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Articles 151 - 180 of 13350
Full-Text Articles in Entire DC Network
Physical Education As A Determinant Of Adolescents’ Weekday Activity Behaviors, Jessica Pegg, Grant Dunn, Kevin Dames, Samantha Moss
Physical Education As A Determinant Of Adolescents’ Weekday Activity Behaviors, Jessica Pegg, Grant Dunn, Kevin Dames, Samantha Moss
International Journal of Exercise Science: Conference Proceedings
Physical education is a structured setting that facilitates physical activity and helps establish healthy habits in youth. Despite the recognized role of physical education and benefits of physical activity, Texas mandates only 1 credit (i.e., two semesters) of physical education across 4 years of high school (19 Texas Administrative Code §74.12(b)(6)(F)). PURPOSE: 1) Identify the amount of time adolescents spend in moderate-to-vigorous physical activity (MVPA) and sedentary behavior during physical education and weekdays, and 2) examine the predictive utilities of MVPA during physical education toward adolescents’ weekday MVPA and sedentary behavior. METHODS: The study recruited 50 students (32 …
Exercise-Induced Metabolic Demand Modifies Nirs-Based Assessments Of Reactive Hyperemia, Elizabeth G. Knoll, Wonjae Lee, Joshua L. Keller
Exercise-Induced Metabolic Demand Modifies Nirs-Based Assessments Of Reactive Hyperemia, Elizabeth G. Knoll, Wonjae Lee, Joshua L. Keller
International Journal of Exercise Science: Conference Proceedings
Combining near-infrared spectroscopy (NIRS) with a vascular occlusion test (VOT) is commonly used to assess the determinants of reactive hyperemia. However, the influence of exercise-induced metabolic demand on NIRS-derived outcomes remains unclear. Because reactive hyperemia is governed by redundant endothelial, myogenic, and metabolic factors, incorporating non-fatiguing exercise may provide an experimental approach to differentially emphasize their relative contributions. PURPOSE: Therefore, our purpose was to examine the effects of submaximal exercise on NIRS+VOT indices of skeletal muscle tissue oxygenation (StO2). METHOD: Twelve healthy adults ranging from 18 to 35 years old (6 males and 6 females; 25 ± 6 years; 72.7 …
Agreement Of Skeletal Muscle Mass Estimates Between Professional And Consumer-Grade Bioelectrical Impedance Analysis, Julia A. Whitson, Carina M. Velasquez, Christine M. Florez, Ainsley E. Way, Madison H. Sullivan, Reva Ann Rudolph, John Alexander, Adhirath Malladi, Grant M. Tinsley
Agreement Of Skeletal Muscle Mass Estimates Between Professional And Consumer-Grade Bioelectrical Impedance Analysis, Julia A. Whitson, Carina M. Velasquez, Christine M. Florez, Ainsley E. Way, Madison H. Sullivan, Reva Ann Rudolph, John Alexander, Adhirath Malladi, Grant M. Tinsley
International Journal of Exercise Science: Conference Proceedings
Skeletal muscle mass (SMM) is a useful variable for evaluating overall fitness and detecting conditions like sarcopenia and cachexia. While several validated laboratory and clinical devices (including magnetic resonance imaging, dual-energy X-ray absorptiometry, and laboratory-grade bioimpedance devices) are adept at SMM assessment, such measures may prove inaccessible or cost-prohibitive to the average person. Consumer-grade bioimpedance analyzers seek to bridge this gap and provide affordable, accurate body composition information. PURPOSE: The purpose of this study was to compare the validity of skeletal muscle mass (SMM) assessment by a consumer-available hand-to-foot bioimpedance analyzer between females and males, using a professional-grade device as …
Influence Of Moderate-To-Vigorous Physical Activity During Physical Education For Fitness, Cognition, And School Day Activity In Adolescence, Grant Dunn, Jessica Pegg, Kevin Dames, Samantha Moss
Influence Of Moderate-To-Vigorous Physical Activity During Physical Education For Fitness, Cognition, And School Day Activity In Adolescence, Grant Dunn, Jessica Pegg, Kevin Dames, Samantha Moss
International Journal of Exercise Science: Conference Proceedings
In Texas, students K-12 are required to engage in moderate-to-vigorous physical activity (MVPA) at least 50% of the time spent in physical education (Texas Education Code § 28.002, 2021). Engaging in MVPA advances developmental outcomes, including health-related fitness and cognition, to support long-term health behaviors. However, there is a lack of evidence examining if the MVPA requirement is being met and possible health impacts. PURPOSE: 1) Identify how many students adhere to the MVPA physical education requirement and 2) investigate differences in developmental outcomes (i.e., health-related fitness [upper and lower body strength], cognition), and school day MVPA and sedentary behavior …
Blood Flow Restriction Circuit Training Model Improves Gait Speed And Lower Limb Muscle In Adults Over 60, Pablo Cruz, Sten O. Stray-Gundersen, Regine Rossi, Teresa Gingles, Graham Trawick, Ronan Miller, Sameena Mathew, Ethan To, Savannah V. Rauschendorfer
Blood Flow Restriction Circuit Training Model Improves Gait Speed And Lower Limb Muscle In Adults Over 60, Pablo Cruz, Sten O. Stray-Gundersen, Regine Rossi, Teresa Gingles, Graham Trawick, Ronan Miller, Sameena Mathew, Ethan To, Savannah V. Rauschendorfer
International Journal of Exercise Science: Conference Proceedings
Blood flow restriction (BFR) training is a low intensity modality capable of inducing neuromuscular and functional adaptations. While BFR has been implemented using isolated resistance or walking protocols in older adults, less is known about the effect of BFR application to popular circuit-based training modalities that integrate multi- exercise strength training, cardiovascular, and muscular endurance. PURPOSE: This study evaluated the effects of a 6-week BFR circuit training (BFRT) program on functional performance and thigh muscle cross-sectional area in healthy adults over 60, compared to a health education control group. METHODS: 45 healthy adults ≥60 years were randomly assigned to either …
Muscle Excitation And Prefrontal Cortex Oxygenation Responses During Resistance Exercise, Kase J. Pennartz, Jeremiah Blough, Wonjae Lee, Jiwon Song, Myungjin Jung, Joshua L. Keller
Muscle Excitation And Prefrontal Cortex Oxygenation Responses During Resistance Exercise, Kase J. Pennartz, Jeremiah Blough, Wonjae Lee, Jiwon Song, Myungjin Jung, Joshua L. Keller
International Journal of Exercise Science: Conference Proceedings
Resistance exercise (RE) enhances cognitive function potentially through increases in cerebral blood flow and oxygenation (O2Hb). These exercise-induced changes in cerebral blood flow and concomitant neural activity reflect the neurovascular coupling. Blood flow restriction (BFR) combined with low-load (LL) RE is an effective tool for increasing muscle excitation, size, and strength. However, the effects of BFR RE on cerebral oxygenation responses remain unknown. PURPOSE: Therefore, our purpose was to compare the effects of LL, LL + BFR, or (high-load) HL volume-equated squats on changes in prefrontal cortex (PFC) oxygenation and muscle excitation in adults. METHODS: Thirty healthy, young …
Thermography-Derived Skin Temperature Metrics Reflect Physiological And Perceptual Recovery, Tyler Mccollum, Marcos Keefe, Alexandra Brojanac, Isabel J. Richardson, Sophia J. Waller, Yasuki Sekiguchi
Thermography-Derived Skin Temperature Metrics Reflect Physiological And Perceptual Recovery, Tyler Mccollum, Marcos Keefe, Alexandra Brojanac, Isabel J. Richardson, Sophia J. Waller, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
Monitoring recovery following fatiguing exercise requires tools that are sensitive to both physiological and perceptual stress while remaining practical for applied settings. Infrared thermography has emerged as a promising, non-invasive technique, yet its association with established recovery outcomes has not been fully elucidated. PURPOSE: To investigate the association between thermography-measured skin temperature with physiological and perceptual recovery metrics. METHODS: Eight recreationally active individuals (mean ± standard deviation; age: 29 ± 5yrs, height: 174.3 ± 7.7, weight: 72.5 ± 7.1kg) completed a whole-body fatiguing exercise protocol with either pre-exercise sauna, post-exercise sauna, or no sauna bathing in a randomized and counterbalanced …
Effect Of Menstrual Cycle On Lower-Body Power Output In Active College-Aged Women, Peyton Schmidt, Taylor Vannett, Erika Short
Effect Of Menstrual Cycle On Lower-Body Power Output In Active College-Aged Women, Peyton Schmidt, Taylor Vannett, Erika Short
International Journal of Exercise Science: Conference Proceedings
The menstrual cycle is a normal physiological process that may influence physical and psychological performance in women. Many women report feeling less powerful during their menstrual cycle, which may affect athletic performance. PURPOSE: The purpose of this study was to determine whether the menstrual cycle affects lower-body power output in active college-aged women. METHODS: Twenty active women (18–25 years; M = 20.35 ± 1.98) participated in this study. All participants experienced regular menstrual cycles and were recreationally active or competitive athletes. Testing was conducted in the Texas Lutheran University Kinesiology Lab using a Biodex Dynamometer. After signing an informed consent, …
Muscle Excitation During Volume-Equated Squats Performed With And Without Blood Flow Restriction, Danielle Hitchens, Joshua L. Keller, Kase Pennartz, Wonjae Lee, Jeremiah Blough, Myungjin Jung, Jiwon Song
Muscle Excitation During Volume-Equated Squats Performed With And Without Blood Flow Restriction, Danielle Hitchens, Joshua L. Keller, Kase Pennartz, Wonjae Lee, Jeremiah Blough, Myungjin Jung, Jiwon Song
International Journal of Exercise Science: Conference Proceedings
Blood flow restriction (BFR) resistance training has gained increasing attention in clinical, athletic, and recreational settings. It has been proposed that low-load resistance exercise combined with BFR can elicit significant muscle adaptations, potentially mimicking the effects of high-load training. Despite the growing use of this modality, the effects of BFR on muscle excitation remain incompletely understood., Surface electromyography (EMG) provides a useful approach for examining these responses. Additionally, volume-matched exercise conditions are needed to isolate the unique effects of load and BFR. PURPOSE: Therefore, the purpose of this study was to determine whether muscle excitation differs across four sets of …
Association Of Body Mass Index With Gait Dynamics And Fall Risk In College Students, Diego Diaz-Vega, Heontae Kim, Ho Han, Jungyu Lee
Association Of Body Mass Index With Gait Dynamics And Fall Risk In College Students, Diego Diaz-Vega, Heontae Kim, Ho Han, Jungyu Lee
International Journal of Exercise Science: Conference Proceedings
PURPOSE: Although falls are typically associated with older adults, identifying early indicators of fall risk among young populations may help prevent future mobility decline. Because body mass index (BMI) is a modifiable factor that can influence balance and gait stability, understanding its role in early fall risk is important. Therefore, the purpose of this study was to examine differences in fall risk and gait characteristics across BMI categories in college students. METHODS: Fifteen college students participated in this study and were classified into normal, overweight, or obese groups according to BMI. Fall risk was assessed using the Fall Risk Assessment …
Enhancing Dispositional Mindfulness And Emotion Regulation In Youth Athletes Via A Breathwork And Visualization Intervention, Imare Tasby, Louis Hein, Rene Barbier, Kenia Gonzalez, Mei-Jing Ang, Sven Hoekstra, Kelvin Wu
Enhancing Dispositional Mindfulness And Emotion Regulation In Youth Athletes Via A Breathwork And Visualization Intervention, Imare Tasby, Louis Hein, Rene Barbier, Kenia Gonzalez, Mei-Jing Ang, Sven Hoekstra, Kelvin Wu
International Journal of Exercise Science: Conference Proceedings
Competitive youth sports impose significant psychological demands, often leading to stress and maladaptive emotional regulation. Dispositional mindfulness protects against burnout, yet practical interventions for youth athletes are scarce. Breathwork and visualization offer a physiological gateway to emotional control, but their efficacy in this population is unclear. PURPOSE: This study examined the efficacy of a 12-week breathwork and visualization intervention on dispositional mindfulness and emotion regulation strategies (cognitive reappraisal vs. expressive suppression) in adolescent soccer players. METHODS: Twenty-seven athletes were initially recruited from Soccer Central San Antonio. Following 5 dropouts (1 intervention, 4 control), a final sample of 22 participants …
The Effect Of A 12-Week Breathwork And Visualization Intervention On Inhibitory Control And Cognitive Flexibility In Adolescent Soccer Players, Louis Hein, Jace Nicolet, Tiffany Gomez, Mei-Jing Ang, Sven Hoekstra, Kelvin C. Wu
The Effect Of A 12-Week Breathwork And Visualization Intervention On Inhibitory Control And Cognitive Flexibility In Adolescent Soccer Players, Louis Hein, Jace Nicolet, Tiffany Gomez, Mei-Jing Ang, Sven Hoekstra, Kelvin C. Wu
International Journal of Exercise Science: Conference Proceedings
Cognitive inhibition and flexibility are essential for soccer performance, enabling players to adapt to dynamic environments. However, accumulated season fatigue often degrades these executive functions. The Neurovisceral Integration Model posits that prefrontal cognitive function is linked to cardiac vagal tone, suggesting that autonomic regulation may support inhibitory control. While breathwork is known to enhance autonomic regulation, its potential to preserve cognitive function in youth athletes is untested. PURPOSE: This study investigated the effects of a 12-week breathwork and visualization protocol on inhibitory control (Stroop) and cognitive flexibility (Task-Switching) in adolescent soccer players. METHODS: Athletes were recruited from Soccer Central San …
Cross-Validating The Healthy Step Length Equation: Evaluating Prediction Accuracy In Community-Dwelling Older Adults, Jungyu Lee, Ho Han, Heontae Kim, Diego Diaz-Vega
Cross-Validating The Healthy Step Length Equation: Evaluating Prediction Accuracy In Community-Dwelling Older Adults, Jungyu Lee, Ho Han, Heontae Kim, Diego Diaz-Vega
International Journal of Exercise Science: Conference Proceedings
Step length is a key indicator of gait efficiency and mobility in older adults, closely associated with fall risk, frailty, and overall health. However, most available prediction equations are based solely on height or have not undergone empirical validation, which limits their precision and applicability in aging populations. PURPOSE: This study aimed to cross-validate the newly developed Healthy Step Length Equation, which incorporates age, sex, height, weight, and walking speed, by comparing it with three commonly used height-based models to evaluate its predictive accuracy, and clinical relevance in older adults. METHODS: A total of 174 healthy, community-dwelling adults …
Effect Of Acute Sleep Fragmentation On Skeletal Muscle Blood Flow During Handgrip Exercise, Gabriel Narvaez, Joaquin Gonzales
Effect Of Acute Sleep Fragmentation On Skeletal Muscle Blood Flow During Handgrip Exercise, Gabriel Narvaez, Joaquin Gonzales
International Journal of Exercise Science: Conference Proceedings
Sleep fragmentation (arousals from sleep) has been shown to impair vascular function due to elevated inflammation and oxidative stress. Previous research on this topic has focused on resting vascular function, with little information available about the effect of poor sleep on hyperemic responses to exercise. PURPOSE: To test the hypothesis that acute sleep fragmentation impairs skeletal muscle blood flow during exercise. METHODS: Fifteen adults (7F, 8M, age- 25 ± 5 y, BMI 23.5 ± 2.5 kg/m2) participated in a randomized crossover study that included one night of habitual sleep and one night of sleep fragmentation separated by at least 7 …
The Effect Of Mental Imagery On Free Throw Shooting Percentage, Kaydon Jackson, Kadyn Hall, Casi Helbig
The Effect Of Mental Imagery On Free Throw Shooting Percentage, Kaydon Jackson, Kadyn Hall, Casi Helbig
International Journal of Exercise Science: Conference Proceedings
Mental imagery is a cognitive process involving the internal simulation of sensory experiences without external stimuli and is commonly used in sport performance preparation. When structured and deliberately practiced, mental imagery can enhance skill acquisition and performance outcomes PURPOSE: This study investigated whether PETTLEP-guided mental imagery (Physical, Environment, Task, Timing, Learning, Emotion, Perspective), performed without any physical practice, could enhance free-throw accuracy. METHODS: Twenty collegiate baseball players were randomly assigned to a PETTLEP imagery group (n=10) or a control group (n=10). Over two weeks, the experimental group participated in five guided mental imagery sessions, each lasting five minutes, while the …
What The Dose?: Assessing The Effect Of Different Doses Of Arugula Extract Capsules On Blood Pressure And Endothelial Function, Autumn E. Andrews, Leroy K. Bolden, Andrew R. Gallucci, Tomas J. Chapman-Lopez, Mary C. Pickler, Olivia C. Russell, Katherine M. Lee, Savannah V. Rauschendorfer
What The Dose?: Assessing The Effect Of Different Doses Of Arugula Extract Capsules On Blood Pressure And Endothelial Function, Autumn E. Andrews, Leroy K. Bolden, Andrew R. Gallucci, Tomas J. Chapman-Lopez, Mary C. Pickler, Olivia C. Russell, Katherine M. Lee, Savannah V. Rauschendorfer
International Journal of Exercise Science: Conference Proceedings
The effects of consuming nitrate-rich crops and supplements such as beetroot juice and spinach on endothelial function and blood pressure (BP) via nitric oxide (NO) production have been well established in previous literature. However, limited literature exists on arugula supplementation (e.g., arugula extract) as a source of NO and its effect on vascular function. PURPOSE: The present study assessed the effect of high and low doses of arugula extract (AE) on blood pressure, vascular measures, and nitrate/nitrite concentrations. METHODS: Eight apparently healthy participants completed a single-blind crossover design study. All participants were randomized for three conditions (3000mg, 6000mg, …
Under Pressure: Arugula Extract’S Effect On Cardiovascular Measures In Hypertensive Individuals, Leroy K. Bolden, Andrew R. Gallucci, Autumn E. Andrews, Mary C. Pickler, Blake E. Wright, Tomas J. Chapman-Lopez, Savannah V. Rauschendorfer
Under Pressure: Arugula Extract’S Effect On Cardiovascular Measures In Hypertensive Individuals, Leroy K. Bolden, Andrew R. Gallucci, Autumn E. Andrews, Mary C. Pickler, Blake E. Wright, Tomas J. Chapman-Lopez, Savannah V. Rauschendorfer
International Journal of Exercise Science: Conference Proceedings
Hypertension (HTN) is one of the major contributing factors associated with the progression and development of cardiovascular disease (CVD). Moreover, HTN is expected to significantly increase by the year 2050. Nitrate supplements such as beetroot juice (BRJ) have been utilized as a dietary therapeutic to mitigate the progression of HTN and CVD; however, arugula extract, which has a higher nitrate content, has yet to be assessed. PURPOSE: The purpose of this study was to assess the effects of arugula extract on cardiovascular health measures in hypertensive individuals. METHODS: 12 participants (M = 11; F = 1) with stage …
Mental Effort Responses To Low Cognitive Load Stimuli During Euhydrated Versus Hypohydrated Fatigue State, Austin Dunn, Lily Hargrove, James Rowe, Luis Aguerrevere, Eric Jones
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 …
Nirs-Vot Measures That Relate To Hyperemic Peak Velocity, William M. Kerr, Kase J. Pennartz, Ethan J. Hein, Justin D. Sprick, Joshua L. Keller
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) …
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
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: …
Do Different Practice Approaches Affect Intrinsic Motivation Based On A Goal-Directed Behavior?, Elissa D. Torres-Colon, Anthony W. Fava, Emily J. Sauers
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 …
Determining The Predictors Of Rate Of Core Temperature Rise In Physically Active Men And Women, Mario I. Hernandez, Alexandra P. Brojanac, Tyler B. Mccollum, Rachel R. Roberts, Caitlin C. Sassetti, Yasuki Sekiguchi
Determining The Predictors Of Rate Of Core Temperature Rise In Physically Active Men And Women, Mario I. Hernandez, Alexandra P. Brojanac, Tyler B. Mccollum, Rachel R. Roberts, Caitlin C. Sassetti, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
With increasing global temperatures and interest in sports participation, more physically active men and women are exposed to hotter temperatures. To ensure the safety of these individuals, it is essential to identify the predictors of the rate of core temperature rise. PURPOSE: To determine the predictors of the rate of core temperature rise between males and females while exercising in warm and hot environments. METHODS: Physically active eleven males (age: 23±5 yrs, body mass: 72±8 kg, height: 175±8 cm, estimated maximal oxygen uptake [VO2max]: 51.6±5.9 ml⋅kg-1⋅min-1) and six females (age: 27±8 yrs, …
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
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 …
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
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: …
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
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 …
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
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 …
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
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 …
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
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 …
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
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 …
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
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 …