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Articles 31 - 60 of 1402
Full-Text Articles in Kinesiology
Low Energy Availability Prevalence, Dietary Habits, And Sleep In Female Army Rotc Cadets, Hannah K. Eberhardt, Brandon D. Willingham, Matthew F. Brisebois, Patrick G. Saracino
Low Energy Availability Prevalence, Dietary Habits, And Sleep In Female Army Rotc Cadets, Hannah K. Eberhardt, Brandon D. Willingham, Matthew F. Brisebois, Patrick G. Saracino
International Journal of Exercise Science
International Journal of Exercise Science 18(6): 1030-1046, 2025. Low energy availability (LEA) results in numerous health and performance decrements. While a high prevalence of LEA and sleep disturbance has been observed in male Army Reserve Officers’ Training Corps (ROTC) cadets, no data exists in females. This study aimed to determine LEA prevalence, dietary habits, and sleep quantity and quality in female U.S. ROTC cadets. Following an overnight fast, ten cadets (22±4 yrs, 166.0±6.1 cm, 67.1±9.1 kg, 26.1±6.2% body fat, 49.2±4.8 kg fat-free mass (FFM)) had their body composition and resting metabolic rate measured. Validated questionnaires assessed LEA symptoms and sleep. …
Accelerations And Emg Differences Between Isocaloric High-Incline Walking And Level-Grade Jogging, Taj Krieger, Motoki Sato, Lex Gidley, Justus Ortega, Eli Lankford
Accelerations And Emg Differences Between Isocaloric High-Incline Walking And Level-Grade Jogging, Taj Krieger, Motoki Sato, Lex Gidley, Justus Ortega, Eli Lankford
International Journal of Exercise Science
International Journal of Exercise Science 18(7): 995-1009, 2025. High-incline walking is a popular mode of exercise and often serves as an alternative to level-grade running for improving cardiovascular fitness. This study examined the muscle activation and biomechanical differences between high-incline walking (HIW) at a 20% grade and level-grade jogging (LGJ) at matched exercise intensities. Nineteen physically inactive adults (18-31 years) participated. Participants completed two isocaloric exercise trials (HIW and LGJ), each lasting ten minutes. EMG data were obtained from eight muscles: biceps femoris (BF), gluteus maximus (GM), lateral gastrocnemius (LG), tibialis anterior (TA), vastus lateralis (VL), anterior deltoid (AD), erector …
Editorial: A Step-By-Step Statistical Decision Framework For A Gender-Inclusive Approach In Sport And Exercise Science Research, James W. Navalta, Dustin W. Davis, Jafra D. Thomas, Whitley J. Stone
Editorial: A Step-By-Step Statistical Decision Framework For A Gender-Inclusive Approach In Sport And Exercise Science Research, James W. Navalta, Dustin W. Davis, Jafra D. Thomas, Whitley J. Stone
International Journal of Exercise Science
International Journal of Exercise Science 18(1): 1010-1029, 2025. The conflation of sex and gender in sport and exercise science research has led to gaps in representation and understanding of gender-inclusive outcomes. This invited editorial presents a framework to guide researchers in conducting statistical analyses that account for multiple gender identities beyond the traditional binary classification. The invited editorial guides deliberation on whether to test for sex or gender differences in sport or exercise science research. It prompts investigators to answer the question, “Is there a valid, literature-supported rationale for investigating sex or gender differences?” If “yes”, we propose approaches that …
The Effect Of A Kn95 Mask On High-Intensity Interval Training Performance, Physiological Response, And Perception, David Kenny, Payton Stanziani, Holly Chambers, Madison Vinovrski, Isabel Allocco, Jack Fisher, Morgan Raley, Kyle S. Beyer
The Effect Of A Kn95 Mask On High-Intensity Interval Training Performance, Physiological Response, And Perception, David Kenny, Payton Stanziani, Holly Chambers, Madison Vinovrski, Isabel Allocco, Jack Fisher, Morgan Raley, Kyle S. Beyer
International Journal of Exercise Science
International Journal of Exercise Science 18(3): 984-994, 2025. The purpose of this study was to assess the effect of a KN95 mask on the performance, physiological response, and perception of high-intensity interval training (HIIT). Twenty college-aged participants (Male: 10, Female: 10) completed a two-visit, crossover, counterbalanced study. The HIIT workout included four 1-minute “all-out” intervals at 3.5% of body mass with 4-minute rest intervals, performed with or without a KN95 mask. Following HIIT, participants remained on the cycle ergometer for a 15-minute recovery period. For each interval, peak power and average power were recorded. Throughout the HIIT workout and recovery, …
Performance Fatigability At Task Failure And Beyond: Distinct Patterns Of Recovery Following Constant Load Versus Intermittent Cycling Exercise, Zachary J. Mcclean, Keenan Macdougall, Matthew J. Jordan, Danilo Iannetta, Martin Macinnis, Saied J. Aboodarda
Performance Fatigability At Task Failure And Beyond: Distinct Patterns Of Recovery Following Constant Load Versus Intermittent Cycling Exercise, Zachary J. Mcclean, Keenan Macdougall, Matthew J. Jordan, Danilo Iannetta, Martin Macinnis, Saied J. Aboodarda
International Journal of Exercise Science
International Journal of Exercise Science 18(7): 971-983, 2025. The total work completed during an exercise session is often assumed to be the primary factor influencing the kinetics of post-exercise recovery. However, the duration of work and rest periods during high intensity interval training (HIIT) have been shown to impact the magnitude of physiological stress and could also impact post-exercise recovery. The aim of this study was to characterize the recovery time course of neuromuscular function following work-to-rest matched HIIT protocols with different work interval durations and conducted to task failure. Participants (n=12, n=6 females) completed a ramp incremental exercise test …
Positive Changes In Functional Capacity, Muscle Strength And Body Composition After Short Time Of Resistance Training Periodization In Older Women: A Quasi-Experimental Study, Ericles Vieira
International Journal of Exercise Science
International Journal of Exercise Science 18(7): 949-970, 2025. We investigated the effects of a new approach with mixed session periodization resistance training (MSP) on functional performance, muscular strength, and body composition in older women. Twenty-one participants were tested before and after the intervention (10 weeks) and were allocated for convenience into two groups according to their available time; our schedule made two classes available, one at 6 a.m. (MSP), and one at 7 a.m. (active group-control). Results were analyzed through a mixed-model analysis with repeated measures. There was a group vs. time interaction for timed up and go (p < 0.001, ηp …
Effects Of Acute Caffeine Ingestion On Physical Performance And Skill Execution In Volleyball Players: A Systematic Review And Meta-Analysis, Raoof Negaresh, Shihab Aldin A. Al-Riyami, Alireza Paahoo, Rastegar Hoseini, Juan Del Coso
Effects Of Acute Caffeine Ingestion On Physical Performance And Skill Execution In Volleyball Players: A Systematic Review And Meta-Analysis, Raoof Negaresh, Shihab Aldin A. Al-Riyami, Alireza Paahoo, Rastegar Hoseini, Juan Del Coso
International Journal of Exercise Science
International Journal of Exercise Science 18(6): 922-948, 2025. It is well established that oral caffeine administration (3-9 mg/kg) is ergogenic, enhancing numerous aspects of physical performance including strength and power. However, the extent to which these effects translate to volleyball-specific skills remains unclear. The purpose of this study was to systematically review the effects of acute caffeine ingestion on performance outcomes in volleyball-specific actions. A systematic review of published studies was conducted using scientific databases from their inception through December 2024 (registered in PROSPERO, CRD420251006314). We included studies with blinded crossover experimental designs that compared caffeine ingestion to a placebo …
Difference In Knee Joint Structure And Lower Extremity Functioning Among People With Varying Severity Of Knee Osteoarthritis: A Cross-Sectional Study, Shubham Tawade, Rajani Mullerpatan Dr., Bela Agarwal Dr.
Difference In Knee Joint Structure And Lower Extremity Functioning Among People With Varying Severity Of Knee Osteoarthritis: A Cross-Sectional Study, Shubham Tawade, Rajani Mullerpatan Dr., Bela Agarwal Dr.
International Journal of Exercise Science
International Journal of Exercise Science 18(5): 910-921, 2025. Osteoarthritis (OA) is a highly prevalent musculoskeletal condition. It is reported that knee OA progressively affects lower-extremity functioning. Evidence is lacking on when there is a substantial decline in function and whether this trend differs between males and females and disease severity. This study aimed to examine influence of gender and increasing grade of knee OA on lower-extremity function. Following Institutional Ethical Committee approval and signed-informed consent, 115 participants (57-males, 58-females), aged 40-65 years, with diagnosed knee OA (grade 1-4) were recruited. Lower-extremity function was studied using reliable and valid outcome …
Biddle Physical Ability Test (Bpat) Performance By Attempt In Southern California Structural Firefighter Candidates, Robert G. Lockie, Joseph Dulla, Jennifer Meloni, Kristina A. Ross, Robin (Rob) Marc Orr, J. Jay Dawes, Tomas J. Ruvalcaba
Biddle Physical Ability Test (Bpat) Performance By Attempt In Southern California Structural Firefighter Candidates, Robert G. Lockie, Joseph Dulla, Jennifer Meloni, Kristina A. Ross, Robin (Rob) Marc Orr, J. Jay Dawes, Tomas J. Ruvalcaba
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 895-909, 2025. The Biddle Physical Ability Test (BPAT) is a job task simulation that must be completed in ≤9:34 min:s by structural firefighter candidates to be accepted to a fire training academy. This study investigated the influence of prior attempts on BPAT time. Retrospective analysis was conducted on 1435 male and 72 female candidates. All participants received equivalent instruction on how to complete the BPAT which incorporated: dry hose drag; charged hose drag; halyard raise; roof walk; attic crawl; roof ventilation; victim removal; ladder removal and carry; stair climb with hose bundle; crawling search; …
Rear Leg-Derived Moment Contributes To Resistance Against Hip Extension In Bulgarian Split Squats, Hiroshi Arakawa, Hikaru Nakashima, Xuanrui Li, Michiya Tanimoto
Rear Leg-Derived Moment Contributes To Resistance Against Hip Extension In Bulgarian Split Squats, Hiroshi Arakawa, Hikaru Nakashima, Xuanrui Li, Michiya Tanimoto
International Journal of Exercise Science
International Journal of Exercise Science 18(7): 881-894, 2025. The Bulgarian split squat (BSS) is a unilateral exercise that emphasizes hip extension more than knee extension, compared to other squat variations. This study aimed to (1) empirically verify the existence of the rear leg-derived moment (MRL)—a theoretically plausible but previously untested external resistive hip moment acting against the net hip extension moment (MHE) of the front leg—and (2) examine how stance width and forward trunk-leaning angles affect MRL during the BSS. Nine trained male participants performed bodyweight BSS under two stance conditions (wide and narrow) and …
Idmatch Bike Fitting Enhances Power Output In Recreational Cyclists: A Pilot Study, Evan T. Hoyt, Gregory N. Ruegsegger
Idmatch Bike Fitting Enhances Power Output In Recreational Cyclists: A Pilot Study, Evan T. Hoyt, Gregory N. Ruegsegger
International Journal of Exercise Science
International Journal of Exercise Science 18(2): 864-880, 2025. Optimizing bike position is essential for enhancing cycling performance, improving comfort, and reducing injury risk. This study examined the acute effects of a bike fit using the idmatch® system on power output, rate of perceived exertion (RPE), and discomfort in recreational cyclists. Twelve participants (10 males, 2 females; 37.0 ± 9.4 years) underwent an idmatch system bike fit, which employs three-dimensional motion capture to optimize rider position. Cyclists completed a six-second peak power test (PPT6) and a 20-minute functional threshold power (FTP) test before and after the fit. Performance metrics (power, …
The Effects Of Exercise Training In A Novel Full-Body Compression Garment On Anaerobic Performance In Healthy Men, Benjamin W. Cunningham, Mikayla M. Reese, Jesse M. Jansen, Benjamin S. Minier, Curtis A. Cornell, Faith C. Benedict, Joshua T. Mayne, Justin A. O'Dell, Gabriel M. Lysak, James R. Sackett
The Effects Of Exercise Training In A Novel Full-Body Compression Garment On Anaerobic Performance In Healthy Men, Benjamin W. Cunningham, Mikayla M. Reese, Jesse M. Jansen, Benjamin S. Minier, Curtis A. Cornell, Faith C. Benedict, Joshua T. Mayne, Justin A. O'Dell, Gabriel M. Lysak, James R. Sackett
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 836-851, 2025. Although acutely donning compression garments improves several markers of athletic performance, the effects of training in compression garments remains largely unexplored. Thus, this study aimed to determine the effects of exercise training while donning a novel full-body compression garment on multiple measures of anaerobic performance. Sixteen sedentary males (age: 21±3 y; BMI: 25±3 kg/m2) completed 4 weeks of training with (CG; n=8) or without (CON; n=8) a novel full-body compression garment. Subjects performed a 40m sprint (time and velocity), a 5-repetition maximum barbell back squat (barbell weight and serratus anterior …
Change In Free-Living Daily Steps Does Not Affect Vo2max Adaptation In Response To A Supervised Aerobic Walking Program In Females Ages 18-45, Catherine L. Jarrett, Brandon J. Sawyer, Wesley Tucker, Dharini M. Bhammar, Justin R. Ryder, Siddhartha Angadi, Glenn A. Gaesser
Change In Free-Living Daily Steps Does Not Affect Vo2max Adaptation In Response To A Supervised Aerobic Walking Program In Females Ages 18-45, Catherine L. Jarrett, Brandon J. Sawyer, Wesley Tucker, Dharini M. Bhammar, Justin R. Ryder, Siddhartha Angadi, Glenn A. Gaesser
International Journal of Exercise Science
International Journal of Exercise Science 18(5): 852-863, 2025. We hypothesized that an increase in nonexercise physical activity (NEPA), assessed by daily steps outside of steps accrued during supervised exercise training sessions, would be positively correlated with the change in VO2max. Females ages 18-45 yr (n = 44; 30 ± 7 yr; 67.7 ± 18.3 kg; 24.9 ± 6.4 kg/m2) completed 36 supervised training sessions on a motorized treadmill (3 sessions/week, 30 min/session) over 12 weeks, at 70% VO2max (80% max heart rate). VO2max was assessed at baseline, 4, 8, and 12 weeks, and …
Comprehensive Fitness Assessment In A Professional Military Education Cohort: A Cross-Sectional Study, Daniel J. Lawson, Russell K. Lowell, C. Brooks Mobley, Katherine Frick, Nicholas C. Bordonie, Kaitlyn G. Clouse, Cameron D. Ott, Harrison C. Dimick, Nicholas R. Mauldin, Joellen M. Sefton
Comprehensive Fitness Assessment In A Professional Military Education Cohort: A Cross-Sectional Study, Daniel J. Lawson, Russell K. Lowell, C. Brooks Mobley, Katherine Frick, Nicholas C. Bordonie, Kaitlyn G. Clouse, Cameron D. Ott, Harrison C. Dimick, Nicholas R. Mauldin, Joellen M. Sefton
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 811-835, 2025. Military personnel face rigorous physical and cognitive demands critical for operational readiness and long-term health. This study evaluated body composition, cognitive performance, and physical fitness metrics in non-entry-level service members to inform tailored fitness interventions. This cross-sectional study analyzed data from Air Command Staff College personnel (N = 307; 89 females, 218 males; age: 37 ± 5 years) at Air University, Maxwell Air Force Base. Participants completed assessments for body composition (body mass index [BMI], body fat percentage [%BF], fat mass index [FMI], fat-free mass index [FFMI]), flexibility (sit-and-reach test, functional reach …
Validity And Reliability Of The 'Feelfit®' Accelerometer In Evaluating Physical Activity And Sedentary Time In Children: A Comparative Study With Two Different Accelerometers, Songdhasn Chinapong, Korntawat Klinchan, Hanif Abdul Rahman, Michael Chia, Waris Wongpipit, Jetsada Arnin, Areekul Amornsriwatanakul
Validity And Reliability Of The 'Feelfit®' Accelerometer In Evaluating Physical Activity And Sedentary Time In Children: A Comparative Study With Two Different Accelerometers, Songdhasn Chinapong, Korntawat Klinchan, Hanif Abdul Rahman, Michael Chia, Waris Wongpipit, Jetsada Arnin, Areekul Amornsriwatanakul
International Journal of Exercise Science
International Journal of Exercise Science 18(2): 794-810, 2025. Accurate physical activity (PA) measurement is crucial for public health surveillance. While self-report questionnaires are commonly used, they have limitations, especially in young children. An affordable and user-friendly device like Feelfit® offers a promising alternative particularly for countries with limited research resources. This study aimed to evaluate Feelfit®’s performance against the widely used ActiGraph® accelerometer in measuring PA among children. A quasi-experimental design was applied. Thirty-nine children (19 boys; 20 girls; aged 11.4 ± 0.5 years) wore both Feelfit® and ActiGraph® during sequentially specified activities of varying intensity ranging from sedentary to …
Differences In Fitness Between Cadet And General Population Firefighter Academy Recruits, Scott D. Brau, David Cornell, Benjamin J. Mendelson, Rudi A. Marciniak, Kyle Ebersole
Differences In Fitness Between Cadet And General Population Firefighter Academy Recruits, Scott D. Brau, David Cornell, Benjamin J. Mendelson, Rudi A. Marciniak, Kyle Ebersole
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 774-793, 2025. This longitudinal study explored entry route- and age-related fitness differences between cadet (CR) and general population (GR) firefighter recruits. Fitness data were collected from eight separate firefighter recruit academy cohorts (N = 317; 122 CR, 195 GR; 27.17 ± 7.58 yrs, 177.30 ± 8.72 cm, 88.65 ± 17.78 kg). In the first week of the academy, recruits completed an assessment battery including: body composition via skinfold measures to estimate body fat (BF, %) and fat-free mass (FFM, kg); aerobic fitness (VO2peak, mL· kg-1· min-1) and …
Associations Of Laboratory- And Field- Derived Measurements Of Critical Power With W’-Kinetics During 40-Km Cycling Time Trial Performances, Dewey Luke Wilkins, Robert W. Pettitt, Julie Taylor, Mark Kramer
Associations Of Laboratory- And Field- Derived Measurements Of Critical Power With W’-Kinetics During 40-Km Cycling Time Trial Performances, Dewey Luke Wilkins, Robert W. Pettitt, Julie Taylor, Mark Kramer
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 757-773, 2025. This study aimed to establish whether a laboratory (lab) based 3-minute all-out (3MT) protocol and a field-based 3MT protocol would yield similar peak power (Pmax), critical power (CP), and curvature constant (W’) profiles and the implications of parameter estimation for informing a 40-km time trial (TT) performance. Nine competitive male cyclists (mean ± SD: age 36.5 ± 10.42 y, mass = 80.5 ± 10.6 kg, height 1.8 ± 0.1 m) completed two 3MTs on separate days, as well as a 40-km time trial. Both lab and field-based protocols evoked similar …
Screen Time And Objectively Measured Sleep Of U.S. College Students: A Brief Report, Donya Sedaghat, Eunkyung Lee, Jeanette Garcia, Keith Brazendale
Screen Time And Objectively Measured Sleep Of U.S. College Students: A Brief Report, Donya Sedaghat, Eunkyung Lee, Jeanette Garcia, Keith Brazendale
International Journal of Exercise Science
International Journal of Exercise Science 18(4): 747-756, 2025. The objective was to investigate screen time (ST) and objectively measured sleep quality in college students. Participants were undergraduate students attending a large metropolitan public university in the southeastern U.S. Participants wore accelerometers on their wrist for 24hr/day for 14 days to capture sleep outcomes, and completed a survey reporting ST duration. Analyses explored weight-status, race/ethnicity, and sleep patterns (presence of daytime sleep) differences among students. Participants (n=29, 86% female, ~21.5 years old, 38% White, 35% Overweight/Obese) slept for an average of 433.8 minutes/night, reported 419.1 minutes of daily ST, and 112 …
Blood Flow Restriction Use By U.S. Physical Therapists: A Survey On Settings, Equipment, And Adverse Effects, Alyssa Weatherholt, William R. Vanwye, Netra Patel, Alexandria Humphrey
Blood Flow Restriction Use By U.S. Physical Therapists: A Survey On Settings, Equipment, And Adverse Effects, Alyssa Weatherholt, William R. Vanwye, Netra Patel, Alexandria Humphrey
International Journal of Exercise Science
International Journal of Exercise Science 18(5): 736-746, 2025. Blood flow restriction (BFR) combined with exercise has been shown to enhance muscle hypertrophy, strength, and aerobic capacity. While previous studies have evaluated the use of BFR among various practitioners, none have investigated its use exclusively among licensed U.S. physical therapists (PTs). A cross-sectional survey was distributed electronically to licensed U.S. PTs. Participants were required to use BFR currently in clinical practice. Survey items included respondents' demographics, practice setting, exercise mode, the type of BFR equipment used, and adverse events. A total of 134 licensed PTs from 20 states completed the survey. …
Exploring Changes In Body Composition Before And After A National Collegiate Athletic Association Division I Football Season Of Marching Artists, Noelle J. Smith, Brett Nickerson, Ronald L. Snarr, Matt P. Brancaleone
Exploring Changes In Body Composition Before And After A National Collegiate Athletic Association Division I Football Season Of Marching Artists, Noelle J. Smith, Brett Nickerson, Ronald L. Snarr, Matt P. Brancaleone
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 727-735, 2025. The purpose of this study was to observe the changes in body composition of collegiate marching band artists after a competitive season NCAA Division I football season. Thirty-seven marching artists (7 females, 31 males; age: 21.5 (1.4) years; height: 177.2 (9.5) cm had body fat percentage (BF%), fat mass (FM), android adiposity, gynoid adiposity, bone mineral content (BMC), and lean soft tissue (LST) measured before and after a competitive season of Division I football. Body composition measures were conducted using single-frequency bioelectrical impedance analysis device (Quantum IV, RJL systems, Clinton MI). Pre- …
Comparison Of Kinematic Outputs And Reliability Of Plug-In Gait Versus Conventional Gait Model 2 During Cycling, Erin Mccallister, Nicholas Russell
Comparison Of Kinematic Outputs And Reliability Of Plug-In Gait Versus Conventional Gait Model 2 During Cycling, Erin Mccallister, Nicholas Russell
International Journal of Exercise Science
International Journal of Exercise Science 18(7): 712-726, 2025. Motion analysis is used to measure proper bicycle fit, avoid injury, and improve cycling performance. Small changes in position can impact joint kinematics and risk for overuse injury. Concerns regarding the often-used biomechanical model Plug-in-Gait (PIG) resulted in the creation of Conventional Gait Model 2 (CGM2). This study aims to compare kinematic outputs of these two models for cycling biomechanics plus between-day reliability of each model. Thirty-five participants participated in two experimental sessions. PiG and CGM2 marker sets were applied, and data was collected while cycling between 80-90 rpm. Model outputs were …
Effects Of Aerobic Exercise On Physical Fitness In Obesity Using Fox Vs. Tanaka’S Maximum Heart Rate And Percentage Vs. Karvonen Methods, Maninthorn Rugbumrung, Tavarintorn Rukbumrung, Sittiwit Impanya, Adison Thurayot
Effects Of Aerobic Exercise On Physical Fitness In Obesity Using Fox Vs. Tanaka’S Maximum Heart Rate And Percentage Vs. Karvonen Methods, Maninthorn Rugbumrung, Tavarintorn Rukbumrung, Sittiwit Impanya, Adison Thurayot
International Journal of Exercise Science
International Journal of Exercise Science 18(8): 695-711, 2025. The intensity of aerobic exercise is influenced by maximum heart rate (MHR), which can be assessed through an incremental exercise test. However, this method requires specialized equipment and a level of fitness that individuals who are sedentary or overweight may lack. Therefore, estimating MHR using formulas is essential. Various methods exist to calculate MHR, but their effects on fitness in obese individuals remain unclear. This study aimed to investigate the effects of aerobic exercise using different intensity calculation methods, specifically comparing Fox's and Tanaka's maximum heart rate (MHR) equations, as well as …
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
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, Tarine Botta De Arruda, Felipe Alves Ribeiro Ms, Germano Marcolino Putti, Marcelo Papoti
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, Bethany C. Guerra, Steven E. Martin, Lisa C. Colvin, J. Jay Dawes, Matthew J. Mcallister, Drew E. Gonzalez
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, David M. Werner, Liubov Arbeeva, Yvonne M. Golightly, Balarinivasa R. Sajja, Michael D. Rosenthal, Matthew Tao, Elizabeth Wellsandt
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, Jennifer Rivera, Edward Pelka, Ryan Gant, Anthony G. Pinzone, Emily C. Tagesen, Modesto A. Lebron, Adam R. Jajtner
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, Alfonso Penichet-Tomas, Sergio Calavia-Carvajal, Basilio Pueo, Lamberto Villalon-Gasch
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, Haley Roberts, Yvette Figueroa, Jennifer Bunn, Patrick Davis
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), Sergio A. Caicedo-Parada, Enrique Ortega, Jose M. Palao
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 …