Kinesiology Commons^™

The Effects Of Sr2w-1 Supplementation On High-Intensity Cycling Performance And Lactate Metabolism, Kevin A. Murach

Masters Theses, 2010-2019

Purpose: The purpose of this investigation was to examine the effects of SR2W-1 herbal supplementation on cycling performance, muscle and blood lactate, and various physiological parameters including blood glucose, heart rate (HR), rating of perceived exertion (RPE), oxygen consumption (VO2), expired ventilation (VE), respiratory exchange ratio (RER), and femoral artery blood flow. Methods: Seven recreational cyclists (Age: 26.7 ± 9.8 yrs, Height: 172.5 ± 13.3 cm, Weight:67.1 ± 10.7 kg, and VO2max: 59.5 ± 11 mL/kg/min) performed 20-min of steady-state cycling (~85% VO2max, 212.1 ± 25.0 W) followed by three 1-min high intensity intervals at VO2max workload (272.9 ± 26.9) …

The Effects Of Sr2w-1 Supplementation On Cycling Performance And Muscle Fatigue, Tara Ali Ata

Masters Theses, 2010-2019

The purpose of this investigation was to examine the potential effects of SR2W-1 supplementation on cycling performance, central fatigue, and a variety of physiological parameters, including blood lactate, blood pH, heart rate (HR), rating of perceived exertion (RPE), oxygen consumption (VO2), expired ventilation (VE), and respiratory exchange ratio (RER). Methods: Five recreational cyclists (38 ± 8 yr, 168.4 ± 4.3 cm, 68.8 ± 5.6 kg, and 54.4 ± 2.6 mL/kg/min) performed 20-min of steady-state cycling (~85% VO2max) followed by three 1-min high intensity intervals at VO2max with 30-sec active recovery periods at 100 W, 15-min passive recovery period, and a …

Volume Of Physical Activity And Hemostatic Variables In Pregnant Women, Christine Nicewonger

Masters Theses, 2010-2019

Purpose: This study investigated the relationship between blood coagulation and fibrinolytic potential and physical activity. Physical activity levels to predict blood coagulation and fibrinolytic potential were also examined. Methods: Twenty-three pregnant women, aged 19-34 yrs, had a fasted blood draw between 6 and 10 a.m. analyzed for tPA antigen, tPA activity, PAI-1 antigen, and vWF antigen. Trimester specific volume of leisure time physical activity was assessed by the Modifiable Activity Questionnaire (MAQ) and converted to METmin/wk. Based on MAQ results, women were grouped as meeting (“active”) or not meeting (“sedentary”) physical activity recommendations established by American College of Obstetrics and …

Post-Exercise Hypotension In Brief Exercise, Jeremiah G. Bush

Masters Theses & Specialist Projects

The purpose of this investigation was to examine whether a single 10 minute bout of exercise, performed at multiple intervals throughout the day to equal 30 minutes, can effectively elicit post-exercise hypotension (PEH). Secondly, it is important to explore whether a light (40% VO2R) or moderate (70% VO2R) intensity is required to elicit PEH within 10 minutes. Subjects (N=11) completed a VO2max test utilizing the Bruce Treadmill protocol. Each subject returned within 3 – 5 days to complete two separate exercising trials. A counter balanced system was employed so that each subject did not perform the same intensity rotation (Counter …

The Effects Of Caffeine On A Time-Trial Cycling Performance, Chris Tucker

Kinesiology Student Research - Archive

Caffeine is one of the most widely consumed drugs in the world. Its mechanism of action has given it credibility as an ergogenic aid. It has been shown to stimulate the mobilization and oxidation of free fatty acids (FFA), thus sparing muscle glycogen. Caffeine is also well documented as a central nervous stimulant and its direct effect on the central nervous system is found in its role as an adenosine antagonist. It is thought to inhibit adenosine from blocking neuronal transmission thus increasing pain tolerance and reducing fatigue.

Aerobic Capacity Of Wheelchair Basketball Players During Arm Crank Ergometry Vs Treadmill, Steve Quaker

Kinesiology Student Research - Archive

It is difficult to determine the aerobic capacity of wheelchair athletes by the accepted standards and methods of testing. The levels of disability and the associated functionality of the individual as well as wheelchair design itself impacts the measure of VO2 peak. VO2 peak is the maximum volume of O2 that a person's body can transport to tissue during incremental exercise. At the current time VO2 peak is the best indicator of physical fitness of an individual.

The Effects Of A Supplement (Body Rush) On Responses To A Maximal Stress Test, Isaac Dankyi

Kinesiology Student Research - Archive

Body Rush is a nitric oxide booster supplement that claims to dramatically improve strength, stamina, and focus. The active ingredients that are projected to change the dynamics of one’s output are: L-Carnitine to turn fat into energy, BCAAs which are amino acids that are metabolized in the muscles instead of the liver, and L-Arginine which has the ability to release growth hormone and support healthy cholesterol. A maximal graded exercise test (GXT) will be performed via Bruce protocol to determine if maximal oxygen consumption (VO2 max), rate of perceived exerction (RPE), respiratory exchange ratio (RER), rate of respiration (RR) and …

The Effect Of Compression Sleeves On Blood Lactate During An Arm Ergometer Max Test, Sergio Daniel Arciniega

Kinesiology Student Research - Archive

Among athletes, the use of compression sleeves has been widely used with the intentions of increased flexibility, improved blood circulation, and increased muscle oxygenation. Therefore, the performance enhancements provided by compression sleeves could affect the amount of lactic acid accumulated within the muscle. Lactic acid builds up in the muscles as a byproduct of anaerobic activity, which dissociates into lactate and H+ resulting in a decrease in pH and is thought to lead to muscle fatigue.

Relationship Between Balance Confidence And Dynamic Computerized Posturography, Megan Tracy

Kinesiology Student Research - Archive

The purpose of this study was to examine the relationship between balance confidence, as measured by the BES, and performance on the SOT as measured by the composite SOT score.

The Effect Of Cytomax Sports Drink On Blood Lactate Levels In A 400 M Run, Christina Driscoll

Kinesiology Student Research - Archive

During short term exercise, lactic acid is formed as a byproduct of glycolysis. It forms from pyruvate when oxygen is not present in the muscles. Lactic acid then diffuses from the muscles into the blood and is broken down into lactate and hydrogen ions. This excess of hydrogen ions causes the blood pH to lower, unless it is buffered by the body. Many substances such as sodium bicarbonate, superoxygenated water, and caffeine have been tested as buffers, but none has been found to be both safe and effective. A new product, Cytomax performance drink claims to be a buffer.

The Effect Of Wearing Compression Garments On Responses To Submaximal Exercise, Shayan Moslemi

Kinesiology Student Research - Archive

The aim of this study was to determine whether or not wearing compression garments has an effect on heart rate, blood pressure, blood lactate levels, and rate of perceived exertion (RPE) during submaximal exercise.

Effects Of Nitric Oxide Supplementation On Maximal Graded Exercise, Erin Lewis

Kinesiology Student Research - Archive

Nitric oxide (NO) is a naturally occurring substance in the body. It is released during exercise, stimulating vasodilatation, which increases blood flow to the muscles. It has become a popular form of supplementation in the past few years, gaining popularity over creatine use (which it is now often stacked with). Companies introduced nitric oxide as a supplement similar to creatine; naturally occurring in the body to aid in exercise, and by increasing the supply, they claim that it would enhance the user’s exercise capacity. However, there are few studies done that test the actual physiological effects of nitric oxide supplementation …

The Relationship Between Sleeping Habits And Body Fat Composition, Ashley Longoria

Kinesiology Student Research - Archive

The purpose of this research was to compare the relationship between sleeping habits and body fat composition.

The Effects Of Core Stabilization On Blood Lactate Levels, Isela Salinas

Kinesiology Student Research - Archive

The purpose of this research was to examine if Core Stabilization exercise enhanced blood lactate clearance following a Wingate Anaerobic Power Test (WAnT).

The Effects Of Caffeine On A Time Trial On A Cycle Ergometer, Allen Conly

Kinesiology Student Research - Archive

Some people wake up in the morning and grab that cup of coffee to get a boost of energy to get moving. Why is it that coffee is used for this? Perhaps, it’s because of the ingredients found in coffee, like caffeine, in particular. Caffeine is used as a stimulant and a diuretic. A stimulant is an agent that enhances the activity of a body system or function. Because of its stimulating effects, caffeine is often used as an ergogenic aid. Caffeine can be used to stay awake or for better mental alertness in times of fatigue. An ergogenic aid …

Cryotherapy And Its Effects On Shoulder Proprioception, Spencer Elswick

Kinesiology Student Research - Archive

Proprioception, or the relative sense of body position in space, is accomplished by a complex integration of multiple sensory receptors within the skin, muscle, joints, ligaments, and tendons. These proprioceptors continually send afferent neural impulses to the central nervous system regarding peripheral joint stability and movement and are typically stimulated (excited) with tissue deformation via stretching or compression. However, when an athlete sustains an injury to a joint during competition, the joint is most commonly treated with a desensitizing treatment like cryotherapy. Ice application is used to interrupt pain sensation by decreasing nerve conduction velocity, inflammatory mediators, and metabolic byproducts. …

Functional Movement Screen Predicators: Can High Fms Scores Be Predicted Through Range Of Motion, Strength, And Balance Measures?, Jeremy L. Hester

Kinesiology Student Research - Archive

There has been a steady increase in sport participation in the U.S. over the recent years, and with increases in activity comes a rise in the physical demands of sport on the musculoskeletal system. These demands coupled with increased sport activity can yield an increase in the risk of injury. Functional movement occurs in everyday life, and even more so in an athletic population. When these movements are imbalanced or biomechanically inefficient, breaks in the proper kinetic chain of movement will begin to occur. Compensatory movement will follow the bodies physical deficits, so early detection or proper intervention are important. …

Effects Of Vo2 Max Test On Short Term Memory, Olufemi Ola-Ajose

Kinesiology Student Research - Archive

Exercise in healthy adults has been shown to small but positive effects on cognitive function. Short term or working memory is a limited storage system in which a memory is lost or decays rapidly. Short term memory is believed to support an array of complex cognitive behaviors such as reading comprehension and mathematical problem solving (Beilock & Carr, 2005). The effects of exercise intensity on short term memory is varied, although submaximal and moderate exercise bouts have been shown to have a positive effect on memory. Exercise causes changes in cardiorespiratory, hormonal and metabolic processes that may increase the availability …

The Effect Of Lactate Buildup As An Energy Substrate During A Short-Duration, High-Intensity Run Of 400-M And A Medium Run Of 800-M On Uta Kinesiology Students, Davor Krnjajic

Kinesiology Student Research - Archive

Lactic acid is a metabolic byproduct of the anaerobic glycolysis energy system present in blood and muscle. Some research indicates that lactic acid is a marker of fatigue during short duration exercise due to its dissociation into lactate and the H+ ion, whose accumulation in tissues and blood can lead to a subsequent decrement in muscle and plasma pH causing an inhibition of coupling mechanisms and enzymatic processes necessary for maintenance of muscular force production. Other studies have not implicated lactate to be the sole contributor of fatigue, as different types of exercise produce multifaceted fatigue factors, depending on muscle …

What Does It Take To Be A National Cheerleading Champion?, Rolando J. Aviles

Kinesiology Student Research - Archive

Cheerleading involves the performance of skills requiring a high degree of muscular strength, endurance, flexibility, balance, and determination. Despite the trend of cheerleaders performing increasingly difficult and athletic skills, very little is known about their physiological fitness levels.

Comparing Limit Of Stability And Sensory Organization Test Scores As A Predictor Of Fall Risk In Men And Women, Ampa Pantages

Kinesiology Student Research - Archive

Falls in older patients often occur when several tasks are performed simultaneously and have become the leading cause of injuries such as bone fractures. Factors such as reaction time, flexibility, and directional control can help determine the fall risk in older individuals.

The Evaluation Of Hand Strength In An Aging Population, Linzi Ball

Kinesiology Student Research - Archive

Muscular deterioration is a well known effect that aging has on individuals. As a person gets older, their muscles naturally become worn down and more atrophied as compared to their younger counterparts. The ability of an individual to perform their activities of daily living may be compromised by low muscular strength even in healthy older individuals. There is mounting evidence to show not only endurance capacity but also strength is a predictor of health, especially in elderly people. Many studies have shown a correlation between muscular strength and future morbidity, disability, and mortality in these individuals and many of them …

Kinematic And Electromyographic Description Of Baseball And Softball Catching, Hillary Ann Plummer

Graduate Theses and Dissertations

The catcher is actively involved, defensively, in every pitch that is thrown during the duration of a baseball or softball game. Because catchers play such an active role, the outcome of the game can be decided on their ability to keep base runners from stealing and advancing into scoring position. The ability to throw out a stealing runner is a necessary skill that catchers must possess in order to be successful at their position. To keep a base runner from stealing catchers have the option of throwing down to second base from either their stance or their knees. Despite the …

The Effects Of Reading Distraction During Steady-State Exercise On Exercise Intensity, Megan Holt, Megan Tracy, Mitchel Samels

Kinesiology Student Research - Archive

The consequence of reading during exercise on the cardiovascular response to exercise (e.g., heart rate response) and the intensity of the performed exercise remains incompletely understood through existing publications. Therefore, the aim of this study is to examine the effect of reading during exercise on heart rate responses to exercise and exercise intensity performance.

The Self: Your Own Worst Enemy? A Test Of The Self-Invoking Trigger Hypothesis, Bradley J. Mckay

UNLV Theses, Dissertations, Professional Papers, and Capstones

The self invoking trigger hypothesis was recently proposed by Wulf and Lewthwaite (2010) as the mechanism underlying the robust effects of attentional focus on motor learning and performance. The hypothesis suggests that causing individuals to access their self schema will negatively impact their ability to learn and perform a motor skill. The purpose of the present study was to provide an initial test of this hypothesis by causing one group of participants to activate their self schema in a straightforward manner. Participants (N = 32) were assigned to either a self-activated or control condition and asked to practice a wiffleball …

The Effect Of Self-Controlled Practice On Forearm Passing, Motivation, And Affect In Women’S Volleyball Players, Nels Rydberg

UNLV Theses, Dissertations, Professional Papers, and Capstones

Motor learning research has suggested that self-controlled practice (or “autonomy”) leads to more effective learning of motor tasks. Debate continues, however, as to why. Most motor behaviorists maintain the better learning is due to cognitive and information-processing factors. Recently, others have proposed the learning enhancement is due to such psychological factors as motivation and affect. The present study sought to measure motor skill learning, intrinsic motivation, and affect in self-controlled versus externally-controlled (yoked) practice conditions.

Participants, 16 collegiate women’s volleyball student-athletes from two National Collegiate Athletic Association Division I programs, were paired by forearm passing skill level, and one of …

Agonist And Stabilizer Muscle Activity During A Push Up On Unstable Surfaces, Anthony J. Dyrek

UNLV Theses, Dissertations, Professional Papers, and Capstones

A recent trend among fitness professionals is to have clients perform resistance exercises on unstable equipment. Anecdotally, this is done with the intent that stabilizing and agonist muscles are more active while doing certain exercises on unstable surfaces. However, there are limited data as to whether or not this is the case and no studies have investigated muscle activity while doing the same exercise on surfaces that offer different levels of stability. Therefore, the purpose of this study is to measure electromyography (EMG) during push up exercise performed on unstable surfaces as well as on the ground. Surface EMG was …

Effect Of Aquastretch On Range Of Motion At Knee Joint In Total Knee Arthroplasty Patients, Raja Devinder Kochar

UNLV Theses, Dissertations, Professional Papers, and Capstones

The success of the Total Knee Arthroplasty (TKA) depends upon its functional outcomes of increase in reduction in pain, and gait ambulation and performing functional activities of daily living. Compromised range of motion, pain and weakness can reduce their ability to perform activities of daily living. Aquatic Physical Therapy may offer an alternative intervention to traditional Physical Therapy Rehabilitation and many studies have shown improvements in range of motion, swelling, pain reduction, stiffness and quality of life after TKA. AquaStretch, a relatively new form of aquatic therapy, claims to restore the functional mobility which is lost restrictions caused due to …

The Acute Effects Of Various Types Of Stretching (Static, Dynamic, Ballistic, And No Stretch) Of The Iliopsoas On 40-Yard Sprint Times In Non-Athletes, Scott David Christensen, Craig Perry, Ryan Richard Resnik

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to determine the effect of static, ballistic, dynamic, and no stretching immediately prior to a 40-yard sprint in college students. There were 35 healthy subjects (22 male and 13 female) between the ages of 24 and 37 (Mean = 26.46 yrs, SD = 2.99 yrs) who participated. The experiment consisted of running 4, 40-yard sprint trials immediately following 1 of 4 different stretching protocols. Prior to each 40- yard sprint trial, a 5-minute warm up was performed at 3.5 mph on a treadmill. Each subject received each of the four techniques in a randomized …

Examining Activity Levels And Motor Proficiency: A Comparison Of Children Who Are Overweight And At A Healthy Weight To Their Parents And Peers, Aaron Copeland, Maresa Madsen, Riley Phelps, Brandon Richards

UNLV Theses, Dissertations, Professional Papers, and Capstones

Objective: The purpose of this study was to examine relationships and differences between motor proficiency, activity level, and parental activity level in children who are at a healthy weight and children who are overweight or obese.

Methods: Forty-four children (26 children at a healthy weight and 18 children who were overweight or obese) between the ages of 8-16 (BMI: 14.3-43.6 kg/m2) and 36 parents (BMI: 18.1-44.7) participated in this study. Children and parents wore StepWatch activity monitors (SAM) to measure activity levels over a 72 hour period. Tests reflecting several determinants of motor performance were also administered to …