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2020

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Articles 361 - 390 of 471

Full-Text Articles in Health and Physical Education

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 Feb 2020

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 …

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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 Feb 2020

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 …

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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 Feb 2020

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 …

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Acute Effect Of Hyperglycemia On The Mechanoreflex And Metaboreflex, Yu Huo, Ann-Katrin Grotle, Michelle L. Harrison, Audrey J. Stone Feb 2020

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 …

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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 Feb 2020

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 …

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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 Feb 2020

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 …

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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 Feb 2020

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 …

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Improved Glucose Tolerance And Glucose Utilization With Neuromuscular Electrical Stimulation, Michael J. Sanchez, Michelle Galvan, Dante Nacim, Sudip Bajpeyi Feb 2020

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 …

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Sex Differences In Power Output At Maximal Load During The Barbell Squat, Lyndsey T. Mccallister Feb 2020

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 …

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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 Feb 2020

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 …

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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 Feb 2020

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 …

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Water Immersion Skin Wrinkling: The Influence Of Age, Sex, And Adiposity, Jonathon Kava, Daroonwan Suksom, Hirofumi Tanaka Feb 2020

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 …

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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 Feb 2020

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 …

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A Practical And Easier Measure Of Endothelial Function Applicable To The Routine Clinical Setting?, Melanie Heath, Drew Gourley, Morteza Naghavi, Stanley Kleis, Hirofumi Tanaka Feb 2020

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 …

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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 Feb 2020

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) …

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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 Feb 2020

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 …

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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 Feb 2020

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 …

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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 Feb 2020

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 …

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Exaggerated Pulsatility During Exercise Is Associated With Reduced Muscle Strength And Quality In Elderly Hypertensives, Stephen M. Fischer, Arun Maharaj, Arturo Figueroa Feb 2020

Exaggerated Pulsatility During Exercise Is Associated With Reduced Muscle Strength And Quality In Elderly Hypertensives, Stephen M. Fischer, Arun Maharaj, Arturo Figueroa

International Journal of Exercise Science: Conference Proceedings

It is well-established that hypertensive individuals have an exaggerated systolic blood pressure in response to exercise. Leg muscle weakness is related to greater left ventricular (LV) mass in hypertensive individuals via exaggerated increases in blood pressure during aerobic exercise. Pulse pressure (PP) is an indicator of LV pulsatile hemodynamic load. Increased PP is associated with LV hypertrophy and dysfunction in older adults. PURPOSE: To determine differences in PP responses to resistance exercise in normotensive versus hypertensive older adults and the influence of lean mass and strength on these responses. METHODS: Nine normotensive (NTN) and 11 hypertensive (HTN) older adults (NTN …

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Effects Of Using Wedged-Weightlifting Shoes While Performing A Front Squat, Brielle Adolph, Scott P. Mclean Feb 2020

Effects Of Using Wedged-Weightlifting Shoes While Performing A Front Squat, Brielle Adolph, Scott P. Mclean

International Journal of Exercise Science: Conference Proceedings

Wedged-weightlifting shoes may contribute to a better squatting postural technique by allowing for an increase in ankle dorsiflexion, an increase in hip flexion, and a decrease in the amount of trunk lean. Purpose: To examine how wedged-weightlifting shoes affect peak power output, trunk lean, hip flexion, and ankle dorsiflexion during the performance of a front-squat. Methods: Six participants (167.875±20.13 lbs., 20.67±1.51 yrs.) completed five-repetition squatting trials while standing on a Bertec force plate. Force data were collected at 100 Hz using the Biopac Acknowledge system during these trials. Simultaneously, the trials were video recorded at 50 Hz in the sagittal …

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Effects Of Community-Based Exercise Training Among Older Individuals With Metabolic Disease, Cardiovascular Disease, Or Muscle Atrophy, Stacie B. Black, Nikhat Jharia, Binal Dholariya, Seth George, Anne Anders, Kirk L. English, Julianna M. Dean, William E. Amonette Feb 2020

Effects Of Community-Based Exercise Training Among Older Individuals With Metabolic Disease, Cardiovascular Disease, Or Muscle Atrophy, Stacie B. Black, Nikhat Jharia, Binal Dholariya, Seth George, Anne Anders, Kirk L. English, Julianna M. Dean, William E. Amonette

International Journal of Exercise Science: Conference Proceedings

Exercise training is associated with increased health benefits such as improved quality of life, mental health, and physical functioning. PURPOSE: The purpose of this study is to quantify the effects of structured aerobic and resistance exercise training on body composition, functional tests, and quality of life in older individuals in a community-based facility. We hypothesized that at least moderate participation in the program would decrease fat mass, improve outcomes on grip and timed movement tests, and increase quality of life. METHODS: Twenty subjects who were members from a community-based institute participated in the study (7M:13F; 69.10 ± 6.40 …

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The Metabolic Cost Of Pushing Versus Carrying A Golfbag, Leilani Mcdaniel, Edward Merritt, Scott P. Mclean Feb 2020

The Metabolic Cost Of Pushing Versus Carrying A Golfbag, Leilani Mcdaniel, Edward Merritt, Scott P. Mclean

International Journal of Exercise Science: Conference Proceedings

The two most common non-motorized methods for transporting golf clubs in recreational and amateur golf are carrying a double strap bag or pushing a wheeled cart. The transportation method of golf clubs can have a direct impact on the necessary metabolic, musculoskeletal and cardiorespiratory requirements of golf performance. PURPOSE: To compare the metabolic cost of pushing versus carrying a golf bag. METHODS: Twenty two participants (18 Male, 3 Female, 24.2±8.9 yrs, 176.6±14.5 cm, and 76.2±14.5 kg) were recruited for one session in which they walked one mile while carrying and one mile while pushing a 25lb golf bag (determined as …

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Influence Of Subject Presentation On Body Composition Estimates From Dual-Energy X-Ray Absorptiometry, Air Displacement Plethysmography, And Bioelectrical Impedance Analysis, Patrick S. Harty, Matthew T. Stratton, Baylor A. Johnson, Jacob R. Dellinger, Marqui L. Benavides, Robert W. Smith, Sarah J. White, Abegale D. Williams, Christian Rodriguez, Grant M. Tinsley Feb 2020

Influence Of Subject Presentation On Body Composition Estimates From Dual-Energy X-Ray Absorptiometry, Air Displacement Plethysmography, And Bioelectrical Impedance Analysis, Patrick S. Harty, Matthew T. Stratton, Baylor A. Johnson, Jacob R. Dellinger, Marqui L. Benavides, Robert W. Smith, Sarah J. White, Abegale D. Williams, Christian Rodriguez, Grant M. Tinsley

International Journal of Exercise Science: Conference Proceedings

Body composition assessment devices are commonly employed to track changes associated with exercise or nutritional interventions. However, many individuals undergo body composition assessments with little to no pre-testing standardization of dietary intake or physical activity, potentially introducing error into their results. PURPOSE: To examine the validity of unstandardized body composition assessments relative to standardized assessments using three common body composition assessment devices. METHODS: Twenty-three resistance-trained males (Mean ± SD; 21.6 ± 2.6 years; 71.3 ± 6.8 kg; 177.4 ± 5.9 cm; 17.4 ± 4.1% DXA-derived percent body fat [%BF]) underwent paired body composition assessments via dual-energy x-ray absorptiometry …

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A Comparison Of The Effects Of Moderate-Intensity Continuous Cycling And High-Intensity Interval Cycling On Postprandial Lipemia And Glycemia, Autumn Oliver, David J. Buckley, James R. Rowe Jr Feb 2020

A Comparison Of The Effects Of Moderate-Intensity Continuous Cycling And High-Intensity Interval Cycling On Postprandial Lipemia And Glycemia, Autumn Oliver, David J. Buckley, James R. Rowe Jr

International Journal of Exercise Science: Conference Proceedings

Both moderate-intensity continuous exercise (MICE) and high-intensity interval exercise (HIIE) has been reported to reduce the magnitude of postprandial lipemia and glycemia. It is unclear if performing MICE or HIIE of similar duration and work would have a comparable effect on postprandial lipemia or glycemia. PURPOSE: Examine the postprandial lipemic and glycemic response following the completion of high-intensity interval cycling (HIIC) and moderate-intensity continuous cycling (MICC) that is of equal duration and comparable work output. METHODS: Participants were mildly active males (n = 12; age = 21.9 ± 1.8 yrs; body mass = 90.1 ± 16.8 kg; BF% = …

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Cerebrovascular Dysfunction Is Related To Depressive Symptom Severity In Young Adults, Rauchelle E. Richey, John Akins, Jeremiah C. Campbell, Erika F.H. Saunders, R Matthew Brothers, Jody L. Greaney Feb 2020

Cerebrovascular Dysfunction Is Related To Depressive Symptom Severity In Young Adults, Rauchelle E. Richey, John Akins, Jeremiah C. Campbell, Erika F.H. Saunders, R Matthew Brothers, Jody L. Greaney

International Journal of Exercise Science: Conference Proceedings

Cerebral vasodilatory responsiveness is blunted in older adults (~70 yrs) with depressive disorders and is thought to contribute to the link between depressive symptomology and increased risk for neurocognitive (e.g., dementia) and cerebral vascular (e.g., stroke) diseases. In young adults with major depressive disorder (MDD), peripheral vascular endothelial dysfunction is present and graded in relation to the severity of depressive symptoms; however, to date, limited investigations have examined cerebral vasodilatory function in young otherwise healthy adults with MDD. PURPOSE: We tested the hypothesis that cerebral vasodilatory responsiveness to a hypercapnic stimulus would be blunted in young otherwise healthy adults …

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Wearable Positive End-Expiratory Pressure Valve Improves Exercise Performance, Alexandra L. Remy, Jason R. Lytle, Sean Boutros, William Benton, Michael Moreno, Patrick Mcculloch, Brad S. Lambert, Stephen F. Crouse Feb 2020

Wearable Positive End-Expiratory Pressure Valve Improves Exercise Performance, Alexandra L. Remy, Jason R. Lytle, Sean Boutros, William Benton, Michael Moreno, Patrick Mcculloch, Brad S. Lambert, Stephen F. Crouse

International Journal of Exercise Science: Conference Proceedings

Positive end-expiratory pressure (PEEP) provides benefits to pulmonary patients, yet effects in healthy, exercising adults are unknown. PURPOSE: We designed two experiments (EXP) to test a novel PEEP (4.2 cmH2O PEEP) mouthpiece (PMP) on maximal cycling performance of physically active volunteers. METHODS: EXP-1 PMP vs. control (CON) mouthpiece (N=9, Age=30±2 yr, Weight=72.2±3.7 kg, BMI=24.4±1.2, 5♂); and EXP-2 PMP vs. no mouthpiece (NMP) (N=10, Age=27±1 yr, Weight=76.7±3.6 kg, BMI=23.9±0.8, ♂). Exercise test procedures for both experiments were identical. On Day 1, under the first mouthpiece condition assigned at random subjects performed graded exercise cycling testing (GXT) (Corival …

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Comparison Of The Effects Of Two Different Resistance Training Programs On Strength In Older Males., Ricardo Parra, Murat Karabulut Feb 2020

Comparison Of The Effects Of Two Different Resistance Training Programs On Strength In Older Males., Ricardo Parra, Murat Karabulut

International Journal of Exercise Science: Conference Proceedings

Age-related decrement in skeletal muscle strength can be attenuated by resistance training. Blood-flow restriction training has shown promising results when working with lighter loads, mimicking the response to resistance training at moderate-to-high- intensities. PURPOSE: The purpose of this study was to compare the effects of 8 weeks of blood flow restriction (BFR) training and traditional endurance resistance training on isotonic, isokinetic, isometric strength in older males. METHODS: A total of 17 males (57.0 yr ± 4.6 yr) completed the study. Subjects were randomly assigned to two training groups: blood flow restriction (BFR; n= 9) or endurance resistance training (END; n …

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The Relation Between Cognitive Function And Cerebral Vasodilatory Reactivity In Young Adults With Major Depressive Disorder, Salwa Shoaib, Rauchelle E. Richey, Sherri M. Pham, John D. Akins, Dahlia Mukherjee, Erika F.H. Saunders, R Matthew Brothers, Jody L. Greaney Feb 2020

The Relation Between Cognitive Function And Cerebral Vasodilatory Reactivity In Young Adults With Major Depressive Disorder, Salwa Shoaib, Rauchelle E. Richey, Sherri M. Pham, John D. Akins, Dahlia Mukherjee, Erika F.H. Saunders, R Matthew Brothers, Jody L. Greaney

International Journal of Exercise Science: Conference Proceedings

Major depressive disorder (MDD) has been associated with an elevated risk of developing neurocognitive diseases (e.g., dementia). Although the precise neurobiological mechanisms remain incompletely understood, cerebrovascular dysfunction is thought to directly contribute, at least in part, to impairments in cognitive function. Cerebral vasodilatory reactivity to a hypercapnic stimulus is blunted in older adults with MDD compared to age-matched non-depressed adults. Further, impaired cerebral vasodilation has been linked to reduced cognitive activity in older adults with depression. However, to date, limited studies have examined the relation between cognitive function and cerebrovascular function in otherwise healthy young adults with MDD. PURPOSE: …

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Heart Rate Variability Responses To Exercise In Mid-Spectrum Chronic Kidney Disease, Matthew Peterson, Jeffrey S. Forsse, Zacharias Papadakis, Peter Grandjean Feb 2020

Heart Rate Variability Responses To Exercise In Mid-Spectrum Chronic Kidney Disease, Matthew Peterson, Jeffrey S. Forsse, Zacharias Papadakis, Peter Grandjean

International Journal of Exercise Science: Conference Proceedings

Heart rate variability (HRV) is a measure of autonomic nervous system (ANS) activity, and decreased HRV is associated with many cardiovascular conditions. Chronic kidney disease (CKD) is characterized by a decrease in renal function and may be associated with ANS imbalances in the renal vasculature. Low HRV is associated with CKD incidence. Exercise is able to alter HRV by modulating the ANS. The effect of exercise on HRV in mid-spectrum CKD patients remains understudied. PURPOSE: To determine the effect of steady-state exercise (SSE) and high-intensity interval exercise (HIIE) on post-exercise HRV in patients with stage 3 or 4 CKD. …

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Attempting To Acutely Manipulate Ground Contact Time Imbalances Impairs Running Economy, Broderick L. Dickerson, Eric J. Jones, Dani D. Willis, Dustin P. Joubert Feb 2020

Attempting To Acutely Manipulate Ground Contact Time Imbalances Impairs Running Economy, Broderick L. Dickerson, Eric J. Jones, Dani D. Willis, Dustin P. Joubert

International Journal of Exercise Science: Conference Proceedings

Running economy (RE) is a key performance determinant. Biomechanical markers have been linked to RE, including ground contact time (GCT), cadence, and vertical oscillation (VO). Recently, we showed a strong relationship between GCT imbalances and RE. Because these markers can be tracked real-time with consumer-wearable devices, runners now have access to instant feedback concerning their mechanics. PURPOSE: Determine if attempting to correct GCT imbalances real-time alters mechanics and RE. METHODS: 7 recreational runners (38 ± 15 years, 24.7 ± 2.8 kg/m2, 5 male) completed 2, 10-minute running trials (9.65 km/hr) on separate days. For both trials, subjects ran …

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