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Impact Of An Outdoor Physical Activity Intervention On Muscular Fitness In Adolescents, Khizra Khan, Joni A. Mettler, L. Kent Griffin, Lindsay E. Kipp Feb 2025

Impact Of An Outdoor Physical Activity Intervention On Muscular Fitness In Adolescents, Khizra Khan, Joni A. Mettler, L. Kent Griffin, Lindsay E. Kipp

International Journal of Exercise Science: Conference Proceedings

Physical inactivity among adolescents is a growing health concern. Innovative, engaging interventions are needed, such as after-school programs to promote physical activity and improve youths’ health, including muscular fitness. PURPOSE: The purpose was to evaluate the impact of an outdoor physical activity intervention on muscle strength, muscle endurance, and agility in middle school students. METHODS: The intervention included various physical activities (e.g., kayaking, orienteering/hiking, archery, disc golf, mountain biking), across 10 sessions over 5 weeks. Seven 6th and 7th graders (age: 11.7 ± 0.2 years; BMI: 24.7 ± 2.7) completed pre and post intervention assessments for …

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Influence Of Back Foot Positioning On Tennis Serve Performance, Erika Synoski, Scott P. Mclean Feb 2025

Influence Of Back Foot Positioning On Tennis Serve Performance, Erika Synoski, Scott P. Mclean

International Journal of Exercise Science: Conference Proceedings

The sport of tennis involves many different strokes, of which the serve is arguably the most important. The serve begins with feet separated about shoulder width apart with one foot closer to the net. During the foot-up technique, players move their back foot near their front foot while executing the serve. For the foot-back technique, the back foot remains stationary. It is commonly discussed in coaching literature that the use of the foot-up technique allows for enhanced weight transfer producing a more powerful serve while the foot-back technique allows for greater stability and control in the serve. Limited data exists …

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Estimating Minute Ventilation And Inspiratory Flow To Trigger Exercise-Induced Laryngeal Obstruction (Eilo) In Pediatric Patients, Rebecca Brovina, John M. Robertson, Andreas Kreutzer Feb 2025

Estimating Minute Ventilation And Inspiratory Flow To Trigger Exercise-Induced Laryngeal Obstruction (Eilo) In Pediatric Patients, Rebecca Brovina, John M. Robertson, Andreas Kreutzer

International Journal of Exercise Science: Conference Proceedings

Exercise-induced respiratory symptoms hinder exercise participation and performance in adolescents. One cause is exercise-induced laryngeal obstruction (EILO). While EILO pathology is poorly understood, high airflow rates through the larynx appear necessary to elicit an episode. Exercise above 75% of peak work capacity reliably triggers EILO; however, the minute ventilation (V̇E) and mean inspiratory flow rates (VT/Ti) to trigger EILO are unknown. This information could influence diagnostic testing protocols, exercise prescriptions, and training programs. PURPOSE: The purpose of this ongoing study is to estimate the V̇E and VT/Ti required to trigger laryngeal closure …

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Examining The Relationship Between Competition Stress And Performance In Collegiate Rodeo Bronc Riders Through Salivary Cortisol And Heart Rate, Tyler K. Handley, Jennifer L. Zoller, Chelsie J. Huseman, Lisa Colvin, William Storer, Amanda Baxter Feb 2025

Examining The Relationship Between Competition Stress And Performance In Collegiate Rodeo Bronc Riders Through Salivary Cortisol And Heart Rate, Tyler K. Handley, Jennifer L. Zoller, Chelsie J. Huseman, Lisa Colvin, William Storer, Amanda Baxter

International Journal of Exercise Science: Conference Proceedings

Competition stress significantly impacts the performance of athletes across various sports. Despite its unique demands, stress in rodeo athletes remains underexplored, largely due to the sport's nomadic and individualistic nature and its prior lack of mainstream attention. While comparisons can be drawn between the intermittent structure of rodeo and mainstream sports like baseball or football, the recent surge in rodeo's popularity has increased interest in optimizing athlete performance. PUROSE: The aim of this study was to identify and compare salivary cortisol concentration (SCC) and physical workloads experienced by riders and horses in practice and competition settings. Additionally, the study aims …

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Intercranial Blood Flow Is Determined By Diastolic Blood Pressure, Kyle J. Hamlin, Marcela Guadiana, Camila Guadiana, Yunsuk Koh, Jose M. Moris Feb 2025

Intercranial Blood Flow Is Determined By Diastolic Blood Pressure, Kyle J. Hamlin, Marcela Guadiana, Camila Guadiana, Yunsuk Koh, Jose M. Moris

International Journal of Exercise Science: Conference Proceedings

A deeper understanding of cerebral hemodynamics at rest is warranted to identify pathological changes associated with maladaptive changes in cognition. The need stems from evidence supporting cortical hypoperfusion during early adulthood as a predictor of late adulthood Alzheimer’s disease. PURPOSE: To disseminate which physiometrics can aid at identifying changes in cerebral blood flow. METHODS: A total of 22 young (22.55 ± 2.58 years) men participated in this study. Ultrasound sonography (doppler & pulse wave) was utilized to assess the peak systolic (PS) and end diastolic (ED) velocity (cm/s), while simultaneously measuring the vessel diameter (cm) in the internal …

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Exercise Pressor Reflex And Acute Vascular Response To Isometric Exercise With Or Without Blood Flow Restriction, Lin-Sheng Chen, Kazumasa Manabe, Yanbing Zhou, Jide Adebiyi, Tianyu Wang, Takanobu Okamoto, Hirofumi Tanaka Feb 2025

Exercise Pressor Reflex And Acute Vascular Response To Isometric Exercise With Or Without Blood Flow Restriction, Lin-Sheng Chen, Kazumasa Manabe, Yanbing Zhou, Jide Adebiyi, Tianyu Wang, Takanobu Okamoto, Hirofumi Tanaka

International Journal of Exercise Science: Conference Proceedings

Low-intensity exercise combined with blood flow restriction (BFR) is effective in improving muscle strength and hypertrophy. However, exaggerated exercise pressor reflex due to restricted venous outflow and metabolite accumulation triggering metaboreflex has been raised as a concern during BFR training. Additionally, the impact of BFR training on arterial vascular function remains highly controversial. PURPOSE: To evaluate hemodynamic responses to isometric exercise with and without BFR using the post-exercise ischemia (PEI) protocol and examine the acute changes in vascular function before and after BFR isometric exercise. METHODS: Nine apparently healthy young adults (5 females, 28±4 years) completed three sets …

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Comparison Of Overground, Motorized Treadmill And Non-Motorized Treadmill Gait In Younger And Older Adults, Emily L. Chaires, Meghan Mccarthy, Breanna Steele, Scott P. Mclean Feb 2025

Comparison Of Overground, Motorized Treadmill And Non-Motorized Treadmill Gait In Younger And Older Adults, Emily L. Chaires, Meghan Mccarthy, Breanna Steele, Scott P. Mclean

International Journal of Exercise Science: Conference Proceedings

Previously we found that walking on a non-motorized treadmill (NMT) elicited greater EMG activity from plantar flexor muscles compared to walking overground (OG) and on a motorized treadmill (MT) in adults younger than 25 years of age. PURPOSE: To compare muscle activation patterns of lower extremity muscles between MT, NMT and overground (OG) walking in younger and older. METHODS: Twelve healthy older adults (55.4±4.1 yrs, 167.8±9.0 cm, 73.1±13.1 kg ) and 23 healthy younger adults (27.9±8.4 yrs, 169.9±8.4 cm, 72.9±16.5kg) completed separate walking trials for OG, MT and NMT modes at the preferred NMT speed. For EMG normalization participants also …

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Weight Loss Increases Adipose Macrophage Cytokine Production And Adipose Bacterial Clearance, Mcarthur Bolden Iii, Xenia D. Davis, Edward R. Sherwood, Julia K. Bohannon, Heather L. Caslin Feb 2025

Weight Loss Increases Adipose Macrophage Cytokine Production And Adipose Bacterial Clearance, Mcarthur Bolden Iii, Xenia D. Davis, Edward R. Sherwood, Julia K. Bohannon, Heather L. Caslin

International Journal of Exercise Science: Conference Proceedings

Innate immune cells can develop memory-like qualities from an initial stimulus, which enhances their effector functions to a secondary challenge. Based on the initial stimuli, innate immune memory has been shown to improve pathogen defense or worsen chronic metabolic disease. We have previously shown that weight loss induces innate immune memory which may worsen diabetes risk following weight regain. However, it is not clear if weight loss induces any protection in infection. PURPOSE: The purpose of this study was to investigate the effect of diet-induced weight gain and loss on survival, bacterial clearance, and macrophage activation in a mouse model …

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Rapid Onset Pressor Response In Young Healthy Hispanic Adults, Ashlesha Dalve, Ruby A. Nyarko, Justo Perez, Jasdeep Kaur Feb 2025

Rapid Onset Pressor Response In Young Healthy Hispanic Adults, Ashlesha Dalve, Ruby A. Nyarko, Justo Perez, Jasdeep Kaur

International Journal of Exercise Science: Conference Proceedings

Hispanic population is the fastest growing ethnic group in the U.S. and experiences a high prevalence of hypertension, a key risk factor of cardiovascular disease. Alterations in the regulation of blood pressure at the onset of exercise are evident in adults with hypertension and those with family history of hypertension. However, it is currently unknown whether such maladaptive pressor responses manifest during acute exercise in young Hispanic adults free from overt cardiovascular disease. PURPOSE: In this study, we examined the blood pressure response at the onset of static handgrip exercise in 19 Hispanic/Latino (H/La; 7 women) and 18 non-Hispanic White …

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Investigating The Epigenetic Regulation Of Innate Immune Memory, Emily Nguyen, Heather L. Caslin Feb 2025

Investigating The Epigenetic Regulation Of Innate Immune Memory, Emily Nguyen, Heather L. Caslin

International Journal of Exercise Science: Conference Proceedings

Innate immune memory is the ability of innate immune cells, such as monocytes and macrophages, to develop “memory” that allows them to respond more efficiently when (re-)exposed to a second stimulus. Innate immune memory is driven by epigenetic changes, including histone methylation (H3K4me3) and acetylation (H3K27ac), which can activate gene transcription at inflammatory loci and drive enhanced activation to a second stimulus. While we have previously shown that macrophage cell cultures treated with palmitate exhibit increased cytokine production and metabolism (outcomes of innate immune), the specific epigenetic mechanisms regulating these changes have not been shown. PURPOSE: This study aimed …

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Greater Oxygen Uptake And Respiratory Efficiency After 4 Weeks Of Aerobic Exercise Utilizing Nasal Breathing, Camila Guadiana, Marcela Guadiana, Kyle J. Hamlin, Yunsuk Koh, Jose M. Moris Feb 2025

Greater Oxygen Uptake And Respiratory Efficiency After 4 Weeks Of Aerobic Exercise Utilizing Nasal Breathing, Camila Guadiana, Marcela Guadiana, Kyle J. Hamlin, Yunsuk Koh, Jose M. Moris

International Journal of Exercise Science: Conference Proceedings

Engaging in routine aerobic exercise is essential to maintain a healthy respiratory performance. However, new evidence supports that utilizing nasal breathing (NB) over combined breathing (CB) during aerobic exercise sessions could provide greater respiratory adaptations due to its positive effect on alveolar gas exchange. PURPOSE: To determine what respiratory adaptations develop after 4 weeks of aerobic exercise utilizing NB in comparison to CB. METHODS: 22 men (21.55 ± 2.58 years) were randomized into the CB or NB group. Participants performed a pulmonary function test and a graded maximal aerobic exercise test (GXT) during Pre-training (V1), and after 4 weeks of …

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A Popularized Measure Of Anaerobic Capacity May Not Be Valid In Short-Duration Exercise, Jacob L. Mcnary, Marcelo Papoti, Claudio A. Gobatto, Fúlvia De Barros Machado-Gobatto, David W. Hill, Madison B. Landtiser, Austin Shaw, Ethan J. Hein, Brady Mclain, Lydia K. Caldwell, Sarah Deemer Feb 2025

A Popularized Measure Of Anaerobic Capacity May Not Be Valid In Short-Duration Exercise, Jacob L. Mcnary, Marcelo Papoti, Claudio A. Gobatto, Fúlvia De Barros Machado-Gobatto, David W. Hill, Madison B. Landtiser, Austin Shaw, Ethan J. Hein, Brady Mclain, Lydia K. Caldwell, Sarah Deemer

International Journal of Exercise Science: Conference Proceedings

The gold standard measure of anaerobic contribution is accumulated oxygen deficit (AOD). Calculating AOD is time consuming, as it requires several submaximal exercise tests to estimate oxygen demand. Recent studies have proposed an alternative AOD for measuring anaerobic contributions: this ‘AOD_alt’ provides separate measures of phosphocreatine and glycolysis contributions and requires only one exercise test. PURPOSE: This study aimed to determine the validity of AOD_alt as a measure of anaerobic contribution during constant power, severe intensity, cycle ergometer exercise of different durations. METHODS: Seven women (age 23 ± 3 y, height 169 ± 8 cm, weight 67 ± 12 kg) …

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Increasing The Incidence Of Type 2 Diabetes In Ucd-T2dm Female Rats, Chandni Bhagtaney, Austin Thornton, Milena Samora, Ali Mossayebi, Kimber L. Stanhope, Peter J. Havel D.V.M., Ph.D., Audrey J. Stone, Michelle L. Harrison Feb 2025

Increasing The Incidence Of Type 2 Diabetes In Ucd-T2dm Female Rats, Chandni Bhagtaney, Austin Thornton, Milena Samora, Ali Mossayebi, Kimber L. Stanhope, Peter J. Havel D.V.M., Ph.D., Audrey J. Stone, Michelle L. Harrison

International Journal of Exercise Science: Conference Proceedings

The prevalence of type 2 diabetes mellitus (T2DM) is higher for men compared with women, yet women present with a greater risk factor burden at the time of their diagnosis. Currently, research is lacking that addresses these sex-specific differences in disease onset and progression, research that is critical to understanding the pathophysiology of diabetes and developing optimal treatment strategies for both women and men. These same sex differences are present in animal models of T2DM. The paucity of suitable T2DM animal models is a barrier to investigations of these sex differences. The University of California Davis (UCD)-T2DM rat model, bred …

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A Single Bout Of Crossfit® Exercise May Not Significantly Affect Inhibitory Control, Sara Melendez, Yu Lun Tai, Jeremy Abshire, Chien Ting Wu, Gary Guerra Feb 2025

A Single Bout Of Crossfit® Exercise May Not Significantly Affect Inhibitory Control, Sara Melendez, Yu Lun Tai, Jeremy Abshire, Chien Ting Wu, Gary Guerra

International Journal of Exercise Science: Conference Proceedings

Acute exercise has been shown to enhance cognitive function such as inhibitory control, with aerobic and resistance exercises yielding significant benefits. High-Intensity Functional Training (HIFT), such as CrossFit®, combines high-intensity, multi-joint movements and has shown promise in improving working memory. However, its acute effects on inhibitory control remain unclear. PURPOSE: This study aimed to investigate the acute effects of a single CrossFit®-based HIFT session on inhibitory control in healthy young adults. METHODS: Eighteen healthy college students (age: 24.2 ± 3.8 years; 9 females) completed two 15-minute sessions: (1) HIFT exercise consisting of six CrossFit®-based exercises (burpees, inverted rows, dumbbell push …

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Validity Of A Hydration Assessment Device For Determination Of Hydration Status, Ciriany Arrazola, Marcos Keefe, Ryan Dunn, Kelly B. Elliott, Yasuki Sekiguchi Feb 2025

Validity Of A Hydration Assessment Device For Determination Of Hydration Status, Ciriany Arrazola, Marcos Keefe, Ryan Dunn, Kelly B. Elliott, Yasuki Sekiguchi

International Journal of Exercise Science: Conference Proceedings

Euhydration, defined as the state of optimal total body water content, is essential for maintaining proper physiological function across multiple systems and organs. However, there is currently a lack of assessment that can provide a rapid, non-invasive and cost-effective diagnosis of hydration status. PURPOSE: To evaluate the validity of the commercial accessible hydration sensor in determining hydration status compared to urine and blood indices. METHODS: Twenty-eight participants (age: 23 ± 3 yr; body mass: 73.38 ± 17.03 kg; height: 169.90 ± 9.07 cm) completed this study. Twenty participants performed the first experimental design, whereas eight participants performed the second …

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Voluntary Wheel Running Improves Glucose Homeostasis And Visceral Adiposity In Old Mice, Alexandra Canizales, David J. Buckley, Sogol Zahedi, Daniel W. Trott Feb 2025

Voluntary Wheel Running Improves Glucose Homeostasis And Visceral Adiposity In Old Mice, Alexandra Canizales, David J. Buckley, Sogol Zahedi, Daniel W. Trott

International Journal of Exercise Science: Conference Proceedings

Age is an independent risk factor for the development of type 2 diabetes, which is characterized in part by impaired glucose homeostasis, greater body weight and visceral adiposity. In older humans, exercise has been demonstrated to be a viable modality to improve these aforementioned outcomes. Surprisingly, to date, no one has assessed whether exercise improves glucose tolerance in old mice. Further the mechanism(s) of improvement in old animals independent of overt obesity is not well understood. PURPOSE: The purpose of this study was to determine whether 8 weeks of voluntary wheel running would result in improved glucose tolerance and …

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Repeated Exposure To Adipose Tissue-Conditioned Media Induces Lipid Handling In Mast Cells Similar To Weight Cycling, Munira Kapadia, Alexa M. Betjemann, Matthew A. Cottam, Heather L. Caslin Feb 2025

Repeated Exposure To Adipose Tissue-Conditioned Media Induces Lipid Handling In Mast Cells Similar To Weight Cycling, Munira Kapadia, Alexa M. Betjemann, Matthew A. Cottam, Heather L. Caslin

International Journal of Exercise Science: Conference Proceedings

Excess adipose tissue is linked to an increased risk of cardiometabolic diseases, including type II diabetes, cardiovascular disease, and hypertension. Weight loss is often prescribed to lower disease risk; however, weight loss is difficult to maintain, leading many individuals to regain lost weight. Repeated cycles of weight gain, termed weight cycling, increases risk for metabolic diseases beyond that of stable long-term obesity. Our group recently showed that weight-cycled mice have more adipose tissue mast cells than obese mice. New analyses show that mast cells subcluster into two unique populations: one with high expression of classical mast cell genes and another …

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Training Load Differences Between Position And Set In Ncaa D1 Collegiate Women’S Volleyball Match, Alexandra P. Brojanac, David Clark, Katie Munger, Yasuki Sekiguchi Feb 2025

Training Load Differences Between Position And Set In Ncaa D1 Collegiate Women’S Volleyball Match, Alexandra P. Brojanac, David Clark, Katie Munger, Yasuki Sekiguchi

International Journal of Exercise Science: Conference Proceedings

PURPOSE: This study investigated the training load differences between positions and sets in NCAA DI collegiate women’s volleyball matches. METHODS: Training load data from twenty NCAA D1 collegiate women’s volleyball players (mean±SD; age, 20±1y; height, 185.4±3.3cm; weight, 77.2±8.2kg) were monitored during all matches throughout the season where players donned an accelerometer-based player tracking device. Training loads included energy, %Hard-landing (when landing force was >15G), Jump 15+ (Jumps>15 inches), average jump height, and total number of jumps. Players’ positions were classified either in middle blocker (MB), outside hitter (OH), and setter, and sets consisted of Set1, Set2, Set3, Set4, and …

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Comparison Of Two Independent Measures Of Anaerobic Capacity In Women And Men, Brady C. Mclain, Austin B. Shaw, Ethan J. Hein, Claudio A. Gobatto, Marcelo Papoti, Fúlvia De Barros Manchado-Gobatto, David W. Hill, Madison B. Landtiser, Jacob L. Mcnary, Sarah E. Deemer, Lydia K. Caldwell Feb 2025

Comparison Of Two Independent Measures Of Anaerobic Capacity In Women And Men, Brady C. Mclain, Austin B. Shaw, Ethan J. Hein, Claudio A. Gobatto, Marcelo Papoti, Fúlvia De Barros Manchado-Gobatto, David W. Hill, Madison B. Landtiser, Jacob L. Mcnary, Sarah E. Deemer, Lydia K. Caldwell

International Journal of Exercise Science: Conference Proceedings

Maximal accumulated oxygen deficit (MAOD) is the gold standard measure to evaluate anaerobic capacity. An alternative to MAOD is ‘MAOD_alt’, which is based on post-exercise measures. While MAOD requires multiple tests to evaluate anaerobic capacity, MAOD_alt requires a single exhaustive test. PURPOSE: The purpose of this study was to determine if MAOD_alt is a valid measure of anaerobic capacity in women and men during cycling[BM2] ergometer exercise. METHODS: Seven women (age 24 ± 3 y, height 166 ± 9 cm, weight 64 ± 13 kg) and nine men (22 ± 2 y, 185 ± 9 cm, 74 ± 10 …

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Timbersports Relationship Between Upper Body Biomechanics And Accuracy, Parker W. Fourney, Amber M. Chelette, Jeremy P. Stovall Feb 2025

Timbersports Relationship Between Upper Body Biomechanics And Accuracy, Parker W. Fourney, Amber M. Chelette, Jeremy P. Stovall

International Journal of Exercise Science: Conference Proceedings

Timbersports are relatively new in comparison to most traditional sports. Given how new of a sport this is, there have been less than 5 recorded studies across every discipline. Most of the previous studies have presented data for the individual's trunk and lower body, but no study yet has examined the upper body kinematics to date. PURPOSE: Given this information, we decided to conduct a study exploring the relationship between upper body biomechanics and accuracy among a college timber sports team. METHODS: Subjects used a double-bit axe for throwing, most of the weight is in the head (1.35 …

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Effect Of Hydration Status On Neuromuscular Performance Before And After Intermittent Exercise In The Heat, Kelly B. Elliott, Ty B. Palmer, Adam S. Lepley, Yasuki Sekiguchi Feb 2025

Effect Of Hydration Status On Neuromuscular Performance Before And After Intermittent Exercise In The Heat, Kelly B. Elliott, Ty B. Palmer, Adam S. Lepley, Yasuki Sekiguchi

International Journal of Exercise Science: Conference Proceedings

Maintaining optimal fluid balance is essential for athletic performance and recovery, especially during exercise in the heat. However, the effect of dehydration on neuromuscular performance with intermittent exercise remains unknown. PURPOSE: To examine the effect of hydration status on neuromuscular performance before and after intermittent exercise in the heat. METHODS: Eight male soccer players (age, 21±2years; body mass, 75.5±9.1kg; maximal oxygen consumption [VO2max], 65.4±11.8mL·kg-1·min-1) completed a VO2max test to qualify for the study. Following this, they performed a familiarization trial, which included ultrasound (cross-sectional area [CSA], depth), single-leg hop (SLH), and …

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The Slow Component Of The Vo2 Response Is Explained By The Increase In Glycolytic Contribution, Austin Shaw, Ethan J. Hein, Jacob L. Mcnary, Brady C. Mclain, David W. Hill, Madison B. Landtiser, Lydia K. Caldwell, Sarah E. Deemer Feb 2025

The Slow Component Of The Vo2 Response Is Explained By The Increase In Glycolytic Contribution, Austin Shaw, Ethan J. Hein, Jacob L. Mcnary, Brady C. Mclain, David W. Hill, Madison B. Landtiser, Lydia K. Caldwell, Sarah E. Deemer

International Journal of Exercise Science: Conference Proceedings

During severe intensity exercise, energy contribution from glycolysis leads to accumulation of intracellular H+ in the working muscles. This acidification results in decreased efficiency in the excitation-contraction coupling mechanism in the muscle cells, which decreases force production. Some studies have suggested that additional, progressive recruitment of glycolytic (type II) muscle fibers may be needed to maintain force production in constant power exercise which causes an increase in oxygen uptake over time (the VO2 slow component) after ~3 minutes. PURPOSE: The purpose of this study was to determine if the amplitude of the VO2 slow component is related …

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Effects Of Vaping Nicotine And Thc On Respiratory Oxidative Stress And Pulmonary Function, Kayla Mckinley, Shannon Jordan, Nikhil Patel, Alan D. Moore Feb 2025

Effects Of Vaping Nicotine And Thc On Respiratory Oxidative Stress And Pulmonary Function, Kayla Mckinley, Shannon Jordan, Nikhil Patel, Alan D. Moore

International Journal of Exercise Science: Conference Proceedings

E-cigarettes cause thermal degradation of liquid bases producing an inhaled vapor (“vaping”). Evidence suggests compounds produced during vaping, as well as the vaporized substance itself, cause lung damage and oxidative stress. Oxidative stress can be quantified through analysis of F2-8-isoprostanes, reactive species that initiate lipid peroxidation of arachidonic acid. PURPOSE: To compare non-vaping controls (C) to vapers (V) to determine if respiratory oxidative stress and/or reduced lung function is associated with young healthy people who vape. METHODS: Individuals aged 18-30 were recruited. Participants who vape were asked to identify if they vape only nicotine, only THC, or both as well …

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Acute Strength Adaptations To Autoregulatory Progressive Resistance Exercise Using Relative Adjustments, Annalee G. Krahn, Andrew West, Dylan J. Harty, Jenaya V. Brown, Micheal Luera, Andrew A. Wolfe Feb 2025

Acute Strength Adaptations To Autoregulatory Progressive Resistance Exercise Using Relative Adjustments, Annalee G. Krahn, Andrew West, Dylan J. Harty, Jenaya V. Brown, Micheal Luera, Andrew A. Wolfe

International Journal of Exercise Science: Conference Proceedings

Autoregulatory progressive resistance exercise (APRE) allows daily fluctuation in training load, therefore, aligning with current participant readiness. Previous literature indicates APRE as superior for strength adaptations compared to traditional linear periodization. However, traditional APRE utilizes absolute load adjustments, contradicting positive implications associated with percentage-based training. PURPOSE: Therefore, the purpose of this study is to investigate acute strength adaptations using a novel relative APRE (r-APRE) training program. METHODS: Nine resistance trained males (m ± sd; age: 21.3 ± 2.2yrs; height: 175.8 ± 6.7cm; weight: 65.6 ± 17.8kg) underwent 1 repetition maximum (1RM) testing for back squat (BS), bench …

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Influence Of Autoregulatory Progressive Resistance Exercise On Motor Unit Firing Patterns, Sarah N. Fambro, Sierra M. Washington, Annalee G. Krahn, Calvin D. Smith, Andru N. Botello, Adriana Alonso Gomez, Andrew A. Wolfe, Micheal J. Luera Feb 2025

Influence Of Autoregulatory Progressive Resistance Exercise On Motor Unit Firing Patterns, Sarah N. Fambro, Sierra M. Washington, Annalee G. Krahn, Calvin D. Smith, Andru N. Botello, Adriana Alonso Gomez, Andrew A. Wolfe, Micheal J. Luera

International Journal of Exercise Science: Conference Proceedings

An autoregulatory progressive resistance exercise (APRE) training regimen adjusts intensity and volume according to an individual's daily performance and levels of fatigue. This training style may lead to distinct effects on neuromuscular adaptations due to the consistent demand of optimized motor unit recruitment during high-intensity exercises. PURPOSE: The purpose of this study was to examine the effects of a 4-week APRE program on motor unit firing patterns in resistance-trained men. METHODS: Seven resistance trained males (age: 21 ± 2.3yrs; height: 176.5 ± 6.8cm; weight: 70.2 ± 17.8kg) participated in a 4-week APRE program. All participants completed pre and post testing …

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Angiotensin Ii Induced Hypertension Induces Dna Damage Associated Gene Expression In Visceral Adipose, Nathan Cuellar, Sogol Zahedi, David J. Buckley, Daniel W. Trott Feb 2025

Angiotensin Ii Induced Hypertension Induces Dna Damage Associated Gene Expression In Visceral Adipose, Nathan Cuellar, Sogol Zahedi, David J. Buckley, Daniel W. Trott

International Journal of Exercise Science: Conference Proceedings

Advanced age remains the most important risk factor for the development of cardiovascular disease. Aging is also the major risk factor for hypertension and is associated with chronic inflammation and senescent cell accumulation. Cellular senescence, a state of irreversible cell cycle arrest, is characterized by cell cycle arrest and the secretion of inflammatory mediators known as the senescence-associated secretory phenotype (SASP). Senescent cells have been demonstrated to accumulate in the adipose tissue of old mice. Although cellular senescence plays a role in age-related vascular dysfunction, it is unknown whether hypertension can induce cellular senescence independent of age. PURPOSE: This study …

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Comparison Of Reds Risk Factors In Physique Focused And Non-Physique Focused Collegiate Athletes In The Dfw Metroplex, Nicole Cipriano, Diana Kolb, Ross Moody, Nicholas Lopez, Jason Stephens, Sarah Deemer Feb 2025

Comparison Of Reds Risk Factors In Physique Focused And Non-Physique Focused Collegiate Athletes In The Dfw Metroplex, Nicole Cipriano, Diana Kolb, Ross Moody, Nicholas Lopez, Jason Stephens, Sarah Deemer

International Journal of Exercise Science: Conference Proceedings

Physique-focused (PF) sports have a higher emphasis on aesthetics as an aspect for performance compared to non-physique-focused (NPF) sports. PF sports emphasize body image, leading athletes to prioritize leanness or low body weight, which could put them at increased risk for Relative Energy Deficiency in Sport (REDs). PURPOSE: This study aims to compare weight, body composition, bone mineral density (BMD), and EDE-Q global score between PF and NPF athletes to assess potential REDs risk. METHODS: 35 current Division I or II collegiate athletes from the DFW metroplex participated in this study. During a morning fasted visit (0700-0900), participants …

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Estimation Of Constant Power Cycle Ergometer Work Rates Using Responses In Incremental Exercise Tests, Ethan Hein, Sarah Deemer, Lydia K. Caldwell, Brady Mclain, Jacob Mcnary, Austin Shaw, David W. Hill Feb 2025

Estimation Of Constant Power Cycle Ergometer Work Rates Using Responses In Incremental Exercise Tests, Ethan Hein, Sarah Deemer, Lydia K. Caldwell, Brady Mclain, Jacob Mcnary, Austin Shaw, David W. Hill

International Journal of Exercise Science: Conference Proceedings

The severe exercise intensity domain is defined as the range of work rates that is sustainable for ~2 to 30 minutes and will elicit maximal oxygen uptake (VO2max). Laboratory controlled study designs often require a more stringent timeframe (e.g. 10 - 14 minutes) for achieving VO2max, making selection of individualized work rates a challenging task. PURPOSE: This study aimed to develop a regression equation to predict cycle ergometer work rates that would elicit VO2max and result in fatigue in ~12min (W12min). METHODS: Three women (mean ± SD, age, 23 ± 4 y; height, 168 ± 13 cm; body mass, 69 …

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Increases In Knee Extension Muscle Activation But Not Peak Torque Following High Intensity Training, Adriana Alonso Gomez, Sierra M. Washignton, Annalee G. Krahn, Sarah N. Fambro, Andrew J. West, Andru N. Botello, Adam C. Avalos, Andrew A. Wolfe, Michael J. Luera Feb 2025

Increases In Knee Extension Muscle Activation But Not Peak Torque Following High Intensity Training, Adriana Alonso Gomez, Sierra M. Washignton, Annalee G. Krahn, Sarah N. Fambro, Andrew J. West, Andru N. Botello, Adam C. Avalos, Andrew A. Wolfe, Michael J. Luera

International Journal of Exercise Science: Conference Proceedings

Autoregulatory progressive resistance exercise (APRE) modulates training intensity in response to individual performance to optimize increases in muscular strength. Muscular activation patterns during maximal torque production can provide additional insight to increased strength following an APRE training intervention. PURPOSE: The purpose of this study was to examine the effects of a 4-week APRE training program on peak torque and muscle activation in the vastus lateralis (VL) during maximal voluntary isokinetic knee extension. METHODS: Eight resistance trained males (age: 21.5 ± 2.3yrs; height: 176.5 ± 6.8cm; weight: 70.3 ± 17.8kg) participated in upper- and lower-body APRE 4-times per week for 4-weeks. …

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Does Probe Positioning And Pressure Effect The Reliability Of M-Wave Max?, Sierra M. Washington, Jocarol E. Shields, Alejandra Barerra-Curiel, Annalee Krahn, Jesus Hernandez-Sarabia, Cameron Mackey, Calvin D. Smith, Jason M. Defreitas, Micheal J. Luera Feb 2025

Does Probe Positioning And Pressure Effect The Reliability Of M-Wave Max?, Sierra M. Washington, Jocarol E. Shields, Alejandra Barerra-Curiel, Annalee Krahn, Jesus Hernandez-Sarabia, Cameron Mackey, Calvin D. Smith, Jason M. Defreitas, Micheal J. Luera

International Journal of Exercise Science: Conference Proceedings

Appropriate assessment of nerve function is vital to establish the outcomes of neuromuscular excitability, muscle activation, and the standardization of electromyographic data. Further, the determination of this measure has clinical relevance in the diagnosis of nerve disorders. However, factors such as probe orientation and pressure may lead to inconsistencies in the accurate assessment of nerve function. PURPOSE: The purpose of this study was to determine the interrater reliability of varying probe orientations and pressures on the maximal m-wave (M-wavemax). METHODS: Fourteen females and ten males (age: 20.9 ± 2.2yrs) underwent electrical stimulation to the median nerve and M-wavemax …

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