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No Influence Of Ovarian Hormones On Cerebrovascular Responses To The Valsalva Maneuver, Jesus I. Lara (Undergraduate), Gilbert Moralez, Chelsea R. Barrera, Ashley Martinez, William H. Cooke 2010 University of Texas at San Antonio

No Influence Of Ovarian Hormones On Cerebrovascular Responses To The Valsalva Maneuver, Jesus I. Lara (Undergraduate), Gilbert Moralez, Chelsea R. Barrera, Ashley Martinez, William H. Cooke

International Journal of Exercise Science: Conference Proceedings

Cerebral blood flow is modulated in part by arterial perfusion pressure and autonomic neural activity. Valsalva straining drives increases in cerebral perfusion pressure that may challenge cerebrovascular regulatory mechanisms. These challenges may be even greater during the normal menstrual cycle due to vasoactive influences of ovarian hormones. PURPOSE: To test the hypothesis that cerebral vascular responses to Valsalva straining are enhanced with increased plasma concentrations of estrogen and progesterone. METHODS: Twelve healthy eumenorrheic females (mean age 25 ± 1 yr; height 165 ± 3 cm; weight 66 ± 2 kg; mean ± SE) were studied during the early and late follicular (EF and LF ...


Effects Of Chocolate Milk Supplementation On Recovery From Cycling Exercise And Subsequent Time Trial Performance, Lisa Ferguson-Stegall, Erin McCleave, Phillip G. Doerner III, Zhenping Ding, Benjamin Dessard, Lynne Kammer, Bei Wang, Yang Liu, John L. Ivy 2010 University of Texas at Austin

Effects Of Chocolate Milk Supplementation On Recovery From Cycling Exercise And Subsequent Time Trial Performance, Lisa Ferguson-Stegall, Erin Mccleave, Phillip G. Doerner Iii, Zhenping Ding, Benjamin Dessard, Lynne Kammer, Bei Wang, Yang Liu, John L. Ivy

International Journal of Exercise Science: Conference Proceedings

PURPOSE: Supplementing with carbohydrate plus protein following strenuous endurance exercise has been found to improve both recovery and subsequent aerobic endurance performance beyond that of a carbohydrate supplement alone. The purpose of the present study was to compare the effects of chocolate milk (CM), an isocaloric carbohydrate only supplement (CHO), and placebo (PLA) on markers of endurance exercise recovery and subsequent time trial performance in trained cyclists. METHODS: Ten trained male and female cyclists (5 males, 5 females) performed 3 trials in which they first cycled for 1.5 h at 70% of VO2max, followed by 10 min of intervals ...


The Effects Of Pre- And Post-Exercise Whey Vs. Casein Protein Consumption On Body Composition And Performance Measures In Collegiate Female Athletes, Kristin M. Dugan, Mallory McAdams, Morgan Lewing, Cliffa Foster, Colin Wilborn, Lemuel W. Taylor IV 2010 University of Mary Hardin - Baylor

The Effects Of Pre- And Post-Exercise Whey Vs. Casein Protein Consumption On Body Composition And Performance Measures In Collegiate Female Athletes, Kristin M. Dugan, Mallory Mcadams, Morgan Lewing, Cliffa Foster, Colin Wilborn, Lemuel W. Taylor Iv

International Journal of Exercise Science: Conference Proceedings

Two of the most popular forms of protein on the market are whey and casein. Both proteins are derived from milk however the two differ concerning their absorption in the body. This difference between whey and casein proteins could affect the response seen in conjunction with training. PURPOSE: To investigate the potential effects of two types of protein ingestion in conjunction with a controlled resistance training program utilizing college female basketball players. METHODS: 16 NCAA Division III female basketball players were matched according to weight and double-blind randomly assigned to consume 24 grams whey protein (WP) (N = 8, 20 ± 1 ...


Thermographic Imaging To Detect Reductions Of Central Volume Induced By Simulated Hemorrhage, Ashley Martinez (Undergraduate Student), Gilbert Moralez, Chelsea R. Barrera, Jesus Lara, William H. Cooke (Ph.D) 2010 University of Texas at San Antonio

Thermographic Imaging To Detect Reductions Of Central Volume Induced By Simulated Hemorrhage, Ashley Martinez (Undergraduate Student), Gilbert Moralez, Chelsea R. Barrera, Jesus Lara, William H. Cooke (Ph.D)

International Journal of Exercise Science: Conference Proceedings

Hemorrhage is the leading cause of death on the battlefield, but the magnitude of blood loss can be difficult to determine. Therefore, medics would benefit from advanced tools to detect blood loss. As skin temperature likely decreases with peripheral vasoconstriction, a portable thermographic imaging (TI) device capable of measuring skin temperature may assist in the detection hemorrhage. PURPOSE: To determine whether skin temperature measured with TI track stroke volume reductions during simulated hemorrhage. METHODS: We studied fifteen healthy volunteers (7 female and 8 male; 24±1 yrs; 171±3 cm; 69±3 kg). ECG, beat-by-beat finger arterial pressure (Finometer), respiratory ...


Low Intensity Of Running Favors For Anabolic Response After Resistance Exercise, Chun-Chung Chou, Siang-Sheng Wu, De-Shang Chen, Jung-Charng Lin 2010 Chinese Culture University

Low Intensity Of Running Favors For Anabolic Response After Resistance Exercise, Chun-Chung Chou, Siang-Sheng Wu, De-Shang Chen, Jung-Charng Lin

International Journal of Exercise Science: Conference Proceedings

Purpose: Whether active or passive recovery after resistance exercise may affect anabolic and catabolic response is not clear. The aim of this study was to examine the effect of active (moderate or low intensity running) and passive (rest) recovery after resistance exercise on testosterone, cortisol and testosterone/cortisol ratio (T/C) responses. Methods: By counter-balanced design, nine recreationally active males (age: 23.89 ± 0.86 yrs of age; height: 172.89 ± 1.30 cm; weight: 68.37 ± 2.72 kg; VO2max: 56.56 ± 1.70 ml/kg/min) completed three tests including: 65% VO2max running (moderate intensity, RM), 40% VO2max ...


Locomotive Biomechanics Wearing A Simulated Portable Life Support System During Varying Cognitive And Treadmill Grade Conditions, Brittany K. Sanchez, William E. Amonette 2010 University of Houston - Clear Lake

Locomotive Biomechanics Wearing A Simulated Portable Life Support System During Varying Cognitive And Treadmill Grade Conditions, Brittany K. Sanchez, William E. Amonette

International Journal of Exercise Science: Conference Proceedings

Background: The Portable Life Support System (PLSS) worn by astronauts during Extravehicular Activity (EVA) is contained within a backpack. Due to the inherent mass of the PLSS, astronaut center of mass (COM) is altered during ambulation. Recent studies from our laboratory suggest shifts in the COM of the PLSS have minimal effects on exercising metabolism, although differences were observed in trunk angles during ambulation. During EVA, astronauts continuously perform cognitive tasks (CG). Due to the distractive nature of these tasks, safety may be compromised by altered biomechanics. Purpose: To quantify lower extremity kinematics while walking with a simulated PLSS at ...


Effect Of A Low Carbohydrate-Moderate Protein Supplement On Endurance Performance In Female Athletes, Erin L. McCleave, Lisa Ferguson-Stegall, Zhenping Ding, Phillip Doerner, Bei Wang, Lynne Kammer, John L. Ivy 2010 University of Texas at Austin

Effect Of A Low Carbohydrate-Moderate Protein Supplement On Endurance Performance In Female Athletes, Erin L. Mccleave, Lisa Ferguson-Stegall, Zhenping Ding, Phillip Doerner, Bei Wang, Lynne Kammer, John L. Ivy

International Journal of Exercise Science: Conference Proceedings

Previous research has shown that consuming a carbohydrate supplement during prolonged endurance exercise improves performance compared to water or placebo. The addition of protein to traditional carbohydrate supplement has been shown to further improve perfomance beyond that of carbohydrate alone. However, few investigations have explored the effect of adding protein to a supplement containing a low carbohydrate concentration. PURPOSE: To investigate if a low carbohydrate and moderate protein supplement, provided during prolonged variable intensity exercise, would improve time to exhaustion in comparison to a traditional carbohydrate supplement. METHODS: Fourteen (n = 14) trained females cyclists and triathletes (30.4 ±1.6 ...


Speed And Agility Prediction Models In High School Football Players, James J. Tufano, William E. Amonette, A. Eugene Coleman, Terry L. Dupler, Troy Wenzel 2010 University of Houston - Clear Lake

Speed And Agility Prediction Models In High School Football Players, James J. Tufano, William E. Amonette, A. Eugene Coleman, Terry L. Dupler, Troy Wenzel

International Journal of Exercise Science: Conference Proceedings

Background: Optimal relationships between speed, agility, power and body mass are essential in American football. An increase in body mass, theoretically, reduces acceleration (Newton’s 2nd Law). However, an increase in lean body mass may enhance overall force or power generating potential and momentum of an athlete. Body mass, height, and vertical jump height are routinely measured, easily obtainable, and may be used as predictors of speed and agility. Purpose: To determine associations between height, vertical jump height, and body mass to speed and agility in high school football players. Methods: Data were collected on 1261 male football players (16 ...


The Effect Of A Caffeine Energy Drink On Cardiovascular Responses During Intense Exercise, Joe Sillivent, Kim Coffman, Jennifer Blevins-McNaughton 2010 Tarleton State University

The Effect Of A Caffeine Energy Drink On Cardiovascular Responses During Intense Exercise, Joe Sillivent, Kim Coffman, Jennifer Blevins-Mcnaughton

International Journal of Exercise Science: Conference Proceedings

Background and Purpose: Despite the growing popularity of energy drinks, many do not realize the negative effects on the cardiovascular system. Little research has investigated the electrocardiographic effects of energy drinks. The purpose of this study was to examine the effects of energy drink ingestion on the cardiovascular system at rest and during exercise. Methods: Seven healthy adults (24.3 ± 3.5 yrs; wt = 66.0 ± 2.2 kg) participated in this double blind study. Subjects ingested a placebo (PL) or Redline (RL) energy drink (240ml; 316 mg caffeine) 40 minutes before maximal graded exercise test (GXT). Subjects were asked ...


Concurrent Resistance And Aquatic Treadmill Training Elicits Greater Lean Mass Gains Than Resistance Training Alone., Brad S. Lambert, Nicholas P. Greene, Green S. John (FACSM), Stephen F. Crouse (FACSM) 2010 Texas A & M University - College Station

Concurrent Resistance And Aquatic Treadmill Training Elicits Greater Lean Mass Gains Than Resistance Training Alone., Brad S. Lambert, Nicholas P. Greene, Green S. John (Facsm), Stephen F. Crouse (Facsm)

International Journal of Exercise Science: Conference Proceedings

PURPOSE: To examine the effects of combined aquatic treadmill training (ATM) and resistance training (RT) on body composition (Bcomp), strength, and VO2max following 12 wks of training compared to RT alone. METHODS: 5 healthy, sedentary men (32.6yr ±11, 187.5 cm ±4.9, 107.9 kg ±19.5) and 6 women (34.2 yrs ±14.3, 166.6 cm ±8.4, 78.6 kg ±19.69) were recruited and screened to assess VO2max (GXT), Bcomp (DEXA), and strength. During strength assessment, 1RMs were assessed in this order: leg press, chest press, leg curl, lat pull, leg ext, triceps push-down ...


The Influence Of Different Length Between Match Microcycles On Neuromuscular, Hormonal And Perceptual Responses In Professional Rugby League Players, Blake D. McLean, Aaron J. Coutts, Vince Kelly, Michael R. McGuigan, Stuart Cormack 2010 University of Texas at Austin

The Influence Of Different Length Between Match Microcycles On Neuromuscular, Hormonal And Perceptual Responses In Professional Rugby League Players, Blake D. Mclean, Aaron J. Coutts, Vince Kelly, Michael R. Mcguigan, Stuart Cormack

International Journal of Exercise Science: Conference Proceedings

Optimal recovery between matches is critically important in team sports. Indeed, altered neuromuscular performance, hormone levels and increased fatigue can manifest in under recovered team sport athletes. However, the recovery patterns in these variables in the days following professional rugby league matches is unknown. The purpose of this study was to examine the influence of different between-match training periods on neuromuscular, hormonal and perceptual measures in professional rugby league players. Following familiarization, 12 professional rugby league players from the same team were assessed for changes in countermovement jump (CMJ) (force, power, flight time), perceptual responses (fatigue, well being and muscle ...


Association Of Aerobic Fitness And Metabolic Syndrome In Male Firefighters, Cara Kirby, Steven E. Martin, Brad S. Lambert, Nic P. Greene, John S. Green, Stephen F. Crouse 2010 Texas A & M University - College Station

Association Of Aerobic Fitness And Metabolic Syndrome In Male Firefighters, Cara Kirby, Steven E. Martin, Brad S. Lambert, Nic P. Greene, John S. Green, Stephen F. Crouse

International Journal of Exercise Science: Conference Proceedings

Metabolic syndrome has been shown in numerous studies to be related to a higher incidence of coronary artery disease. A study by Jurca and coworkers (Med. Sci. Sports Exerc 36(8):1301-1307, 2004) found a relationship between aerobic fitness and the prevalence of metabolic syndrome in a group of men enrolled in the Aerobics Center Longitudinal Study (ACLS). In addition, recent work in our lab (Int J Exerc Sci 2(1): S43, 2009) has supported these findings. However, research exploring this relationship is still lacking in male firefighters, whose leading cause of line-of-duty deaths is heart attacks. Purpose: To further ...


The Relationship Of Metabolic Syndrome And Aerobic Exercise In Adult Male Fire Fighters, Kady E. Allender, Steven E. Martin, Nic P. Greene, Brad S. Lambert, John S. Green, Stephen F. Crouse 2010 Texas A & M University - College Station

The Relationship Of Metabolic Syndrome And Aerobic Exercise In Adult Male Fire Fighters, Kady E. Allender, Steven E. Martin, Nic P. Greene, Brad S. Lambert, John S. Green, Stephen F. Crouse

International Journal of Exercise Science: Conference Proceedings

Previous studies have concluded that incidence of Metabolic Syndrome may be greater in male firefighters than in the US male population. A recent study reported that approximately 31% of firefighters were positive for Metabolic Syndrome; compared to 24% for the U.S. male population (NCEPIII). Participation in aerobic exercise may decrease the risk of Metabolic Syndrome as cardiac risk factors are improved. This study aims to determine the effect of aerobic exercise participation on the prevalence of metabolic syndrome in a sample of male firefighters. Purpose: To examine the effect of aerobic exercise participation on the prevalence of Metabolic Syndrome ...


The Effects Of Endurance Training And Short-Term High Intensity Sprint Training On Performance And Endurance Related Variables In Well-Trained Endurance Cyclists, Jessica L. Goulder, Marissa G. Spitz, Kara N. Weaver, Kelyn S. Rola, Joel B. Mitchell 2010 Texas Christian University

The Effects Of Endurance Training And Short-Term High Intensity Sprint Training On Performance And Endurance Related Variables In Well-Trained Endurance Cyclists, Jessica L. Goulder, Marissa G. Spitz, Kara N. Weaver, Kelyn S. Rola, Joel B. Mitchell

International Journal of Exercise Science: Conference Proceedings

Background: Recent research has suggested supramaximal training can be an effective means of improving endurance performance; however ultra high intensity training (UHIT) has not been examined as a replacement of training volume in a well-trained endurance population. Overuse-related injuries, recurring illness, feelings of staleness, and overtraining that are often associated with high volume training may be avoided with low volume, UHIT training. Purpose: The purpose of this study was to compare the effects of two weeks of low volume UHIT with two weeks of traditional HV endurance training on lactate threshold (LT), VO2max, steady state efficiency, substrate utilization rates, and ...


Relationship Between Leisure-Time Physical Activity And Whole Body Bone Mineral Density, Human Growth Hormone, And Leptin In Women, Benjamin A. Ramirez, George A. King 2010 University of Texas at El Paso

Relationship Between Leisure-Time Physical Activity And Whole Body Bone Mineral Density, Human Growth Hormone, And Leptin In Women, Benjamin A. Ramirez, George A. King

International Journal of Exercise Science: Conference Proceedings

The benefits of structured exercise on bone health have been well documented. However, less understood is the influence of leisure-time physical activity (LA) on BMD. PURPOSE: The purpose of this study was to examine the relationships between LA, whole body BMD, and serum levels of human growth hormone (HGH) and leptin. METHODS: One hundred two apparently healthy, premenopausal women (Mean ± SD Age: 43.1 ± 4.5 y; BMI: 26.5 ± 5.2 kg/m2; body fat: 41.6 ± 7.9 %) participated in the study. Self-reported leisure-time physical activity was quantified as total minutes of moderate to vigorous activity and then ...


A Comparison Of Adaptations Via Either A Linear Periodization Or An Undulating Periodization Model Of Weight Training, Morgan Lewing, Colin Wilborn, Lemuel W. Taylor IV 2010 University of Mary Hardin-Baylor

A Comparison Of Adaptations Via Either A Linear Periodization Or An Undulating Periodization Model Of Weight Training, Morgan Lewing, Colin Wilborn, Lemuel W. Taylor Iv

International Journal of Exercise Science: Conference Proceedings

BACKGROUND: Resistance training has been proven to have a positive impact on parameters such as muscular strength, hypertrophy and endurance. Periodization is a progressive mode of training that has been shown to illicit greater results than programs that stay consistent throughout. The two prime modes of periodization are linear (LP), which progresses from high volume/low intensity to low volume/high intensity, and undulating (UP) which follows an oscillating volume/intensity design. The purpose of this study was to compare the effects of a 12 week linear program to those from an undulating program on strength and body composition when ...


Partial Weightbearing At 1/6 And 1/3 G Does Not Prevent Deleterious Changes In Bone Observed With Traditional Tail Suspension (0 G), Sarah Luna, Josh Swift, Yasaman Shirazi-Fard, M Lucas, Florence Lima, Liz Greene, Harry Hogan, Susan Bloomfield 2010 Texas A&M University

Partial Weightbearing At 1/6 And 1/3 G Does Not Prevent Deleterious Changes In Bone Observed With Traditional Tail Suspension (0 G), Sarah Luna, Josh Swift, Yasaman Shirazi-Fard, M Lucas, Florence Lima, Liz Greene, Harry Hogan, Susan Bloomfield

International Journal of Exercise Science: Conference Proceedings

The effect of partial gravity (G) (as on the Lunar surface) on weight bearing bone remains undefined; a new model (the partial G mouse) provides for graded reductions in weight bearing. We hypothesized that mice exposed to 1/6th G and 1/3rd G (to mimic Lunar weightbearing with full spacesuit) will experience significant reductions in cortical and cancellous bone mass as compared to ambulatory control animals but that the magnitude of these changes would be less than in 0 G mice. Methods: Fifty-eight BALB/cBy female mice were randomly assigned to cage control (1G), “zero-gravity” hindlimb unloaded (0G), 1 ...


Identifying Central Patterns Of Motor Control In Pathological Gait, John S. Ward 2010 University of Houston - Main

Identifying Central Patterns Of Motor Control In Pathological Gait, John S. Ward

International Journal of Exercise Science: Conference Proceedings

Introduction: The central pattern generator (CPG) for walking is an open loop system that drives lower limb movements in a relatively rhythmic fashion once motion has started with minimal need for additional afferent input. The role of the CPG in the pathological gait of Incomplete Spinal Cord Injury (ISCI) and Parkinson’s Disease (PD) has not been studied thoroughly. Understanding how the CPG contributes to motor control in these special populations will serve as a standard upon which to compare new treatments to improve gait function. The purpose of this study was to identify the expression of CPG patterns in ...


The Impact Of Latent Herpesvirus Infections On The Mobilization Of Recent Thymic Emigrants And Extrathymic T-Cells In Response To Acute Aerobic Exercise In Man, Jerrald L. Rector, Guillaume Spielmann, Austin J. Bigley, Richard J. Simpson 2010 University of Houston - Main

The Impact Of Latent Herpesvirus Infections On The Mobilization Of Recent Thymic Emigrants And Extrathymic T-Cells In Response To Acute Aerobic Exercise In Man, Jerrald L. Rector, Guillaume Spielmann, Austin J. Bigley, Richard J. Simpson

International Journal of Exercise Science: Conference Proceedings

T-cells typically mature in the thymus gland, which eventually succumbs to age-related atrophy, resulting in a decreased naïve T-cell repertoire in middle to later years. Aged individuals and those with persistently reactivating herpesvirus infections have an increased reliance on the extrathymic maturation of T-cells due to the shrinking effects that age and latent viral infection has on the naïve T-cell repertoire. Acute bouts of aerobic exercise are known to mobilize T-cells that exhibit both a naïve and late-stage differentiation phenotype into the blood compartment; however, it is not known if recent thymic emigrants (RTE) or extrathymic T-cells contribute to the ...


The Impact Of Latent Cmv Infection On Nk-Cell Mobilization And Expression Of Klrg1 And Cd57 In Response To Acute Exercise., Austin B. Bigley, Guillaume Spielmann, Jerrald L. Rector, Richard J. Simpson 2010 Laboratory of Integrated Physiology; University of Houston

The Impact Of Latent Cmv Infection On Nk-Cell Mobilization And Expression Of Klrg1 And Cd57 In Response To Acute Exercise., Austin B. Bigley, Guillaume Spielmann, Jerrald L. Rector, Richard J. Simpson

International Journal of Exercise Science: Conference Proceedings

Natural killer (NK) cells are cytotoxic effectors of the innate immune system that are able to distinguish healthy autologous cells from tumors and virally infected cells. NK-cells kill the targeted cells by releasing cytotoxic proteins, a process that is governed by inhibitory surface receptors, such as KLRG1. Additionally, activated NK-cells are able to proliferate in response to immunological stimuli, a process that is inhibited in NK-cells expressing the senescence marker CD57. Acute bouts of exercise are known to mobilize NK cells into the blood compartment, which could alter immunity; however, whether or not exercise alters NK-cell KLRG1 and CD57 expression ...


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