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The Effect Of Heel Height On Frontal Plane Joint Moments, Impact Accelertion, And Shock Attenuation During Walking, Danielle Barkema 2010 Iowa State University

The Effect Of Heel Height On Frontal Plane Joint Moments, Impact Accelertion, And Shock Attenuation During Walking, Danielle Barkema

Graduate Theses and Dissertations

Wearing high heels alters walking kinematics and kinetics and can create potentially adverse effects on the body. Our purpose was to determine how heel height affects frontal plane joint moments at the hip, knee, and ankle, with a specific focus on the external knee moment due to its importance in medial loading and knee osteoarthritis. In addition, this study examined the effect of heel height on impact acceleration of tibia and head and shock attenuation of the body. Fifteen women completed overground walking trials in three different heel height conditions (1, 5, and 9 cm) for a fixed walking speed ...


Mediolateral Stability During Gait In People With Parkinson's Disease, Sudeshna Aloke Chatterjee 2010 Iowa State University

Mediolateral Stability During Gait In People With Parkinson's Disease, Sudeshna Aloke Chatterjee

Graduate Theses and Dissertations

Gait control is a clinical problem in people with Parkinson's disease (PD). Gait variability leading to instability is commonly measured using spatio-temporal variables like step length, step time, step width and cadence. Another measurement that provides information about directional instability is harmonic ratios (HRs). The purpose of this study was to examine the relationship between step width and mediolateral stability using HRs in people with Parkinson's disease (n = 19) and age matched controls (n = 19). The participants walked at their preferred pace and then with a wider step width and narrower step width. The results showed that the ...


Age- And Speed-Related Differences In Walking Smoothness, Kristin Ann Lowry 2010 Iowa State University

Age- And Speed-Related Differences In Walking Smoothness, Kristin Ann Lowry

Graduate Theses and Dissertations

Extensive literature documents age-related differences in spatiotemporal variables during gait. Recent efforts have focused on upper body control and balance during gait. Harmonic ratios, derived from trunk acceleration signals, measure smoothness of motion, and are an indication of dynamic balance during gait. Limited and conflicting information exists regarding the effect of walking speed on harmonic ratios, as well as age-related differences. This research extends previous literature by: 1) examining harmonic ratios across a range of self-selected speeds in young adults; 2) comparing harmonic ratios at preferred speed in young adults, healthy 60-year-olds, and healthy 80-year-olds; and 3) comparing harmonic ratios ...


The Blunted Insulin Release After Exercise And The Relationship With Gastric Inhibitory Polypeptide And Glucagon-Like Peptide-1, Alison Rae Glidden 2010 Iowa State University

The Blunted Insulin Release After Exercise And The Relationship With Gastric Inhibitory Polypeptide And Glucagon-Like Peptide-1, Alison Rae Glidden

Graduate Theses and Dissertations

Introduction: During exercise training, an increase in insulin sensitivity is accompanied by a decrease in plasma insulin concentrations during an oral glucose tolerance test (OGTT). The purpose of this study was to investigate the role incretin hormones play in the blunted insulin release after exercise. Gastric inhibitory polypeptide (GIP) and Glucagon-like peptide-1 (GLP-1) are incretin hormones that cause insulin release after glucose ingestion. We hypothesized that insulin, GLP-1, and GIP concentrations during an OGTT would be lower after exercise compared to after 7 days of inactivity. Methods: Nine healthy men (n = 5) and women (n = 4) currently engaged in endurance ...


Energy Expenditure Of Structural Firefighters During A Typical Work Shift, Kimberly J. Affeldt 2010 Ithaca College

Energy Expenditure Of Structural Firefighters During A Typical Work Shift, Kimberly J. Affeldt

Ithaca College Theses

This study examined the energy expenditure and heart rate of structural firefighters. Subjects included nine (N=9) full-time firefighters from Ithaca, NY, ranging in age from 21-48 years. All subjects completed four test days. Test day 1 included measurement of VO2max and anthropometric data. During test days 2-4, activity count to estimate energy expenditure (EE) and heart rate (HR) were measured simultaneously using an Actiheart Monitor. During each shift (test days 2-4), subjects were required to document all activity at 15 minute increments. Activities were subsequently classified as emergency response (ER), simulation training (ST) or other shift activities (SA ...


Manipulating The Extent Of Delayed Onset Muscle Soreness, Ankita Dubey 2010 Ithaca College

Manipulating The Extent Of Delayed Onset Muscle Soreness, Ankita Dubey

Ithaca College Theses

Purpose: The purpose of study was to determine if three discrete levels of soreness can be identified using various magnitudes of eccentric triceps exercise in non-resistance trained, college-aged students. Methods: Male (n=12) and female (n=12) subjects were recruited and randomly assigned to a 20-, 40-, or 60-repetition group (n=8). Subjects performed maximal eccentric triceps contraction at 90''s-1 on a Cybex isokinetic dynamometer. Measurement of peak torque (PT), arm circumference (2, 6, and 9 cm), relaxed arm angle (RANG), elbow range of motion (ROM), descriptor differential scale (DDS) (sensation and unpleasantness), and creatine kinase (CK) were done ...


Development Of Lower Extremity Injury Criteria And Biomechanical Surrogate To Evaluate Military Vehicle Occupant Injury During An Explosive Blast Event, Brian J. Mckay 2010 Wayne State University

Development Of Lower Extremity Injury Criteria And Biomechanical Surrogate To Evaluate Military Vehicle Occupant Injury During An Explosive Blast Event, Brian J. Mckay

Wayne State University Dissertations

Anti-vehicular (AV) landmines and improvised explosive devices (IED) have accounted for more than half of the United States military hostile casualties and wounded in Operation Iraqi Freedom (OIF). The lower extremity is the predominantly injured body region following an AV mine or IED blast accounting for 26 percent of all combat injuries in OIF (Owens et al., 2007). Detonations occurring under the vehicle transmit high amplitude and short duration axial loads onto the foot-ankle-tibia region of the occupant causing injuries to the lower leg. The current effort was initiated to develop lower extremity injury criteria and biofidelic biomechanical surrogate to ...


Philosophy Of Sport In Latin America, Cesar R. Torres, Daniel G. Campos 2010 The College at Brockport

Philosophy Of Sport In Latin America, Cesar R. Torres, Daniel G. Campos

Kinesiology, Sport Studies and Physical Education Faculty Publications

The purpose of this paper is to explore the evolution of the philosophical analysis of sport in Latin America from the nineteenth century to the present. To do so, this paper identifies the main themes and the leading works that emerged throughout this period as well as their relation to regional philosophical traditions. Likewise, to situate the philosophical analysis of sport in Latin America in a broader perspective, this paper makes reference to its relation to the philosophy of sport in parts of the English-speaking world and the Iberian Peninsula (Portugal and Spain). This paper also includes an account of ...


The Emotional Reactions To Challenging Behavior Scale-Korean (Ercbs-K): Modification And Validation, Hyun-Kyoung Oh, Dong-Chul Seo, Francis M. Kozub 2010 California State University - San Bernardino

The Emotional Reactions To Challenging Behavior Scale-Korean (Ercbs-K): Modification And Validation, Hyun-Kyoung Oh, Dong-Chul Seo, Francis M. Kozub

Kinesiology, Sport Studies and Physical Education Faculty Publications

The purpose of this study was to explore the original version of Mitchell and Hastings's (1998) Emotional Reaction to Challenging Behavior Scale (ERCBS) and estimate validity and reliability of a revised version containing 29 items. The Emotional Reaction to Challenging Behavior Scale-Korean (ERCBS-K) was studied using 445 in-service physical educators (228 females; 217 males). Data were collected using onsite administration as well as mail survey administration procedures. Confirmatory and exploratory factor analyses results supported a five factor, 28-item scale (ERCBS-K). Acceptable internal consistency coefficients were found for each of the subscales of the ERCBS-K (Cronbach's alpha ranged from ...


Differences In Bone Mineral Density Among Adolescent Female Tennis Players And Non-Tennis Players, Kevser Ermin 2010 University of Mississippi

Differences In Bone Mineral Density Among Adolescent Female Tennis Players And Non-Tennis Players, Kevser Ermin

Electronic Theses and Dissertations

Approximately 10 million Americans have osteoporosis. Physical activity (PA) is an important step in preventing osteoporosis and is one of the major determinants of peak bone mass during adolescence. However, type of pa plays an important role when examining the effects of pa on bone mineral density (BMD). Purpose: 1) to determine the differences in BMD among adolescent female tennis players (TP) and non-tennis players (NTP); 2) to determine the differences in body composition (BC) between adolescent female TP and NTP; 3) to determine whether BC variables (weight, fat mass, and lean mass) were predictive of differences in BMD; and ...


The Effect Of Concurrent Activation Potentiation On The Knee Extensor And Flexor Performance Of Men And Women, Luke Garceau, Erich Petushek, McKenzie Fauth, William Ebben 2010 Marquette University

The Effect Of Concurrent Activation Potentiation On The Knee Extensor And Flexor Performance Of Men And Women, Luke Garceau, Erich Petushek, Mckenzie Fauth, William Ebben

Exercise Science Faculty Research and Publications

This study evaluated the effect of remote voluntary contractions (RVC) during isometric and isokinetic knee flexion and extension tests and evaluated gender differences therein. Subject peak torque, rate of torque development, and power were assessed with a dynamometer in RVC and no RVC’s conditions. A two way mixed ANOVA with repeated measures for condition was used to evaluate the interaction between conditions and gender, and to assess the main effects. Main effects were evaluated with a paired samples t-test. Results revealed a significant interaction between all but one test condition and gender as well as significant main effects for ...


Dynamic Stabilization During The Landing Phase Of Plyometric Exercises, Erich Petushek, Luke Garceau, Tyler VanderZanden, Brad Wurm, Christina Feldmann, William Ebben 2010 Northern Michigan University

Dynamic Stabilization During The Landing Phase Of Plyometric Exercises, Erich Petushek, Luke Garceau, Tyler Vanderzanden, Brad Wurm, Christina Feldmann, William Ebben

Exercise Science Faculty Research and Publications

This study examined the differences in and the reliability of time to stabilization (TTS) of several plyometric exercises. Twenty six men performed a variety of plyometric exercises representing a continuum of intensities of landing instability, including line hops, cone hops, squat jumps, tuck jumps, countermovement jumps, dumbbell countermovement jumps, and single leg countermovement jumps on a force platform. A repeated measures ANOVA with Bonferroni post hoc corrections was used to evaluate the differences in TTS between plyometric exercises. Practitioners who use plyometrics to train dynamic stability and balance should create programs that progress the intensity of the exercises based on ...


Antagonist Conditioning Contractions Impair Agonist Functioning, Luke Garceau, Aaron Gray, McKenzie Fauth, Phillip Hanson, Brittni Hsu, Tejin Yoon, Chris Szalkowski, Brittney Lutsch, William Ebben 2010 Marquette University

Antagonist Conditioning Contractions Impair Agonist Functioning, Luke Garceau, Aaron Gray, Mckenzie Fauth, Phillip Hanson, Brittni Hsu, Tejin Yoon, Chris Szalkowski, Brittney Lutsch, William Ebben

Exercise Science Faculty Research and Publications

This study assessed the effect of antagonist conditioning contractions (ACC) on the subsequent force and electromyography of an agonist. Twelve subjects performed isokinetic elbow flexion on a dynamometer in 4 test conditions including a baseline condition without, and 1, 3 and 6 seconds after, isometric triceps extension. Average peak torque (T), peak torque/body weight (T:BW), average power (P), and rate of torque development (RTD) were assessed. Electromyographic data were obtained from elbow extensors and flexors. A repeated measures ANOVA with post hoc analysis demonstrated that T, T:BW, P, and RTD were higher in the baseline, compared to ...


The Effect Of Concurrent Activation Potentiation During Fast Stretch Shortening Cycle Activity, Erich Petushek, Luke Garceau, William Ebben 2010 Northern Michigan University

The Effect Of Concurrent Activation Potentiation During Fast Stretch Shortening Cycle Activity, Erich Petushek, Luke Garceau, William Ebben

Exercise Science Faculty Research and Publications

This study evaluated the effect of remote voluntary contractions (RVC) on depth jump performance. Subjects performed the depth jump in a RVC condition and a condition without RVC (NO-RVC). Ground reaction force (GRF), impulse (I), and reactive strength index (RSI) were assessed with a force platform. Data were analyzed using a two way ANOVA. Analysis of GRF showed no significant main effects for RVC condition (p = 0.46) and no interaction for RVC condition and gender (p = 0.11). Analysis of I showed no significant main effects for RVC condition (p = 0.99) and no interaction for RVC condition and ...


The Acute Time Course Of Concurrent Activation Potentiation, Luke Garceau, Erich Petushek, McKenzie Fauth, William Ebben 2010 Marquette University

The Acute Time Course Of Concurrent Activation Potentiation, Luke Garceau, Erich Petushek, Mckenzie Fauth, William Ebben

Exercise Science Faculty Research and Publications

This study evaluated the acute time course of the ergogenic effect of concurrent activation potentiation (CAP). Forty-two men and women, including CAP non-responders and responders, performed a 5 second isometric knee extension on a dynamometer with the use of remote voluntary contractions (RVC). Mean torque was assessed in seven 500 millisecond (ms) time periods. A two-way repeated measures ANOVA revealed significant main effects for time period (p ≤ 0.001), but no significant interaction between time period and CAP non-responders and responders (p > 0.05). The ergogenic effects of CAP are accrued during the first 1000ms. Concurrent activation potentiation responders produce ...


Electromyographic Analysis Of Trunk Muscle Activation During A Throwing Pattern Following Rotator Cuff Mobilization, Aubrey L. Doede 2010 Claremont McKenna College

Electromyographic Analysis Of Trunk Muscle Activation During A Throwing Pattern Following Rotator Cuff Mobilization, Aubrey L. Doede

CMC Senior Theses

Correct muscular activation of the body segments during an overhand throw is achieved when movement originates in the larger and more proximal legs and trunk and moves sequentially to the smaller, distal segments of the shoulder and arm. This sequence permits angular velocity to transfer progressively through the throw as part of an open kinetic chain. The athlete can summate angular velocity and segmental forces only if he is able to create a separation between the body segments during the movement pattern, and this separation is thus essential to effective segmental sequencing for activation of the trunk muscles to occur ...


Use Of Near-Infrared Light To Reduce Symptoms Associated With Restless Legs Syndrome In A Woman: A Case Report, Ulrike H. Mitchell 2010 Brigham Young University

Use Of Near-Infrared Light To Reduce Symptoms Associated With Restless Legs Syndrome In A Woman: A Case Report, Ulrike H. Mitchell

Faculty Publications

Introduction: We describe a potential new treatment option for patients suffering from restless legs syndrome. Contemporary treatment for restless legs syndrome consists mostly of dopaminergic drugs that leave some patients feeling nauseated and dizzy. A non-invasive, drug-free option would open new doors for patients suffering from restless legs syndrome. Case presentation: A 69-year-old Caucasian woman met International Restless Legs Syndrome Study Group criteria for the diagnosis of restless legs syndrome. She had been afflicted with restless legs syndrome for over 30 years and tried many of the available pharmaceutical remedies without success. For this study she received 30-minute treatment sessions ...


Predictors Of Future Falls In Parkinson Disease [Accepted Manuscript], G. K. Kerr, C. J. Worringham, M. H. Cole, P. F. Lacherez, J. M. Wood, P. A. Silburn 2010 Australian Catholic University

Predictors Of Future Falls In Parkinson Disease [Accepted Manuscript], G. K. Kerr, C. J. Worringham, M. H. Cole, P. F. Lacherez, J. M. Wood, P. A. Silburn

Faculty of Health Sciences Publications

Background: Falls are a major health and injury problem for people with Parkinson disease (PD). Despite the severe consequences of falls, a major unresolved issue is the identification of factors that predict the risk of falls in individual patients with PD. The primary aim of this study was to prospectively determine an optimal combination of functional and disease-specific tests to predict falls in individuals with PD.

Methods: A total of 101 people with early-stage PD undertook a battery of neurologic and functional tests in their optimally medicated state. The tests included Tinetti, Berg, Timed Up and Go, Functional Reach, and ...


Dynamic Acromiohumeral Interval Changes During Scapular Plane Arm Motions, Melissa Deen Thompson 2010 Louisiana State University and Agricultural and Mechanical College

Dynamic Acromiohumeral Interval Changes During Scapular Plane Arm Motions, Melissa Deen Thompson

LSU Doctoral Dissertations

This purpose of this dissertation is to explore changes in the acromiohumeral interval during dynamic motion in the scapular plane. All of the experiments were completed in the Football Operations Athletic Training Room at Louisiana State University. The first experiment which investigated dynamic acromiohumeral interval changes in baseball players during a loaded and unloaded scaption exercise from 0°-75°, has been accepted for publication by the Journal of Shoulder and Elbow Surgery (in press, 2010). The mean acromiohumeral interval (AHI) for unloaded and loaded scaption decreased significantly (p<.001) from the arm at the side until 45° and loaded scaption narrowed AHI at 60° (p=.005) and 75° (p=.003). The second experiment investigates AHI and scapular upward rotation (SUR) changes in baseball and softball players during scaption exercises from 0°-75°. Significant load related narrowing of the AHI at 45°(p=.005), 60°(p=.001), and 75°(p<.001) and a significant load-position interaction (p=.001) at 0° and 75°was observed for all subjects. No gender differences in SUR or AHI were found. AHI and SUR displayed moderate positive correlations at 30° for both the unloaded scaption (r=.648, p=.001) and the loaded scaption (r=.445, p=.038) however, no significant relationships were present at 0°, 45°, 60° or 75°. The third experiment compared dynamic acromiohumeral interval and scapulohumeral rhythm changes in trained and untrained females during scaption exercises from 0°-90°. In general, AHI was maximal with the arm at the side and declined significantly (p<.001) during arm elevation until 60°, but increased significantly (p<.001) between 60° and 90°. Significant load related narrowing of the AHI at all positions (p<.05), a more negative SUR at 0° (p<.001) and a more positive SUR at 90° (p=.009) was observed for all subjects. Female athletes had significantly stronger external rotators (p<.001), larger overall AHI (p=.003) and more SUR (p=.008) than untrained females. Significant positive correlations (p<.05) between AHI and SUR were observed at 0°, 30°, and 60° during both loaded and unloaded scaption.


The Correlates Of Physical Activity In Rural And Urban Older Adults, Arjun Hariharan 2010 Iowa State University

The Correlates Of Physical Activity In Rural And Urban Older Adults, Arjun Hariharan

Graduate Theses and Dissertations

Introduction: Regular physical activity (PA) has been shown to be beneficial. A lower percentage of rural compared to urban/metropolitan older adults participate in PA. Maintaining desired amounts of PA among elderly individuals with limited access to community and health care facilities and other psychological and environmental barriers is critical to public health . Thus, the purpose of this study was to determine the individual, psychological and perceived environmental barriers and their correlation with PA in rural and urban older adults.

Methodology: After approval from the Institutional Review Board at Iowa State University, 150 survey questionnaires were distributed to older adults ...


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