Two-Year Skeletal Adaptations In Development And National Level Female Figure Skaters,
2025
University of Calgary
Two-Year Skeletal Adaptations In Development And National Level Female Figure Skaters, Chelsea Wong, Leigh Gabel, Erik Groves, Kelly Quipp, Steven Boyd, Lauren Burt
International Journal of Exercise Science
International Journal of Exercise Science 18(3): 1297-1309, 2025. https://doi.org/10.70252/ZSKN7069 Figure skaters typically have higher bone mineral density (BMD) than the general population. However, the current literature is limited to cross-sectional studies. The objective of this study was to determine two-year changes in volumetric BMD, bone microarchitecture, and estimated bone strength in elite national and development level Canadian figure skaters. Eleven female figure skaters aged 14+ years were recruited for this longitudinal study. Measurements occurred annually. High-resolution peripheral quantitative computed tomography (HR-pQCT) scans of the radius and tibia underwent three-dimensional image registration. Total (Tt), cortical (Ct) and trabecular (Tb) volumetric BMD …
Comparative Analysis Of Training Load And Technical Demands In Various Small-Sided Games During Soccer Preseason,
2025
University of Split, Faculty of Kinesiology
Comparative Analysis Of Training Load And Technical Demands In Various Small-Sided Games During Soccer Preseason, Jakov Marasović, Ante Rađa, Frane Žuvela, Luka Čikotić, Marko Erceg
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 1286-1297, 2025. https://doi.org/10.70252/QCAG3602 Small-sided games (SSG) are often used as a multifunctional form of specific training that allows development of various key components during soccer training. The main goal of this research was to determine the differences in internal and external load of different small-sided games (SSG) during preseason. The secondary goal was to analyze specific technical demands during these SSG. Twelve players of the First Croatian Junior League (U19) participated in this research in the fourth week of the preparatory period for the competitive season 2019/2020. Testing was conducted on two separate days …
Development And Validation Of A Running Drill Test Battery To Predict 5 M And 20 M Sprint Performance,
2025
University of Split, Faculty of Kinesiology
Development And Validation Of A Running Drill Test Battery To Predict 5 M And 20 M Sprint Performance, Paula Matijašević, Josip Maleš, Luka Cikojević, Frane Žuvela, Goran Kuvačić
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 1269-1285, 2025. https://doi.org/10.70252/LYKE8231 This study aimed to evaluate the reliability and predictive validity of specific athletic running drills: A-skip, B-skip, bounding step, and jumps, in relation to sprint performance over 5 m and 20 m distances. Sixty-three young males (mean age: 21.3 ± 2.1 years; body height: 183 ± 6.5 cm; body weight: 77 ± 9.3 kg) were enrolled in the study. Running drill performance was recorded on an athletics track using high-speed cameras and evaluated based on predefined criteria and a scoring system. Reliability was assessed using intraclass correlation coefficients (ICC) and coefficients …
Perceived Recovery And Muscle Fatigue In Professional Soccer Players During Preseason,
2025
University of Split, Faculty of Kinesiology
Perceived Recovery And Muscle Fatigue In Professional Soccer Players During Preseason, Josip Maleš, Frane Žuvela, Nicola Bragazzi, Andrea De Giorgio, Goran Kuvačić
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 1212-1227, 2025. https://doi.org/10.70252/ERIN2946 This study aimed to examine weekly variations and within-subject relationships between internal training intensity (ITI), perceived recovery (TQR), neuromuscular performance (CMJ), and perceived muscle soreness (PMS) during a four-week preseason period in professional soccer players. Twenty-three soccer players (age 24.8 ± 4.4 years; height 182 ± 7 cm; body mass 74.6 ± 6.7 kg) classified as Tier 3 athletes from the Croatian Second Soccer League were monitored using session rating of perceived exertion, TQR scales, countermovement jump tests, and PMS questionnaires. A significant reduction in ITI and concurrent improvement in TQR …
Age And Postural Stability In Firefighters: An Analysis Of Anterior Reach Asymmetry And The Two-Foot Length Criterion,
2025
The University of Tulsa
Age And Postural Stability In Firefighters: An Analysis Of Anterior Reach Asymmetry And The Two-Foot Length Criterion, Madeleine Fulk, Roger O. Kollock, Maddie Seidner, Rachel Ward, Zora Szabo, Muhammed O. Malik, Gabriel J. Sanders
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 1175-1185, 2025. https://doi.org/10.70252/HSMV3009 This study explored how age affects postural stability (PS) in firefighters by focusing on two key objectives: 1) determining if age affects right-to-left anterior (ANT) reach distance asymmetry (ASYM) during the Motor Control Screen (MCS) test and 2) assessing whether the proportion of firefighters not meeting the greater than two-foot length (2FL) criterion for ANT reach differs across age groups. Data from 95 male firefighters were analyzed using the MCS ANT reach test, part of the Y-Balance Test (YBT). The key outcomes were the difference in ANT reach distances between legs …
The Effects Of Combined Fasting And Exercise On Inflammatory Cytokine Concentrations In Healthy Adults: A Randomized Crossover Study,
2025
Department of Exercise Sciences, Brigham Young University, Provo, UT, USA; Division of Physical Activity and Weight Management, University of Kansas Medical Center, Kansas City, KS, USA
The Effects Of Combined Fasting And Exercise On Inflammatory Cytokine Concentrations In Healthy Adults: A Randomized Crossover Study, Landon S. Deru, Austin F. Duersch, Spencer C. Cleverly, Hunter D. Chamberlain, Elizabeth Z. Gipson, Parker G. Graves, Cameron G. Jacobsen, Larry A. Tucker, Bruce W. Bailey
International Journal of Exercise Science
International Journal of Exercise Science 18(6): 1252-1268, 2025. https://doi.org/10.70252/APHT9483 The object was to assess the effects of adding exercise to a 36-hour fast on the inflammatory cytokines IL-6, TNF-α, and MCP-1. The study was a randomized crossover design with counterbalanced conditions in community members living near a single academic institution. Participants included twenty healthy adults (11 male). The intervention consisted of two 36-h water-only fasts, one of which was initiated with a bout of treadmill exercise. Venous blood was taken at baseline, 12-h, 24-h, and 36-h of fasting. Area under the curve and timepoint analyses were computed. The area under …
Incidence And Risk Factors Of Metabolic Syndrome In Track And Field Throwing Athletes,
2025
Department of Exercise Science, Springfield College, Springfield, MA, USA
Incidence And Risk Factors Of Metabolic Syndrome In Track And Field Throwing Athletes, Taylor Browning, Samuel Headley, Elizabeth M. Mullin, Margaret T. Jones, Andrew R. Jagim, Jennifer Fields
International Journal of Exercise Science
International Journal of Exercise Science 18(6): 1199-1211, 2025. https://doi.org/10.70252/HOKT7948 Track and field (T&F) throwers are a prominent subgroup of athletes that may be at risk for the development of Metabolic Syndrome (MetSyn) and other cardiometabolic disease conditions. However, limited research exists examining the prevalence of MetSyn in these athletes. Therefore, the purpose of this study was to examine the incidence of MetSyn and associated risk factors in collegiate throwers. Collegiate Division I men (n=17) and women (n=4) T&F throwers participated in a single day of lab assessments, which included anthropometrics, body composition, blood pressure, a venous blood draw, and aerobic …
Influence Of Social Identity And Industry Role On Implicit Biases In Fitness Professionals,
2025
California State University, Long Beach
Influence Of Social Identity And Industry Role On Implicit Biases In Fitness Professionals, Shayna J. Guerra, Katie Mcpherrin, Kellie A. Walters, Leilani Madrigal, Alison Ede, Amber Johnson
International Journal of Exercise Science
International Journal of Exercise Science 18(4): 1228-1251, 2025. https://doi.org/10.70252/SQUH3795 Implicit biases are unconscious, internally held beliefs shaped by cultural norms, societal structures, and personal experiences and are often related to societal constructs such as race, gender, age, body shape, and ability. The aim of this study was to explore the relationship between social identity, industry role, and implicit biases in fitness professionals. Participants (n=296) were randomly assigned two implicit association tests (IATs): disability, weight, gender, skin-tone, or age. IATs measured implicit bias through word and pictorial associations and timed response to word/picture stimuli. Interviews (n=25) were conducted to further examine …
The Effect Of Mental Training On Psychological Hardiness And Selected Personality Traits Among Adolescent Male Volleyball Players,
2025
University of Baghdad
The Effect Of Mental Training On Psychological Hardiness And Selected Personality Traits Among Adolescent Male Volleyball Players, Moneer Fadel Ali Hassan, Omar Waleed Abdulkareem
International Journal of Exercise Science
International Journal of Exercise Science 18(4): 1186-1198, 2025. https://doi.org/10.70252/MQUH7716 This study was to examine the effect of a mental training program, including a combination of autogenic training and imagery, on a number of mental skills and on the development of personality traits - psychological hardiness as well as conscientiousness, openness to experience, and neuroticism - in Adolescent male volleyball players. 60 adolescent male volleyball players (aged 15–17) participated in a two-group, pretest-posttest design. The experimental group (n = 30) completed 8-week mental skills training program, including imagery, self-talk, attention control, and relaxation, while the control group (n = 30) followed …
Upper Extremity Asymmetries In Collegiate Tennis Players Compared To An Athletic Control Of Runners,
2025
Utah State University
Upper Extremity Asymmetries In Collegiate Tennis Players Compared To An Athletic Control Of Runners, Elizabeth A. Cafferty, Dale R. Wagner, Brennan J. Thompson
International Journal of Exercise Science
International Journal of Exercise Science 18(3): 1151-1165, 2025. https://doi.org/10.70252/MDRK9289 Previous research on limb asymmetries of athletes participating in dominant-sided sports lacks an athletic control group. This study aimed to determine the magnitude of upper limb asymmetries in dominant-sided athletes (tennis players) compared to nondominant-sided athletes (cross-country runners). Men and women university athletes (10 tennis, 11 cross-country) participated. Dual-energy x-ray absorptiometry (DXA) was used to measure bone mineral content (BMC), bone mineral density (BMD), and lean mass (LM) of the whole body, upper extremities, and forearms. Circumference measurements were taken at mid-biceps and widest part of the forearms. Bony breadth of …
Playing Surface Impacts Yo-Yo Intermittent Recovery Test (Level 1) Performance And Validity Of Indirect Vo2max Estimation,
2025
Department of Exercise Science, Barton College, Wilson, NC, USA
Playing Surface Impacts Yo-Yo Intermittent Recovery Test (Level 1) Performance And Validity Of Indirect Vo2max Estimation, Gianna Ferigne, Kloe Martin, Charlie Ottinger, Lauren Biscardi
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 1142-1150, 2025. https://doi.org/10.70252/PGPL8156 This study compared performance on the Yo-Yo Intermittent Recovery Test Level 1 (YYIR1) and the agility t-test between two playing surfaces, artificial turf and natural grass. This study also assessed agreement between estimated VO2max from the YYIR1 on artificial turf and natural grass with laboratory measured VO2max. Male collegiate soccer players completed three experimental sessions on separate days: YYIR1 and t-test on artificial turf, YYIR1 and t-test on natural grass, and a laboratory VO2max test. The validated Bangsbo et al. equation was used to estimate VO2max from YYIR1 distance. Participants covered …
Effects Of A Quadricep-Dominant Vs. Functional Training Program On Activities Of Daily Living, Functional Performance, And Motor Unit Recruitment In Older Adults,
2025
Department of Exercise Science, Ripon College, Ripon, WI, USA
Effects Of A Quadricep-Dominant Vs. Functional Training Program On Activities Of Daily Living, Functional Performance, And Motor Unit Recruitment In Older Adults, Brittany Followay, Tamera Holland, Larissa Rowley
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 1096-1113, 2025. https://doi.org/10.70252/YHYC9630 The study investigated the effects of a quadriceps-dominant (QD) versus functional (FX) training program on the Functional Movement Screen (FMS), activities of daily living (ADLs), and motor unit (MU) recruitment of the vastus lateralis (VL) and biceps femoris (BF). Twenty-six older adults (68.9 + 5.1yrs) were randomly assigned to a 6-week QD or FX training program. Participants completed ADLs, FMS, and three closed-kinetic chain exercises (CKCs): front lunge (FL), side lunge (SL), and bilateral squat (BLSQ), pre and post-intervention. Electromyography was recorded from the VL and BF during maximal voluntary isometric …
Influence Of Carbon-Fiber Shoes On Outdoor Running Biomechanics As Assessed With Wearable Sensors,
2025
Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, USA
Influence Of Carbon-Fiber Shoes On Outdoor Running Biomechanics As Assessed With Wearable Sensors, Megan Spencer, Nathan Goldcamp, Jean L. Mccrory
International Journal of Exercise Science
International Journal of Exercise Science 18(7): 1121-1132, 2025. https://doi.org/10.70252/JMBI4851 Carbon-fiber shoes feature a stiff yet lightweight curved carbon-fiber plate embedded in the sole and a resilient midsole foam. These shoes create spring-like rebounding effect that has proven to decrease energy consumption and enhance athletic performance. To date, most biomechanics research on carbon-fiber shoes has been laboratory-based. The purpose of our study was to compare running biomechanics in competitive runners wearing carbon-fiber shoes or traditional shoes using wearable sensors on an outdoor composite track. Ten elite runners (9F, 1M) who consistently ran over 30 miles per week and owned a pair …
Physical And Mental Benefits Of Chair Yoga For Older Adults: A Case Series,
2025
Wichita State University
Physical And Mental Benefits Of Chair Yoga For Older Adults: A Case Series, Justin Smith, Anna Buessing, Carson Pierce, Payton Hybarger, Taylor Antonowich, Wyatt Akins, Barbara Smith
International Journal of Exercise Science
International Journal of Exercise Science 18(5): 1166-1174, 2025. https://doi.org/10.70252/COQS7170 Fitness and rehabilitation professionals commonly use yoga training for improving balance, flexibility, and mental health in populations of all ages. However, little is known about how chair yoga, a specific form of yoga, would impact physical and mental health in older adults. The purpose of this case series was to explore the feasibility and benefits of an 8-week chair yoga class for older adults in an independent living facility. Four participants (ages 77-92 years) performed chair yoga interventions once a week for 8 weeks. Interventions included, but were not limited to, …
Where Is The Power In A Power Analysis?,
2025
Biomechanics Laboratory, Kinesiology Department, State University of New York at Cortland, Cortland, NY, USA
Where Is The Power In A Power Analysis?, Kevin D. Dames, Zoe Climenhaga, Jared Rosenberg
International Journal of Exercise Science
International Journal of Exercise Science 18(2): 1114-1120, 2025. https://doi.org/10.70252/AVGK2063 Strategic planning of research involves predicting the number of replications of the experiment needed to detect an expected effect. The power analysis to determine sample size for the proposed experiment requires known or estimated characteristics of existing distributions. When used well, power analysis reduces the risk of statistical errors, wasted efforts, and temptations to twist ensuing analyses to eke out a ‘significant’ result after data collections conclude. This editorial highlights some examples of how this process goes awry. Sections are dedicated to the role of researchers, the case for ‘pilot’ studies, …
An Example Analysis For A Gender-Inclusive Approach In Sport And Exercise Science Research Using Fitbit Outcomes From The All Of Us Research Program Dataset,
2025
Department of Kinesiology and Nutrition Sciences, University of Nevada, Las Vegas, Las Vegas, NV, USA
An Example Analysis For A Gender-Inclusive Approach In Sport And Exercise Science Research Using Fitbit Outcomes From The All Of Us Research Program Dataset, James W. Navalta, Dustin W. Davis, Jafra D. Thomas, Whitley J. Stone
International Journal of Exercise Science
International Journal of Exercise Science 18(1): 1133-1141, 2025. https://doi.org/10.70252/HRNQ4501 Prevalence studies with wearable devices are used to understand disparities in health-related physical activity behaviors and whether interventions are efficacious. However, studies have been limited to a binary definition of sex. This example analysis aimed to demonstrate how researchers can investigate differences in data beyond the sex-gender binary. Using a cross-sectional analysis of the All of Us Research Program dataset, participants' self-identified gender was categorized into Cisgender Female (n = 10,401), Additional Options (n = 27), Non-binary (n = 84), Transgender (n = 17), and Cisgender Male …
Ethnic Differences In Health-Related Quality Of Life, Physical Activity, And Health Locus Of Control,
2025
Health & Exercise Science Department, La Sierra University, Riverside, CA, USA
Ethnic Differences In Health-Related Quality Of Life, Physical Activity, And Health Locus Of Control, Kimberly Feiler
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 1072-1085, 2025. https://doi.org/10.70252/STUM6367 This research aimed to better understand the differences in health-related quality of life (HRQoL: general health, physical functioning), physical activity (PA), and health locus of control (HLOC: internal, external-chance, external-powerful others, God) among various ethnic groups. The study’s sample included 185 individuals, 22 - 81 years of age, who were attending or employed by one of three religiously-affiliated higher education institutions during the 2020-2021 academic year. Participants voluntarily answered questions about their ethnic identity, HRQoL, PA level, and HLOC. To analyze the interaction of HRQoL, PA, and HLOC, a multiple regression …
Hemodynamic And Autonomic Modulation In Response To Additive Sympathetic Stressors In Young, Healthy Individuals,
2025
School of Health Sciences, Exercise Science and Exercise Physiology, Kent State University, Kent, OH, USA; Exercise and Sport Science, Keiser University Flagship, West Palm Beach, FL, USA
Hemodynamic And Autonomic Modulation In Response To Additive Sympathetic Stressors In Young, Healthy Individuals, J. Derek Kingsley, Anthony G. Pinzone, Gretchen E. Elsey, Stacie M. Humm
International Journal of Exercise Science
International Journal of Exercise Science 18(6): 1047-1060, 2025. https://doi.org/10.70252/WWDK4926 Isometric handgrip (IHG) coupled with post-exercise muscular ischemia (PEMI) and the cold pressor test (CPT) have been demonstrated to increase measures of hemodynamics and to reduce vagal tone. However, little is known about how acute resistance exercise (RE) alters these responses. The purpose was to evaluate an acute bout of RE in conjunction with a single- or dual-stressor task on hemodynamics and autonomic modulation in resistance-trained individuals. Ten resistance-trained individuals (Mean ± SD; Age: 23 ± 3 years) completed a single- (SS: IHG + PEMI only) or dual-stressor (DS: IHG + …
The Effect Of Ankle Bracing On Athletic Performance Variables In Healthy Young Adult Athletes,
2025
Department of Physical Therapy, Western Kentucky University, Bowling Green, KY, USA
The Effect Of Ankle Bracing On Athletic Performance Variables In Healthy Young Adult Athletes, Penny L. Head, Kurt Neelly, Karen Furgal, Sydney Graves, Meredith Jordan, Mackenzie Polston, Zach Powars, Hailey Shuttleworth, Daniel Smalling
International Journal of Exercise Science
International Journal of Exercise Science 18(5): 1086-1095, 2025. https://doi.org/10.70252/XPTX6116 Acute ankle sprains are common in sports and carry a significantly increased risk of recurrence after an initial injury. Bracing has been shown to reduce injury recurrence; however, athletes may decline this prophylactic measure due to fear of negative effect on athletic performance. Previous research examining the impact of bracing on performance has demonstrated conflicting results. The purpose of this study was to examine the effect of bracing on choice reaction time and foot speed in healthy, young adults using computerized agility testing. Twenty-eight healthy athletes aged 18-25 years completed the …
Effect Of Velocity-Based Training On Vertical Jump Performance By Beach Volleyball Players,
2025
Physical Activity Sciences Postgraduate Program, Salgado de Oliveira University (UNIVERSO), Niterói, Brazil
Effect Of Velocity-Based Training On Vertical Jump Performance By Beach Volleyball Players, Filipe Aquino, Igor Nasser, Wladymir Külkamp, Bruno Ribeiro Ramalho Oliveira, Diego Viana Gomes, Everton Crivoi Do Carmo, Walace Monteiro, Eduardo Latari
International Journal of Exercise Science
International Journal of Exercise Science 18(3): 1061-1071, 2025. https://doi.org/10.70252/DFMZ2015 The aim of this study was to examine variations in countermovement jump (CMJ) performance after two velocity-based training (VBT) protocols in the half-squat exercise. Sixteen male beach volleyball athletes performed CMJ tests before and after three experimental sessions on the half-squat exercise. The two VBT protocols were performed in three sets, at a mean propulsive velocity (~ 0.49 m•s−1) associated with relative intensity (~ 85% 1RM), with three minutes interset recovery. In the VL0-10 session, the participants stopped their sets upon reaching a velocity loss (VL) threshold of 10%. …
