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Mental Effort Responses To Low Cognitive Load Stimuli During Euhydrated Versus Hypohydrated Fatigue State, Austin Dunn, Lily Hargrove, James Rowe, Luis Aguerrevere, Eric Jones Feb 2026

Mental Effort Responses To Low Cognitive Load Stimuli During Euhydrated Versus Hypohydrated Fatigue State, Austin Dunn, Lily Hargrove, James Rowe, Luis Aguerrevere, Eric Jones

International Journal of Exercise Science: Conference Proceedings

Improper body water regulation contributes to physiological changes, affects mood states, and impacts regulation of behavioral responses. With improvements in eye tracking technology (fixation duration and pupil diameter), the ability to quantify focal points and mental effort has expanded greatly. PURPOSE: To examine the effects that fatigue states and hydration, (euhydrated (Eu) vs. hypohydrated (Hypo)), has on average fixation duration and pupil diameter using five separate low cognitive load hydration stimuli. METHODS: Six college aged males underwent two trials of active fatigue/dehydration in an environmental chamber at 35℃ until 2% body water loss was achieved. Fluid restriction and ad-libitum consumption …

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Nirs-Vot Measures That Relate To Hyperemic Peak Velocity, William M. Kerr, Kase J. Pennartz, Ethan J. Hein, Justin D. Sprick, Joshua L. Keller Feb 2026

Nirs-Vot Measures That Relate To Hyperemic Peak Velocity, William M. Kerr, Kase J. Pennartz, Ethan J. Hein, Justin D. Sprick, Joshua L. Keller

International Journal of Exercise Science: Conference Proceedings

Early identification of individuals at risk for future adverse cardiovascular events, such as myocardial infarction and stroke, is critical for implementing targeted interventions that preserve physical function and independence. Microvascular function has emerged as a key marker of cardiovascular risk; however, multiple techniques exist to assess reactive hyperemia. Ultrasound-derived brachial artery hyperemic peak velocity (HPV) following cuff release has previously been associated with cardiovascular outcomes, with higher velocities corresponding to a nearly 50% reduction in risk. However, it remains unclear which near-infrared spectroscopy (NIRS)–derived skeletal muscle tissue oxygenation (StO2, %) responses quantified during a vascular occlusion test (VOT) …

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Exploring A Live-Streamed Audience’S Impact On Performance, Rating Of Perceived Exertion, And Social Physique Anxiety During The Ymca Bench Press Test, Daimien J. Campos, Amber M. Shipherd, Christopher M. Hearon Feb 2026

Exploring A Live-Streamed Audience’S Impact On Performance, Rating Of Perceived Exertion, And Social Physique Anxiety During The Ymca Bench Press Test, Daimien J. Campos, Amber M. Shipherd, Christopher M. Hearon

International Journal of Exercise Science: Conference Proceedings

The presence of an audience impacts exercise performance, rating of perceived exertion (RPE), and social physique anxiety (SPA) through self-presentation theory. Research has found physical audiences influence exercise performance, RPE, and SPA, whereas recorded digital audiences show increased SPA but no changes to performance or RPE. Given audience visibility appears necessary for these changes to occur, live-streaming platforms, an unexplored area in research, may offer a viable alternative by providing real-time viewer feedback. PURPOSE: To investigate the effects of a live-streamed audience on physically active males’ and females’ exercise performance, RPE, and SPA during a YMCA bench press test. METHODS: …

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Do Different Practice Approaches Affect Intrinsic Motivation Based On A Goal-Directed Behavior?, Elissa D. Torres-Colon, Anthony W. Fava, Emily J. Sauers Feb 2026

Do Different Practice Approaches Affect Intrinsic Motivation Based On A Goal-Directed Behavior?, Elissa D. Torres-Colon, Anthony W. Fava, Emily J. Sauers

International Journal of Exercise Science: Conference Proceedings

Optimizing motivation leads to enhanced motor performance and improved psychological health in human performers. However, the influence of the type of practice approach on intrinsic motivation among softball pitchers when they learn new pitches is less clear. PURPOSE: To compare intrinsic motivation in adolescent softball pitchers following a practice session using two different practice approaches. METHODS: Fifty adolescent-aged softball pitchers seeking to obtain a breaking pitch (drop ball) were randomly assigned into two practice designs, each with the same goal-directed behavior of “creating as much downward vertical break on the ball as possible.” One group practiced using a …

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Sex Differences In Pre-Cooling Effect On Cognitive Processing Changes During Exercise In The Heat, Kristin N. Grabow, Amber M. Shipherd, Meral N. Culver, Christopher M. Hearon Feb 2026

Sex Differences In Pre-Cooling Effect On Cognitive Processing Changes During Exercise In The Heat, Kristin N. Grabow, Amber M. Shipherd, Meral N. Culver, Christopher M. Hearon

International Journal of Exercise Science: Conference Proceedings

Cognitive processing (CP) declines during exercise are greater in the heat, but precooling (PC) prior to exercise in the heat can attenuate this decline. While males (M) and females (F) do not differ with regard to the impact of PC on thermoregulatory variables during exercise in the heat, F do demonstrate better perceptional values than M when using PC prior to exercise in the heat. Thus, if perceptional values potentially impact CP during exercise in the heat, then the PC impact on that response could differ between M and F. PURPOSE: The purpose of this study was to compare sex …

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The Effects Of Multiple Circuit Training Sessions In Hot Compared To Thermoneutral Environmental Conditions On Environmental Symptomology, Jenna King, Ryan Dunn, Alexandra Brojanac, Mario Hernandez, Yasuki Sekiguchi Feb 2026

The Effects Of Multiple Circuit Training Sessions In Hot Compared To Thermoneutral Environmental Conditions On Environmental Symptomology, Jenna King, Ryan Dunn, Alexandra Brojanac, Mario Hernandez, Yasuki Sekiguchi

International Journal of Exercise Science: Conference Proceedings

Heat acclimation (HA) protocols have been under constant development since the 20th century, with the optimal HA approach yet to be determined. Adaptations from traditional approaches likely favor aerobic performance due to the nature of low- to moderate-intensity, endurance-based exercise in the heat. However, individuals involved in team sports, military personnel, and occupational workers may benefit from adaptations induced by a HA protocol that is more sport-/activity-specific. PURPOSE: To investigate differences in environmental symptomatology during a circuit training session in the heat (35°C; 40% relative humidity [RH]) following short-term (5 day) circuit training in hot and thermoneutral environmental conditions. METHODS: …

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Effects Of Age And Sex On Reaction Time In Masters Track And Field Athletes, Yanbing Zhou, Natalie Mclaurin, Jonas Boecker, Phil Chilibeck, Tanja Taivassalo, Sean Forbes, Dominik Pesta, Jörn Rittweger, Hirofumi Tanaka Feb 2026

Effects Of Age And Sex On Reaction Time In Masters Track And Field Athletes, Yanbing Zhou, Natalie Mclaurin, Jonas Boecker, Phil Chilibeck, Tanja Taivassalo, Sean Forbes, Dominik Pesta, Jörn Rittweger, Hirofumi Tanaka

International Journal of Exercise Science: Conference Proceedings

Reaction time (RT) is a key indicator of cognitive processing speed and plays a critical role in athletic performance.  Investigating RT in masters athletes can provide valuable insight as it may help disentangle age-related cognitive processing from physical decline.  However, it is unknown whether masters athletes exhibit age-related declines in RT and whether sex and task complexity modulate these changes.  PURPOSE: To evaluate RT in male and female masters track-and-field athletes varying in age.   METHODS: One hundred and eighty-two masters athletes were recruited from the 2025 World Masters Athletics Indoor Track and Field Championships in Florida.  Four RT …

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Expanding Understanding Of Age-Related Differences In Cardiorespiratory Fitness And Body Composition Among Firefighters: A Single, Large-Scale, Metropolitan-Departmental Study, Jisun Chun, Kelly Hines, Michael J. Conner, Brian Newman, Lisa C. Colvin, Steven E. Martin, Drew E. Gonzalez Feb 2026

Expanding Understanding Of Age-Related Differences In Cardiorespiratory Fitness And Body Composition Among Firefighters: A Single, Large-Scale, Metropolitan-Departmental Study, Jisun Chun, Kelly Hines, Michael J. Conner, Brian Newman, Lisa C. Colvin, Steven E. Martin, Drew E. Gonzalez

International Journal of Exercise Science: Conference Proceedings

While prior research has examined age-related changes in small firefighter (FF) cohorts, large-scale analyses are needed to clarify the effects of aging on cardiorespiratory fitness (CRF) and body composition (BC). PURPOSE: To examine age-related differences in CRF and BC among FF across four age groups. METHODS: Four hundred and ninety-nine FF completed a cycle ergometer cardiopulmonary exercise test (CPET) and bioelectrical impedance via an InBody BC assessment. Age group sizes were as follows: 20-29s = 62; 30-39s = 162; 40-49s = 153; and 50+ = 122. A general linear model (GLM) was used to evaluate the effects of …

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Associations Between Body Roundness Index And Cardiovascular Disease Risk Indices Among First Responders?, Raed Alfaleet, Samantha Umfrid, Michael Conner, Steven E. Martin, Matthew J. Mcallister, Lisa C. Colvin, Drew E. Gonzalez Feb 2026

Associations Between Body Roundness Index And Cardiovascular Disease Risk Indices Among First Responders?, Raed Alfaleet, Samantha Umfrid, Michael Conner, Steven E. Martin, Matthew J. Mcallister, Lisa C. Colvin, Drew E. Gonzalez

International Journal of Exercise Science: Conference Proceedings

First responders are in critical need of simple and cost-effective methods for pragmatic health assessments to help mitigate the risk of cardiovascular disease (CVD). The Body Roundness Index (BRI) has emerged over the last decade as a potential tool for assessing overall health. However, this method has yet to be applied among first responder groups. PURPOSE: We compared CVD risk biomarkers across BRI quartile groups. METHODS: Archival data for 170 (n = 170) first responders were analyzed from annual clinical testing. The BRI was used categorically; participants were grouped into quartiles as follows: Q1 (<3.1), Q2 (3.1 – 3.7), Q3 (3.7 – 4.6), and Q4 (>4.6). To calculate …

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Impact Of Age On Non-Conventional Physiological Stress, Oxidative Stress, And Inflammatory Biomarkers Among First Responders, Ethan C. Mccarty, Samantha Umfrid, Michael Conner, Steven E. Martin, Lisa C. Colvin, Matthew J. Mcallister, Drew E. Gonzalez Feb 2026

Impact Of Age On Non-Conventional Physiological Stress, Oxidative Stress, And Inflammatory Biomarkers Among First Responders, Ethan C. Mccarty, Samantha Umfrid, Michael Conner, Steven E. Martin, Lisa C. Colvin, Matthew J. Mcallister, Drew E. Gonzalez

International Journal of Exercise Science: Conference Proceedings

Previous studies have examined age-related CVD risk factors in small first-responder (FR) groups but haven't explored how age influences non-traditional stress markers and inflammation biomarkers. PURPOSE: To examine age-related differences in non-conventional physiological stress, oxidative stress, and inflammatory biomarkers among FRs. METHODS: Archival data for 170 FRs were analyzed from annual clinical testing. Age groups were 20-39 years and 40 years and above. General linear models (GLMs) were used to evaluate the effects of age group and occupational group on blood and salivary biomarkers: advanced oxidation protein products (AOPP), C-reactive protein (CRP), blood cortisol (CORT), salivary cortisol (sCORT), …

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Impacts Of Perceived Trauma On Occupational Performance Among Firefighters And Law Enforcement Officers, Pedro Caniz, Ashley Khanhkham, Steven E. Martin, Lisa C. Colvin, Michael Conner, Drew Gonzalez Feb 2026

Impacts Of Perceived Trauma On Occupational Performance Among Firefighters And Law Enforcement Officers, Pedro Caniz, Ashley Khanhkham, Steven E. Martin, Lisa C. Colvin, Michael Conner, Drew Gonzalez

International Journal of Exercise Science: Conference Proceedings

First responders (FRs) frequently face traumatic incidents, which can lead to posttraumatic stress, emotional exhaustion, and decreased job performance. Although tactical teams are more vulnerable to trauma-related mental health problems, there is limited research on how perceived trauma and coping self-efficacy influence perceived barriers to seeking help. PURPOSE: To assess perceived trauma exposure, symptom severity, coping self-efficacy, and help-seeking barriers among U.S. FRs. METHODS: A nationwide online survey was distributed via email and social media to recruit active FRs. The survey collected demographic data, years of service, trauma exposure, the PTSD Diagnostic Scale for DSM-5 (PDS-5), and the …

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Impact Of Body Mass Index On Non-Conventional Physiological Stress, Oxidative Stress, And Inflammatory Biomarkers Among Fire Responders, Natania Hsyung, Samantha Umfrid, Michael Conner, Steven E. Martin, Lisa C. Colvin, Matthew J. Mcallister, Drew Gonzalez Feb 2026

Impact Of Body Mass Index On Non-Conventional Physiological Stress, Oxidative Stress, And Inflammatory Biomarkers Among Fire Responders, Natania Hsyung, Samantha Umfrid, Michael Conner, Steven E. Martin, Lisa C. Colvin, Matthew J. Mcallister, Drew Gonzalez

International Journal of Exercise Science: Conference Proceedings

Firefighters and responders face stress from activity, irregular hours, and hazards, raising obesity and cardiometabolic risks. Higher BMI is linked to inflammation and oxidative stress, but few studies examine these in tactical groups using unconventional biomarkers. Studying BMI-related markers could identify early signs of stress and aid in developing tailored wellness program strategies. PURPOSE: Archival data for 170 (n = 170) first responders were analyzed from annual clinical testing. BMI groups were considered. The first responders were stratified into three BMI groups: “healthy” (18.5–24.9 kg/m2), “overweight” (25.0–29.9 kg/m2), and “obese” (≥30.0 kg/m2). General linear models (GLM) were …

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Bone Mineral Density In Physique- Focused And Non-Physique Focused Female Collegiate Athletes: Associations With Reds Risk Factors, Diana E. Kolb, Nicole L. Cipriano, Ross A. Moody, Jason A. Stephens, Martin R. Lindley, Megan E. Ware, Lydia K. Caldwell, Sarah Deemer Feb 2026

Bone Mineral Density In Physique- Focused And Non-Physique Focused Female Collegiate Athletes: Associations With Reds Risk Factors, Diana E. Kolb, Nicole L. Cipriano, Ross A. Moody, Jason A. Stephens, Martin R. Lindley, Megan E. Ware, Lydia K. Caldwell, Sarah Deemer

International Journal of Exercise Science: Conference Proceedings

Bone mineral density (BMD) is a critical indicator of skeletal health and long-term injury risk in athletic populations. Female athletes are susceptible to changes in BMD due to sport-specific training demands, hormonal dysregulation, and energy availability. PURPOSE: The present study aimed to compare BMD between physique focused (PF) and non-physique focused (NPF) female collegiate athletes and assess the prevalence of various risk factors associated with Relative Energy Deficiency in Sport (REDs) across both groups. METHODS: Thirty-three female athletes were evaluated for BMD via Dual-energy X-ray Absorptiometry (DXA), REDs risk using the CAT2, and anthropometric measurements, blood biomarkers, the Eating Disorder …

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Fitness Profiles Of Firefighters Who Reported Workers' Compensation: Are Those Who Filed Fit For Duty, Sage A. Newman, Kaitlyn J. Mchahan, Kelly Hines, Newman Brian, Micheil Spillane, Michael J. Conner, Drew Gonzalez Feb 2026

Fitness Profiles Of Firefighters Who Reported Workers' Compensation: Are Those Who Filed Fit For Duty, Sage A. Newman, Kaitlyn J. Mchahan, Kelly Hines, Newman Brian, Micheil Spillane, Michael J. Conner, Drew Gonzalez

International Journal of Exercise Science: Conference Proceedings

Firefighting demands physical resilience, such as good aerobic capacity (AC) and a healthy body composition, to prevent injuries. Excess fat and low lean mass increase MSK injury risk, mainly strains and sprains. Knowing AC and body factors linked to injuries can help reduce the risk of strain. PURPOSE: We compared the AC profiles of those who filed for workers' compensation (WC) to those who did not. METHODS: Archival data for four hundred and ninety-nine (n = 499) career male (n = 466) and female (n = 28) firefighters were analyzed from annual clinical testing. AC profiles (i.e., VO …

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Evaluating The Relationship Between Nutrition Knowledge And Dietary Guideline Adherence In Rotc Cadets, Sheyla Leon, Michael J. Conner, Lisa C. Colvin, Steven E. Martin, Stella L. Volpe, Drew Gonzalez Feb 2026

Evaluating The Relationship Between Nutrition Knowledge And Dietary Guideline Adherence In Rotc Cadets, Sheyla Leon, Michael J. Conner, Lisa C. Colvin, Steven E. Martin, Stella L. Volpe, Drew Gonzalez

International Journal of Exercise Science: Conference Proceedings

Limited data exist on the overall and sports nutrition knowledge among Reserve Officer Training Corps (ROTC) cadets across different body mass index (BMI) categories. PURPOSE: We compared the general and sports nutrition knowledge of ROTC cadets across BMI groups. METHODS: Cross-sectional data from 184 ROTC cadets were analyzed using questionnaires like PBHE, FCQ, and REAPS. BMI grouped cadets: underweight (<18.5 kg/m²), healthy (18.5–24.9), overweight (25.0–29.9), and obese (≥30.0)—normality tests (Shapiro-Wilk for underweight, overweight, obese; Kolmogorov-Smirnov for healthy) assessed data distribution. Due to deviations from normality, Welch’s ANOVA tested group differences, with Games-Howell post hoc. Effect sizes were measured by eta squared (η2): 0.01 small, 0.06 medium, 0.14 large. Pairwise BMI differences were presented as mean differences with 95% CIs. RESULTS: Differences were noted among BMI groups (as tallied totals and percentages) in knowledge of general nutrition (p=0.026; η2 = 0.071), fluid intake (p=0.048; η2 = 0.064), and sports nutrition (p=0.048; η2 = 0.056). Games-Howell post hoc …

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Beyond Age And Fitness: Modeling Metabolic And Vascular Predictors Of Vo₂Max In Firefighters Using Glm And Gam Approaches, Yuhang Liu, Michael J. Conner, Newman Brian, Lisa C. Colvin, Steven E. Martin, Drew Gonzalez Feb 2026

Beyond Age And Fitness: Modeling Metabolic And Vascular Predictors Of Vo₂Max In Firefighters Using Glm And Gam Approaches, Yuhang Liu, Michael J. Conner, Newman Brian, Lisa C. Colvin, Steven E. Martin, Drew Gonzalez

International Journal of Exercise Science: Conference Proceedings

While aerobic capacity (VO2max) is vital for cardiovascular and metabolic health, limited evidence exists on how physical performance, body composition, and biochemical markers jointly predict aerobic fitness in firefighters. Combining these indicators may improve understanding of VO2max variability and aid strategy development to reduce cardiometabolic risk. PURPOSE: This study investigates how body composition, physical performance, and blood biomarkers relate to VO2max in firefighters, with the aim of developing predictive models to optimize health and performance. METHODS: 170 firefighters were analyzed. Variance inflation factors (VIFs) were used to check predictor independence. General linear …

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How Do Firefighters Differ Between Years Of Fire Service Experience: Part 2 – Body Composition Profiles, Nathaniel D. Rhoades, Michael J. Conner, Jacob A. Mota, Payton E. Miller, Steven E. Martin, Lisa C. Colvin, Drew E. Gonzalez Feb 2026

How Do Firefighters Differ Between Years Of Fire Service Experience: Part 2 – Body Composition Profiles, Nathaniel D. Rhoades, Michael J. Conner, Jacob A. Mota, Payton E. Miller, Steven E. Martin, Lisa C. Colvin, Drew E. Gonzalez

International Journal of Exercise Science: Conference Proceedings

Firefighters (FF) face a higher risk of cardiovascular disease (CVD) due to aging, job-related stress, and irregular physical activity. Years of experience (YXP) in the fire service have been shown to have a unique impact on FF health and performance; however, profiling the differences between those with less or more YXP has not yet been assessed. PURPOSE: To examine YXP-related differences in conventional body composition parameters among firefighters. METHODS: Archival data from annual clinical testing of 142 male firefighters were analyzed (33.4±8.6 years; 29.3±4.1 kg/m2; 38.8±6.9 mL/kg/min). Groups were considered to be those with <5 YXP and >5 YXP. General linear …

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Do Body Composition And Cardiovascular Fitness Differ By Gender In Firefighters?, Giuliet L. Kibler, Kelly Hines, Michael J. Conner, Lisa C. Colvin, Steven E. Martin, Drew E. Gonzalez Feb 2026

Do Body Composition And Cardiovascular Fitness Differ By Gender In Firefighters?, Giuliet L. Kibler, Kelly Hines, Michael J. Conner, Lisa C. Colvin, Steven E. Martin, Drew E. Gonzalez

International Journal of Exercise Science: Conference Proceedings

Firefighters (FF) endure substantial cardiovascular stress during their occupational tasks; yet, males and females differ in cardiovascular fitness (CRF) due to biological factors. The differences in body composition (BC) and CRF among FFs remain unclear. PURPOSE: To compare gender-specific outcomes in body BC and cardiopulmonary exercise test (CPET) of FF. METHODS: BC assessments via BIA and CPET on a cycle ergometer for 509 FF were analyzed from annual clinical testing. Gender was self-reported as follows: female (n = 29), male (n = 476), or other (n = 4). BC metrics, including body fat, lean body mass, skeletal muscle …

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How Do Firefighters Differ Between Years Of Fire Service Experience: Part 1 - Physical Fitness Profiles, Ian Bivins, Michael J. Conner, Jacob A. Mota, Payton Miller, Steven E. Martin, Lisa C. Colvin, Drew Gonzalez Feb 2026

How Do Firefighters Differ Between Years Of Fire Service Experience: Part 1 - Physical Fitness Profiles, Ian Bivins, Michael J. Conner, Jacob A. Mota, Payton Miller, Steven E. Martin, Lisa C. Colvin, Drew Gonzalez

International Journal of Exercise Science: Conference Proceedings

Firefighters (FF) face a higher risk of cardiovascular disease (CVD) due to aging, job-related stress, and irregular physical activity. Years of experience (YXP) in the fire service have been shown to have a unique impact on FF health and performance; however, profiling the differences between those with less or more YXP has not yet been assessed. PURPOSE: To examine years of experience-related differences in conventional physical fitness parameters among FFs. METHODS: Archival data from annual clinical testing of 142 FFs were analyzed. Groups were defined as those with 5 YXP. General linear models (GLM) were used for multivariate …

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Evaluating Self-Reported Dietary Habits And Barriers Among Rotc Cadets Across Body Mass Index Classifications, Sarah E. Johnson, Sheyla Leon, Michael Conner, Lisa Colvin, Steven Martin, Stella Volpe, Drew Gonzalez Feb 2026

Evaluating Self-Reported Dietary Habits And Barriers Among Rotc Cadets Across Body Mass Index Classifications, Sarah E. Johnson, Sheyla Leon, Michael Conner, Lisa Colvin, Steven Martin, Stella Volpe, Drew Gonzalez

International Journal of Exercise Science: Conference Proceedings

Limited data exist on the overall and sports nutrition knowledge among Reserve Officer Training Corps (ROTC) cadets across different body mass index (BMI) categories. PURPOSE: We aimed to study ROTC cadets' dietary habits and barriers across BMI groups. METHODS: Cross-sectional data were obtained from 184 ROTC cadets regarding validated questionnaires, such as the Perceived Barriers to Healthy Eating (PBHE), Food Choice Questionnaire (FCQ), and Rapid Eating Assessment for Participants-Short Version (REAPS). The cadets were stratified into body mass index (BMI) groups: underweight (RESULTS: Chi-square analyses showed BMI-related differences in responses to REAPS' breakfast skipping question (χ²=14.289, p=0.027, V=0.199), …

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Evaluating The Relationship Between Nutrition Knowledge And Dietary Guideline Adherence In Rotc Cadets, Emily C. Holbrook, Sheyla Leon, Michael J. Conner, Lisa C. Colvin, Steve E. Martin, Tabbetha Lopez, Stella L. Volpe, Drew E. Gonzalez Feb 2026

Evaluating The Relationship Between Nutrition Knowledge And Dietary Guideline Adherence In Rotc Cadets, Emily C. Holbrook, Sheyla Leon, Michael J. Conner, Lisa C. Colvin, Steve E. Martin, Tabbetha Lopez, Stella L. Volpe, Drew E. Gonzalez

International Journal of Exercise Science: Conference Proceedings

There is limited research on the nutrition knowledge of Reserve Officers’ Training Corps (ROTC) cadets compared to their adherence to recommended dietary guidelines. PURPOSE: We assessed the nutrition knowledge of ROTC cadets and examined its association with dietary intake. METHODS: Cross-sectional data were obtained from 206 ROTC cadets regarding sports performance and nutrition supplementation knowledge via the validated paper-based questionnaire, Nutrition Knowledge Questionnaire for Athletes (NKQA), and Rapid Eating Assessment for Participants [shortened version] (REAP-S). The questionnaire data were analyzed with a Chi-Square test for overall response in the NKQA and REAP-S. The correct responses (as percentages) for …

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A Comparison Of The Abdominal Contraction Bracing Method (Cbm) And The Glass Cup Abdominal Bracing Method (Gcm), Michael H. Bellot, Daniel Chilek, Shannon Jordan Feb 2026

A Comparison Of The Abdominal Contraction Bracing Method (Cbm) And The Glass Cup Abdominal Bracing Method (Gcm), Michael H. Bellot, Daniel Chilek, Shannon Jordan

International Journal of Exercise Science: Conference Proceedings

Anterior contraction of the core muscles for bracing and creating spinal stiffness has existed for centuries. This method of bracing, called Valsalva, referred to as Abdominal Contraction Bracing Method (CBM) in this study, is widely accepted and used for nearly any type of lifting. As CBM primarily contracts the Rectus & Transverse Abdominus, a newly developed bracing form called the Glass Cup Method (GCM) contracts the Rectus & Transverse Abdominus, External & Internal Oblique, and Quadratus Lumborum against strong Intra-Abdominal Pressure (IAP) via inhaling in specific mannerisms during the 6-step bracing process. PURPOSE: To compare electrical activity in muscles …

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Assessing The Influence Of Electrode Placement On Body Composition Measures From Bioimpedance Technologies, Carina M. Velasquez, Christine M. Florez, Christian Rodriguez, Madelin R. Siedler, Matthew T. Stratton, Patrick S. Harty, Ainsley E. Way, Madison H. Sullivan, Grant M. Tinsley Feb 2026

Assessing The Influence Of Electrode Placement On Body Composition Measures From Bioimpedance Technologies, Carina M. Velasquez, Christine M. Florez, Christian Rodriguez, Madelin R. Siedler, Matthew T. Stratton, Patrick S. Harty, Ainsley E. Way, Madison H. Sullivan, Grant M. Tinsley

International Journal of Exercise Science: Conference Proceedings

A variety of laboratory-based methods have been utilized to assess body composition. However, technical and physiological variations can influence the estimates from these devices. PURPOSE: The purpose of this study was to assess the within- and between-day reliability of bioimpedance spectroscopy (BIS) and single-frequency bioelectrical impedance analysis (SFBIA), with varying electrode placement, for estimates of body fat percentage (BF%), fat-free mass (FFM), and fat mass (FM). METHODS: Eighteen healthy young adults (mean ± SD; age = 25.7 ± 7.5 years; BMI = 22.4 ± 2.3 kg/m2) completed two visits to the laboratory for BIS and SFBIA …

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Dietary Nitrate Supplementation Worsens Resistance Exercise Performance In Resistance-Trained Females, Sydney N. Brennan, Raymond T. Gerardo, Trevor J. Molnar, Justin M. Foster, Ryan Tran, Kyle S. Geppert, Christopher B. Sottile, Michael Egiazarian, Abigail F. Ballhagen, Stewart D. Gonzalez, Adam Pennell, Rachel Tan Jan 2026

Dietary Nitrate Supplementation Worsens Resistance Exercise Performance In Resistance-Trained Females, Sydney N. Brennan, Raymond T. Gerardo, Trevor J. Molnar, Justin M. Foster, Ryan Tran, Kyle S. Geppert, Christopher B. Sottile, Michael Egiazarian, Abigail F. Ballhagen, Stewart D. Gonzalez, Adam Pennell, Rachel Tan

International Journal of Exercise Science: Conference Proceedings

Dietary nitrate supplementation appears to preferentially target type II muscle fibers for beneficial effects; however, research examining the efficacy of nitrate in females and resistance exercise is scarce. PURPOSE: To investigate if dietary nitrate, provided as concentrated nitrate-rich beetroot juice (BR), improved resistance exercise performance in back squat and bench press compared to nitrate-depleted beetroot juice (PL) in resistance-trained females. METHODS: Eighteen resistance-trained females aged reported to the lab for a total of four visits over a 2-week period. Participants performed a one repetition maximum protocol (1RM) and familiarization to the experimental protocol, and were assigned in a randomized, double-blind …

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Glycemic Control After Meals On People With Type 2 Diabetes And Prediabetes Following Resistance Exercise, Isaac Chapman, Kosar Valaei, Oscar Chavez, Marissa Ramirez, Jacob Dawes, Maja Gebauer, Christine M. Mermier, Jonathan Little, Luotao Lin, Gretchen M. Ray, Roberto Mota Alvidrez, Zachary A. Mang, Fabiano Amorim, Valmor Tricoli, Flavio De Castro Magalhaes Jan 2026

Glycemic Control After Meals On People With Type 2 Diabetes And Prediabetes Following Resistance Exercise, Isaac Chapman, Kosar Valaei, Oscar Chavez, Marissa Ramirez, Jacob Dawes, Maja Gebauer, Christine M. Mermier, Jonathan Little, Luotao Lin, Gretchen M. Ray, Roberto Mota Alvidrez, Zachary A. Mang, Fabiano Amorim, Valmor Tricoli, Flavio De Castro Magalhaes

International Journal of Exercise Science: Conference Proceedings

Resistance exercise (RE) has been shown to improve glycemic control after a meal in type 2 diabetes (T2D) and prediabetes under controlled laboratory settings. PURPOSE: To investigate the effects of RE on glycemic control in a free-living environment. METHODS: This was a 4-arm randomized crossover study involving 22 participants with T2D (n=12) or prediabetes (n=10). Glucose was monitored using a continuous glucose monitoring device through the experimental situations that involved three separate exercise sessions: a high-intensity RE session (3 sets x 8 reps, 75%-1RM, 120 sec interval), a rest-redistribution RE session (6 sets x 4 reps, 75%-1RM, 60 sec interval), …

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Body Composition Of Older Active Adults: The Huntsman Senior Games Study, Abby M. Hansen, Dale R. Wagner Facsm, Heather Feeny, Paxton Catillon, Alyssa Mcnutt, Elizabeth Cafferty, Ben Taylor, Matthew Densley, Nicolas Clark, Andrew Creer Jan 2026

Body Composition Of Older Active Adults: The Huntsman Senior Games Study, Abby M. Hansen, Dale R. Wagner Facsm, Heather Feeny, Paxton Catillon, Alyssa Mcnutt, Elizabeth Cafferty, Ben Taylor, Matthew Densley, Nicolas Clark, Andrew Creer

International Journal of Exercise Science: Conference Proceedings

Body composition variables are important when it comes to studying athletic performance. With an aging population, being actively engaged in athletic competition in one’s “golden years” is more common than in previous generations. However, there is a lack of normative data for senior athletes relative to their younger counterparts. PURPOSE: The purpose of this study was to analyze the correlation between age and both body fat percentage (%BF) and fat-free mass index (FFMI) in senior athletes and classify the percentile ranks of these body composition variables. METHODS: Data were collected using an InBody 770 Multi-Frequency Bioelectrical Impedance Analysis machine. Data …

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Effects Of Hypobaric Hypoxia During Intermittent Cycling Bouts On Markers Of Acute Kidney Injury, Jacob D. Dawes, Alyssa R. Bailly, Jonathan W. Specht, Christopher B. Hart, Mateo Griego, Marissa Ramirez, Kaia G. Allen, Alexander Smaragdas, Fabiano T. Amorim Jan 2026

Effects Of Hypobaric Hypoxia During Intermittent Cycling Bouts On Markers Of Acute Kidney Injury, Jacob D. Dawes, Alyssa R. Bailly, Jonathan W. Specht, Christopher B. Hart, Mateo Griego, Marissa Ramirez, Kaia G. Allen, Alexander Smaragdas, Fabiano T. Amorim

International Journal of Exercise Science: Conference Proceedings

Many individuals travel to high altitudes for recreational or occupational purposes. Hypobaric hypoxia (HH) at altitude decreases arterial oxygen saturation (SaO2), reduces oxygen delivery to tissues, and can adversely affect organ function. Exercise, independent of HH, significantly decreases renal blood flow (RBF). Therefore, performing exercise in HH may further impair oxygen delivery and place additional strain on the kidneys. While the impact of chronic HH on kidneys has been documented, there is limited research on the risk of acute kidney injury (AKI) under these conditions. PURPOSE: To investigate the effects of acute HH exposure during intermittent exercise …

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Can Passive Water Immersion Shape Force Production Capacity?, Joonsun Park, Talin Louder Jan 2026

Can Passive Water Immersion Shape Force Production Capacity?, Joonsun Park, Talin Louder

International Journal of Exercise Science: Conference Proceedings

Previous studies have shown mechanistic neurophysiological evidence to foster motor cortical and plasticity alongside improved cerebral perfusion. Although evidence remains limited, these neural effects suggest passive immersion may enhance force output capacity. PURPOSE: This study aimed to investigate the acute effects of passive water immersion in a seated position on lower-extremity isometric strength as measured by isometric mid-thigh pull (IMTP) performance on land. METHODS: Thirty-three active young adults (age: 22.64 ± 4.18 years, height: 174.55 ± 10.28 cm, mass: 81.45 ± 18.77 kg) completed both land and water conditions (LC and WC), with pre- and post-tests using within …

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Effect Of Previous Night Alcohol On Thermoregulatory And Physiological Strain During Prolonged Physical Work In The Heat, Marissa Ramirez, Jonathan W. Specht, Flavio De Castro Magalhaes, Fabiano Amorim, Whitley C. Atkins Jan 2026

Effect Of Previous Night Alcohol On Thermoregulatory And Physiological Strain During Prolonged Physical Work In The Heat, Marissa Ramirez, Jonathan W. Specht, Flavio De Castro Magalhaes, Fabiano Amorim, Whitley C. Atkins

International Journal of Exercise Science: Conference Proceedings

Many occupational workers engage in strenuous physical work in hot environments for prolonged periods, placing them at risk of heat-related illness due to increasing physiological strain identified by increasing core temperature (Tcore) and heart rate (HR). Lifestyle behaviors, such as smoking, caffeine and alcohol consumption, and sleep deprivation, may further exacerbate heat strain and increase susceptibility to heat-related illness. Notably, alcohol consumption the night before work, and the subsequent hangover, may amplify physiological strain by impairing heat dissipation. However, no previous studies have evaluated the impact of alcohol hangover on heat strain during physical work in the heat. PURPOSE: …

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Evaluating The Accuracy Of Sex-Dependent Algorithms In Commercial Wrist-Worn Wearables For Exercise Energy Expenditure, Olivia R. Perez, Dustin W. Davis, Michael W. H. Wong, James W. Navalta Facsm Jan 2026

Evaluating The Accuracy Of Sex-Dependent Algorithms In Commercial Wrist-Worn Wearables For Exercise Energy Expenditure, Olivia R. Perez, Dustin W. Davis, Michael W. H. Wong, James W. Navalta Facsm

International Journal of Exercise Science: Conference Proceedings

Commercial wrist-worn wearable devices are popular among sports and health enthusiasts. Energy expenditure (EE) is a valuable measurement returned from these devices, but the accuracy is variable. A gap exists in sport and exercise science concerning sex-specific accuracy and input algorithms. Purpose: This study aimed to evaluate the sex-specific validity of five commercial wrist-worn wearable devices in estimating exercise EE, with indirect calorimetry as the criterion. Methods: 97 adult participants were outfitted with two devices (n = 20 per device), one set to the "female" sex option on the right wrist and the other set to the "male" sex …

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