King-Devick Test Score Is Linked To Cerebral Vasoreactivity During Acute Recovery Phase Post-Concussion,
2020
Southern Methodist University
King-Devick Test Score Is Linked To Cerebral Vasoreactivity During Acute Recovery Phase Post-Concussion, Madison E. Mccredie, Abigail Reichow, Mathew Stokes, Kathleen R. Bell, Sushmita Purkayastha
International Journal of Exercise Science: Conference Proceedings
The King-Devick (KD) test is a quick screening tool used to detect oculomotor and attention related brain function impairments following a concussion. Adequate cerebral blood flow (CBF) is an indicator of structural and functional integrity and impairments in CBF have been linked to cognitive deficits following concussion. Cerebral vasoreactivity (CVR), a key measure of hemodynamic reserve, is an important factor in CBFregulation. PURPOSE: To examine the association between CVR and oculomotor and attention function, using KD test scores, in collegiate athletes following a concussion. METHOD: Eighteen male and female athletes diagnosed with a sports-related concussion were enrolled in the prospective …
Impact Of Astaxanthin Supplementation On Postprandial Oxidative Stress,
2020
Texas State University
Impact Of Astaxanthin Supplementation On Postprandial Oxidative Stress, Liliana I. Renteria, Matthew J. Mcallister
International Journal of Exercise Science: Conference Proceedings
Astaxanthin is a naturally occurring carotenoid found in salmon and microalgae that has antioxidative properties. Previous research shows dietary supplementation may result in increased endogenous antioxidant status and reduced markers of oxidative stress (OS). Research suggests OS causes increased risk for cardiometabolic and other chronic diseases, making it important to find interventions that can decrease occurrence of OS. While astaxanthin has been shown to be antioxidative, most studies observing the impact of astaxanthin has on OS has involved rodent models, therefore human trials are needed. PURPOSE: The purpose of this study was to assess whether four weeks of astaxanthin supplementation …
The Assessment Of Hydration Status And Renal Markers Associated With Acute Kidney Injury In Ncaa Division I Female Soccer Players During Preseason Training In South Texas: A Pilot Study,
2020
Texas A&M University- Corpus Christi
The Assessment Of Hydration Status And Renal Markers Associated With Acute Kidney Injury In Ncaa Division I Female Soccer Players During Preseason Training In South Texas: A Pilot Study, Jordan B. Wainwright, Julia N. Wallen, Anthony M. Sanchez, Noe Deanda, Xavier F. Gonzales, Darryn S. Willoughby, Heather E. Webb, Daniel E. Newmire
International Journal of Exercise Science: Conference Proceedings
Recent research suggest that recurrent heat-associated dehydration and strenuous physical exertion may be associated with the development of acute and potentially chronic renal dysfunction. Typical South Texas environmental conditions in August, during preseason, on NCAA female college athletes may warrant concerns for promoting acute kidney injury (AKI). PURPOSE: The purpose of this study is to investigate hydration status and renal biomarkers in NCAA Division I female soccer athletes in South Texas during the preseason. METHODS: (Mean ± SEM; n = 12; age: 19.5 ± 0.9 y; ht: 167.6 ± 6.24 cm; wt: 66.6 ± 10.15 kg). Each subject …
Impact Of Fluid Consumption On Estimates Of Intracellular, Extracellular, And Total Body Water From Multi-Frequency Bioelectrical Impedance Analysis,
2020
Texas Tech University
Impact Of Fluid Consumption On Estimates Of Intracellular, Extracellular, And Total Body Water From Multi-Frequency Bioelectrical Impedance Analysis, Marqui Benavides, Baylor A. Johnson, Patrick S. Harty, Matthew T. Stratton, Jacob Dellinger, Robert W. Smith, Abegale D. Williams, Christian Rodriguez, Sarah White, Grant M. Tinsley
International Journal of Exercise Science: Conference Proceedings
Multi-frequency bioelectrical impedance analysis (MFBIA) is able to distinguish between total body water (TBW), extracellular water (ECW) and intracellular water (ICW). Low-frequency currents are thought to primarily pass through ECW, while high-frequency currents pass through all body fluids (i.e., TBW). ICW can then be estimated by subtracting ECW from TBW. As such, MFBIA may have utility for monitoring health conditions resulting in water retention within specific fluid compartments. However, the sensitivity of fluid estimates from MFBIA is not fully established. PURPOSE: To evaluate the effects of acute fluid ingestion on body water estimates produced by a MFBIA analyzer. METHODS …
Effects Of Virtual Reality During Rowing Ergometry On Metabolic And Performance Parameters,
2020
University of Houston, Clear Lake
Effects Of Virtual Reality During Rowing Ergometry On Metabolic And Performance Parameters, Tomas Chapman-Lopez, Nicholas J. Kelling, David J. Arecemant, William E. Amonette, Kirk L. English
International Journal of Exercise Science: Conference Proceedings
Physical activity and moderate or intense exercise improve musculoskeletal and metabolic health; however, approximately 80% of Americans do not meet the minimum exercise recommendations from the American College of Sports Medicine (ACSM) or the Centers for Disease Control (CDC). Exercise intensity may be the most important factor in eliciting positive physical outcomes with exercise. PURPOSE: To assess the effectiveness of a proprietary virtual reality (VR) interface to increase metabolic and physical performance during rowing ergometry. METHODS: A novel VR software program for rowing ergometry was developed. Subsequently, sixteen apparently healthy, recreationally active individuals (12M, 4F; 35.5 ± 13.9 …
Acute Effect Of Hyperglycemia On The Mechanoreflex And Metaboreflex,
2020
the University of Texas at Austin
Acute Effect Of Hyperglycemia On The Mechanoreflex And Metaboreflex, Yu Huo, Ann-Katrin Grotle, Michelle L. Harrison, Audrey J. Stone
International Journal of Exercise Science: Conference Proceedings
Recent studies in both humans and rodents have shown that the mechanoreflex and metaboreflex are exaggerated in type 2 diabetes mellitus (T2DM). Hyperglycemia is a main characteristic of T2DM and is known to cause damage to both cardiovascular and nervous system structures. However, the acute effect of the presence of hyperglycemia on the mechanoreflex and metaboreflex are not known. PURPOSE: To determine the acute effect of hyperglycemia on the mechanoreflex and metaboreflex. METHODS: Experiments were conducted after an overnight fast in unanesthetized, decerebrated healthy male and female Sprague-Dawley rats. The mechanoreflex was evoked by stretching the Achilles tendon …
Cross-Validation Of A Prediction Equation For Energy Expenditure Of An Acute Resistance Exercise Bout,
2020
Texas A&M University, College Station
Cross-Validation Of A Prediction Equation For Energy Expenditure Of An Acute Resistance Exercise Bout, Sean T. Stanelle, Jason Lytle Mr., Bradley Lambert, Steven E. Martin, John S. Green Ph.D., Stephen F. Crouse
International Journal of Exercise Science: Conference Proceedings
Previously, our laboratory introduced a regression equation for predicting net kcal consumption of a resistance exercise (RE) bout: Total net kcal = 0.874(height, cm) - 0.596(age, years) - 1.016(fat mass, kg) + 1.638(lean mass, kg) + 2.461(total volume x 10-3) - 110.742 (R2 = 0.773, SEE=28.5 kcal). PURPOSE: The purpose of this study was to validate this regression equation using the same variables as predictors. METHODS: Forty-seven healthy, active subjects (23 men, 24 women, 20-58 yrs, 173.5 ± 10.5 cm, 85.5 ± 19.0 kg, VO2max 36.0 ± 8.4 ml/kg/min) were randomly divided into validation …
Positional Differences In Running Distance And Speed Among Collegiate Rugby 7s Players,
2020
University of Mary Hardin-Baylor
Positional Differences In Running Distance And Speed Among Collegiate Rugby 7s Players, Jessica Prather, Javier Zaragoza, Matthias Tinnin, Ariane Secrest, Justin Goonan, Lemuel W. Taylor Iv
International Journal of Exercise Science: Conference Proceedings
Rugby sevens (7s) is an anaerobic contact sport consisting of seven players per team, with two 7-minute halves per match played in tournament style with several matches over up to a three-day event. However, due to the nature of the collegiate game, less funding, and their academic schedule, the tournaments are commonly consolidated into one day (minimum 3, as many as 6 matches). While there are six positions in 7s, this study divided them into three groups: Forwards (FW), Backs (BK), and Scrum halves (SH). Purpose: The purpose of this investigation was to identify the physiological and physical demands …
Relationship Of Blood Lactate And Sweat Lactate On Exercise Intensity,
2020
Lamar University
Relationship Of Blood Lactate And Sweat Lactate On Exercise Intensity, Julio B. Morales, Shannon L. Jordan, Alan D. Moore, Lauren M. Ocnaschek, Katherine Kolp, Bassam U. Syed, Zaid Mohammed
International Journal of Exercise Science: Conference Proceedings
Typical procedures for measuring blood lactate involve either finger stick blood samples or venous blood draws. The literature is equivocal regarding whether sweat lactate values change with exercise intensity. Recently, wearable technology devices have been developed to measure sweat lactate. Purpose: To examine the relationship between sweat lactate and blood lactate values during incremental exercise. Methods: This study consisted of 12 (8 male, 4 female) healthy recreationally active individuals (VO2peak 35.5 ± 7.6 ml/kg/min) between the ages of 18 and 25 (22 ± 2 yrs) who volunteered for the study. Participants performed an exercise test on a cycle ergometer …
Improved Glucose Tolerance And Glucose Utilization With Neuromuscular Electrical Stimulation,
2020
University of Texas at El Paso
Improved Glucose Tolerance And Glucose Utilization With Neuromuscular Electrical Stimulation, Michael J. Sanchez, Michelle Galvan, Dante Nacim, Sudip Bajpeyi
International Journal of Exercise Science: Conference Proceedings
Sedentariness and increased body fat are the leading risk factors for developing insulin resistance, obesity, and type 2 diabetes. We have shown that muscle contraction induced by electrical pulse stimulation increase GLUT4 content in an in vitro primary cell culture model. Neuromuscular electrical stimulation (NMES) is a novel alternative strategy to induce muscle contraction in humans. Although widely used in rehabilitation settings to prevent muscle atrophy, effectiveness of NMES-induced muscle contractions in improving metabolic health is not clear. PURPOSE: To investigate the effects of four weeks of NMES on glucose tolerance, substrate utilization, and muscle mass in a sedentary overweight/obese …
Sex Differences In Power Output At Maximal Load During The Barbell Squat,
2020
Tarleton State University
Sex Differences In Power Output At Maximal Load During The Barbell Squat, Lyndsey T. Mccallister
International Journal of Exercise Science: Conference Proceedings
When maximal muscular power outputs are examined relatively, sex differences appear to be non-existent. In terms of absolute power, however, significant differences persist between sexes. In both cases, the majority of metrics are obtained at optimal loads for power outputs. However, little is known in regards to differences in power outputs at maximal strength capacity of men and women. PURPOSE: The current investigation aimed to identify sex differences of concentric (C) and eccentric (E) power measures at maximal load during the barbell back squat (SQ). METHODS: A total of 8 participants (4 men and 4 women) completed one …
The Effects Of Slow Deep Breathing On Measures Of Microvascular And Autonomic Function In An Irritable Bowel Syndrome Population,
2020
Texas State University
The Effects Of Slow Deep Breathing On Measures Of Microvascular And Autonomic Function In An Irritable Bowel Syndrome Population, Mary Katherine Jurek, Hannah N. Seavey, Meredith E. Guidry, Emily L. Slomka, Stacy D. Hunter
International Journal of Exercise Science: Conference Proceedings
Irritable Bowel Syndrome (IBS) is a functional disorder linked to disruptions in autonomic nervous system regulation, which could impair vascular homeostasis. Studies have shown that slow, deep breathing reduces muscle sympathetic nerve activity and arterial stiffness; however, its effects on autonomic regulation in adults with IBS have not been previously investigated. Moreover, the effects of breathing on microvascular endothelium function are unknown. PURPOSE: To investigate the effects of slow, deep breathing on measures of autonomic function and microvascular endothelial function in adults with IBS. METHODS: Adults (ages 18-65 years) with a formal diagnosis of IBS were enrolled and …
Acute Effects Of Squat Position And Whole-Body Vibration Frequencies On Muscular Function And Jump Performance,
2020
University of Texas Rio Grande Valley
Acute Effects Of Squat Position And Whole-Body Vibration Frequencies On Muscular Function And Jump Performance, Jonathan Tyler Gonzalez, Imtiaz Masfique Dowllah, Nancy Calle, Gualberto Garza Iv, Galilea Chapa, Julissa Perez, Jose M. Sosa, Liana Chee, Ulku Karabulut, Murat Karabulut
International Journal of Exercise Science: Conference Proceedings
PURPOSE: To determine the acute effects of different whole-body vibration (WBV) frequencies and squat depths on lower extremity isometric and isokinetic muscle function and vertical jump performance. METHODS: Thirteen healthy male (age = 23.8 ± 5.3 years) and fifteen healthy female subjects (age = 22.45 ± 3.04 years) performed six randomized sessions of vibration protocols (VPs) in different squat positions with 90° (low-squat) and 140° (high-squat) knee flexion angle at 30 Hz (30Hz90°; 30Hz140°), 40 Hz (40Hz90°; 40Hz140°) & 50 Hz (50Hz90°; 50Hz140°). Each subject performed 5 sets x 1-min of static squats with 30-sec rest between each …
Water Immersion Skin Wrinkling: The Influence Of Age, Sex, And Adiposity,
2020
University of Texas, Austin
Water Immersion Skin Wrinkling: The Influence Of Age, Sex, And Adiposity, Jonathon Kava, Daroonwan Suksom, Hirofumi Tanaka
International Journal of Exercise Science: Conference Proceedings
From the evolutionary perspective, water immersion skin wrinkling (WISW) is the perceived water drainage to enhance grip in wet conditions. In the modern medicine, it is a noninvasive test of limb sympathetic function and can be used to assess peripheral neuropathy. WISW occurs as sympathetically-mediated contraction of subcutaneous glomus bodies after perturbation of ion concentration in palmar sweat glands. This phenomenon has not been studied well. Currently, it is not clear if common demographic variations (e.g., age, sex, and adiposity) that impact overall cardio-autonomic health status also affect WISW. Purpose: The purpose of the present study is to determine if …
Acute Renal Responses To Moderate-Intensity Aerobic Exercise With Non-Traditional Markers Of Renal Health And Function In Healthy Individuals: A Pilot Study,
2020
Stephen F Austin State University
Acute Renal Responses To Moderate-Intensity Aerobic Exercise With Non-Traditional Markers Of Renal Health And Function In Healthy Individuals: A Pilot Study, David J. Buckley, Ahmed Ismaeel, Kathleen Adair, Autumn Oliver, Evlampia Papoutsi, Kaitlyn Prezioso, Panagiotis Koutakis, Jeffrey Forsse
International Journal of Exercise Science: Conference Proceedings
Aerobic exercise elicits a multitude of physiological improvements in both healthy and diseased populations. However, acute changes in renal function with aerobic exercise remain difficult to quantify by traditional marker serum creatinine (sCr) to estimate glomerular filtration rate (eGFR). Recently, novel biomarkers cystatin C (CyC) and urine epidermal growth factor (uEGF) have been introduced as more reliable markers of renal health and function to be used in conjunction with sCr to assess changes in renal health and function in mid-spectrum CKD. Potentially, greater changes in novel markers of renal health and function similar to mid-spectrum CKD can be observed in …
A Practical And Easier Measure Of Endothelial Function Applicable To The Routine Clinical Setting?,
2020
The University of Texas at Austin
A Practical And Easier Measure Of Endothelial Function Applicable To The Routine Clinical Setting?, Melanie Heath, Drew Gourley, Morteza Naghavi, Stanley Kleis, Hirofumi Tanaka
International Journal of Exercise Science: Conference Proceedings
The VENDYS-II is an alternative, fully automated and noninvasive methodology to evaluate endothelial function using temperature change on finger as a surrogate measure of the magnitude of vascular reactivity index (VRI). Due to the simplicity, it could provide a more feasible technique to assess vascular endothelial function in the clinical setting and possibly for home-based measurements similar to blood pressure. A most recent modification to the technique includes the application of cuff occlusion at the base of a finger instead of the upper or lower arm. Purpose: To assess the validity of the VENDYS-II device compared with the standard …
Females Have An Increased Sensitivity To Thermal Stress During Matched Exercise Metabolic Heat Production,
2020
Texas Tech University, Lubbock
Females Have An Increased Sensitivity To Thermal Stress During Matched Exercise Metabolic Heat Production, Lauren Schoech, Kyleigh Allie, Paolo Miguel Salvador, Mauricio Martinez, Eric Rivas
International Journal of Exercise Science: Conference Proceedings
Females report greater sensitivity in pain and cold exposures. PURPOSE: It is unclear how thermal sensitivity is affected when the change for internal temperature (ΔTin) and metabolic heat production (MHprod) are matched during exposure to hot conditions. This project tested the hypothesis that females have enhanced sensitivity to thermal stress during exercise hyperthermia when ΔTin and MHprod is matched. METHODS:Twenty-two healthy active (7 day activity: 8620±3008 steps/day; VO2max: 49±10 mL/kg/min) adults (11M/11F, 22.4±4.9y, 169±7.6cm, 68.3±13kg) exercised at similar MHprod (M: 7.1±1.5 W/kg, F: 6.9±1.4 W/kg; P=0.32) for 60 min (cycle ergometer) …
An Examination Of The Effects Of Various Procedures To Improve Delayed Onset Muscle Soreness,
2020
University of Texas Rio Grande Valley, Brownsville, TX.
An Examination Of The Effects Of Various Procedures To Improve Delayed Onset Muscle Soreness, Michael Vela, Amanda Skaggs, Andrew Gutierrez, Caitlin Tagle, Kevin Canales, Mayra Limas, Gabriel Figueroa, Ulku Karabulut, Murat Karabulut
International Journal of Exercise Science: Conference Proceedings
Delayed onset muscle soreness (DOMS) is a condition typically accompanied with muscular pain and stiffness. Prior research suggests that applying external pressure to muscle following DOMS may aid in the recovery process. PURPOSE: To examine the acute effects of various recovery methods on DOMS. METHODS: Following intense DOMS-inducing exercise, nine males (age = 23.6 ± 2.4 years) were exposed to three treatment conditions (foam rolling (FR); body tempering (BT); blood flow restriction (BFR)) or control in a random order. Resting blood pressures were observed and recorded each laboratory visit. Subjects warmed up with a 5-minute treadmill walk at …
Comparison Of Bioimpedance Analysis And Dual Energy X-Ray Absorptiometry In Division Iii Football Athletes,
2020
University of Mary Hardin-Baylor
Comparison Of Bioimpedance Analysis And Dual Energy X-Ray Absorptiometry In Division Iii Football Athletes, Dylan J. Birdsell, Grant Tinsley, Javier Zaragoza, Matthias Tinnin, Jessica Prather, Christine Harrison, Shay Smith, Chris Lockwood, Lem Taylor
International Journal of Exercise Science: Conference Proceedings
Body composition is an integral component of physiology and pathology, as well as an indication of how the musculoskeletal system changes over time in response to training and/or nutritional modifications. Two common methods of estimating body composition include bioelectrical impedance analysis (BIA) and dual-energy X-ray absorptiometry (DXA). There is a debate regarding the agreement between these two methods, and it is thought that the population being tested may influence the similarity of estimates obtained by these technologies. Limited data comparing these two methodologies in athletic populations are available. PURPOSE: The purpose of this study was to take examine the agreement …
Impairments In Cerebral Autoregulation Is Associated With Postural Control In Sports Related Concussion,
2020
Southern Methodist University
Impairments In Cerebral Autoregulation Is Associated With Postural Control In Sports Related Concussion, Abigail L. Reichow, Madison Mccredie, Mathew Stokes, Kathleen R. Bell, Sushmita Purkayastha
International Journal of Exercise Science: Conference Proceedings
Global and regional deficits in cerebral blood flow are reported with concussions, a major public health concern, with approximately 3.8 million incidences occurring annually in the United States alone. Recent studies have identified an increased risk of musculoskeletal injuries in athletes upon return-to-play. Complexity index is a sensitive marker of postural control, with low complexity index indicating a poor physiological adaptation to stress. PURPOSE: Twofold; 1. Examine complexity index and dynamic cerebral autoregulation (dCA) at rest and during physical stress (rhythmic squatting) in collegiate athletes following a concussion in comparison to non-injured controls. 2. Examine the association between complexity …
