Sports Sciences Commons^™

Assessing The Relationship Between Perceived Psychological And Physical Pain In Adults With Orthopedic Pain, Daniel C. Karimi Dehkordi

Honors Undergraduate Theses

Suicide remains a public health concern in the U.S., particularly among individuals experiencing chronic pain and psychological distress. This cross-sectional study investigated the relationship between perceived physical and psychological pain in 41 adults with chronic orthopedic conditions. The relationship between other risk and protective factors and perceived levels of pain distress was also examined. Results showed a significant positive correlation between psychological distress and physical pain (r(39) = 0.388, p < .05) and psychological distress and depressive/anxiety symptoms (r (39) = 0.477, p < .01). Psychological distress was moderately associated with feelings of hopelessness (r (39) = 0.403, p < .01), however, the relationship between physical pain and hopelessness was weak and nonsignificant (r (39) = -0.06, p = .71). Contrary to expectations, emotional support did not buffer the effects of psychological distress (r (39) = 0.07, p = 0.66). Mediational analysis confirmed that emotional support did not influence the relationship between physical pain and psychological distress (Beta (β) = -0.969, p = 0.572; Sobel Z = 0.5598, p = 0.575). Age was not correlated with psychological distress (r (39) = -0.24, p = 0.13) or mental health symptoms (r (39) = -0.05, p = .77). While there was no significant difference across sex, males reported higher mental health symptomatology and psychological distress scores than female counterparts. These findings underscore the direct impact of physical pain on psychological distress and challenge assumptions about the protective role of social support. The study highlights the need for integrated, multidisciplinary interventions targeting both physical and psychological pain to mitigate suicide risk among individuals with chronic orthopedic conditions. Future research should iii explore alternative support mechanisms and resilience-building strategies to address the complex interplay of pain, distress, and suicidality.

Isapa 2025: Program Guide, Catherine Carty, Gerard Masdeu Yelamos

Publications

ISAPA 2025 is a landmark international event that brings together global leaders, researchers, practitioners, and advocates in Adapted Physical Activity to ignite systemic change under the unifying theme “Shifting the Dial: From Awareness to Transformation.” Hosted in Kerry, Ireland, under the patronage of UNESCO, the symposium integrates five major events into one dynamic platform.

The program reflects IFAPA’s mission to advance inclusion, research, professional excellence, and international cooperation, while also contributing meaningfully to the implementation of global frameworks such as the UN Convention on the Rights of Persons with Disabilities (CRPD), the Sustainable Development Goals (SDGs), the Paris 2024 Call …

Effects Of Multi-Ingredient Protein Supplementation Combined With Exercise Intervention On Body Composition And Muscle Fitness In Healthy Women: A Systematic Review With Multilevel Meta-Analysis, Chengyu Zhou, Muen Qiu, Zhuo Zeng, Qi Xie, Kai Xu, Henghao Yan, Bo Wang, Bopeng Qiu, Guoxin Shi

Research outputs 2022 to 2026

Objectives: This meta-analysis investigated whether multi-ingredient protein supplements (MIPS) combined with exercise improve body composition and muscle fitness in women. It also examined how participant characteristics, training protocols, and supplementation strategies might influence these outcomes. Methods: A systematic search of five electronic databases was conducted through February 2025 to identify randomized controlled trials evaluating the effects of MIPS combined with exercise training on body composition and muscle-related outcomes in women. A multilevel meta-analysis was performed to pool effect sizes, reported as standardized mean differences (Hedges’ g), with heterogeneity assessed through predefined subgroup analyses. Results: Nine randomized controlled trials involving 408 …

The Acute Effects Of Caffeine, Creatine, And Carbohydrate Mouth Rinse Combined With Conditioning Activity On Subsequent Sports Performance: A Systematic Review And Bayesian Meta-Analysis, Yanfeng Li, Bopeng Qiu, Hongyan Kuai, Kongyun Huang, Hengxian Liu, Mingyang Zhang, Mingyue Yin, Yilin Zhang, Hengzhi Deng, Yuming Zhong, Hao Kong, Jun Chen, Kai Xu

Research outputs 2022 to 2026

Background: Post-activation performance enhancement (PAPE) refers to the acute improvement in sports performance following a conditioning activity (CA), commonly used in warm-up protocols and complex training. While CA alone has demonstrated performance benefits, the effects of combining CA-induced PAPE with supplements (e.g., caffeine, creatine, or carbohydrate mouth rinse) remain unclear. Objectives: This study was to (i) assess the effects of PAPE combined with supplements on sports performance and fatigue resistance compared to PAPE + placebo, warm-up + supplements, or warm-up alone, and (ii) synthesize direct and indirect evidence on performance outcomes using network meta-analysis. Methods: Searches were conducted across three …

Neuromuscular Characteristics Of Eccentric, Concentric And Isometric Contractions Of The Knee Extensors, Cassio V. Ruas, Janet L. Taylor, Christopher Latella, G. Gregory Haff, Kazunori Nosaka

Research outputs 2022 to 2026

Purpose: We compared voluntary drive and corticospinal responses during eccentric (ECC), isometric (ISOM) and concentric (CON) muscle contractions to shed light on neurophysiological mechanisms underpinning the lower voluntary drive in a greater force production in ECC than other contractions.

Methods: Sixteen participants (20–33 years) performed ISOM and isokinetic (30°/s) CON and ECC knee extensor contractions (110°–40° knee flexion) in which electromyographic activity (EMG) was recorded from vastus lateralis. Voluntary activation (VA) was measured during ISOM, CON and ECC maximal voluntary contractions (MVCs). Transcranial magnetic stimulation elicited motor-evoked potentials (MEPs) and corticospinal silent periods (CSP) during MVCs and submaximal (30%) contractions, …

Practices And Perceptions In Hamstring Training For Injury Risk Mitigation: A Survey-Based Mixed-Methods Analysis, Steven Ross, Nicholas J. Ripley, John J. Mcmahon, Paul Comfort

Research outputs 2022 to 2026

In this study, the practices and perceptions of sport and exercise practitioners regarding hamstring training for injury risk mitigation were investigated. Hamstring strain injuries (HSIs) remain a prevalent issue across sports, despite extensive research. An anonymous survey was conducted to assess how practitioners integrate evidence-based strategies, such as the Nordic hamstring exercise (NHE) and high-speed running (HSR), into their training programmes. The survey included both fixed-response and open-ended questions, enabling a mixed-methods analysis of training approaches. A total of 47 practitioners responded, revealing that most incorporate the NHE and HSR into both in-season and off-season training. However, there were notable …

Dissemination And Implementation Of Injury Prevention Interventions: A Scoping Review For The Female, Woman And Girl Athlete Injury Prevention (Fair) Consensus, Brooke E. Patterson, Carly D. Mckay, Meghan L. Critchley, Destiny Lutz, Sallie M. Cowan, Nicholas Kolesky, Vanda White, Allison M. Ezzat, Andrew G. Ross, William M. Adams, Eva Ageberg, Clare L. Ardern, Marelise Badenhorst, Molly Coventry, Marc Olivier Dubé, Stacey Emmonds, Libby J. Gracias, K. Alix Hayden, Hanna Lindblom, Merete Møller, Christine Holm Moseid, Nancy Harrington, Dai Sugimoto, Evert Verhagen, Kate K. Yung, Phathokuhle C. Zondi

Research outputs 2022 to 2026

Objective: To synthesise evidence related to the dissemination and implementation (D&I) of injury prevention interventions for female, woman and/or girl (female/woman/girl) athletes. Design Scoping review. Data sources MEDLINE, APA PsycInfo, Cochrane Databases for Systematic Review, Cochrane Central Register for Controlled Trials Registry, EMBASE, CINAHL, SPORTDiscus, ERIC, ProQuest Dissertation and Theses Global. Eligibility Primary research including ≥25% female/woman/girl athletes of any age or people working with them (eg, coaches), participating in sports competition and/or performance, were eligible. Papers reporting D&I outcomes (eg, coach knowledge, adoption and maintenance) related to an injury prevention intervention and/or a factor (eg, coach beliefs) associated with …

Cocreating A Programme To Prevent Injuries And Improve Performance In Australian Police Force Recruits: A Study Protocol, Myles C. Murphy, Andrea B. Mosler, Jonathan Hodgson, Sophia Nimphius, Evert Verhagen, Joanne Kemp, Alex Donaldson, Debra Langridge, Vanessa R. Sutton, Kay M. Crossley, Clare L. Ardern, Carolyn A. Emery, Mary A. Kennedy, Simone Radavelli-Bagatini, Martin Hägglund, Brady Green, G. Gregory Haff, Garth Allen, Andrea Bruder

Research outputs 2022 to 2026

A healthy police force is a key component of a well-functioning society, yet 1 in 20 law enforcement recruits drop out of the recruit training programme due to injury. This drop-out rate has substantial economic and workforce ramifications. In the Western Australia Police Force, one in five recruits suffers a musculoskeletal injury during the recruit training programme, causing time-loss from work. We will now identify the critical elements of an injury prevention intervention and investigate the needs, experiences and suggested solutions to address potential implementation challenges. Our objective is to co-create an intervention with content and context experts, specifically for …

The Effect Of Fatigue On Climbing Fluidity And Hand Movements, Andrew Walsh, L. Seifert, C. Button, S. Vial, J. Croft

Research outputs 2022 to 2026

In rock climbing, climbers use their arms to regulate their posture on the wall, which can lead to localised muscle fatigue. Evidence shows fatigue is the primary cause of falls, but little is known about how fatigue specifically affects climbing rhythm and hand movements. The present study examined climbing fluidity and hand movements on an indoor climbing wall before and after a specific fatiguing protocol. Seventeen climbers completed three repetitions of a challenging climbing route (21 on Ewbank scale) with different levels of localised arm fatigue. Climbers’ movements were tracked using 3D motion capture, and their hand actions assessed using …

"On The Mat They Will Get Treated The Same": Male High School Wrestlers' Attitudes Towards Female Opponents, Emily Ann Kaht

Graduate Research Theses & Dissertations

Wrestling has historically been considered a male sport. Until recently, so few girls wrestled that those who did had no choice but to take on male opponents. Media reports and the literature indicate that those girls faced a wide range of attitudes from their opponents. While some women reported feeling supported by their male teammates, others reported hostility. Some stakeholders have, in the past, argued that wrestling is inherently unsuitable for girls, and some girls had trouble securing matches due to widespread refusal of boys to wrestle against them. Reasons given for boys forfeiting against girls have included a fear …

The Relationship Between Nutrition Knowledge And Dietary Behavior Of Student-Athletes, Kerry A. Smith, Kathleen Fritch, James Rost, Amy Jo Riggs, Juliann Sergi Mcbrayer, Monika Krah

Georgia Educational Researcher

The purpose of this study was to examine the relationship between nutrition knowledge and dietary behavior while controlling for academic major, year, and gender among Division III student-athletes. Sufficient nutrition is essential for athletic performance, injury reduction, and overall health. However, student-athletes face unique challenges that can disrupt optimal nutrition, including poor nutrition knowledge and access to available resources. While several studies have examined the relationship between nutrition knowledge and dietary behavior, no known studies have addressed this among Division III student-athletes. This non-experimental correlational study examined dietary behavior using the Rapid Eating and Activity Assessment for Participants (REAP-S) and …

Muscle Strength, Muscle Endurance, Voluntary Activation, And Perception Of Effort In Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (Me/Cfs): An Overview, James L. Nuzzo, Janet L. Taylor, Christopher Latella

Research outputs 2022 to 2026

Background: Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a debilitating condition characterized by fatigue, post-exertional malaise, perceived muscle weakness and other symptoms. Whether muscle strength is objectively reduced in ME/CFS is unclear. Objective and methods: Our aim was to determine if muscle strength, muscle endurance, voluntary activation, and perceived effort during muscle endurance tasks are altered in ME/CFS by reviewing the relevant literature. Results: We identified 27 studies that compared muscle strength or endurance between individuals with ME/CFS (n = 1,023) and healthy controls (n = 672). Tests typically involved handgrip, elbow flexion, or knee extension tasks. Across studies, muscle strength …

Psychophysiological Tools & Techniques To Predict Perceptual Motor Task Outcomes, Bobby Gerald Rawls Iii

Graduate Theses, Dissertations, and Problem Reports (ETD)

The process of perceiving environmental information, analyzing it, formulating a plan of action, and carrying out said plan is vital to our day to day lives. This loop occurs for every motor task we perform, from actions as simple as elbow flexion to as complex as performing surgery. As such, it is imperative to understand what physiological, psychological, and neurocognitive factors most dictate success or failure in the motor performance loop.

Prior research has shown that measures from each of these facets have strong relationships with motor performance outcomes, though these findings tended to rely on artificially produced stress in …

Psychological Impacts In Exercise Riders And Professional Jockeys Following Injury, Kelley M. Renner

Theses and Dissertations--Kinesiology and Health Promotion

One of the most well-known equestrian sports, horse racing, is not only a cornerstone of Kentucky’s economy, but also a vital part of its culture, with professional jockeys playing an essential role in the local communities and traditions that define the state. Despite its popularity and financial impact, mental health challenges within the sport have continually been shrouded in silence and ignored in research (Ball et al., 2007). Equally concerning is the high injury prevalence, and psychological impact of these injuries (e.g., psychological distress, depression, anxiety, loss of identity, and self-esteem (King et al., 2022; Losty et al., 2019; McConn-Palfreyman …

You’Re Too Slow! Self-Selected Volitional Efforts Reveal Unexploited Neuromuscular Reserve Capacity Compared To Maximal Efforts During Fatiguing, Load Equated Resistance Exercise, Brian Benitez

Theses and Dissertations--Kinesiology and Health Promotion

This investigation examined how movement intent influences neuromuscular excitation strategies during fatiguing resistance exercise, comparing maximal intended concentric efforts versus self-selected volitional efforts during load-equated Smith machine back squat exercise to quantify reserve capacity and characterize underlying neuromuscular mechanisms. Twenty-three resistance-trained participants (12 males, 11 females) completed a repeated-measures design, with replication, across six visits, performing smith machine back squat repetitions-to-failure at 70% 1RM under maximal intent (accelerate rapidly) and volitional intent (self-selected effort) conditions. Maximal voluntary isometric contractions used rapid (instantaneous 10-second effort) and ramp (5-second build-up, 5-second maximal) protocols. Surface electromyography (sEMG) was recorded from vastus lateralis and …

The Effects Habitual Training Shoe Use Has On Running Economy When Transitioning To High Performance Running Shoes, Dalton C. Harris

Theses and Dissertations--Kinesiology and Health Promotion

Background: The recent increase in popularity of minimal shoes in endurance running is linked to potential improvements in running economy and reduced injury risk. However, high performance running shoes, specifically designed to improve running economy remain the fastest shoe to wear when racing. Purpose: Knowing this, the aim of this paper is to examine whether or not the habitual use of minimal shoes increases the benefits of the high performance shoes. This will guide practitioners and athletes when establishing shoe rotations and training plans during race preparation. Methods: The study consisted of 4 sessions: Sessions 1 and 2 were maximal …

Individual Differences Provide A Nuanced Understanding Of The Contributions Of Age, Experience, And Level Played To Superior Perceptual-Cognitive-Motor Skill, Khaya Morris-Binelli, Minerva A. Westbrook, Benjamin Piggott, Sean Müller, Paola Chivers

Research outputs 2022 to 2026

Theories of expertise either predict superior performance is due to monotonic and progressive exposure to a domain task or due to non-linear exposure to a domain. The aim of this study was to explore the predictions of these theories by use of an individual differences approach to investigate how age, experience, and level played within a sample of athletes with high expertise contributes to superior perceptual-cognitive-motor skill. Twenty-seven players sampled from junior rugby union high-performance pathways and professional rugby union teams in Australia completed an in-situ perceptual-cognitive-motor test involving four attackers and three defenders. Participants were presented with scenarios representative …

College Athlete Workload Management To Improve Performance, Brody Reid

Graduate Student Theses, Dissertations, & Professional Papers

Load management is an often used and misunderstood term within the realm of sport science. It has been described as the reason behind numerous soft tissue injuries as well as being the reason star athletes sit on the bench for games. This review aims to synthesize the existing literature regarding the workload management paradox within sport. Seminal work in this topic has been gathered mostly by Tim Gabbett in the paper “The Injury Prevention Paradox” where a relationship between fitness gain and fatigue accrued is outlined. This theory was first proposed by Roger Bannister in 1975. This paper …

The Mediating Effect Of Injury On The Relationship Between Running Mileage And Depressive Symptoms In Division 2 Cross Country Athletes, Jaxon Leduc

Cal Poly Humboldt theses and projects

Training for a cross-country season requires athletes to accumulate a high volume of training miles at different intensities. Over a period of months and years, consistent high training volumes have been shown to contribute to overuse injuries in cross country athletes. Injuries have been shown to negatively impact athlete’s mental health; this is especially true in student athletes. The purpose of this research is to explore the mediating effect of injuries on the relationship between training volume and mental health in collegiate cross-country runners. Participants in this study were 40 members of NCAA Division 2 Cross Country teams with eligibility …

Prediction Of Snatch And Clean And Jerk Performance From Physical Performance Measures In Elite Male Weightlifters, Ingo Sandau, Kristof Kipp

Exercise Science Faculty Research and Publications

This study aimed to build a valid model to predict maximal weightlifting competition performance using ordinary least squares linear regression (OLR) and penalized (Ridge) linear regression (penLR) in 29 elite male weightlifters. One repetition maximum (1RM) or 3RM test results of assistant exercises were used as predictors. Maximal performance data of competition and assistant exercises were collected during a macrocycle in preparation for a competition. One repetition maximum snatch pull, 3RM back squat, 1RM overhead press, and body mass were used to predict the 1RM snatch; and 1RM clean pull, 3RM front squat, 1RM overhead press, and body mass were …

Nutritional Strategies To Improve Post-Exercise Recovery And Subsequent Exercise Performance: A Narrative Review, Alireza Naderi, Jeffrey A. Rothschild, Heitor O. Santos, Amin Hamidvand, Majid S. Koozehchian, Abdolrahman Ghazzagh, Erfan Berjisian, Tim Podlogar

Research outputs 2022 to 2026

Post-exercise recovery strategies influence the body’s ability to restore physiological homeostasis, replenish energy stores, repair muscle damage, and promote desired adaptations, which improve exercise performance. This narrative review examines the impact of nutritional strategies commonly used for enhancing recovery and subsequent exercise performance, particularly when athletes face short recovery periods. Carbohydrate ingestion is essential for glycogen replenishment, especially within the initial hours post-exercise, with its impact dependent on the types, timing, and amount. Protein is essential for accelerating muscle recovery and achieving a positive nitrogen balance, depending on the type and dosage. The co-ingestion of carbohydrates with proteins or fats …

Train Less And Still Similarly Improve? Maturational Growth Is More Influential Than Training Engagement On Performance Indices Development In Volleyball, Stephen Cobley, Marie Javet, Shaun Abbott, Caitlin Fox-Harding, Stephen Bested, Daniel Hackett, Michael Romann

Research outputs 2022 to 2026

Identifying factors which more or less account for performance improvement during developmental stages is essential for sports science knowledge and coaching practice. Accordingly, this study examined the longitudinal, changing, influences of Volleyball-specific Training Engagement (VTE) and Maturity Status on physical test performance development. Participants were N = 139 Swiss female competitive volleyball players, aged 10–14 years at baseline (M = 12.93, SD = 1.15 years). Annually for 3 years, participants completed the 9-3-6-3-9 Agility Sprint; Standing Long Jump [SLJ] and Jump & Reach test. Linear Mixed Models (LMMs) examined longitudinal independent and interactive relationships between VTE (hours/week) and Maturity Status …

Rapid Force Generation During Unilateral Isometric Hamstring Assessment: Reliability And Relationship To Maximal Force, N. J. Ripley, J. Fahey, M. Cuthbert, J. J. Mcmahon, Paul Comfort

Research outputs 2022 to 2026

Limited research has reported the reliability of rapid force generation characteristics during isometric assessments of the hamstrings. Therefore, the purpose of the present study was to determine the between-session reliability of rapid force generating characteristics of the hamstrings and relationship to maximal force production. Twenty-three female soccer players (age: 20.7 ± 4.7 years; height: 168.7 ± 5.9 cm; body mass: 64.4 ± 6.7 kg) performed three unilateral trials of the 90–90 isometric hamstring assessment, on two separate occasions, separated by 7 days. Peak force, force at 100- and 200 ms and average rate of force development (aRFD) over 100- and …

Exercise And Sports Science Australia Updated Position Statement On Exercise For Preventing Falls In Older People Living In The Community, Anne Tiedemann, Daina L. Sturnieks, Elissa Burton, Jeannette M. Thom, Stephen R. Lord, Stacey Scott, Catherine Sherrington

Research outputs 2022 to 2026

Backgrounds: Falls affect a significant number of older Australians and present a major challenge to health care providers and health systems with over 380 older Australians hospitalised for a fall each day.

Objectives: This statement seeks to inform and guide exercise practitioners and health professionals in safe and effective prescription of exercise to prevent falls amongst community-dwelling older people.

Exercise prescription to prevent falls: Exercise is crucial for preventing falls in older age. Research evidence has identified that programmes which include functional balance and muscle strength training are the most effective in preventing falls. It is also important for exercise …

Community Perspectives On Spinal Cord Injury In Rugby Union: Facts And Fears, Nicole Merrick, Marelise Badenhorst, Ashlee Morgan, Lauren Fortington

Research outputs 2022 to 2026

Introduction: The sport of rugby union, henceforth rugby, is associated with a risk of spinal cord injury (SCI). Perceived risks can impact participation. Understanding community perspectives on rugby-related SCI may provide insight for addressing concerns around risk. The aim of this study was to explore community perspectives through social media discussion about SCI in rugby union. Methods: Posts about SCI in rugby union were identified using the advanced search function on Twitter. Data (content as original post, retweet, quote tweet and comments) were included if focused on Rugby Union and written in English. Inclusion dates (July 2018 to June 2019) …

Practices And Perceptions In Hamstring Training For Injury Prevention And Enhancement Of Athletic Performance: A Qualitative Analysis, Steven Ross, Nicholas J. Ripley, Paul Comfort

Research outputs 2022 to 2026

Hamstring strain injuries (HSIs) remain a prevalent issue across sports, despite extensive research. Previously, the current authors have reported practices and perceptions of training for the mitigation of HSIs, however such practices are highly nuanced. In this study, the authors utilised semi-structured interviews to further understand applied practitioner perceptions and identify how evidence is translated into practice. Twelve practitioners (one physiotherapist and eleven strength and conditioning [S&C] coaches including one dual accredited S&C coach and physiotherapist) working in a range of sporting disciplines were interviewed across six broad categories of questioning (practitioner profile, job role challenges, resistance training, high-speed running …

Effects Of Beetroot Gummy Jelly Ingestion On Running Performance In Simulated Hypoxia In Recreational Runners, Jun Ma

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study examined the effects of seven days of beetroot gummy jelly (BGJ) supplementation on physiological, metabolic, and endurance performance responses under sea-level and simulated hypoxic conditions. Eleven male recreational runners (age 22.3 ± 1.8 years; BMI 21.4 ± 2.0; VO2 max 54.2 ± 4.6 mL·kg-¹·min-¹) completed four randomized, double-blind, placebo-controlled trials: BGJ–sea level, BGJ–hypoxia, placebo–sea level, and placebo–hypoxia. Participants consumed BGJ or placebo daily for seven days before each trial. Physiological measurements included serum nitrate/nitrite, blood glucose, lactate, heart rate (HR), arterial oxygen saturation (SpO2), perceived exertion (RPE), muscle oxygenation (ΔTSI), and a 10-km time-trial performance test.BGJ supplementation significantly …

การเปรียบเทียบความสม่ำเสมอในการตบหัวเสาระหว่างนักกีฬาวอลเลย์บอลสโมสรทีมชายและหญิง, เจษฎา คงสมของ

Chulalongkorn University Theses and Dissertations (Chula ETD)

การวิจัยครั้งนี้มีวัตถุประสงค์เพื่อเปรียบเทียบความสม่ำเสมอในการตบหัวเสาระหว่างนักกีฬาวอลเลย์บอลสโมสรทีมชายและหญิง กลุ่มตัวอย่าง คือ นักกีฬาวอลเลย์บอล ตำแหน่งตัวตบหัวเสา ทีมชายและหญิง อายุ 20-30 ปี เป็นนักกีฬาทีมสโมสร เป็นเพศชายจำนวน 6 คน และเพศหญิง 5 คน ซึ่งมาจากการเลือกแบบเจาะจง (Purposive Sampling) นักกีฬาวอลเลย์บอลในตำแหน่งตัวตบหัวเสาทั้งหัวเสา โดยแบ่งการทดสอบออกเป็น 2 ส่วน ได้แก่ 1. การทดสอบความแข็งแรงของกล้ามเนื้อ ความสูงในการกระโดด และความอดทนของกล้ามเนื้อ และ 2. ได้แก่การทดสอบความสม่ำเสมอดูจากมุมของข้อต่อเพื่อนำไปวิเคราะห์ 2 มุม คือมุมของหัวเข่าและมุมของหัวไหล่ โดยจะมีการติดจุดมาร์คเกอร์จำนวน 5 จุด ได้แก่ ข้อศอก หัวไหล่ สะโพก หัวเข่า และข้อเท้า เพื่อนำมาเปรียบเทียบค่าเฉลี่ย ความแปรปรวนและพิสัยของมุมข้อต่อ การวิเคราะห์ทางสถิติโดยหาค่าเฉลี่ย (Mean) และส่วนเบี่ยงเบนมาตรฐาน (Standard deviation) โดยการวิเคราะห์ระหว่างกลุ่มโดยการทดสอบค่าทีแบบ Independent t-test โดยมีระดับนัยสำคัญที่ p < .05 และการหาความสัมพันธ์ระหว่างความแข็งแรงของกล้ามเนื้อและความสม่ำเสมอในการตบหัวเสาด้วยการวิเคราะห์การถดถอย ผลการวิจัยพบว่า การเปรียบเทียบความสม่ำเสมอจากการเปรียบเทียบค่าเฉลี่ย ความแปรปรวน และพิสัยของมุมหัวไหล่พบว่า ไม่มีความแตกต่างอย่างมีนัยสำคัญทางสถิติที่ระดับ .05 บ่งชี้ว่ามุมการเคลื่อนไหวหัวเข่าและหัวไหล่ของทั้งเพศชายและหญิงไม่มีความแตกต่างกัน ตัวแปรนี้ให้ผล t-test ที่มีนัยสำคัญ ได้แก่ ความแข็งแรงของกล้ามเนื้อ p = .024 ความสูงในการกระโดด p = .001 และความอดทนของกล้ามเนื้อ p = .009 ในส่วนของประสบการณ์การแข่งขันของนักกีฬาพบว่าไม่มีเพศหญิงและชายไม่มีความแตกต่างอย่างมีนัยสำคัญที่ระดับ .05

ผลของการฝึกการเพ่งความตั้งใจที่มีต่อความสามารถในการเคลื่อนที่เปลี่ยนทิศทางทางด้านข้าง ในนักกีฬารักบี้ฟุตบอลเพศหญิง, เอนด้า อลีนา ปรียอซูซีลอ

Chulalongkorn University Theses and Dissertations (Chula ETD)

การวิจัยเชิงทดลองฉบับนี้มีวัตถุประสงค์เพื่อศึกษาผลฉับพลันของ การเพ่งความตั้งใจแบบภายใน (internal focus) และการเพ่งความตั้งใจแบบภายนอก (external focus) ที่มีต่อความสามารถในการเคลื่อนที่เปลี่ยนทิศทางทางด้านข้าง (Side-step cutting: SSC) ตัวแปรทางชีวกลศาสตร์ และความเสี่ยงต่อการบาดเจ็บของเอ็นไขว้หน้าหัวเข่า (cutting Movement Assessment Score: CMAS) ในกลุ่มนักกีฬารักบี้ฟุตบอลเพศหญิง จำนวน 13 คน อายุระหว่าง 18–24 ปี โดยให้ผู้เข้าร่วมทำการเคลื่อนที่เปลี่ยนทิศทางด้วยขาข้างถนัดและขาข้างที่ไม่ถนัด ภายใต้เงื่อนไขการเพ่งความตั้งใจแบบภายใน การเพ่งความตั้งใจแบบภายนอก และเงื่อนไขควบคุม ใช้รูปแบบการถ่วงดุลลำดับ (counterbalance design) เพื่อกำหนดลำดับเงื่อนไขการทดสอบ โดยเว้นระยะห่าง 7 วันระหว่างแต่ละครั้ง วิเคราะห์ความแตกต่างทางสถิติของค่าเฉลี่ยของความสามารถในการเคลื่อนที่เปลี่ยนทิศทางชีวกลศาสตร์การเคลื่อนที่เปลี่ยนทิศทาง และความเสี่ยงในการเกิดการบาดเจ็บของเอ็นไขว้หน้าหัวเข่า ด้วยสถิติ paired-sample t-test และ one-way ANOVA with repeated measures ที่ระดับนัยสำคัญ .05 ผลการวิจัยพบว่า ผู้เข้าร่วมงานวิจัยสามารถเพ่งความตั้งใจไปยังตำแหน่งที่กำหนดได้อย่างถูกต้องตามเงื่อนไขการเพ่งความตั้งใจที่ได้รับ อย่างไรก็ตาม ไม่พบความแตกต่างอย่างมีนัยสำคัญทางสถิติของระยะทาง ความเร็ว และตัวแปรทาง ชีวกลศาสตร์ภายใต้เงื่อนไขการเพ่งความตั้งใจที่ต่างกัน ส่วนคะแนน CMAS ของขาข้างที่ไม่ถนัดภายใต้การเพ่งความตั้งใจแบบภายนอก (3.25±1.15) มีค่าต่ำที่สุด (p = 0.07) แสดงถึงคุณภาพการเคลื่อนไหวที่ดีและความเสี่ยงต่อการบาดเจ็บที่ลดลงสรุปผลการวิจัย การเพ่งความตั้งใจแบบภายนอกแม้ไม่ส่งผลต่อผลลัพธ์ด้านความสามารถในการเคลื่อนที่เปลี่ยนทิศทางและตัวแปรทางชีวกลศาสตร์โดยรวม แต่แสดงแนวโน้มที่ช่วยให้คุณภาพการเคลื่อนไหวของขาข้างที่ไม่ถนัดดีขึ้น โดยสะท้อนผ่านคะแนน CMAS ที่ต่ำกว่าเมื่อเทียบกับเงื่อนไขอื่น ชี้ให้เห็นว่าคำชี้แจงการเพ่งความตั้งใจแบบภายนอกอาจมีศักยภาพในการพัฒนารูปแบบการเคลื่อนไหวในขาข้างที่ไม่ถนัด ทั้งนี้ควรมีการศึกษาเพิ่มเติมด้วยการเพิ่มขนาดของกลุ่มตัวอย่างและศึกษาผลของการเพ่งความตั้งใจในระยะยาวเพื่อยืนยันผลลัพธ์ของการใช้คำชี้แจงการเพ่งความตั้งใจ

ผลของการฝึกสเต็ปแอโรบิกร่วมกับการจำกัดการไหลเวียนเลือดต่อโครงสร้างและการทำงานของกล้ามเนื้อและหลอดเลือดในผู้หญิงวัยหมดประจำเดือน, อาทิตยา พันตะเภา

Chulalongkorn University Theses and Dissertations (Chula ETD)

การศึกษาวิจัยนี้ มีวัตถุประสงค์เพื่อศึกษาผลของการฝึกสเต็ปแอโรบิกร่วมกับการจำกัดการไหลเวียนเลือดต่อโครงสร้างและการทำงานของกล้ามเนื้อ โครงสร้างและการทำงานของหลอดเลือด สมรรถภาพทางกาย และความหนาแน่นของมวลกระดูกในผู้หญิงวัยหมดประจำเดือนกลุ่มตัวอย่างเป็นผู้หญิงวัยหมดประจำเดือน อายุเฉลี่ย 55.74 ± 0.52 ปี จำนวน 27 คน แบ่งเป็น 2 กลุ่ม ได้แก่ กลุ่มควบคุมหรือกลุ่มใช้ชีวิตประจำวันตามปกติ (CON, n=14) และกลุ่มฝึกสเต็ปแอโรบิกร่วมกับการจำกัดการไหลเวียนเลือด (SA-BFR, n=13) ที่ร้อยละ 40 ของความดันในการปิดกั้นการไหลเวียนเลือดแดง (40 % of arterial occlusion pressure; AOP) เป็นระยะเวลา 12 สัปดาห์ โดยกลุ่ม SA-BFR ออกกำลังกายที่ความหนักร้อยละ 60 - 89 ของอัตราการเต้นหัวใจสำรอง (60 – 89 % of heart rate reserve; HRR) เป็นเวลา 45 นาที 3 วันต่อสัปดาห์ โดยความเข้มข้นของการฝึกถูกปรับเพิ่มขึ้นอย่างต่อเนื่องทุก ๆ 4 สัปดาห์ โดยการปรับทั้งความเร็วของจังหวะเพลงและช่วงเป้าหมายของอัตราการเต้นหัวใจสำรอง ผู้วิจัยทำการทดสอบตัวแปรด้านสรีรวิทยาทั่วไป โครงสร้างและการทำงานของกล้ามเนื้อ โครงสร้างและการทำงานของหลอดเลือด และสมรรถภาพทางกายในช่วงก่อนการทดลอง ระหว่างการทดลองในสัปดาห์ที่ 8 และหลังการทดลองครบ 12 สัปดาห์ และนำข้อมูลมาวิเคราะห์เพื่อเปรียบเทียบค่าเฉลี่ยของตัวแปรก่อน ระหว่าง และหลังการทดลองด้วยวิธีการวิเคราะห์ความแปรปรวนสองทางแบบผสมผสาน (2 กลุ่ม x 3 เวลา) (Two–way mixed ANOVA: 2 Groups x 3 Times) และใช้การทดสอบแบบรายคู่ด้วยสถิติ LSD ที่ระดับนัยสำคัญทางสถิติ 0.05ระหว่างฝึกในสัปดาห์ที่ 8 และหลังฝึกครบ 12 สัปดาห์ พบว่ากลุ่ม SA-BFR มีการเพิ่มขึ้นของมวลกล้ามเนื้อทั้งร่างกาย (ก่อน = …