Medicine and Health Sciences Commons^™

Does Lower Body Negative Pressure Have A Differential Effect On Blood Pressure And Blood Flow During Exercise In Women?, Jacob B. Sievers, Youanaa A. Gendy, Yusuf I. Rizk, Daisy Hernandez Valadez, Areum K. Jensen

International Journal of Exercise Science: Conference Proceedings

In response to central hypovolemia, triggered by lower body negative pressure (LBNP), women appeared to have lower tolerance compared to men. In addition, women exhibit blunted pressor responses to exercise compared to men, while cardiac output is increased in a similar fashion. Nonetheless, redistribution of blood flow from central to contracting muscles is required to meet higher metabolic demands during exercise in both men and women. Thus, we thought to investigate the differential effect of LBNP during exercise in men and women. PURPOSE: To determine the role of LBNP on redistributing blood flow from central to contracting muscles during moderate …

Case Study: Can Quadriceps Muscle Growth Be Achieved In Aclr Patient With Neuromuscular Inhibition?, Melody F. Anderson, Lee J Hinkle, Steven P. Allen, Aaron W. Johnson

International Journal of Exercise Science: Conference Proceedings

Despite extensive research of ACL reconstruction surgery (ACLR) and rehabilitation, mobility and functional issues often persist, leading to complications beyond the initial injury. This case study presents exercises employed to overcome negative consequences following ACLR. Participant (23yo, F, 163cm, 52kg) underwent ACLR in 2019 after a complete left ACL tear. After 7 months of PT following surgery, the participant was cleared to return to sport and continued consistent activity until 4 years post ACLR. At this time, the participant presented with knee pain, edema exacerbated by activity, 20% loss of range of motion (ROM), and extensive atrophy of the quadriceps …

Reduced Exertion High Intensity Interval Training (Rehit) On The Rowing Ergometer Elicits Lower Blood Lactate Accumulation And Higher Enjoyment And Affective Valence Versus Cycle Ergometry, Todd Anthony Astorino Ph.D, Rasmus Dahl Clausen

International Journal of Exercise Science: Conference Proceedings

Reduced exertion high intensity interval training (REHIT) is an extremely time-efficient version of sprint interval training requiring two to three 20 s “all-out” sprints within a 10 min exercise session. Findings from laboratories in the UK (Metcalfe et al. 2012) and Canada (Gillen et al. 2016) show significant increases in VO₂max, glycemic control, and body composition in inactive adults completing 6 - 12 wk of cycling based REHIT. A prior study (Astorino et al. 2020) in 85 adults having diverse VO₂max values shows positive affective valence despite substantial blood lactate (BLa) accumulation. Whether REHIT can be …

Differences In Muscle Activation In Individuals With Bilateral And Unilateral Chronic Ankle Instability Ankle Instability, Tanner Lee, Hyunwook Lee, Seunguk Han, Minsub Oh, Jon Tyson Hopkins

International Journal of Exercise Science: Conference Proceedings

Individuals with chronic ankle instability (CAI) have altered muscle activation. However, little is known about the differences in muscle activation of the lower extremity in individuals with bilateral and unilateral CAI. PURPOSE: To investigate differences in muscle activations during single-leg stance in individuals with bilateral and unilateral CAI. METHODS: Sixty participants were divided into 3 groups: 20 individuals with bilateral CAI (bilateral), 20 individuals with unilateral CAI (unilateral), and 20 healthy controls (control). Participants performed 3 trials of single-leg stance while muscle activations were recorded for 10 seconds. During the stance, participants stood with hands crossed on their …

Differences In Postural Control In Individuals With Bilateral And Unilateral Chronic Ankle Instability, Ethan Wood, Hyunwook Lee, Seunguk Han, Minsub Oh, Jon Tyson Hopkins

International Journal of Exercise Science: Conference Proceedings

Individuals with chronic ankle instability (CAI) have deficits in postural control and muscle activation. However, little is known about the differences in postural control in individuals with bilateral and unilateral CAI. PURPOSE: To compare postural control difference in individuals with bilateral and unilateral CAI. METHODS: Sixty participants were divided into three groups: 20 individuals with bilateral CAI (bilateral), 20 individuals with unilateral CAI (unilateral), and 20 healthy controls (control). Participants performed 3 trials of single-leg stance tasks for 10 seconds simultaneously. During the single-leg stances, participants were instructed to stand as still as possible on a force plate …

Effects Of Ankle Swelling On Dynamic Postural Control In Individuals With Chronic Ankle Instability, Isaiah K. Githuka, Hyunwook Lee, Seunguk Han, Minsub Oh, Jon Tyson Hopkins

International Journal of Exercise Science: Conference Proceedings

Chronic ankle instability (CAI) individuals have ankle swelling as a residual symptom. Joint swelling following musculoskeletal injuries inhibits full neural activation of muscles, known as arthrogenic muscle inhibition. However, little is known about the effects of ankle swelling on dynamic postural control in CAI individuals. PURPOSE: To investigate the effects of ankle swelling on dynamic postural control in CAI individuals. METHODS: A total of 45 participants were recruited from a university population: 15 CAI individuals with swelling (swelling), 15 CAI individuals without swelling (non-swelling), and 15 healthy controls (control). All participants were measured ankle swelling using a figure …

Effects Of Ankle Swelling On Static Postural Control And Patient-Reported Outcomes In Individuals With Chronic Ankle Instability, Ashton Earl, Hyunwook Lee, Seunguk Han, Minsub Oh, Jon Tyson Hopkins

International Journal of Exercise Science: Conference Proceedings

Chronic ankle instability (CAI) individuals have ankle swelling as a residual symptom. Joint swelling frequently occurs and inhibits full neural activation of muscles, known as arthrogenic muscle inhibition. However, little is known about the effects of ankle swelling on static postural control and patient-reported outcomes about ankle function and instability in CAI individuals. PURPOSE: To investigate the effects of ankle swelling on static postural control in individuals with CAI. METHODS: A total of 45 participants were recruited from a university population: 15 CAI individuals with swelling (swelling), 15 CAI individuals without swelling (non-swelling), and 15 healthy controls (control). …

Virtual Reality-Based Assessment On Static Postural Control Among Individuals With Chronic Ankle Instability, Copers, And Controls., Minsub Oh, Hyunwook Lee, Seunguk Han, Jon Tyson Hopkins

International Journal of Exercise Science: Conference Proceedings

Individuals with chronic ankle instability (CAI) have deficits in postural control. Previous studies assessing postural control have been limited by minimal environmental perturbation. Little is known about adding dynamic environments using virtual reality (VR) during static postural control in individuals with CAI. PURPOSE: To identify the effects of VR-based assessment on static postural control among individuals with CAI, copers, and healthy controls. METHODS: A total of 60 participants, including 20 individuals with CAI, 20 copers, and 20 healthy controls, performed 3 trials of a single-leg stance for 10 seconds with eyes open (EO), closed (EC), and VR. During the …

The Effect Of Gripping Handles On Knee Flexors And Extensors Force Production During The Isokinetic Strength Test, Christopher Hernandez, Mikayla Rudis, Lukas Krumpl, Nickolai Martonick, Youngmin Chun

International Journal of Exercise Science: Conference Proceedings

Understanding how gripping handles influence force production of knee extensors and flexors during different types of muscle contractions is crucial to obtain consistent isokinetic strength testing results. While it has been investigated the effect of gripping handles in the isometric and concentric contractions of the knee joint at various velocities, there is a lack of evidence of how gripping handles affectknee extensors and flexors in eccentric contraction. PURPOSE: This research was conducted to investigate the effect of gripping handles on the force production of the knee extensors and flexors during concentric, eccentric, and isometric contractions at various velocities. METHODS …

Identifying Predictors Of Fat Oxidation In Response To Exercise Prescribed According To Relative And Metabolic Intensities, Athrva Deshpande, Todd Astorino Ph.D

International Journal of Exercise Science: Conference Proceedings

Capacity for fat oxidation (FOx) is related to endurance performance and metabolic health. Chrzanowksi-Smith et al. (2021) revealed that maximal O₂ consumption (VO₂max), resting FOx, and physical activity level significantly predict maximal fat oxidation. PURPOSE: To identify predictors of the metabolic response to endurance exercise. METHODS: Active, non-obese men and women (N = 36, age and VO₂max = 24 ± 4 yr and 2.8 ± 0.8 L/min) underwent 3 sessions of cycling separated by 3 – 7 days. All bouts were performed at the same time of day within participants. Initially, body fat and fat-free …

Comparing Body Composition Measures In Us Army Soldiers, Kishani Kirubaharan-Smith, James R. Bagley, Kent A. Lorenz, Maria J. Veri

International Journal of Exercise Science: Conference Proceedings

The United States (US) Army currently uses circumference measurements (with body mass index, BMI) to estimate body fat (BF) composition in soldiers. While this current system is easy to administer, it has been shown to have poor validity compared to other modern body composition assessment techniques, such as air displacement plethysmography (BodPod). Specifically, circumference/BMI measures do not account for different body types, especially among female soldiers. PURPOSE: This study aimed to compare 1) body composition measures in US Army Soldiers (BF% via circumferences vs BodPod) and 2) differences in BF% between males and females. We hypothesized there would be significant …

Is There A Limit To Muscle Swelling After An Acute Resistance Training Session With Multiple Sets?, Rex Ruswick, Paulo H. Marchetti

International Journal of Exercise Science: Conference Proceedings

The number of sets per session and muscle group is an important RT variable responsible for the acute influence of cell swelling and chronic gains in muscle mass and strength. PURPOSE: The primary purpose of this study was to evaluate the acute effects of multiple sets on muscle thickness after an RT session in recreationally trained subjects. METHODS: Twenty-one resistance-trained subjects were recruited to this study (16 males and 5 females; age 24 ± 2.5 years, total body mass 75.1 ± 11.4 kg, height 171.7 ± 8.8 cm). During the first session, a ten repetitions maximum (10RM) test was applied …

Mobile-Health In Cardiac Rehabilitation: A Scoping Review Of Randomized Controlled Trials In Patients With Coronary Artery Disease, Theodore I. Nania, Rigdon C. Waite, Robert Scales

International Journal of Exercise Science: Conference Proceedings

Participation rates in cardiac rehabilitation (CR) remain low within the United States, which challenges practitioners to consider alternative models of healthcare delivery. A mobile-Health (m-Health) communication platform has the potential to augment traditional modes of CR delivery. PURPOSE: This investigation conducted a scoping review of randomized controlled trials (RCTs) that evaluated the effectiveness of m-Health delivered CR interventions in patients with coronary artery disease (CAD). METHODS: PubMed and Embase were searched using a custom search string, including keywords such as “coronary artery disease”, “cardiac rehabilitation”, “mobile application” and “digital health”. The author, title and abstract of all identified …

Relationship Among Bmi, Body Surface Area, Fluid Intake, And Sweat Rate On Elite Marching Arts Performers: A Pilot Study, Haydin C. Pazdur, Angela Haven A. Barandino, Miracle M. Busby, Daniela E. Ferreras, Theodore M. Locey, Michael M. Rodriguez, Christopher R. Hill, April Karlinsky, Jason Ng

International Journal of Exercise Science: Conference Proceedings

Elite groups of marching arts performers train at various intensities for long durations. They travel the country through a variety of climates, making hydration an important consideration. PURPOSE: The purpose of our pilot study was to evaluate the relationships between body mass index (BMI), body surface area (BSA), fluid intake, and sweat rate in elite marching arts performers. METHODS: We sampled 6 male and 1 female elite marching arts performers (mean ± SD; age: 20 ± 1 y, height: 177.0 ± 6.0 cm, body mass: 72.3 ± 9.1 kg). BMI was calculated by collecting height on a stadiometer and nude …

Anti-Cachexia Effect Of Polymorphonuclear Myeloid-Derived Suppressor Cell Depletion Therapy Is Not Present In Tumor-Bearing Mice Lacking T And B Cells, Hailey K. Gorman, Jonathan Specht, Michael Deyhle

International Journal of Exercise Science: Conference Proceedings

Polymorphonuclear (PMN) Myeloid-derived suppressor cells (MDSCs), are associated with poor cancer prognosis, partly due to their immunosuppressive effects on anti-cancer immunity. Cancer cachexia, characterized by debilitating skeletal muscle wasting, further reduces patient survival. Previously, antibody-mediated (anti-Ly6G) depletion of PMN-MDSCs attenuated skeletal muscle loss in mouse model of cancer cachexia. The mechanism by which PMN-MDSCs contribute to cachexia is unclear. Given the role that PMN-MDSCs play in supporting cancer disease progression depends on inhibiting anti-cancer adaptive immunity, we tested if the beneficial effects of PMN-MDSCs depletion on cachexia depend on the presence of adaptive immune cells. PURPOSE: We hypothesize that the …

The Effect Of Beetroot Juice Supplementation Dose On Neuromuscular Performance During Resistance Exercise, Raymond T. Gerardo, Isabella G. Lincoln, Keonabelle P. Paniagua, Justin M. Foster, Lauren E. Wideen, Nathan J. Ornelas, Isaac Tchaprazian, Jeffrey Li, Michael Egiazarian, Adam Pennell, Rachel Tan

International Journal of Exercise Science: Conference Proceedings

Nitrate-rich beetroot juice may have more pronounced ergogenic effects on exercise that requires high-power and high-velocity muscle contraction; however, the efficacy of, and the optimal dosing for nitrate to enhance resistance exercise performance is unknown. PURPOSE: To assess whether nitrate elicits dose-dependent ergogenic effects during a battery of resistance exercises in resistance-trained men. METHODS: Eighteen resistance-trained men were assigned in a randomized, double-blind, crossover design to consume 280 ml nitrate-depleted beetroot juice (PL; negligible nitrate), 70 ml nitrate-rich beetroot juice and 210 ml nitrate-depleted beetroot juice (BR-LOW; ~6.5 mmol nitrate), 140 ml nitrate-rich beetroot juice and 140ml nitrate-depleted …

No Sex Differences In Metabolic Responses To Submaximal Exercise, Alexander J. Macdonald, Alexander M. Anderson, Hanna Lauritzen, Ryan Pinter, Madison Mower, Todd Astorino Ph.D Facsm

International Journal of Exercise Science: Conference Proceedings

Tarnopolsky et al. (1990) showed significantly higher fat oxidation (FOx) in women versus men during endurance exercise, likely due to their higher concentrations of estrogen and type I muscle fibers. Prior studies support this stance (Venables et al. 2000), yet Wallis et al. (2006) showed no effect of sex on the metabolic response to exercise. PURPOSE: To compare substrate metabolism between men and women during submaximal exercise prescribed using metabolic (percent ventilatory threshold, %VT) and relative (percent maximal heart rate, %HRmax) intensities. METHODS: Healthy, non-obese men (n = 23) and women (n = 13) (age, % fat, and VO_{2 …}

Effect Of Daily Training On Hydration Status Of Elite Marching Arts Performers: A Pilot Study, Angela Haven A. Barandino, Miracle M. Busby, Daniela E. Ferreras, Theodore Locey, Haydin C. Pazdur, Michael Rodriguez, Christopher R. Hill, April Karlinsky, Jason Ng

International Journal of Exercise Science: Conference Proceedings

Every year, elite groups of of marching arts performers travel across the United States during the summer months of June through August, where they encounter different climates. Daily training for marching arts performers often takes place outdoors in the heat, but it is unclear what these individuals experience with regard to their hydration levels. PURPOSE: The purpose of this study was to investigate daily changes in hydration status among marching arts performers. METHODS: For this pilot investigation, we studied 3 men and 1 woman (mean ± SD; age: 20 ± 1 y, height: 174.1 ± 4.6 cm, body …

Correlation Between Pre-Exercise Hydration Status And Heart Rate Of Female Division Ii Collegiate Distance Runners During A Training Session, Daniela E. Ferreras, Alma I. Martinez, Cody M. Billings, Haydin C. Pazdur, Angela Haven A. Barandino, Robert Hernandez, Tamara Rodriguez, Christopher R. Hill, April Karlinsky, Jason Ng

International Journal of Exercise Science: Conference Proceedings

Female athletes participating in Division II collegiate sports are an understudied population. While athletes’ pre-exercise hydration status is known to have an important impact on a variety of performance metrics, it is unknown whether their pre-exercise hydration is associated with heart rate responses during a subsequent exercise bout. PURPOSE: The purpose of this study was to examine the correlation between pre-exercise hydration status and exercise heart rate (HR) of female distance runners on a Division II collegiate track and field team. METHODS: 8 female distance runners (Mean ± SD; age: 21 ± 1.8 y, height: 161.2 ± 10.8 cm, mass: …

Relationship Between Body Mass Index And Hydration Status In Air Force Rotc Cadets, Ivan P. Flores, Michael M. Rodriguez, Alma I. Martinez, Haydin C. Pazdur, Angela Haven A. Barandino, Christopher R. Hill, April Karlinsky, Jason Ng

International Journal of Exercise Science: Conference Proceedings

The Air Force Reserve Officer Training Corps (AFROTC) program prepares young individuals for their future as officers in the United States Air Force. This is a unique population because these cadets are college students who must maintain physical fitness through regular group exercise training. Previous research has identified that proper hydration is important to optimize training sessions. However, it is unknown whether the body size of this population is connected to their hydration status before and after exercise. PURPOSE: To examine the relationship between body mass index (BMI) and hydration status and the differences between BMI classifications of AFROTC cadets. …

Correlation Between Voluntary Fluid Intake And Sweat Rate Of Air Force Rotc Cadets During Outdoor Exercise, Michael M. Rodriguez, Alma I. Martinez, Haydin C. Pazdur, Angela Haven A. Barandino, Daniela Ferreras, Theodore M. Locey, Christopher R. Hill, April Karlinsky, Jason Ng

International Journal of Exercise Science: Conference Proceedings

The Air Force Reserve Officer Training Corps (ROTC) is a training program that gives individuals the opportunity to become leaders in and outside of the classroom while they prepare for their careers as officers in the United States Air Force or Space Force. This is a unique group of college students training to become tactical operators, which involves participating in regular group physical training. To optimize training, cadets should incorporate proper hydration strategies. Ideally, fluid intake volume should match sweat losses, however ROTC cadets’ hydration practices remain unclear. PURPOSE: The purpose of this study was to examine the relationship …

Relationship Between Exercise Intensity And Voluntary Fluid Intake In Air Force Rotc Cadets, Theodore M. Locey, Alma I. Martinez, Haydin C. Pazdur, Daniela E. Ferreras, Angela Haven A. Barandino, Christopher R. Hill, April Karlinsky, Jason Ng

International Journal of Exercise Science: Conference Proceedings

Air Force ROTC cadets are college students simultaneously receiving training to serve as officers in the United States Air Force. Regular group exercise is part of this training program, and good hydration habits would be conducive to optimizing the exercise sessions. However, it is unclear whether exercise intensity might influence this special population's voluntary drinking behaviors in a manner that is sufficient for optimizing exercise training sessions. PURPOSE: Therefore, the purpose of this study was to examine the relationship between exercise intensity and voluntary fluid intake in Air Force ROTC cadets during a typical training session. METHODS: Nine …

Self-Reported Fall Risk With The Stop Elderly Accidents, Deaths, And Injuries (Steadi) Questionnaire In An Early Outpatient Cardiac Rehabilitation Population, Daniel L. Enriquez, Jon Vimmerstedt D.O., Frank T. Paul Iii, Zeyu Song M.S., Bryan J. Taylor Ph.D., Facsm, Casey L. Filler M.S., Kaitlin E. Moore M.S., Molly C. Tomah M.S., Regis I. Fernandes M.D., Mike Studer Pt, Dpt, Fapta, Robert Scales Ph.D., M.S.

International Journal of Exercise Science: Conference Proceedings

An age-related decline in musculoskeletal health and physical function (PF) may contribute to frailty and lead to increased fall risk (FR). Traditional cardiac rehabilitation (CR) programs prioritize aerobic exercise conditioning with less emphasis on FR screening and prevention with related individualized PF training. PURPOSE: This study evaluated the prevalence of self-reported FR among patients enrolled in an early outpatient CR program. METHODS: Fifty-one adults (80% male; age 74.9 ± 6.7 years) agreed to complete the screening portion of the Center for Disease Control and Prevention (CDC) Stop Elderly Accidents, Deaths, and Injuries (STEADI) tool kit, which consisted of 12 …

Input Of Sex Data Does Not Affect Metabolic Variables Returned From The Cosmed K5 Unit During Exercise, Olivia R. Perez, Michael W.H Wong, Dustin W. Davis, James W. Navalta

International Journal of Exercise Science: Conference Proceedings

There is a sex-data gap in sport and exercise, which results in an underrepresentation of female participants and increases the possibility of misgendering individuals who identify other than the female-male binary. A potential barrier to gender inclusivity could be that common exercise science equipment and software are limited to binary options for sex, excluding people who identify as gender minorities. PURPOSE: The purpose of this study was to evaluate whether sex data input into the COSMED K5 had a direct effect on metabolic outcome variables. METHODS: Seven adult participants (age = 29.6 ± 10.8 years, height = 172.6 ± 8.5 …

The Effects Of Music On Force Production, Pleasure, Perceived Exertion, Fatigue, And Recovery During An Isokinetic Strength Task, Ainsley Nommensen, Leighton Jones, Zachary Zenko

International Journal of Exercise Science: Conference Proceedings

Music is frequently listened to during exercise to enhance the overall experience. Prior research suggests promising effects of music for enhancing pleasure experienced during exercise, reducing perceived exertion, reducing fatigue, and enhancing recovery. PURPOSE: The purpose of this study was to offer new insights into how self-selected music can impact affective responses, perceptions of exertion and fatigue, and performance on a resistance exercise task. METHODS: A total of 34 participants (21 women and 13 men, mean age: 22 ± 6 years) completed two sessions of isokinetic resistance exercise in a counterbalanced order. In the experimental session, participants listened …

Erα Governs The Sexual Dimorphism In Hsp72-Mediated Control Of Mitochondrial Function, Exercise Capacity, And Insulin Sensitivity In Mice, Noelle Morrow, Amanda Lin, Zhenqi Zhou, Hirotaka Iwasaki, Brian Drew, Mark Febbraio, Andrea Hevener

International Journal of Exercise Science: Conference Proceedings

HSP72 is a chaperone protein upregulated during exercise. Levels are reduced in aging and obesity, and increased levels are correlated with improvements in metabolic health in male mice and humans. Male HSP72KO mice have increased body fat, decreased insulin sensitivity, and a loss of mitochondrial quality control. Specifically, male KO mice have increased cytosolic Parkin levels, but the protein is unable to move to the mitochondria resulting in enlarged, hyperfused mitochondria associated with metabolic dysfunction. PURPOSE: To investigate the role of HSP72 in female mice to better understand the sexual dimorphism involved in the heat shock response. METHODS: …

Lower Extremity Muscle Volume As A Prediction For Sprint Speed In Collegiate Football Players, Malorie Wilwand, Joshua Sponbeck, Steven P. Allen, Greg Snow, Iain Hunter, Aaron W. Johnson

International Journal of Exercise Science: Conference Proceedings

Sprinting is a crucial component of success in American football regardless of the position group. PURPOSE: To evaluate the relationship between muscle volume (MV) of the lower body muscles and sprint performance among different AF position groups. METHODS: This was a secondary analysis from the HAMIR study. The study included NCAA Division I AF players aged 18 and older who were active on the roster and not injured at the time of data collection. Positions were grouped as follows: the combo group (linebackers and tight ends), the big group (offensive and defensive linemen), and the skill group (defensive …

Influence Of Fitness On Moderate-Intensity Blood Pressure Responses In Normotensive And Hypertensive Individuals, Joseph Larsen, Jayson Gifford

International Journal of Exercise Science: Conference Proceedings

Early detection and treatment is important in cardiovascular disease because arteries are often occluded by 75% or more before symptoms become apparent. Exercise blood pressure has been shown to be predictive of future cardiovascular disease independent of resting blood pressure. However, many factors affecting exercise blood pressure need to be further investigated and described before exercise blood pressure can become a common practice. PURPOSE: To investigate how exercise intensity and fitness influence the blood pressure response in hypertensive and normotensive individuals. We hypothesized that hypertensive participants would have greater increases in exercise blood pressure than normotensive subjects during a …

Football Player Achilles Tendon Size Decreases Following Lower Body Strengthening Exercises With An Observed Increase In Blood Flow To The Tendon, Jeffrey J. Stewart, Lee J Hinkle, Austin Goodrich, Malorie Wilwand, Gabe Davidson, Bryson T. Schaugaard, B. Brett Mortensen, Matthew K. Seeley, A. Wayne Johnson

International Journal of Exercise Science: Conference Proceedings

ABSTRACT

The loading forces experienced during exercise may cause morphological and vascularization changes in the Achilles tendon. The Achilles tendons of runners decrease in cross-sectional area (CSA) after a distance run. Understanding acute morphological changes as a result of single bouts of exercise gives insight to clinicians about how to organize and recommend training sessions and recovery and may inform injury risk. Purpose: This study aims to characterize changes in tendon thickness, CSA, and blood flow of Division I collegiate football (FB) players before and after a bout of strengthening exercise. Methods: Twenty-nine participants (height: 189±5.62 cm, weight: 106±19.0 kg, …

Effect Of Caffeine On Symptoms And Biomarkers Of Gastrointestinal Injury After Physical Work In The Heat, Marissa Ramirez, Jonathan Specht, Fabiano Amorim

International Journal of Exercise Science: Conference Proceedings

Effect of Caffeine on Symptoms and Biomarkers of Gastrointestinal Injury After Physical Work in the Heat

MARISSA RAMIREZ, JONATHAN W. SPECHT, FABIANO T. AMORIM

Exercise Science Laboratory; Department of Health, Exercise, and Sport Sciences; University of New Mexico; Albuquerque, NEW MEXICO

Category: Doctoral

Advisor / Mentor: Amorim, Fabiano ([email protected])

ABSTRACT

Several job industries require substantial prolonged physical exertion in hot environmental conditions which increases the risk of heat-related illnesses. Endotoxemia, a hallmark of exertional heat stroke, is defined by increased levels of circulating lipopolysaccharides, often caused by gastrointestinal (GI) injury and subsequent permeability. Caffeine is a stimulant frequently used among …