Recreational Therapy Commons^™

Near Infrared Spectroscopic Monitoring During Cardiopulmonary Exercise Testing Detects Anaerobic Threshold, Rohit P. Rao, Michael J. Danduran, J. E. Dixon, Rohit S. Loomba, George M. Hoffman

Exercise Science Faculty Research and Publications

Cardiopulmonary exercise testing (CPET) provides assessment of the integrative responses involving the pulmonary, cardiovascular, and skeletal muscle systems. Application of exercise testing remains limited to children who are able to understand and cooperate with the exercise protocol. Near-infrared spectroscopy (NIRS) provides a noninvasive, continuous method to monitor regional tissue oxygenation (rSO2). Our specific aim was to predict anaerobic threshold (AT) during CPET noninvasively using two-site NIRS monitoring. Achievement of a practical noninvasive technology for estimating AT will increase the compatibility of CPET. Patients without structural or acquired heart disease were eligible for inclusion if they were ordered to undergo CPET …

Near Infrared Spectroscopy Describes Physiologic Payback Associated With Excess Postexercise Oxygen Consumption In Healthy Controls And Children With Complex Congenital Heart Disease, Michael J. Danduran, J. E. Dixon, Rohit P. Rao

Exercise Science Faculty Research and Publications

Exercise creates a physiologic burden with recovery from such effort crucial to adaptation. Excess postexercise oxygen consumption (EPOC) refers to the body’s increased metabolic need after work. This investigation was designed to determine the role of near infrared spectroscopy (NIRS) in the description of exercise recovery in healthy controls (NL) and children with congenital heart disease (CHD). Subjects were recruited with exercise testing performed to exhaustion. Exercise time (EXT), heart rate (HR), and oxygen consumption (VO₂) were measured. Four-site NIRS (brain, kidney, deltoid, and vastus lateralis) were measured during exercise and into recovery to establish trends. Fifty individuals …

Determining The Validity Of The Nintendo Wii Balance Board As An Assessment Tool For Balance, Sabrina Mae Deans

UNLV Theses, Dissertations, Professional Papers, and Capstones

Context. Application of the Nintendo Wii-fit balance board and its games have been used in Physical Therapy clinics, showing success in individuals with neurological disorders, and has been recommended as a minimum baseline assessment of a symptoms checklist and standardized cognitive and balance assessments for concussion management by the NCAA. However, it still faces challenges of being considered a reliable and consistent tool for producing normative data in the allied healthcare. Because there is little to no evidence for the Wii-fit balance board as a valid balance assessment tool for clinical and/or research usage, the significance of this study is …

Association Between The Female Athlete Triad And Endothelial Dysfunction In Dancers, Anne Z. Hoch, Paula E. Papanek, Aniko Szabo, Michael E. Widlansky, Jane E. Schimke, David D. Gutterman

Exercise Science Faculty Research and Publications

Objective: To determine the prevalence of the 3 components of the female athlete triad [disordered eating, menstrual dysfunction, low bone mineral density (BMD)] and their relationships with brachial artery flow-mediated dilation in professional dancers.

Design: Prospective study.

Setting: Academic institution in the Midwest.

Participants: Twenty-two professional ballet dancers volunteered for this study.

Interventions: The prevalence of the female athlete triad and its relationship to endothelial dysfunction.

Main Outcome Measures: Subjects completed questionnaires to assess disordered eating and menstrual status/history. They also completed a 3-day food record and wore an accelerometer for 3 days to …

Resilient Observer Design For Discrete-Time Nonlinear Systems With General Criteria, Chung Seop Jeong, Edwin E. Yaz, Yvonne I. Yaz

Exercise Science Faculty Research and Publications

A class of discrete-time nonlinear system and measurement equations having incrementally conic nonlinearities and finite energy disturbances is considered. A linear matrix inequality based resilient observer design approach is presented to guarantee the satisfaction of a variety of performance criteria ranging from simple estimation error boundedness to dissipativity in the presence of bounded perturbations on the gain. Some simulation examples are included to illustrate the proposed design methodology.

The Underrecognized Role Of Impaired Muscle Function In Cancer-Related Fatigue, Alexander V. Ng

Exercise Science Faculty Research and Publications

No abstract provided.

Shoulder Rehabilitation For The Injured Overhead-Throwing Athlete, Joshua M. Raskoff

Recreation, Parks, and Tourism Administration

Baseball incorporates the violent motion of throwing as a main act of physical exertion. The shoulder joint is vulnerable to injury during this movement. The overall purpose of this study was to produce a rehabilitation program for injured overhead-throwing athletes and have it evaluated by healthcare professionals. A paper and pen style questionnaire was sent through the mail to a network of professionals in California. Eighteen of the 20 questionnaires were returned. The quantitative feedback of the Likert scale questions indicated that the program was effective and usable while the qualitative feedback indicated the opposite. The additional comments allowed experts …

Sex Differences And Mechanisms Of Task-Specific Muscle Fatigue, Sandra K. Hunter

Exercise Science Faculty Research and Publications

Women can be less fatigable than men due to sex-related differences within the neuromuscular system that impact physiological adjustments during a fatiguing task. The involved mechanism(s) for the sex difference, however, is task specific. This review explores the novel hypothesis that variation of the task will alter the magnitude of the sex-difference in muscle fatigue and the contribution of involved mechanisms.

Sex Differences In Time To Task Failure And Blood Flow For An Intermittent Isometric Fatiguing Contraction, Sandra K. Hunter, Erin E. Griffith, Kristine M. Schlachter, Tim D. Kufahl

Exercise Science Faculty Research and Publications

The purpose of this study was to compare the time to task failure, postcontraction hyperemia, and vascular conductance of young men and women for a submaximal intermittent fatiguing contraction performed with the handgrip muscles. Twenty men and 20 women (mean SD: 22 4 years) performed an isometric contraction at 50% of maximal voluntary contraction (MVC) (6-s contraction, 4-s rest) until task failure. Forearm venous occlusion plethysmography was used to estimate the peak blood flow (after 10-min occlusion) and blood flow at rest after 6-s submaximal contractions of varying intensities, and during an intermittent fatiguing contraction at 1-min intervals and task …

Making Sense Of Men's Workout Practices: The Body, Age And Identity, Andrew Dunne

Masters

Background: Within sociology it is generally accepted that the body has become an object or “project” that is worked on and transformed as a central part of self-identity (Baudrillard 1998; Corrigan 1997; Featherstone 1991; Giddens 1991; Turner 1995, 1992; Shilling 2003). An alternative to such arguments, Leder (1990) conceptualizes the body as an “absent presence”. He argues that, while the body plays a central role in shaping our experience of the world, we are frequently oblivious to our own bodies. For Leder, bodywork is sporadic. He contends that specific social and/or physiological experiences cause the body to “dys-appear”, or enter …

Active Hyperemia And Vascular Conductance Differ Between Men And Women For An Isometric Fatiguing Contraction, Sandra K. Hunter, Jennie M. Schletty, Kristine M. Schlachter, Erin E. Griffith, Aaron J. Polichnowski, Alexander V. Ng

Exercise Science Faculty Research and Publications

To understand the role of muscle perfusion in the sex differences of muscle fatigue, we compared the time to task failure, postcontraction (active) hyperemia, and vascular conductance for an isometric fatiguing contraction performed by young men and women with the handgrip muscles at 20% of maximal voluntary contraction (MVC) force. In study 1, the men (n = 16) were stronger than the women (n = 18), and study 2, the men (n = 7) and women (n = 7) were matched for strength. Isometric contractions were sustained during two sessions: 1) until the target …

Sight-Reading Versus Repertoire Performance On The Piano: A Case Study Using High-Speed Motion Analysis, Brenda Wristen, Sharon Evans, Nikolaos Stergiou

Health and Kinesiology Faculty Publications

This study was intended to examine whether differences exist in the motions employed by pianists when they are sightreading versus performing repertoire and to determine whether these differences can be c[uantified using high-speed motion capture technology. A secondary question of interest was whether or not an improvement in the efficiency of motion could be observed between two sight-reading trials of the same musical excerpt. This case study employed one subject and a six-camera digital infrared camera system to capture the motion of the pianist playing two trials of a repertoire piece and two trials of a sight-reading excerpt. Angular displacements …

Disaggregating The Relative Influence Of Genetic, Environmental And Individual Factors On Ldl And Hdl Cholesterols And Bmi For A Sample Of African American (Aa) Mothers And Daughters, C. Jayne Brahler, Jewel Harden, Michelle Mchone, Matthew Soules, Eric Evans, Ann Alyanak, Fred Diakpieng, Paul M. Vanderburgh

Health and Sport Science Faculty Publications

There are many reports about the associations between blood lipids, body mass index (BMI) and dietary cholesterol intakes both within the individual and between related individuals. The purpose of this descriptive research project was to investigate the relationships between LDL and HDL cholesterols, body mass index and dietary cholesterol intakes for a sample of African American (AA) mothers and their daughters and to attempt to separate the contribution of genetic versus environmental factors. Mother and daughter participants (n =42 and 66, respectively) were 12-14-hours fasted when blood samples were drawn, heights and weights measured, and 24 hour food recalls completed.

Variability Of Motor Unit Discharge And Force Fluctuations Across A Range Of Muscle Forces In Older Adults, Brian L. Tracy, Katrina S. Maluf, Jennifer L. Stephenson, Sandra K. Hunter

Exercise Science Faculty Research and Publications

Variability of motor unit discharge is a likely contributor to the greater force fluctuations observed in old adults at low muscle forces. We sought to determine whether the variability of motor unit discharge rate underlies the fluctuations in force during steady contractions across a range of forces in young (n = 11) and old (n = 14) adults. The coefficient of variation (CV) for discharge rate and force were measured during a force-matching task as the first dorsal interosseous muscle performed isometric contractions. The recruitment thresholds of the 78 motor units ranged from 0.04% to 34% of maximal …

Qtc Is Associated With Obesity And Physical Activity Level For African American Females, C. Jayne Brahler

Health and Sport Science Faculty Publications

Long QT syndrome (LQTS) is an independent risk factor for cardiovascular or ischemic disease mortality. Obesity as a cause for acquired LQTS in otherwise healthy individuals is rapidly gaining the attention of the scientific community. African American people have a higher incidence of obesity compared to Caucasians, yet race-specific information is not available for their prevalence of LQTS. Chronic physical activity can help reduce the incidence of obesity, yet little is known about the effects of chronic physical activity on acquired LQTS. Subjects in this study were a volunteer sample of African American mothers (21-53 yr, n = 44) and …

Ventilatory Phenotypes Among Four Strains Of Adult Rats., Matthew Hodges, Hubert Forster, Paula E. Papanek, Melinda R. Dwinell, Genevieve E. Hogan

Exercise Science Faculty Research and Publications

Our purpose in this study was to identify different ventilatory phenotypes among four different strains of rats. We examined 114 rats from three in-house, inbred strains and one outbred strain: Brown Norway (BN;n = 26), Dahl salt-sensitive (n = 24), Fawn-hooded Hypertensive (FHH: n = 27), and outbred Sprague-Dawley rats (SD; n = 37). We measured eupneic (room air) breathing and the ventilatory responses to hypoxia (12% O₂-88% N₂), hypercapnia (7% CO₂), and two levels of submaximal exercise. Primary strain differences were between BN and the other strains. BN rats had a …

Angiotensin Ii And Vegf Are Involved In Angiogenesis Induced By Short-Term Exercise Training, Sandra L. Amaral, Paula E. Papanek, Andrew S. Greene

Exercise Science Faculty Research and Publications

Results from our laboratory have suggested a pathway involving angiotensin II type 1 (AT₁) receptors and vascular endothelial growth factor (VEGF) in angiogenesis induced by electrical stimulation. The present study investigated if similar mechanisms underlie the angiogenesis induced by short-term exercise training. Seven days before training and throughout the training period, male Sprague-Dawley rats received either captopril or losartan in their drinking water. Rats underwent a 3-day treadmill training protocol. The tibialis anterior and gastrocnemius muscles were harvested under anesthesia and lightly fixed in formalin (vessel density) or frozen in liquid nitrogen (VEGF expression). In controls, treadmill training …

The Effects Of A Functional Derotational Knee Brace On The Single-Leg Hop, Timed-Hop, And Stability Of Ncaa Division Ii Athletes, Heidi E. Moran

Theses, Dissertations and Capstones

Functional knee braces are often used by athletes following an injury to their anterior cruciate ligament (ACL). However, few athletes are given information as to whether the knee brace will hinder their ability. The purpose of this study was to examine the effects of a functional derotational knee brace on the single leg hop for distance, timed hop, and overall stability index of athletes. Twelve healthy knees were tested with and with out an off-the-shelf DonJoy Legend knee brace. A matched T-test showed a significant difference between the single leg hop (T = 2.71, p<.05) and timed hop (T=3.23, p<.05) while wearing the knee brace. There was no significance found when examining the stability index while wearing the brace. It was concluded that the functional knee brace decreased the distance of a single leg hop and increased the time it took to perform a timed hop.

The Effects Of A Downhill Skiing Program On Standing Balance In Adults And Children With Various Disabilities, Colleen Kavanaugh, Tara Mcnabb, Tami Revett

Masters Theses

The purpose of this study was to assess possible improvements in balance following a downhill ski program at Cannonsburg Ski Area. The 15 subjects' ages ranged from 7-67 and were obtained by a convenience sample of participants in the Cannonsburg Challenged Ski Association. Diagnoses of the participants included cerebral palsy, traumatic brain injury, cerebral vascular accident, hearing impaired, visually impaired, and developmentally disabled.; A pre-test, post-test design was used to assess the participants balance using the functional reach test--yardstick method. Data was analyzed by computer using the Statistical Package for the Social Sciences (SPSS). Using the t-test for paired comparisons, …

Exercise Walking For Obesity Management In Older Adult White Women, Mary I. Dallas

Masters Theses

The purpose of this study was to determine if a program of exercise walking would lead to any changes in the level of physical fitness for obese white women, aged fifty and over. Twenty-two women were recruited from three sites located in Holland, Michigan. The ten week program consisted of exercise walking three times a week for forty-five minutes at 60% to 70% maximum heart rate capacity. Subjects' weight, mean percentage of body fat, waist to hip ratio, body mass index, and the step test were found to decrease significantly between the pre- and post-test measures. As a result of …

The Effects Of An Eleven-Week Therapeutic Riding Program On Motor Skills As Measured By The Bruininks-Oseretsky Test Of Motor Proficiency, Angela M. Cripe, Angela A. Schmid

Masters Theses

The purpose of this single-case experimental design study was to determine whether or not therapeutic horseback riding was effective in improving motor skills. The subject was a 7-year-old girl with diplegic cerebral palsy. She participated in a therapeutic riding program for 11 weeks. The Bruininks-Oseretsky Test of Motor Proficiency-Short Form (BOT-SF) was administered a total of seven times (two pretests, three tests during the riding program, and two posttests). Due to the limited number of testing sessions and only having 1 subject, the results of the study are considered inconclusive. However, based on visual analyses of graphs, some improvements in …

Isokinetic Shoulder Strength Of Women Softball Players: A Pilot Study, Karen A. Kuffel, Diane J. Potter

Masters Theses

The purpose of this pilot study was to provide isokinetic shoulder strength data on college women softball players. Ten women ranging in age from 18 to 21 years old were tested. The Cybex II+, U.B.X.T. and HUMAC system were utilized to test the strength of external rotators, internal rotators, horizontal abductors, and horizontal adductors at 90, 180, and 300 deg/sec. Mean peak torque values were consistently greater in the dominant arm but there were no statistically significant differences in agonist to antagonist ratios between arms. The ratios of external rotators to internal rotators were consistently 2:3 while the ratios of …