Kinesiology Commons^™

Analyzing Performance Of Skilled And Unskilled Jump Ropers During A Two-Footed Jumping Task, Briana N. Felix, Scott P. Mclean, Jimmy Smith

International Journal of Exercise Science: Conference Proceedings

The purpose of this study was to determine if reduced tibial acceleration characterized skilled rope-skipping performance for a two-footed jumping task and to examine if the style of rope used had an effect on performance. Following a 3-minute treadmill warm-up, fifteen volunteers from Southwestern University (8 women and 7 men; 20.6 ± 0.91 years; 168.5 ± 8.9 cm, 68.3 ± 9.9 kg) completed three one-minute trials of two-footed jump roping. Each trial was performed with one of three different jump ropes of varying material and mass (0.10 kg plastic rope, 0.14 kg cable rope, 0.17kg beaded rope). The ropes selected …

Adrenergic Control Of The Cutaneous Circulation During Cryotherapy, Kevin M. Christmas

International Journal of Exercise Science: Conference Proceedings

Cryotherapy application is a widely clinically used therapeutic technique using ice or cold water applied to the skin surface to reduce local blood flow. While beneficial, cryotherapy treatment does have the potential to induce some detrimental physiological side effects. For example, cryotherapy treatment induces pronounced tissue ischemia that is sustained for hours even during a post-treatment rewarming period. PURPOSE: To investigate the role of adrenergic receptor activation on cutaneous blood flow during 30 min of cryotherapy as well as during the subsequent 1 hr of passive rewarming. We hypothesized that adrenergic-mediated vasoconstriction is involved in pronounced and sustained cutaneous vasoconstriction …

Resting And Post-Exercise Blood Pressure Response To Repeated Bouts Of Aquatic Treadmill Exercise, Dustin P. Joubert, Jorge Z. Granados, Stephen F. Crouse

International Journal of Exercise Science: Conference Proceedings

Aerobic exercise is known to reduce resting blood pressure as well as induce and acute post-exercise hypotensive response. Purpose: Determine the effect of repeated bouts of aquatic treadmill exercise on consecutive days in physically untrained, pre-hypertensive men. Methods: Nine male subjects (SBP: 132 ± 8 mmHg; DBP: 79 ± 8 mmHG; 33 ± 8 years; 183 ± 7 cm; 103 ± 31 kg; 32 ± 10% Fat; 36 ± 7 ml·kg^-1·min^-1) participated in the study. All subjects completed an acute aquatic treadmill exercise session (60% VO₂max; 300 kcal) on two consecutive days. Prior …

The Impact Of Simulated Altitude On Selected Elements Of Running Performance, Taylor G. Flowers, Matthew J. Garver, Cory M. Scheadler, Sarah J. Taylor, Logan M. Smith, Chase M. Harbach, Heather X. Johnson

International Journal of Exercise Science: Conference Proceedings

Background: Simulating altitude at sea level is increasingly more popular among recreationally-trained athletes across the sports spectrum. The AltO2Lab is a commercially-available, handheld, rebreathing apparatus purported to simulate altitude. Currently, there is an overall dearth of evidence regarding the efficacy of the device. Purpose: The goal of this study was to add evidence supporting or challenging the effectiveness of the device to improve selected running performance-related variables and to investigate the time-course of changes should benefits be evidenced. Methods: The 37-day protocol included familiarization, baseline, and 2 follow-up visits during which time hematological (hematocrit and lactate), physiological …

Elevated Psa Is Associated With Decreased Physical Function In Men With Prostate Cancer, Clayton S. Robinson, Darpan I. Patel

International Journal of Exercise Science: Conference Proceedings

Studies have reported an association between cortisol and fatigue in multiple clinical populations, including prostate cancer (PCa). Treatment options for men with PCa, such as androgen deprivation therapy (ADT), come with a wide variety of adverse effects, including cancer-related fatigue, which greatly impacts quality of life (QoL). PURPOSE: Conduct a preliminary analysis on the association between cortisol, fatigue and QoL in men with PCa. METHODS: This study is part of an ongoing study to determine the impact of PCa and PCa treatment on fatigue and QoL approved by the University of Texas Health Science Center at San Antonio …

Do Elliptical Trainers Accurately Estimate Energy Expenditure?, Kevin Vallecillos, Edith Torres, Alberto Garcia, Kelsey Mclaughlin, Bethany Noack, Jorge Granados

International Journal of Exercise Science: Conference Proceedings

Life Fitness and Precor elliptical exercise trainers are very popular in fitness centers because of the reduced impact on joints as compared to running on a treadmill. Modern elliptical trainers measure heart rate, distance traveled, and provide an estimated amount of calories expended during the exercise bout. Each piece of equipment uses an internal algorithm to estimate energy expenditure based upon resistance and pedal rate. The purpose of this study was to determine if the PRECOR model EFX 556i and Life Fitness model 95X elliptical trainers accurately estimated energy expenditure. Three men and three women performed exercise sessions on each …

Influence Of Tetrahydrobiopterin Supplementation On Rate Pressure Product, Upender Cheeti, Matthew Barlow Dr, David Proctor Dr

International Journal of Exercise Science: Conference Proceedings

Augmentation of tetrahydrobiopterin (BH₄) could potentially improve eNOS uncoupling by increasing Nitric oxide (NO) bioavailability to improve endothelial health in cardiovascular diseases. With age, the bioactivity of eNOS decreases resulting in a decrease in concentration and bioavailability of NO. Elevated levels of eNOS cofactor BH₄ helps in synthesizing NO, whereas limited concentrations of BH₄ production potentiallyleads to uncoupling of eNOS and the production of superoxides. A study conducted by Pierce et al., 2012 on young and old men showed that limited BH₄ bioavailability contributed to impaired arterial compliance, elasticity and other hemodynamics of vascular tissue. …

The Effects Of Shoe Design On Lower Limb Running Kinematics, Carol A. Bentley, Alexandra K. Dillon, Jimmy Smith, Scott Mclean

International Journal of Exercise Science: Conference Proceedings

The preference of running as a form of exercise exposes more recreational athletes to the risk of injury. Stress fractures occur for 0.7-20% of all running injuries (Wilder & Sethi, 2004) and 24-50% of stress fractures occur in the tibia (Aweid, Aweid, Talibi, & Porter, 2013). Stress fractures have been associated with high vertical impact peaks while running (Willy & Davis, 2013) so methods such as barefoot running and minimalist shoes aim to reduce these impact peaks by enforcing a more forefoot running pattern. Shoes with a lower drop height have been shown to induce a more forefoot running pattern …

The Effect Of Multiple Sclerosis On Carotid Baroreflex Control Of Heart Rate And Blood Pressure, Dustin R. Allen, Mu Huang, David M. Keller, Scott L. Davis

International Journal of Exercise Science: Conference Proceedings

Multiple sclerosis (MS) is marked by conduction abnormalities within the central nervous system that can lead to impaired blood pressure regulation. However, the impact of this disease on dynamic neural control—responsiveness and timing (i.e., latency)—of blood pressure has not been examined. Utilizing a variable neck chamber system, we tested the hypothesis that patients with MS (MS: n=4) exhibit an altered response following baroreflex perturbation compared to sex and age matched healthy controls (CON: n=4). At rest, 5-sec pulses of neck suction (NS; -60 Torr) and neck pressure (NP; +40 Torr) were applied to simulate carotid hypertension and hypotension, respectively. Mean …

Concurrent Validity Of The Sahara Portable Bone Sonometer, Anthony Joseph Anzalone, Phil Esposito

International Journal of Exercise Science: Conference Proceedings

Osteoporosis is a contemporary health issue in today’s society. Bone mineral density tests have the ability to detect low bone density before a fracture occurs. Presently, dual-energy X-ray absorptiometry (DXA) is a common method used to measure bone mineral density. In recent years, quantitative ultrasonography (ultrasound) has been used as a screening device at health fairs and other venues to estimate bone mineral density. The use of ultrasound offers several advantages: it exposes individuals to no radiation, it is inexpensive, and requires less tester skill and oversight than DXA.

PURPOSE: To assess the accuracy of calcaneal ultrasound as a …

The Effects Of Cup Stacking And Video Game Play On The Performance Of A Manual Dexterity Task, Jordan E. Banks, Scott P. Mclean, Jimmy Smith

International Journal of Exercise Science: Conference Proceedings

ABSTRACT

Dexterity and hand-eye coordination are important in daily life, and various methods of improving these skills have been developed. Most of the methods have been technological, brain training games that aren’t physically strenuous and make the participant feel as though they are just playing a game. Cup stacking and video gaming have been used throughout the United States in schools for improving motor skills and hand-eye coordination because they offer various simulations of scenarios requiring motor, visual and cognitive coordination. Purpose: To determine the effects of different types of gaming on dexterity in college aged participants. Methods: The participants …

The Effects Of Skill Level On Distance And Heart Rate In Collegiate Tennis Players, Sanio Dizdarevic, Erika Deike

International Journal of Exercise Science: Conference Proceedings

The purpose of this experiment was to evaluate if skill level affects distance traveled and heart rate in tennis players in a collegiate match. Previous studies using professional tennis players have shown an increased distance for higher skill level players. Therefore, it was hypothesized that the higher level group would travel further in a match and have higher heart rates than the lower level group. Men (N=6) and women (N=6) from the TLU tennis team were observed for this experiment. Subjects were placed into either a higher level group (Group A) or a lower level group (Group B), based on …

The Need For Reporting Metabolic Sampling Interval In Publication: An Example Using Maximal Vo2 Values And Running Economy, Chase M. Harbach, Matthew J. Garver, Cory M. Scheadler, Sarah J. Taylor, Logan M. Smith, Taylor G. Flowers, Heather X. Johnston

International Journal of Exercise Science: Conference Proceedings

Background: Knowledge of metabolic outcomes, such as maximal oxygen consumption (VO₂) or running economy, has wide-ranging application. Metabolic outcomes are widely reported in literature yet the metabolic sampling interval (example: breath-by-breath, 30-sec average) utilized for collection is rarely ever stated. Purpose: The purposes of the present investigation were to probe the potential discrepancies created when analyzing running economy and VO_2max raw metabolic data with four different metabolic sampling intervals. Methods: Five recreationally-active and endurance-trained subjects were included in the present analysis and four metabolic sampling intervals were analyzed: 30-sec average, 20-sec average, 8-breath, and …

Effects Of Acute Exercise On Executive Functions Of Cognition, Katlyn Debord, Erika Deike

International Journal of Exercise Science: Conference Proceedings

The purpose of this study was to evaluate the effects of an acute bout of aerobic exercise on executive functions of cognition, using the Interactive Stroop Effect Test. Men (N=) and women (N=), with a mean age of 22.33±, completed both a congruent and incongruent series on the Interactive Stroop Test before and after exercise. All participants were recreationally trained, exercising on an average of 1.24 hours a day and 4.5 days a week. The exercise bout consisted of running on a treadmill for 20 minutes at a moderate intensity, which was determined by using the Rate of Perceived Exertion …

Sex Differences In Change In Skin Temperature When Exercising In A Hot, Humid Environment, Adam S. Venable, Eric A. Prado, Andrea L. Henning, David W. Hill, Jakob L. Vingren, Brian K. Mcfarlin

International Journal of Exercise Science: Conference Proceedings

The risk for heat-related illness is increased when exercising in a hot, humid environment. In an effort to protect the athlete, body temperature is measured continuously while exercising in extreme environments. Currently, researchers and laboratory personnel employ the use of mean skin temperature to monitor athlete safety; however, this measurement fails to consider localized changes in temperature that may arise as a function of sex and exercise time. Therefore, the purpose of this study was to examine potential sex differences in the change in skin temperature at 17 different upper body locations while exercising in a hot, humid environment. Young …

The Relationships Between Fitness Assessments, Fitness Levels And Coronary Heart Disease Risk Markers In Police Officers, Kelsey Mclaughlin, Lauren Garcia, Bethany Noack, Jorge Granados, Dustin Joubert, John S. Green Facsm, Steve E. Martin, Stephen F. Crouse

International Journal of Exercise Science: Conference Proceedings

Given the physical nature of a position in law enforcement, the assessment of cardiovascular (CV) health as well as muscular strength and endurance is paramount to ensuring the safety of these personnel and the citizens they serve. The present study retrospectively examined correlations between several markers of CV and muscular fitness for 65 local police officers (8 female, average age 35.6 ± 9.0 yrs, height 70.5 ± 2.8 in, weight 91.8 ± 18.7 kg, VO₂ 33.0 ± 5.3 mL/kg/min) taken from their annual screening including a graded exercise test (GXT; Bruce protocol), pushups completed in 1 minute, situps completed …

Methods To Minimize Confounding Effects Of Hematocrit And Hemoglobin When Using Dried Blood Spots, Eric A. Prado, Adam Venable, Andie Henning, Jakob Vingren, David W. Hill, Brian K. Mcfarlin

International Journal of Exercise Science: Conference Proceedings

Dried blood spots (DBS) are an alternative method of collecting venous blood samples that can be used to measure blood biomarkers. Two confounding factors, hemoglobin and hematocrit, limit the validity of DBS in comparison to the gold standard serum sample. The saturation of biomarkers on DBS filter paper is affected by the sample’s hematocrit and hemoglobin. Also hemoglobin contamination is known to confounder for antibody binding in assay systems. The purpose of this study was two-fold: 1) to evaluate a DBS punching technique designed to limit the effects of hematocrit whilst minimizing sample volume and 2) to evaluate a novel …

Effects Of Obesity On Stability Control Among Young Adults In Responding To A Simulated Slip Induced In Gait, Jaeeun Kim

International Journal of Exercise Science: Conference Proceedings

Falls among older adults present a significant medical, societal, and economic challenge affecting not only the frail or impaired, but the active and vigorous. Falls initiated by slip account for about 25% of all falls among older people. Obesity has been regarded as a significant health problem. It has been reported that obesity causes muscle weakness, abnormal body mass distribution, and postural instability. Dynamic gait stability has been identified as a key factor leading to falls during slip in gait among both young and old adults. Despite the fact that obese individuals suffer higher risk of falls compared to non-obese …

Effects Of Vibration Training On Reducing Risk Of Falls Among Young Adults With Obesity, Jose J. Munoz

International Journal of Exercise Science: Conference Proceedings

Obesity is a major concern around the world. One of the major concerns associated with obesity is that it leads to increased risk of falls. High risk of falls among obese individuals has been related to several factors such as abnormal body mass distribution, muscle weakness, and postural instability. A significant portion of obese individuals are unable or unwilling to comply or manage conventional training regimens requiring high intensity and long duration. Therefore, alternative training methods are in high demand. Controlled whole-body vibration (CWBV) training has been proven to reduce the risk of falls among older adults. No study has …

Consumption Of A High-Fat Meal Increased Monocyte Adhesion Molecule Expression And Oxldl Phagocytosis: Implications For Cardiovascular Disease Risk?, Andrea L. Henning, Jill N. Sampson, Adam S. Venable, Eric A. Prado, David W. Hill, Jakob L. Vingren, Brian K. Mcfarlin

International Journal of Exercise Science: Conference Proceedings

Macrophage-derived foam cells are the predominant component of arterial plaques in the early stages of atherosclerosis. The deposition of arterial plaques is effected by several factors that are influenced by a person’s daily nutritional habits. One factor that poses a major risk for plaque development is high levels of plasma LDL resulting from the consumption of a high-fat meal. In order to understand how an individuals’ diet effects arterial plaque deposition via the process of foam cell formation, we measured the acute response in circulating monocyte activity after consuming a high-fat meal. Samples were acquired on a FlowSight (EMD Millipore) …