We compared loss of muscle strength and physical function in men after fracture with normal ageing-related decline. In 823 men aged 60-87, measurements of grip strength and clinical tests (chair stands, balance) were performed every 4 years for 12 years. In 155 men with incident fracture, we compared the status after vs. before the fracture. In men without fracture (controls), we compared the status on the first follow-up (4 years) vs. baseline. In men with fracture, grip strength decreased more than in …

Effects Of Far-Infrared Radiation Lamp Therapy On Recovery From A Simulated Soccer-Match In Elite Female Soccer Players, Wei-Chin Tseng, Kazunori Nosaka, Tai-Ying Chou, Glyn Howatson, Trevor C. Chen

Research outputs 2022 to 2026

We investigated the effects of far-infrared radiation (FIR) lamp therapy on changes in muscle damage and performance parameters following six sets of 15-min Loughborough intermittent shuttle test (LIST), a simulated soccer match. Twenty-four elite female soccer players (20–24 y) were assigned into FIR or sham treatment group (n = 12/group). The participants received a 60-min FIR or sham treatment (30 min per muscle) over knee extensors (KE) and flexors (KF) at 2, 25, 49, 73, and 97 h post-LIST. Maximal voluntary isometric contraction (MVC) torque and muscle soreness of the KE and KF, plasma creatine kinase (CK) activity as muscle …

Physical Activity And Amyloid Beta In Middle-Aged And Older Adults: A Systematic Review And Meta-Analysis, María Rodriguez-Ayllon, Patricio Solis-Urra, Cristina Arroyo-Ávila, Miriam Álvarez-Ortega, Pablo Molina-García, Cristina Molina-Hidalgo, Manuel Gómez-Río, Belinda Brown, Kirk I. Erickson, Irene Esteban-Cornejo

Research outputs 2022 to 2026

Background: One of the pathological hallmarks distinguishing Alzheimer's disease from other dementias is the accumulation of amyloid beta (A ). Higher physical activity is associated with decreased dementia risk, and one potential path could be through A levels modulation. We aimed to explore the relationship between physical activity and A in middle-aged and older adults. Methods: A systematic search of PubMed, Web of Science, PsycINFO, Cochrane Central Register of Controlled Trials, and SPORTDiscus was performed from inception to April 28, 2022. Studies were eligible if they included physical activity and A data in adults aged 45 years or older. Multi-level …

The Use Of Free Weight Squats In Sports: A Narrative Review—Terminology And Biomechanics, Michael H. Stone, W. Guy Hornsby, Satoshi Mizuguchi, Kimitake Sato, Daniel Gahreman, Marco Duca, Kevin M. Carroll, Michael W. Ramsey, Margaret E. Stone, Kyle C. Pierce, G. Gregory Haff

Research outputs 2022 to 2026

There is substantial evidence indicating that increased maximum strength as a result of training with squats, particularly full and parallel squats, is associated with superior athletic capabilities, such as sprinting, jumping and agility. Although full and parallel squats have been strongly associated with sport performance, there is also some evidence that the use of partial squats may provide angle specific adaptations that are likely advantageous for specific sporting activities. Partial squats may be particularly advantageous when trained in conjunction with full or parallel squats, as this practice results in a greater training effect. There is a paucity of evidence that …

Dropout From Exercise Trials Among Cancer Survivors—An Individual Patient Data Meta-Analysis From The Polaris Study, Benedikte Western, Andreas Ivarsson, Ingvild Vistad, Ingrid Demmelmaier, Neil K. Aaronson, Gillian Radcliffe, Marc Van Beurden, Martin Bohus, Kerry S. Courneya, Amanda J. Daley, Daniel A. Galvão, Rachel Garrod, Martine M. Goedendorp, Kathleen A. Griffith, Wim H. Van Harten, Sandi C. Hayes, Fernando Herrero-Roman, Anouk E. Hiensch, Melinda L. Irwin, Erica James, Marlou-Floor Kenkhuis, Marie J. Kersten, Hans Knoop, Alejandro Lucia, Anne M. May, Alex Mcconnachie, Willem Van Mechelen, Nanette Mutrie, Robert U. Newton, Frans Nollet, Hester S. Oldenburg, Ron Plotnikoff, Martina E. Schmidt, Katie H. Schmitz, Karl-Heinz Schulz, Camille E. Short, Gabe S. Sonke, Karen Steindorf, Martijn M. Stuiver, Dennis R. Taaffe, Lene Thorsen, Miranda J. Velthuis, Jennifer Wenzel, Kerri M. Winters-Stone, Joachim Wiskemann, Sveinung Berntsen, Laurien M. Buffart

Research outputs 2022 to 2026

Introduction: The number of randomized controlled trials (RCTs) investigating the effects of exercise among cancer survivors has increased in recent years; however, participants dropping out of the trials are rarely described. The objective of the present study was to assess which combinations of participant and exercise program characteristics were associated with dropout from the exercise arms of RCTs among cancer survivors. Methods: This study used data collected in the Predicting OptimaL cAncer RehabIlitation and Supportive care (POLARIS) study, an international database of RCTs investigating the effects of exercise among cancer survivors. Thirty-four exercise trials, with a total of 2467 patients …

The Role Of Diet And Gut Microbiota In Alzheimer’S Disease, D. M.Sithara Dissanayaka, Vijay Jayasena, Stephanie R. Rainey-Smith, Ralph N. Martins, W. M.A.D.Binosha Fernando

Research outputs 2022 to 2026

Alzheimer’s disease (AD), the most prevalent form of dementia, is characterized by the accumulation of amyloid-beta (A ) plaques and hyperphosphorylated tau tangles. Currently, Alzheimer’s disease (AD) impacts 50 million individuals, with projections anticipating an increase to 152 million by the year 2050. Despite the increasing global prevalence of AD, its underlying pathology remains poorly understood, posing challenges for early diagnosis and treatment. Recent research suggests a link between gut dysbiosis and the aggregation of A , the development of tau proteins, and the occurrence of neuroinflammation and oxidative stress are associated with AD. However, investigations into the gut–brain axis …

Relative Strength Explains The Differences In Multi-Joint Rapid Force Production Between Sexes, Paul Comfort, John J. Mcmahon, Jason P. Lake, Nicholas J. Ripley, N. Travis Triplett, G. Gregory Haff

Research outputs 2022 to 2026

The primary aim of this study was to determine whether relative strength explains the differences in the rapid force production (force developed during first 150-, 200-, and 250 ms) of females and males, and to evaluate the relationships between peak force and rapid force production. Sixty-three team sport athletes (females: n = 25, age = 21.5 ± 1.3 years, stature = 166 ± 5 cm, body mass = 60.65 ± 10.04 kg; males: n = 38, age = 21.9 ± 1.1 years, stature = 178 ± 7 cm, body mass = 76.55 ± 12.88 kg) performed a series of isometric …

Athlete Monitoring Perspectives Of Sports Coaches And Support Staff: A Scoping Review, Wouter P. Timmerman, Chris R. Abbiss, Nathan G. Lawler, Mandy Stanley, Annette J. Raynor

Research outputs 2022 to 2026

Objectives: To map and summarise the sports coaches’ and support staff's perspectives on athlete monitoring to explore the breadth of literature, identify knowledge gaps and inform future research. Design: Scoping review based on the Joanna Briggs Institute (JBI) methodology. Methods: SPORTDiscus, MEDLINE, APA PsycInfo, and Embase databases were searched in English until 6 September 2022. The inclusion criteria were (1) coach(es) and/or support staff were explicitly questioned about their knowledge, perceptions, understanding, opinions, and/or applied practice of athlete monitoring; (2) results could be directly attributed to coach(es) and/or support staff; (3) primary research projects that are available as full-text. Exclusion …

Effects Of Eccentric Exercise Of The Extensors On Eccentric Exercise-Induced Muscle Damage Of The Flexors In Limbs, Trevor C. Chen, Wei Chin Tseng, Hsing Yu Kang, Chuan Wei Chan, Hsin Lian Chen, Kazunori Nosaka

Research outputs 2022 to 2026

Introduction:

We tested the hypothesis that muscle damage protection effect would be induced by its antagonist muscle eccentric exercise.

Methods:

Sedentary young (20-28y) men were randomly assigned into six groups; three groups each for arm or leg exercise group (n=12/group). One group performed two bouts of 30 maximal eccentric contractions (30MaxEC) of the elbow flexors (EF) or 60 maximal eccentric contractions (60MaxEC) of the knee flexors (KF) using a different arm (contra-EF-EF) or leg (contra-KF-KF) between bouts. The other two groups performed 30MaxEC of the elbow extensors (EE) or 60MaxEC of the knee extensors (KE) first followed by the 30MaxEC …

A Systematic Review And Network Meta-Analysis On The Effectiveness Of Exercise-Based Interventions For Reducing The Injury Incidence In Youth Team-Sport Players. Part 1: An Analysis By Classical Training Components, Francisco Javier Robles-Palazón, Desirée Blázquez-Rincón, Alejandro López-Valenciano, Paul Comfort, José Antonio López-López, Francisco Ayala

Research outputs 2022 to 2026

Objectives: The primary purposes were (a) to estimate the pooled effects of injury prevention programs (IPPs) on reducing overall and some specific body regions (lower extremity, thigh, knee, and ankle) injury incidence rates (IIRs) and (b) to compare the effects of single- and multi-component IPPs on mitigating injury risk in youth team sport athletes. A secondary objective was to explore the individual effects of different components on these IIRs. Materials and methods: Searches were performed up to 15 January 2024 in PubMed, Web of Science, SPORTDiscus, and Cochrane Library. Eligible criteria were: exercise-based interventions evaluated against a control group, overall …

A 16-Week Progressive Exercise Training Intervention In Treatment-Naïve Chronic Lymphocytic Leukaemia: A Randomised-Controlled Pilot Study, Frankie F. Brown, Rebecca Oliver, Rachel Eddy, Adam J. Causer, Annabelle Emery, Harrison D. Collier-Bain, David Dutton, Josephine Crowe, Daniel Augustine, John Graby, Daniel Rees, Daniela Rothschild-Rodriguez, Oliver J. Peacock, Sally Moore, James Murray, James E. Turner, John P. Campbell

Research outputs 2022 to 2026

Background: Chronic lymphocytic leukaemia (CLL) typically presents with asymptomatic, early-stage disease that is monitored until disease progression (‘treatment-naïve’ CLL). The objective of this pilot study was to assess the feasibility and preliminary safety of an exercise program in treatment-naïve CLL. We also sought to preliminarily assess the impact of the exercise program on disease activity, as it has been proposed that exercise training may reduce disease outgrowth in treatment-naïve CLL. Methods: A total of 40 treatment-naïve CLL patients were recruited into this randomised-controlled pilot study, and after screening, n = 28 were randomised into a 16-week, home-based, partially supervised, personalised, …

Exploratory Analysis Of Fight-Ending Punches In The Ultimate Fighting Championship™ Mixed Martial Arts Promotion, Oliver R. Barley, Colin S. Doherty, Mark Scanlan, Liam C. Tapsell, Corey Wilson, Julian Giustiniano, Matthew G. Plush, Shayne Vial

Research outputs 2022 to 2026

Punching is a crucial element of mixed martial arts (MMA), often leading to knockouts (KO) or technical knockouts (TKOs). This study explored the relative foot positions of athletes, their stances, punch type executed, and the reliability of these variables to provide insights into effective punch application in MMA. We retrospectively examined MMA contests from the Ultimate Fighting Championship that ended via KO/TKO (2020 to 2022). Data were sourced from publicly available videos on the internet. Three analysts, each with at least three years of experience in striking combat sports and competitive MMA, conducted observations independently. Only critical strikes where all …

In Vivo Human Medial Gastrocnemius Fascicle Behaviour And Belly Gear During Submaximal Eccentric Contractions Are Not Affected By Concentric Fatiguing Exercise, Matheus Daros Pinto, Kazunori Nosaka, Anthony J. Blazevich

Research outputs 2022 to 2026

Changes in muscle geometry and belly gearing during eccentric contractions influence fibre strain and susceptibility to muscle damage. They are modulated by the interaction between connective tissues and intracellular-intrafascicular fluid pressures and external pressures from neighbouring structures. Fatiguing exercise triggers fluid shifts (muscle swelling) and muscle activation changes that may influence these modulators. Our purpose was to measure medial gastrocnemius (MG) geometric changes in vivo during eccentric contractions before and after maximal concentric muscle work to test the hypothesis that fatigue would reduce fascicle rotation and muscle gear and provoke greater fascicle strain. Submaximal eccentric plantar flexor contractions at 40% …

Best Practice Recommendations For Coaching Gymnasts To Avoid Burnout And Reframe Performance Anxiety, Clare A. Mccall

Theses: Doctorates and Masters

Gymnastics is deemed a psychologically demanding sport, with associated risk factors of burnout and performance anxiety. To date, relatively little research has explored the specific goal and perfectionistic processes of gymnasts, despite these risks. This body of work identified the specific goal-related constructs and perfectionistic orientation of young athletes and examined how these associated with burnout and performance anxiety. It comprised of two studies with a mixed methods design. The first study aimed to systematically review literature investigating how goal-related constructs and perfectionism associate with burnout and performance anxiety in young athletes. This review focused on summer and winter Olympic …

The Physiological And Performance Consequences Of The Australian Special Forces Selection Course, Angela Uphill

Theses: Doctorates and Masters

Special Forces (SF) soldiers are the most elite element of military forces, who have undergone rigorous training in order to prepare them for a wide array of specialised missions. In Australia, entry into the SF is determined through the highly competitive SF Selection Course (SF-SC), which is a gruelling program involving extreme physical demands, psychological stress, and restricted access to sleep and nutrition. The stressors involved in arduous military training events such as the SF-SC can result in significant losses of fat mass and lean mass, disruption to hormonal homeostasis, and significant decreases in neuromuscular capacity, which can potentially increase …

Resistance Training Effects On Pubertal Children With A Risk Of Developing Pediatric Dynapenia, Cassio V. Victora Ruas, Sébastien Ratel, Kazunori Nosaka, Gabriela Castellano, Ronei S. Pinto

Research outputs 2022 to 2026

Purpose: Many modern-day children are at risk of pediatric dynapenia (muscle weakness). We examined the effects of a 12-week resistance training (RT) program on neuromuscular function and body composition parameters in pubertal children with a risk of dynapenia. Methods: Twelve children (13.4 ± 0.9 y) with dynapenia performed a progressive RT program consisting of knee extension and flexion, bench press, abdominal crunch, back extension, lateral pull-down, elbow flexion, and upright row (1–2 sets of 10–15 repetitions/exercise) twice/week for 12 weeks. Outcome measures included one-repetition maximum (1-RM) strength, maximal voluntary isometric contraction (MVIC) torque, rate of torque development (RTD), electromyographic (EMG) …

Variations In Strength-Speed-Power Performance Across The Season: Do True Changes Occur In Elite Rugby Players?, Irineu Loturco, Chris Bishop, Santiago Zabaloy, Túlio B. M. A. Moura, Maurício S. Ramos, Lucas A. Pereira, Michael R. Mcguigan

Research outputs 2022 to 2026

This study aimed to determine, through the use of a highly sensitive statistical tool, whether real changes in performance were present; and compare the rates of meaningful variations in strength, speed, and power parameters at different time-points during the competitive season in national team rugby players. Thirty-two players were assessed 5 times across the season using the following tests: squat jump and countermovement jump tests; 30-m sprint velocity; and one-repetition maximum (1RM) in the half-squat and bench-press exercises. A repeated-measures analysis of variance was conducted to test for differences between successive time-points. Individual coefficients of variation values were used to …

Changes In Deadlift Six Repetition Maximum, Countermovement Jump Performance, Barbell Velocity, And Perceived Exertion Over The Duration Of A Microcycle, Stuart N. Guppy, Tsuyoshi Nagatani, Wayne C. K. Poon, Kristina L. Kendall, Jason P. Lake, G. Gregory Haff

Research outputs 2022 to 2026

The primary aim of this study was to investigate the stability of the six-repetition maximum (6RM) deadlift over the length of a five-day microcycle and whether the fatigue induced by maximal effort testing detrimentally impacted preparedness. Twelve participants performed four testing sessions, comprising a one-repetition maximum test and three 6RM tests separated by 48 hours. Countermovement jumps were performed before each testing session, and barbell velocity was measured during each warm-up set to assess changes in preparedness. The 6RM deadlift was not statistically different between any of the testing sessions (p  =  .056; η_p²  =  0.251). Similarly, …

Resistance Exercise Minimal Dose Strategies For Increasing Muscle Strength In The General Population: An Overview, James L. Nuzzo, Matheus Daros Pinto, Benjamin J. C. Kirk, Kazunori Nosaka

Research outputs 2022 to 2026

Many individuals do not participate in resistance exercise, with perceived lack of time being a key barrier. Minimal dose strategies, which generally reduce weekly exercise volumes to less than recommended guidelines, might improve muscle strength with minimal time investment. However, minimal dose strategies and their effects on muscle strength are still unclear. Here our aims are to define and characterize minimal dose resistance exercise strategies and summarize their effects on muscle strength in individuals who are not currently engaged in resistance exercise. The minimal dose strategies overviewed were: “Weekend Warrior,” single-set resistance exercise, resistance exercise “snacking,” practicing the strength test, …

Error In Jump Height Estimation Using The Flight Time Method: Simulation Of The Effect Of Ankle Position Between Takeoff And Landing, Carlos Gonçalves, Roberto Baptista, James Tufano, Anthony J. Blazevich, Amilton Vieira

Research outputs 2022 to 2026

During vertical jump evaluations in which jump height is estimated from flight time (FT), the jumper must maintain the same body posture between vertical takeoff and landing. As maintaining identical posture is rare during takeoff and landing between different jump attempts and in different individuals, we simulated the effect of changes in ankle position from takeoff to landing in vertical jumping to determine the range of errors that might occur in real-life scenarios. Our simulations account for changes in center of mass position during takeoff and landing, changes in ankle position, different subject statures (1.44–1.98 m), and poor to above-average …

Fight-Pd: A Feasibility Study Of Periodized Boxing Training For Parkinson Disease, David J. Blacker, Raimondo Fazio, Claire Tucak, Phillip Beranek, Connor Pollard, Tegan Shelley, Sanathraj Rajandran, Georgina Holbeche, Mitchell Turner, Travis Cruickshank

Research outputs 2022 to 2026

Background: Boxing training has become a popular form of exercise for people with Parkinson disease (PD). There is a dearth of high-quality feasibility, safety, and efficacy data on boxing training for PD. Feasibility of Instituting Graduated High-intensity Training (FIGHT-PD) aimed to examine these features in a periodized boxing training program featuring high-intensity physical and cognitive demands. Objective: To conduct a feasibility study, aiming to address deficiencies in the current knowledge base and to provide data for future studies. Design: Single-arm, open-label feasibility. Setting: University department and medical research institute. Participants: Ten people with early stage PD without contraindications to intense …

The Stability Of The Deadlift Three Repetition Maximum, Stuart N. Guppy, Tsuyoshi Nagatani, Wayne C. K. Poon, Kristina L. Kendall, Jason P. Lake, G. Gregory Haff

Research outputs 2022 to 2026

This study investigated the stability of three repetition maximum (3RM) strength during the deadlift. Eleven participants performed four testing sessions comprising a one repetition maximum test and 3RM tests separated by 48 h. Preparedness was assessed before each testing session using countermovement jumps and by measuring barbell velocity during each set of deadlifts. Trivial statistically significant differences were determined for the 3RM between T1 and both T2 (p = 0.012; ES [95% CI] = −0.1 [−0.58, 0.41]) and T3 (p = 0.027; ES [95% CI] = −0.09 [−0.57, −0.43]). No significant differences were noted between T2 and T3 …

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 …

Recovery From Sport-Induced Muscle Damage In Relation To Match-Intervals In Major Events, Kazunori Nosaka, Trevor C. Chen

Research outputs 2022 to 2026

Muscle damage could affect the next match performance in sports when the time to recover from a previous match is shorter. We examined the interval between matches in nine team sports (e.g., soccer, rugby, field hockey, basketball, volleyball, baseball) and two racket sports (badminton, tennis) in World Cups held in 2022-2023, 2020 Tokyo Olympic Games and Gland Slam in 2023. We then performed narrative review using three electronic databases (PubMed, Scopus, Google Scholar) to get information about muscle damage and recovery in the 11 sports, and discussed whether the intervals in the events would be enough for athletes. We found …

Examining The Effects Of Dynamic And Isometric Resistance Training On Knee Joint Kinetics During Unplanned Sidesteps In Elite Female Athletes, Daniel Kadlec, Matthew J. Jordan, Jacqueline Alderson, Sophia Nimphius

Research outputs 2022 to 2026

Kadlec, D, Jordan, MJ, Alderson, J, and Nimphius, S. Examining the effects of dynamic and isometric resistance training on knee joint kinetics during unplanned sidesteps in elite female athletes. J Strength Cond Res XX(X): 000-000, 2024 - The purpose of this study was to examine the effects of a 4-week block of isometric (isometricRT) and dynamic resistance training (dynamicRT) on kinetic variables associated with anterior cruciate ligament (ACL) injury risk during unplanned sidesteps in elite female athletes. Twenty-one elite female athletes competing for a women's international rugby union team were recruited with 15 (n = 15; age: 23.4 ± 4.7 …