Rehabilitation and Therapy Commons^™

Electromyographic Analysis Of Lower Extremity Muscle Activity During Wall Squats With An Adduction Contraction In Varied Foot Positions, Jill Eken, Ashlee Jesperson, Heather Sletten

Physical Therapy Scholarly Projects

Purpose: The purpose of this study was to determine if an isometric hip adduction contraction and varied foot positions during a wall squat results in increased muscle recruitment of the lower extremity.

Subjects: Eleven healthy female adult volunteers without a prior history of knee pathology participated.

Methods: Surface electromyography (EMG) data were collected from the adductor longus (AL), vastus medialis oblique (VMO), vastus lateralis (VL), biceps femoris (BF), gastrocnemius (GN) and anterior tibialis (AT) muscles of the dominant leg for each individual during six wall squats with different treatment conditions. Experimental trials included three different rotation positions with or without …

Electromyographic Data Do Not Support A Progressive Recruitment Of Muscle Fibers During Exercise Exhibiting A Vo2 Slow Component, Daniel T. Cannon, Fred W. Kolkhorst, Daniel Cipriani

Physical Therapy Faculty Articles and Research

The origin of the slow component (SC) of oxygen uptake kinetics, presenting during exercise above the ventilatory threshold (VT), remains unclear. Possible physiologic mechanisms include a progressive recruitment of type II muscle fibers. The purpose of this study was to examine alterations in muscle activity through electromyography (EMG) and mean power frequency (MPF) analysis during heavy cycling exercise. Eight trained cyclists (mean±S.E.; age=30±3 years, height=177±4 cm, weight=73.8±6.5 kg, VO2max=4.33±0.28lmin−1) completed transitions from 20 W to a workload equaling 50% of the difference between VT and VO2max. VO2 was monitored using a breath-by-breath measurement system, and EMG data were gathered from …

Influence Of A Functional Knee Brace And Exercise On Lower Extremity Kinematics During Jogging, Brian M. Campbell, Daniel Cipriani, James A. Yaggie

Physical Therapy Faculty Articles and Research

ABSTRACT Context: Functional knee braces (FKB) are used prophylactically and in rehabilitation to aide in the functional stability of the knee joint. Objective: To determine if alterations in sagittal plane lower extremity kinematics remain evident throughout a one hour period in healthy individuals. Design: 2X5 repeated measures design. Setting: Biomechanics Laboratory. Subjects: Twenty subjects (14 male and 6 female, mean age 26.5±7 yrs; height 172.4±13 cm; weight 78.6±9 kg), separated into braced (B) and no brace (NB) groups. Intervention: A one-hour exercise program divided into three 20 minute increments. Main Outcome Measures: Synchronized three-dimensional …

Visual Contributions To The Vestibulo-Ocular Reflex During Balance Recovery Tasks, Mark D. Diehl

Theses and Dissertations

Introduction: The Vestibulo-ocular reflex (VOR) is quantified by computing the ratio of head angular velocity and eye angular velocity (VOR Gain). This measure only includes head angular movements; linear translations are not accounted for. These investigations postulate an alternative method of VOR quantification, one that assesses retinal image stability during head angular and linear movements (Foveal fixation (FF)). This method was used to assess the role of vision in balance reactions. Methods: Experiment 1 : Ten Young subjects were fitted with an eye tracker linked to an EM kinematic recording system. This allowed for the recording of head, trunk and …

Competencies And Physical Agent Modalities: An Investigation Of Clinical And Ethical Implications, Casey A. Lambert

Master's Theses and Doctoral Dissertations

Occupational therapy has evolved from its early inception in diversional therapy to incorporate technologically advanced modalities into the professional domain. Over the last thirty years the profession has increasingly incorporated physical agent modalities (PAMs) into the treatment process. Throughout this process there has been both opposition and support for the inclusion of PAMs in occupational therapy. There are concerns from both sides regarding the proper training of therapists in the use of PAMs, how competency should be assessed, who is responsible for ensuring competency, and the ethical concerns with the use of these modalities.

This phenomenological study analyzed six therapists’ …

Stress And Anxiety In Adhd: Links To Sensory Over-Responsivity, Stacey E. Reynolds

Theses and Dissertations

Sensory Modulation Dysfunction (SMD) is characterized by an inability to consistently and accurately grade responses to sensory information. SMD, and specifically sensory over-responsivity (SOR), has been correlated with stress and anxiety in some developmentally delayed populations and has been associated with structures and functions of the hypothalamic-pituitary adrenal (HPA) axis. Recent attention has been given to HPA functioning in children with Attention Deficit Hyperactivity Disorder (ADHD), with a majority of studies identifying blunted or diminished cortisol patterns. In contrast, elevated cortisol has been associated with anxiety and anxious behaviors in both animal and human studies. The purpose of this study …