Accuracy Of Anthropometric Equations In Estimating Body Fat Percentage In Transgender Men Undergoing Gender-Affirming Hormone Therapy,
2025
Federal University of Amazonas
Accuracy Of Anthropometric Equations In Estimating Body Fat Percentage In Transgender Men Undergoing Gender-Affirming Hormone Therapy, Barbara Buosi, Yana Barros Hara, Rodolfo André Dellagrana, Rafael Martins Da Costa, Mateus Rossato
International Journal of Exercise Science
International Journal of Exercise Science 18(1): 686-694, 2025. Transgender people may opt for the use of sex steroids and, in some cases, hormone blockers, which can lead to changes in body fat distribution. The aim of this study was to verify the accuracy of anthropometric equations to estimate the body density (BD) of transgender men who are undergoing Gender-Affirming Hormone Therapy (GAHT). Four transgender men (25-32 years old), who had performed GAHT for at least six months and used the hormone testosterone cypionate participated in the study. The reference criteria for BD was air displacement plethysmography (ADP). In addition, BD …
Inter-Effort Recovery Intermittent Hypoxia And Force Parameters In Sprint Interval Exercise,
2025
Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, BRAZIL
Inter-Effort Recovery Intermittent Hypoxia And Force Parameters In Sprint Interval Exercise, Tarine Botta De Arruda, Felipe Alves Ribeiro Ms, Germano Marcolino Putti, Marcelo Papoti
International Journal of Exercise Science
International Journal of Exercise Science 18(3): 672-685, 2025. Performing training sessions in hypoxia leads to a decrease in effort quality. The inter-effort recovery intermittent hypoxia model seems to ensure training session performance. The aim of this study is to investigate the effects of sprint interval exercise under normoxic (NOR), continuous hypoxic (HYP), and inter-effort hypoxic (IEH) conditions on force parameters. Seven swimmers (age: 26.04 ± 4.64 years) volunteered and performed one session of the 10 × 30-s all-out tethered swimming efforts with 4-min passive recovery intervals for each condition. Considering the simulated altitude at FiO2 = 0.13 …
Firefighters Versus Law Enforcement Officers: A Comparison Of Cardiovascular Disease Risk,
2025
Texas A&M University
Firefighters Versus Law Enforcement Officers: A Comparison Of Cardiovascular Disease Risk, Bethany C. Guerra, Steven E. Martin, Lisa C. Colvin, J. Jay Dawes, Matthew J. Mcallister, Drew E. Gonzalez
International Journal of Exercise Science
International Journal of Exercise Science 18(6): 659-671, 2025. Firefighters (FFs) and law enforcement officers (LEOs) have heightened cardiovascular disease (CVD), with data suggesting that ≈45% of on-duty FF fatalities are related to CVD, while LEOs have a 1.7 times higher CVD prevalence than the general public. This study compared CVD risk biomarkers, fitness, and body composition between FFs and LEOs. Ninety-eight career, structural male FFs (age = 35.1±9.6 yrs; weight = 94.3±15.4 kg; height = 178.4±13.2 cm) and seventy-three career LEOs (age = 41.4±9.0 yrs; weight = 92.3±16.8 kg; height = 179.6±8.1 cm) from local departments were studied. Participants completed …
Sedentary Behavior Patterns After Acl Reconstruction,
2025
University of Nebraska Medical Center
Sedentary Behavior Patterns After Acl Reconstruction, David M. Werner, Liubov Arbeeva, Yvonne M. Golightly, Balarinivasa R. Sajja, Michael D. Rosenthal, Matthew Tao, Elizabeth Wellsandt
International Journal of Exercise Science
International Journal of Exercise Science 18(4): 636-658, 2025. Individuals after anterior cruciate ligament reconstruction (ACLR) are less physically active than their uninjured peers, but little is known about their sedentary behavior (SB). This study aimed to identify patterns of SB in individuals six and 18 months after ACLR. Eighteen individuals after ACLR wore accelerometers for one week during six- and 18-month post-operative assessments (83.3% female, 19.7±5.6 years old, BMI 23.9±kg/m2). The percentage of awake time spent in SB was estimated. A multilevel (two time points – six and 18 months), multidimensional (13 hours) functional principal component analysis generated …
Reliability Of A Linear Position Transducer During The Bench Press Across Three Segments,
2025
Kent State University
Reliability Of A Linear Position Transducer During The Bench Press Across Three Segments, Jennifer Rivera, Edward Pelka, Ryan Gant, Anthony G. Pinzone, Emily C. Tagesen, Modesto A. Lebron, Adam R. Jajtner
International Journal of Exercise Science
International Journal of Exercise Science 18(2): 622-635, 2025. The purpose of this investigation was to determine inter-set and inter-session reliability of the HUMAC360 measures for duration (DUR), peak velocity (PV) and mean velocity (MV) across three segments of the bench press. Seventeen recreationally active adults participated in this investigation. During visit one, participants completed a bench press one-repetition maximum (1RM). Visits two and three consisted of two sets of three repetitions at 30%-, 50%-, 60%-, and 70 %-1RM. Segments were defined by dividing total displacement into equal thirds at the bottom (BOT), middle (MID) and top (TOP). Intraclass correlation coefficients …
Kinematic Analysis Of Olympic And Traditional Rowing Mechanics At Different Stroke Rates,
2025
University of Alicante, Spain
Kinematic Analysis Of Olympic And Traditional Rowing Mechanics At Different Stroke Rates, Alfonso Penichet-Tomas, Sergio Calavia-Carvajal, Basilio Pueo, Lamberto Villalon-Gasch
International Journal of Exercise Science
International Journal of Exercise Science 18(7): 610-621, 2025. Rowing requires strength, endurance, and technique, where stroke efficiency depends on body mechanics, movement sequencing, and stroke rate, which impact speed transfer. This cross-sectional study investigates the role of kinematic differences in stroke mechanics as a key component of performance analysis in Olympic and Traditional rowing. Thirteen elite national-level female rowers (age: 26.9 ± 5.1 years; body mass: 60.6 ± 6.9 kg; height: 166.7 ± 6.7 cm) performed three stroke-rate conditions on two ergometer setups: an Olympic rowing ergometer and a modified ergometer with a static seat replicating Traditional rowing. The stroke …
The Effect Of Breakfast On A Resistance Training Session And Response In Female Collegiate Athletes,
2025
Sam Houston State University
The Effect Of Breakfast On A Resistance Training Session And Response In Female Collegiate Athletes, Haley Roberts, Yvette Figueroa, Jennifer Bunn, Patrick Davis
International Journal of Exercise Science
International Journal of Exercise Science 18(6): 591-609, 2025. Breakfast consumption has been shown to be an essential component to a healthy lifestyle in various populations, yet research in this area is limited among female athletes. This study aimed to examine the effect of breakfast consumption on collegiate female athletes during a resistance training session and their nutritional habits throughout the remainder of the day. Twenty-three female collegiate Division I athletes (basketball, volleyball, bowling, and soccer) during the offseason participated in this cross-over study. The study included three visits: baseline measures for heart rate (HR), blood glucose (BG), salivary cortisol (SC), …
Evolution Of Match Technical-Tactical Performance Indicators According To Age Category In Men's National Football Teams (World Cups 2003-2019),
2025
University of Murcia
Evolution Of Match Technical-Tactical Performance Indicators According To Age Category In Men's National Football Teams (World Cups 2003-2019), Sergio A. Caicedo-Parada, Enrique Ortega, Jose M. Palao
International Journal of Exercise Science
International Journal of Exercise Science 18(3): 575-590, 2025. Performance in football depends on different dynamic interactions between players that occur at technical, tactical, physical, psychological, or sociological levels. The objective of this study was to analyze the evolution of match technical-tactical performance indicators according to age category in men's national football teams (U-17, U-20 and senior). A non-experimental retrospective observational design was used. Variables studied were ball possession, goal chances, shots off target, shots on target, corner kicks, effectiveness; goals, offsides, fouls committed, yellow cards, red cards, and second yellow cards. Data were drawn from 917 matches (195 senior, 369 …
The Effect Of Functional Training On Dynamic Knee Valgus Of Youth Soccer Players. A Pilot Study,
2025
Department of Sport Science, University of Bielefeld, Bielefeld, GERMANY
The Effect Of Functional Training On Dynamic Knee Valgus Of Youth Soccer Players. A Pilot Study, Ole Tovar, Dóra Molnár, Badis Soussi, Ádám Uhlár, Tamás Horváth, Mira Ambrus
International Journal of Exercise Science
International Journal of Exercise Science 18(7): 561-574, 2025. Knee injuries are very common in soccer players. High loads on the knee during landing or changes of direction can lead to a valgus shift of the knee, known as Dynamic Knee Valgus (DKV). Many studies have shown that a large shift in DKV is a predisposing factor for knee injuries and disease, such as anterior cruciate ligament injury (ACL), patellofemoral pain syndrome or osteoarthritis. Functional training could be a great tool to reduce DKV. Thus, in this pilot study, nine male youth soccer players (mean age: 16.4 ± 0.2 years) took …
Detecting Physical Activity Using Wearable Sensor Data,
2025
PhD Student, Big Data Analytics, UCF
Detecting Physical Activity Using Wearable Sensor Data, Dipok Deb
Data Science and Data Mining
This study focuses on detecting physical activity using wearable sensor data, specifically distinguishing between walking and running. A dataset comprising accelerometer and gyroscope readings is used to train and evaluate various machine learning models, including logistic regression, random forest, k-nearest neighbors, naïve Bayes, and XGBoost. Extensive preprocessing, such as creating lag features and rolling statistics, is performed to enhance temporal data representation. The models are evaluated using metrics like accuracy, precision, recall, and F1 score. Incorporating lag and rolling features significantly improves model performance, with logistic regression achieving perfect scores across all metrics. These findings demonstrate the effectiveness of enhanced …
A Descriptive Analysis Of The Current State Of Peace Officer Standards And Training Physical Fitness Requirements Across The Usa,
2025
California State University, Fullerton
A Descriptive Analysis Of The Current State Of Peace Officer Standards And Training Physical Fitness Requirements Across The Usa, Robert G. Lockie, Joseph Dulla
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 543-560, 2025. Many law enforcement organizations are experiencing recruitment and retention challenges, of which physical fitness can be a factor. The study purpose was to collate information from Peace Officer Standards and Training (POST) Commission staff in each USA state to document current fitness mandates and policies for recruits/officers. A 10-question survey was allocated to an appropriate representative from every state POST organization. The survey collected information regarding minimum state-mandated fitness standards for academy entry and exit; minimum state-mandated requirements for fitness programming, including safety plans; education/training requirements for fitness training instructors; and minimum …
Physiological And Biomechanical Responses To Indoor Cycling With And Without The Ability To Sway,
2025
University of Nevada, Las Vegas
Physiological And Biomechanical Responses To Indoor Cycling With And Without The Ability To Sway, Alina P. Swafford, James W. Navalta, Julia Freedman Silvernail, Nancy Lough, John A. Mercer
International Journal of Exercise Science
International Journal of Exercise Science 18(7): 531-542, 2025. The purpose of this study was to understand whether or not physiological and biomechanical measures were influenced by cycling sway and intensity. Participants (n=13; 24.9±6.5 years; 1.7±0.1 m; 64.7±11.2 kg) completed two submaximal-effort cycling conditions using a stationary smart bike placed on a rocker board: 1) cycling with the rocker board set to allow sway (unblocked); 2) cycling with blocks placed in the rocker board to prevent sway (blocked). The order conditions were counterbalanced, and each condition was 12-mins. For each condition, four intensity levels were completed. Prior to testing, target power …
Effectiveness Of Exercise-Based Rehabilitation In Chronic Fatigue Syndrome: A Systematic Review And Meta-Analysis,
2025
Faculty of Health Sciences, Universidad Europea de Canarias
Effectiveness Of Exercise-Based Rehabilitation In Chronic Fatigue Syndrome: A Systematic Review And Meta-Analysis, Antonio De Vera Martín, Alberto Díaz Salazar, Isidro Miguel Martín Pérez, Sebastián Eustaquio Martín Pérez
International Journal of Exercise Science
International Journal of Exercise Science 18(5): 495-530, 2025. Chronic Fatigue Syndrome is a complex and debilitating disorder characterized by persistent fatigue, musculoskeletal pain, sleep disturbances, and cognitive impairments. The global prevalence is estimated between 0.2% and 0.4%, affecting over 17 million individuals worldwide, with an estimated burden exceeding 40,000 cases in Spain. Despite the exploration of exercise-based rehabilitation as a therapeutic strategy, its clinical efficacy remains a subject of ongoing debate. This study aims to evaluate the effectiveness of exercise-based rehabilitation relative to conventional treatments in improving functional capacity and alleviating fatigue among adults with CFS A systematic review and …
Enhancing Inclusivity In Sports: A Focus On Adaptive Synergy For Disabled Athletes,
2025
Ball State University
Enhancing Inclusivity In Sports: A Focus On Adaptive Synergy For Disabled Athletes, Lawrence W. Judge, Matt Moore, Aidan Biddle, Adam Smith, Donald L. Hoover
International Journal of Exercise Science
International Journal of Exercise Science 18(1): 470-494, 2025. Sport science serves many crucial functions in facilitating improvements in human performance, including advancing inclusivity. This may be realized through the conceptual framework of Adaptive Synergy, which integrates Adapted Physical Activity for athletes with physical disabilities while simultaneously optimizing athletic performance for all individuals. This paper introduces the Adaptive Synergy conceptual framework to sport science, applying this cross-disciplinary concept to biomechanics, exercise physiology, sport psychology, and neuroscience to more specific application of adaptive techniques and methods, which are essential to improving both accessibility and innovation in sports. Key areas of focus include …
The Influence Of Intrinsic Foot Muscles In Modulating Foot Shape Relative To Substrate And The Efficacy Of Different Strengthening Approaches,
2025
James Madison University
The Influence Of Intrinsic Foot Muscles In Modulating Foot Shape Relative To Substrate And The Efficacy Of Different Strengthening Approaches, Luke R. Lotsis
Masters Theses, 2020-current
Cross-sloped surfaces create an asymmetrical substrate for foot contact, introducing a slip force within the transverse plane and a gravitational pull within the coronal plane that increases the tendency to topple downslope. To maintain stability, the foot must make structural adjustments across the hindfoot, midfoot, forefoot, and hallux. In chapter 1, I investigated how IFMs respond to varying substrate conditions and balance demands, providing insight into their functional role in maintaining stability and adapting foot structure in static and dynamic locomotor tasks. Twenty-four healthy adults participated in a series of dynamic walking trials on flat, cross-sloped and sandy substrates and …
Does Limb Specialization In Track And Field Introduce Asymmetry In Dynamic Stability?,
2025
SUNY Cortland
Does Limb Specialization In Track And Field Introduce Asymmetry In Dynamic Stability?, Aaron X. Jones
Master's Theses
Time to stabilization (TTS) represents the time it takes for a person to become still after a hop landing. Lower times suggest greater dynamic stability. Whereas leg dominance (preference) does not seem to have a significant impact on TTS performance in the general healthy populations, limb specialization in sport may introduce asymmetry. This study compares TTS following forward hops in healthy male controls (N = 19) to varsity DIII Track & Field athletes (N = 20). Groups were equal for height, but the athlete group’s average limb length (106.7 ± 5.5 cm) was greater than the control group (101.5 ± …
Evaluation Of Valid Vo2max Criteria For Graded Exercise Testing In Cancer Survivors,
2025
Carroll University
Evaluation Of Valid Vo2max Criteria For Graded Exercise Testing In Cancer Survivors, Daniel Y.K. Shackelford, Jessica M. Brown, Rhianna N. Patel
International Journal of Exercise Science
International Journal of Exercise Science 18(5): 443-455, 2025. Cardiovascular fitness (VO2max) predicts all-cause mortality and is vital to assess in cancer survivors (CS) for individualized exercise prescriptions. Metabolic carts confirm VO2max with respiratory exchange ratio (RER) >1.10; other VO2max criteria include ≤10 beats/minute of maximal predicted heart rate and/or a rating of perceived exertion (RPE) of >8 on the Modified Borg Scale. Another suggested criterion is respiratory frequency (Rf) > 40 breaths per minute. These criteria are assumed applicable for all populations, but due to cancer-related toxicities, frequency and validity of traditional VO2max criteria usage in …
Relationships Between Performance In The Frequency Speed Kick Test, Heart Rate Variability, And Body Composition In Amateur Muay Thai Fighters,
2025
Rehabilitation Sciences Postgraduate Program, Augusto Motta University Center (UNISUAM), Rio de Janeiro, BRAZIL
Relationships Between Performance In The Frequency Speed Kick Test, Heart Rate Variability, And Body Composition In Amateur Muay Thai Fighters, Antonio Beira De Andrade Junior, Elena Marie Peixoto Ruthes De Andrade, Patrícia Dos Santos Vigário, Cesar Antonio Luchesa, João Eduardo De Azevedo Vieira, Igor Ramathur Telles De Jesus, Agnaldo Jose Lopes
International Journal of Exercise Science
International Journal of Exercise Science 18(6): 428-442, 2025. In martial arts, heart rate variability (HRV) measurements can potentially be used to assess injury risk and susceptibility to fatigue. Muay Thai uses the Frequency Speed of Kick Test (FSKT) to measure kick speed, but it is unknown whether better fitness results in improved autonomic function and body composition, which may affect athletic performance and recovery. We aimed to evaluate the correlations between FSKT, HRV, and body composition measures in amateur Muay Thai fighters. This is a cross-sectional study with 37 Muay Thai fighters. They underwent FSKT-10s and multiple FSKT to measure …
Erratum For Effect Of Chronotype On Sleep Quality In A Laboratory Setting,
2025
Alma College
Erratum For Effect Of Chronotype On Sleep Quality In A Laboratory Setting, Brianna Harfmann, Natashia Swalve, John Mitrzyk, Alexander Montoye
International Journal of Exercise Science
No abstract provided.
The Effects Of Palm Cooling On Repeat Sprint Ability Following A Fatigue Inducing Protocol In Collegiate Female Athletes,
2025
Grove City College
The Effects Of Palm Cooling On Repeat Sprint Ability Following A Fatigue Inducing Protocol In Collegiate Female Athletes, Ella Wrabley, Britta Lagerquist, Grace Smith, Rachel Jones, Madeline Mcneilly, Jeff Buxton, Hayden Gerhart, Phillip Prins
International Journal of Exercise Science
International Journal of Exercise Science 18(3): 415-426, 2025. Cooling glabrous skin sites, such as the palms, can mitigate core body temperature rise and delay fatigue during physical activity, potentially enhancing performance. However, research on palm cooling (PC) in female athletes remains limited, and existing devices are often costly or impractical. This study evaluated the effects of PC using a novel, cost-effective portable device on repeat sprint ability in female collegiate athletes after a fatiguing protocol. Twenty female athletes (age: 20.1±1.4 years; height: 166.7±6.9 cm; mass: 66.6±9.8 kg; BMI: 24.0±3.9 kg/m²; body fat: 24.9±4.6%) participated in a randomized crossover study. Sessions …
