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Sexual Determination From Frontal Sinus Analysis In A Subadult Population Using Archival Radiographic Records, Erica Crosta

UNLV Theses, Dissertations, Professional Papers, and Capstones

The goal of this study is to use the improved imaging capability of cone-beam computerized tomography (CBCT) to investigate the development and sexual dimorphism of the frontal sinus and surrounding supraorbital region in the subadult population of urban Southern Nevada. CBCT radiographs were obtained from the UNLV School of Dental Medicine archival dental records. Five hundred and fifty six of these radiographs were reviewed for the study. Two hundred and sixteen patients (92 males, 124 females) between the ages of 7 and 20 years were included based on inclusion/exclusion criteria. Samples were categorized into 3 subadult age groups for analysis: …

Oral Microbial Burden Of Periodontal Pathogens Among Orthodontic Patients, David Jolley

UNLV Theses, Dissertations, Professional Papers, and Capstones

Objectives

Many research studies involving orthodontic patients have a natural inclination to focus on changes in levels of cariogenic pathogens after bracket placement, and very few studies examine the role of changes of periodontal pathogens – particularly among adult patients. Interestingly, recent evidence suggests that increased levels of a specific periodontal pathogen, Fusobacterium nucleatum, may elevate risk for development of colon cancer in adults through direct pathways. Based upon this new evidence, the objective of the current study was to screen saliva samples taken from orthodontic patients to determine the prevalence of periodontal pathogens, including F. Nucleatum, T. denticola, and …

Behavioral Reactions To Emotional And Physical Infidelity: An Evolutionary Perspective, Mandy Walsh Walsh

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis examined the effects of sex and type of partner infidelity, including both physical (i.e., sexually involved with another person) and emotional (i.e., emotionally involved with another person) infidelity, on mate abandonment behaviors. Previous research has demonstrated sex differences in emotional responses to infidelity, where men react more negatively to physical infidelity and women react more negatively to emotional infidelity. While various studies have investigated perceived behavioral reactions using imagined scenarios, this study expands current research by utilizing actual retrospective reports. It was hypothesized that males would engage in significantly more mate abandonment behaviors after experiencing a physical infidelity, …

The Effects Of An Inclined And Declined Slope On Backward Locomotion: A Kinematic And Electromyographic Analysis Of Retrowalking, Song Dan Vo

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to investigate the effects of an inclined and declined slopeon kinematic properties and muscle activation magnitudes. This purpose was achieved by using a +10% grade for inclined backward walking (IBW) and -10% grade for declined backwardwalking (DBW) on a treadmill. Eleven participants (24.6 ± 4.1 yrs, 68.5 ± 14.6 kg, 1.7 ± 0.1 m) were recruited from the UNLV student body and were subject to a three day adaptation protocol to allow them to choose a preferred walking speed and to familiarize themselves with such a novel task. Two consecutive practice days included a …

The Acute Effects Of Different Foam Rolling Timing Durations On Hamstring Flexibility, Chloe Marie Kipnis

UNLV Theses, Dissertations, Professional Papers, and Capstones

The use of a foam roller is growing in popularity as a part of a warm-up in order to prepare for activity. The current research, however, lacks an accepted timing duration for how long an athlete should foam roll prior to activity in order to increase range of motion (ROM). In order to guide clinical practice, it is necessary to establish a standard for how long an athlete should foam roll a muscle group with the goal to increase ROM. Therefore, the purpose of this study was to compare hamstring flexibility changes following a single foam rolling bout, performed for …

Muscle Activity And Power Output Between Stationary And Outdoor Cycling, Jared Joerger

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study is to compare lower extremity muscle activity and power output during cycling outdoors overground and cycling on a stationary bike trainer at different self-perceived intensity levels. Recreational and competitive cyclists and triathletes, eight male (48.6±8.7 years, 178.9±7.8 cm, 87.1±8.3kg) and three female (40.3±6.8 years, 158±1 cm, 59.6±9.3 kg), signed institutionally approved informed consents and participated in this study. Power data were collected using power instrumented bicycle pedals (PowerTap, Madison, WI) attached to the cyclist’s bicycle. Muscle activity was recorded using wireless electromyography (Delsys, Inc., Natick, MA) sampling at 1926Hz. Participants were tested for maximum voluntary …

Effectiveness Of Commercially-Available Cosmetic Cleaners On Cosmetics And Cosmetic Brushes, Vanessa Ortiz

UNLV Theses, Dissertations, Professional Papers, and Capstones

The complex nature of skin contributes to the microbial population present on its surface. While normal skin flora is either beneficial or has no effect on the body, there are instances where pathogenic microorganisms are present and can cause infections. Damaged skin is more susceptible to infections from these microbes. Behavioral characteristics, such as the use of cosmetics, can affect the microbial population present on the skin. Staphylococcus aureus is the organism most commonly isolated from cosmetics, and it can be responsible for conjunctivitis, impetigo, boils, and folliculitis.

There are many ways microbial contamination of cosmetics can occur, such as …

Post-Concussion Symptom Reporting: Is Gender A Factor In The Adolescent Population? A Systematic Review And Meta-Analysis, Jessica Dunne

UNLV Theses, Dissertations, Professional Papers, and Capstones

The participation in high school athletics among the adolescent population has continued to rise over the past few years. Concussion research has grown and evolved due to an increase in awareness of the seriousness of this injury based on the increase in quantity studies being produced. The research conducted to determine if differences occur between high school athletes and collegiate athletes and if a difference is observed between the genders, has being to grow. Although there has been an increase in research for this injury, the understanding of how this injury affects the adolescent population and how this injury differs …

Assessing Clinical Significance Of The Immediate Post-Concussion Assessment And Cognitive Testing Battery When Comparing Adjusted And Unadjusted Rci Methods For Different Ranges Of Baseline Scores, Ashley N. Figaro

UNLV Theses, Dissertations, Professional Papers, and Capstones

The growing concern revolving around the dangers of sports-related concussions have led to the most recent implementation of neurocognitive (NC) test batteries as a means to objectively determine the presence of a cognitive defect. Whereas any other sports-related injury can be diagnosed with tools such as an x-ray or MRI, a concussion represents a metabolic disturbance that cannot be identified by these diagnostic tools. Many neurocognitive test batteries employ statistical techniques to derive cut off scores in order to represent significant or insignificant changes as compared to individual baseline scores, or pre-established normative values. If an individuals’ post-injury score exceeds …

Investigation Of Sequential Intermittent Pneumatic Compression Effect On Run Performance, Max Evan Jones

UNLV Theses, Dissertations, Professional Papers, and Capstones

The main aim of this study was to determine if IPC after a 5000 m run influences maximal effort 1600 m run performance. A secondary purpose was to determine if the level of IPC pressure used influences run performance. Nine subjects (6 male and 3 female were included in the study; 30 years±5.19 years; Height 173.72cm±8.25; Weight; 72.54±9.97 kg). These subjects were recruited to be in this study via word of mouth or social media advertisement in the Las Vegas area. Participant inclusion criteria was 18- 50 year old apparently healthy, had been running a minimum of 20 miles a …

Hunger Games: The Effects Of Alternate Day Fasting On Food Intake, Body Weight, And Leptin And Ghrelin In Rats, Debra Kirsty Mortel Tacad

UNLV Theses, Dissertations, Professional Papers, and Capstones

PURPOSE: To determine whether a compensatory increase in food intake occurs following a day of fasting, and to determine whether leptin and/or ghrelin levels change in response to ADF compared with ad libitum feeding.

INTRODUCTION: Recently, alternate-day fasting (ADF) has grown in popularity as an alternative to continuous energy restriction (CER) diets as a method for improving health and controlling food intake. Leptin and ghrelin are two hormones implicated in the regulation of food intake and body weight, however their response to ADF is unclear.

METHODS: Male Wistar rats of the same age and weight were randomly assigned to the …