Medicine and Health Sciences Commons^™

Identifying Trippers And Non-Trippers Based On Knee Kinematics During Obstacle-Free Walking, Lauren C. Benson, Stephen C. Cobb, Allison S. Hyngstrom, Kevin G. Keenan, Jake Luo, Kristian M. O'Connor

Physical Therapy Faculty Research and Publications

Trips are a major cause of falls. Sagittal-plane kinematics affect clearance between the foot and obstacles, however, it is unclear which kinematic measures during obstacle-free walking are associated with avoiding a trip when encountering an obstacle. The purpose of this study was to determine kinematic factors during obstacle-free walking that are related to obstacle avoidance ability. It was expected that successful obstacle avoidance would be associated with greater peak flexion/dorsiflexion and range of motion (ROM), and differences in timing of peak flexion/dorsiflexion during swing of obstacle-free walking for the hip, knee and ankle. Three-dimensional kinematics were recorded as 35 participants …

Swallow Strength Training Exercise For Elderly: A Health Maintenance Need, D. Agrawal, Mark Kern, F. Edeani, Gokulakrishnan Balasubramanian, Allison S. Hyngstrom, Patrick Sanvanson, Rita Shaker

Physical Therapy Faculty Research and Publications

Background: Recent studies have shown high prevalence of oropharyngeal dysphagia associated with frailty‐ and age‐related muscle weakness. Strength training exercises have been advocated for locomotive health maintenance in the elderly and have shown positive outcomes. As muscles involved in oropharyngeal phase of swallowing are also comprised of striated muscles, the aim of this study was to determine biomechanical effect of a novel resistance exercise program, Swallowing Against Laryngeal Restriction (SALR), on pharyngeal phase swallowing in the healthy elderly. Methods: A total of 28 volunteers (75 + 7 years; 17 females) with no complaint of dysphagia were studied using video fluoroscopy …

Experience Of Robotic Exoskeleton Use At Four Spinal Cord Injury Model Systems Centers, Allen W. Heinemann, Arun Jayaraman, Chaithanya K. Mummidisetty, Jamal Spraggins, Daniel Pinto, Susan Charlifue, Candy Tefertiller, Heather B. Taylor, Shuo-Hsiu Chang, Argyrios Stampas, Catherine L. Furbish, Edelle C. Field-Fote

Physical Therapy Faculty Research and Publications

Background and Purpose: Refinement of robotic exoskeletons for overground walking is progressing rapidly. We describe clinicians' experiences, evaluations, and training strategies using robotic exoskeletons in spinal cord injury rehabilitation and wellness settings and describe clinicians' perceptions of exoskeleton benefits and risks and developments that would enhance utility.

Methods: We convened focus groups at 4 spinal cord injury model system centers. A court reporter took verbatim notes and provided a transcript. Research staff used a thematic coding approach to summarize discussions.

Results: Thirty clinicians participated in focus groups. They reported using exoskeletons primarily in outpatient and wellness settings; 1 center used …

Knee Extensor Fatigability During Different Resistance Exercise Protocols In Young And Old Adults, Jose Delgadillo

Master's Theses (2009 -)

Aging is associated with decreased muscle strength, power, and contraction velocity, and increased fatigability of the lower limb muscles during dynamic contractions. The aims of this thesis were to compare young in and old men and women in: (1) fatigability of the knee extensors for two types of dynamic fatiguing protocols that are the basis of resistance training protocols, and (2) the central and peripheral mechanisms of fatigue during the two types of dynamic fatiguing protocols. Twenty young (19-24, 22.2 ± 1.3 years, men = 10) and twenty old adults (64-85, 73.8 ± 5.4, men = 10) performed: two different …

Locomotor Adaptations To Prolonged Step-By-Step Frontal Plane Trunk Perturbations In Young Adults, Eric R. Walker, Allison S. Hyngstrom, Tanya Onushko, Brian D. Schmit

Physical Therapy Faculty Research and Publications

The purpose of this study was to quantify the magnitude and time course of dynamic balance control adaptations to prolonged step-by-step frontal plane forces applied to the trunk during walking. Healthy young participants (n = 10, 5 female) walked on an instrumented split-belt treadmill while an external cable-driven device applied frontal plane forces to the trunk. Two types of forces were applied: 1) forces which accentuated COM movement in the frontal plane (destabilizing) and 2) forces which resisted COM movement in the frontal plane (stabilizing). We quantified dynamic balance control using frontal plane measures of (1) the extent of center …

Lean Mass Mediates The Relation Between Temporal Summation Of Pain And Sex In Young Healthy Adults, Abdulaziz Awali, Ali Alsouhibani, Marie K. Hoeger Bement

Physical Therapy Faculty Research and Publications

Background

Previous studies have shown that women experience greater temporal summation (TS) of pain than men using a repetitive thermal stimulus. These studies, however, did not individualize the thermal stimulus to each subject’s thermal pain sensitivity. The aim of this study was to investigate sex differences in TS using an individualized protocol and potential mediators that have been shown to influence TS including physical activity and body composition.

Methods

Fifty young healthy men and women (21 men) participated in the study. Subjects completed TS testing on the right forearm using a repetitive thermal stimulus at a temperature that the subject …

Exercise-Induced Pain And Analgesia? Underlying Mechanisms And Clinical Translation, Kathleen A. Sluka, Laura Frey-Law, Marie K. Hoeger Bement

Physical Therapy Faculty Research and Publications

No abstract provided.

Phase-Iii, Randomized Controlled Trial Of The Behavioral Intervention For Increasing Physical Activity In Multiple Sclerosis: Project Bipams, Robert W. Motl, Brian M. Sandroff, Brooks C. Wingo, Justin Mccroskey, Lara A. Pilutti, Gary R. Cutter, Rachel Bollaert, Edward Mcauley

Exercise Science Faculty Research and Publications

Background

We propose a phase-III, randomized controlled trial (RCT) that examines the effectiveness of a behavioral intervention based on social cognitive theory (SCT) and delivered through the Internet using e-learning approaches for increasing physical activity and secondary outcomes (e.g., symptoms) in a large sample of people with multiple sclerosis (MS) residing throughout the United States.

Methods/design

The proposed phase-III trial will use a parallel group, RCT design that examines the effect of a 6-month behavioral intervention for increasing physical activity and secondarily improving mobility, cognition, symptoms, and quality of life (QOL) in persons with MS. The primary outcome is accelerometer-measured …

Change In Bone Mineral Density Among High Frequency Apheresis Blood Donors, Walter Bialkowski

Dissertations (1934 -)

Exposure to citrate anticoagulant during apheresis blood donation induces significant decreases in serum ionized calcium with subsequent perturbations to parathyroid hormone, vitamin D, and markers of bone remodeling. Cross-sectional studies of bone mineral density (BMD) among apheresis donors exhibit conflicting results. Resolving the potential impact of the highest apheresis donation frequency represents a significant knowledge gap in ensuring adequate protections for volunteer apheresis blood donors. ALTRUYST (NCT02655055) was a randomized, longitudinal, controlled clinical trial designed to determine if repeated exposure to citrate through apheresis donation reduces BMD. Male donors, 18-65 years of age with no more than five previous apheresis …

Total Energy Expenditure And Body Composition Of Children With Developmental Disabilities, Michele L. Polfuss, Kathleen J. Sawin, Paula E. Papanek, Linda Bandini, Bethany Forseth, Andrea Moosreiner, Kimberley Zvara, Dale A. Schoeller

Exercise Science Faculty Research and Publications

Background

Obesity prevalence is increased in children with developmental disabilities, specifically in children with spina bifida and Down syndrome. Energy expenditure, a critical aspect of weight management, has been extensively studied in the typically developing population, but not adequately studied in children with developmental disabilities.

Objective

Determine energy expenditure, fat-free mass and body fat percentile and the impact of these findings on recommended caloric intake in children with spina bifida and Down syndrome.

Methods/Measures

This pilot study included 36 children, 18 with spina bifida, 9 with Down syndrome and 9 typically developing children. Half of the children with spina bifida …

Motor Compensation During Lower Limb Pedaling After Stroke, Brice Thomas Cleland

Dissertations (1934 -)

Long-term motor dysfunction in the lower limb is common after stroke. One potential contributor is motor compensation, a behavior in which functions originally performed by the paretic limb are performed by the non-paretic limb. Compensation in chronic stroke may contribute to long-term motor dysfunction by limiting functional ability, impairing future recovery, and eliciting maladaptive neuroplasticity. The purpose of this dissertation was to describe the impact of compensation on motor function and brain activation during lower limb pedaling and identify elements that produce this behavior. To achieve this purpose, we evaluated muscle activation and motor performance when compensation was prevented. During …

Ischemic Conditioning Increases Strength And Volitional Activation Of Paretic Muscle In Chronic Stroke: A Pilot Study, Allison S. Hyngstrom, Spencer A. Murphy, Jennifer Nguyen, Brian D. Schmit, Francesco Negro, David D. Gutterman, Matthew J. Durand

Physical Therapy Faculty Research and Publications

Ischemic conditioning (IC) on the arm or leg has emerged as an intervention to improve strength and performance in healthy populations, but the effects on neurological populations are unknown. The purpose of this study was to quantify the effects of a single session of IC on knee extensor strength and muscle activation in chronic stroke survivors. Maximal knee extensor torque measurements and surface EMG were quantified in 10 chronic stroke survivors (>1 yr poststroke) with hemiparesis before and after a single session of IC or sham on the paretic leg. IC consisted of 5 min of compression with a …

Sex Differences In Mechanisms Of Recovery After Isometric And Dynamic Fatiguing Tasks, Jonathon Senefeld, Hugo M. Pereira, Nicholas Elliott, Tejin Yoon, Sandra K. Hunter

Exercise Science Faculty Research and Publications

Purpose The purpose of this study was to determine whether supraspinal mechanisms contribute to the sex difference in fatigability during and recovery from a dynamic and isometric fatiguing task with the knee extensors.

Methods: Transcranial magnetic stimulation and electrical stimulation were used to determine voluntary activation and contractile properties of the knee extensors in 14 men and 17 women (20.8 ± 1.9 yr) after a 1) 60-s sustained, maximal voluntary isometric contraction (MVIC), and 2) dynamic fatiguing task involving 120 maximal voluntary concentric contractions with a 20% MVIC load.

Results: There were no differences between men and women in the …

Systemic Exercise-Induced Hypoalgesia Following Isometric Exercise Reduces Conditioned Pain Modulation, Ali Alsouhibani, Henrik Bjarke Vaegter, Marie K. Hoeger Bement

Physical Therapy Faculty Research and Publications

Objective

Physically active individuals show greater conditioned pain modulation (CPM) compared with less active individuals. Understanding the effects of acute exercise on CPM may allow for a more targeted use of exercise in the management of pain. This study investigated the effects of acute isometric exercise on CPM. In addition, the between-session and within-session reliability of CPM was investigated.

Design

Experimental, randomized crossover study.

Setting

Laboratory at Marquette University.

Subjects

Thirty healthy adults (19.3±1.5 years, 15 males).

Methods

Subjects underwent CPM testing before and after isometric exercise (knee extension, 30% maximum voluntary contraction for three minutes) and quiet rest in …

A Randomized Trial Of A Motivational Interviewing Intervention To Increase Lifestyle Physical Activity And Improve Self-Reported Function In Adults With Arthritis, Abigail L. Gilbert, Jungwha Lee, Linda S. Ehrlich-Jones, Pamela A. Semanik, Jing Song, Christine A. Pellegrini, Daniel Pinto, Dorothy D. Dunlop, Rowland W. Chang

Physical Therapy Faculty Research and Publications

Background

Arthritis is a leading cause of chronic pain and functional limitations. Exercise is beneficial for improving strength and function and decreasing pain. We evaluated the effect of a motivational interviewing-based lifestyle physical activity intervention on self-reported physical function in adults with knee osteoarthritis (KOA) or rheumatoid arthritis (RA).

Methods

Participants were randomized to intervention or control. Control participants received a brief physician recommendation to increase physical activity to meet national guidelines. Intervention participants received the same brief baseline physician recommendation in addition to motivational interviewing sessions at baseline, 3, 6, and 12 months. These sessions focused on facilitating individualized …

A Randomized, Controlled Clinical Study To Assess The Effect Of Anodal And Cathodal Electrical Stimulation On Periwound Skin Blood Flow And Pressure Ulcer Size Reduction In Persons With Neurological Injuries, Anna Polak, Cezary Kucio, Luther C. Kloth, Malgorzata Paczula, Ewa Hordynska, Tomasz Ickowicz, Edward Blaszczak, Ewa Kucio, Krystian Oleszczyk, Krzysztof Ficek, Andrzej Franek

Physical Therapy Faculty Research and Publications

The use of electrical stimulation (ES) should be considered for treating nonhealing pressure ulcers (PUs), but optimal ES wound treatment protocols have yet to be established. A randomized, controlled, double-blind clinical study was conducted to evaluate the effects of cathodal and anodal high-voltage monophasic pulsed current (HVMPC) on periwound skin blood flow (PSBF) and size reduction of Stage 2 to Stage 4 PUs of at least 4 weeks’ duration.Persons >18 years of age, hospitalized with neurological injuries, at high risk for PU development (Norton scale <14 >points; Waterlow scale >15 points), and with at least 1 Stage 2 to Stage 4 …