Musculoskeletal System Commons^™

Autistic Young Adults' Experiences And Recommendations For Strength Training, Ashlyn Barry, Justin A. Haegele, Daniel Schaefer, Kristen A. Pickett, Luis Columna

Human Movement Studies & Special Education Faculty Publications

Strength training can be a beneficial form of physical activity (PA), but little research has examined how autistic individuals experience it or what makes programs accessible and supportive. Therefore, the purpose of this study was twofold: (1) to explore autistic young adults’ experiences with strength training, and (2) examine their recommendations for designing programs that meet their needs. Thirteen autistic young adults (ages 22–25) participated in semi-structured interviews about their strength training experiences and preferences for program design. A qualitative descriptive approach with a constructivist lens guided reflexive analysis. Participants described key factors that influenced their participation in strength training, …

The Influence Of Shoe And Cleat Type On Lower Extremity Muscle Activation In Youth Baseball Pitchers, Jacob R. Gdovin, Chip Wade, Lauren A. Luginsland, Charles C. Williams, Riley Galloway, John C. Garner

Human Movement Studies & Special Education Faculty Publications

Background: Baseball pitching is a dynamic movement where the lower extremities generate and sequentially transfer energy to the upper extremities to maximize ball velocity. The need for lower body muscular strength to produce adequate push-off and landing forces has been documented; however, the influence footwear and surface inclination has on muscle activation remains unknown.

Objectives: Determine how pitching in molded cleats and turf shoes from a pitching mound and flat ground affects stride-leg muscle activation in youth baseball pitchers while determining percent activation during each pitching phase.

Methods: Cross – sectional study analyzing mean muscle activity and percent activation of …

Wearing Knee Sleeves During Back Squats Does Not Improve Mass Lifted Or Affect Knee Biomechanics, Hunter J. Bennett, Alexandria Trypuc, Kevin A. Valenzuela, Zachary A. Sievert

Human Movement Studies & Special Education Faculty Publications

Purpose:
Knee sleeves have become widely popular in the exercise realm, especially for knee support during back squats. Knee sleeves are successful in providing frontal plane knee support during functional tasks, but have not been investigated in back squats. Knee wraps, a somewhat similar elastic material, provide elastic energy that increases weight lifted during back squats. Thus, it is possible the thick neoprene knee sleeves could prove advantageous for back squats. The purpose of this study was to examine the effects of knee sleeves on weight lifted, knee biomechanics, and muscle activations during back squats.

Methods:
Fifteen resistance trained men …

The Influence Of Sonographer Experience On Skeletal Muscle Image Acquisition And Analysis, Joshua C. Carr, Gena R. Gerstner, Caleb C. Voskuil, Joel E. Harden, Dustin Dunnick, Kristin M. Badillo, Jason I. Pagan, Kylie K. Harmon, Ryan M. Girts, Jonathan P. Beausejour, Matt S. Stock

Human Movement Studies & Special Education Faculty Publications

The amount of experience with ultrasonography may influence measurement outcomes while images are acquired or analyzed. The purpose of this study was to identify the interrater reliability of ultrasound image acquisition and image analysis between experienced and novice sonographers and image analysts, respectively. Following a brief hands-on training session (2 h), the experienced and novice sonographers and analysts independently performed image acquisition and analyses on the biceps brachii, vastus lateralis, and medial gastrocnemius in a sample of healthy participants (n = 17). Test–retest reliability statistics were computed for muscle thickness (transverse and sagittal planes), muscle cross-sectional area, echo intensity and …

Walking Biomechanics And Energetics Of Individuals With A Visual Impairment: A Preliminary Report, Hunter J. Bennett, Kevin A. Valenzuela, Kristina Fleenor, Steven Morrison, Justin A. Haegele

Human Movement Studies & Special Education Faculty Publications

Purpose.

Although walking gait in sighted populations is well researched, few studies have investigated persons with visual impairments (VIs). Given the lack of physical activity in people with VIs, it is possible that reduced efficiency in walking could adversely affect activity. The purposes of this preliminary study were to (1) examine the biomechanics and energetics utilized during independent and guided walking in subjects with VIs, and (2) compare gait biomechanics between people with VIs and sighted controls.

Methods.

Three-dimensional motion capture and force platforms were used during independent and guided walking at self-selected speeds. Joint angles, moments, external work, and …

Effects Of Gait Speed Of Femoroacetabular Joint Forces, Joshua T. Weinhandl, Bobbie S. Irmisher, Zachary A. Sievert

Human Movement Studies & Special Education Faculty Publications

Alterations in hip joint loading have been associated with diseases such as arthritis and osteoporosis. Understanding the relationship between gait speed and hip joint loading in healthy hips may illuminate changes in gait mechanics as walking speed deviates from preferred. The purpose of this study was to quantify hip joint loading during the gait cycle and identify differences with varying speed using musculo skeletal modeling. Ten, healthy, physically active individuals performed walking trials at their preferred speed, 10% faster, and 10% slower. Kinematic, kinetic, and electromyographic data were collected and used to estimate hip joint force via a musculoskeletal model. …