Kinesiology Commons^™

Knee Angle-Specific Emg Normalization: The Use Of Polynomial Based Emg-Angle Relationships, J Earp, R Newton, Prue Cormie, A Blazevich

Prue Cormie

The normalization of EMG signals to those recorded during a maximal voluntary contraction provides a valid construct for comparisons of relative muscle activity. However, the length dependence of muscle activation and purported, substantial, muscle translocation and changes in muscle architecture during dynamic movements presents a need for joint angle-dependent normalization processes. The purposes of the present study were to: (1) quantify variations in muscle activity across a large ROM, (2) determine the accuracy with which fitted EMG-joint angle curves accurately characterized these variations, and (3) compare peak (EMG-P) and average (EMG-A) EMG amplitudes obtained during a countermovement leg extension when …

Communicator, Nov. 2014, San Jose State University, Department Of Kinesiology

Communicator (Kinesiology)

Volume 27, Issue 1

Psychosocial Factors In Sports Injury Rehabilitation And Return To Play, Leslie W. Podlog, John Heil, Stefanie Podlog (Nee Schulte)

Athletic Training Collection

This article discusses the principles and practices that guide psychological intervention with injury, and encourages a psychological approach to injury for clinicians. Part 1 reviews the research literature, and serves as a foundation for the review of clinical practices in part 2. Examination of the research literature highlights 4 areas: (1) psychological factors influencing rehabilitation, (2) social factors affecting rehabilitation, (3) performance concerns among returning athletes, and (4) tools/inventories for assessing psychological readiness to return. A synopsis of an injury intervention plan is provided, and the influence of pain and fear in the rehabilitation process is described.

Kinematics And Economy Of Novel Barefoot Running, Aaron Zell, Patrick Babington

Annual Student Research Poster Session

The purpose of the study was to compare key physiological, anthropometric, and kinematic attributes between barefoot and shod runners while also comparing these variables to the running economy of their respective conditions. We hypothesize that when running in the acute barefoot condition participants will exhibit significant biomechanical, physiological, and kinematic differences compared to the shod condition that may be correlated with a superior or inferior running economy. Male (4) and female (5) test subjects (19.2±0.83 years, 171.06±6.89 cm, 71.09±14.52 kg) participated in two separate testing sessions. The first session involved collecting the weight, height, sitting height, ankle and hip widths, …

Identification Of High Responders For Interleukin-6 And Creatine Kinase Following Acute Eccentric Resistance Exercise In Elderly Obese Women, Vitor Tajra, Ramires Alsamir Tibana, Denis Cesar Leite Vieira, Darlan Lopes De Farias, Tatiane Gomes Teixeira, Silvana Schwerz Funghetto, Alessandro Oliviera Silva, Nuno Manuel Frade De Sousa, Jeffrey Willardson, Margo Gomes Oliviera Karnikowski, Jonato Prestes

Faculty Research and Creative Activity

Resistance exercise is used as a non-pharmacological tool to elicit both gains in and maintenance of physical function in the elderly. Thus, the present study examined the acute response of creatine kinase and interleukin-6 following an eccentric resistance exercise session in elderly obese women classified as high responders or normal responders.

Α1- And Α2-Adrenergic Responsiveness In Human Skeletal Muscle Feed Arteries: The Role Of Trpv Ion Channels In Heat-Induced Sympatholysis, J. R. Gifford, S. J. Ives, Song-Young Park, R. H. I. Andtbacka, John R. Hyngstrom, Michelle T. Mueller, Gerald S. Treinman, Christopher Ward, Joel D. Trinity, Russell S. Richardson

Health and Kinesiology Faculty Publications

The purpose of this study was to determine if heat inhibits α2-adrenergic vasocontraction, similarly to α1-adrenergic contraction, in isolated human skeletal muscle feed arteries (SMFA) and elucidate the role of the temperature-sensitive vanilloid-type transient receptor potential (TRPV) ion channels in this response. Isolated SMFA from 37 subjects were studied using wire myography. α1 [Phenylephrine (PE)]- and α2 [dexmedetomidine (DEX)]-contractions were induced at 37 and 39°C with and without TRPV family and TRPV4-specific inhibition [ruthenium red (RR) and RN-1734, respectively]. Endothelial function [acetylcholine (ACh)] and smooth muscle function [sodium nitroprusside (SNP) and potassium chloride (KCl)] were also assessed under these conditions. …

Identification Of High Responders For Interleukin-6 And Creatine Kinase Following Acute Eccentric Resistance Exercise In Elderly Obese Women, Vitor Tajra, Ramires Alsamir Tibana, Denis Cesar Leite Vieira, Darlan Lopes De Farias, Tatiane Gomes Teixeira, Silvana Schwerz Funghetto, Alessandro Oliviera Silva, Nuno Manuel Frade De Sousa, Jeffrey Willardson, Margo Gomes Oliviera Karnikowski, Jonato Prestes

Jeffrey Willardson

Resistance exercise is used as a non-pharmacological tool to elicit both gains in and maintenance of physical function in the elderly. Thus, the present study examined the acute response of creatine kinase and interleukin-6 following an eccentric resistance exercise session in elderly obese women classified as high responders or normal responders.

Relationship Of Dna Methylation With Cardiovascular Fitness And Body Composition, Mihaela A. Ciulei

Honors College Theses

Global DNA Methylation (GDM), an epigenomic modification has been linked to the development of cardiovascular disease and its risk factors. Our focus was to identify potential relationships between epigenetic alterations and both cardiovascular fitness and body composition measures. Purpose: As increases in aerobic fitness have a beneficial effect on cardiovascular disease, one purpose was to determine if a relationship was evident between global DNA methylation and VO2max. A secondary purpose was to determine if the relationship extends to body composition measured via Dual X-ray Absorbtometry (DXA). Methods: Fifty-two (male n=25, female n=27) subjects provided a blood sample for DNA …

Instrumented Figure Skating Blade For Measuring On-Ice Skating Forces, S A. Acuña, D M. Smith, J M. Robinson, J C. Hawks, P Starbuck, D L. King, Sarah T. Ridge, Steven Knight Charles

Faculty Publications

Competitive figure skaters experience substantial, repeated impact loading during jumps and landings. Although these loads, which are thought to be as high as six times body weight, can lead to overuse injuries, it is not currently possible to measure these forces on-ice. Consequently, efforts to improve safety for skaters are significantly limited. Here we present the development of an instrumented figure skating blade for measuring forces on-ice. The measurement system consists of strain gauges attached to the blade, Wheatstone bridge circuit boards, and a data acquisition device. The system is capable of measuring forces in the vertical and horizontal directions …

Intercollegiate Cross Country Competition: Effects Of Warm-Up And Racing On Salivary Levels Of Cortisol And Testosterone, Kathleen V. Casto, Christopher Elliott, David A. Edwards

International Journal of Exercise Science

International Journal of Exercise Science 7(4) : 318-328, 2014. Team intercollegiate athletic competition is associated with an increase in salivary cortisol (C) and testosterone (T) in men and women. The present study was designed to determine the hormonal effects of warm-up and racing in cross country runners – a sport that has both individual and team components. Members of the Emory University men’s and women’s varsity cross country teams gave saliva samples before warm-up, after warm-up, and immediately after the finish of each of two intercollegiate invitational meets held one year apart in the same setting (2010, N = 10 …

Vo2 Reserve Vs. Heart Rate Reserve During Moderate Intensity Treadmill Exercise, Tanner J. Solheim, Brad G. Keller, Charles J. Fountaine

International Journal of Exercise Science

International Journal of Exercise Science 7(4) : 311-317, 2014. ­VO₂ and heart rate (HR) are widely used when determining appropriate training intensities for clinical, healthy, and athletic populations. It has been shown that if the % reserve (%R) is used, rather than % of max, HR and VO₂ can be used interchangeably to accurately prescribe exercise intensities. Thus, heart rate reserve (HRR) can be prescribed if VO₂ reserve (VO₂R) is known. Therefore, the purpose of this study was to compare VO₂ R and HRR during moderate intensity exercise (50%R). Physically active college students …

Muscle Activity In Single- Vs. Double-Leg Squats, Bradley A. Deforest, Gregory S. Cantrell, Brian K. Schilling

International Journal of Exercise Science

International Journal of Exercise Science 7(4) : 302-310, 2014. Muscular activity, vertical displacement and ground reaction forces of back squats (BS), rear-leg elevated split squats (RLESS) and split squats (SS) were examined. Nine resistance-trained men reported for two sessions. The first session consisted of the consent process, practice, and BS 1-repetition maximum testing. In the second session, participants performed the three exercises while EMG, displacment and ground reaction force data (one leg on plate) were collected. EMG data were collected from the gluteus maximus (GMX), biceps femoris (BF), semitendinosus (ST), rectus femoris (RF), vastus lateralis (VL), vastus medialis (VM), tibialis …

Occupational Sitting And Physical Activity Among University Employees, Charles J. Fountaine, Meredith Piacentini, Gary A. Liguori

International Journal of Exercise Science

International Journal of Exercise Science 7(4) : 295-301, 2014. The prevalence of overweight and obese in the U.S. has been thoroughly documented. With the advent of inactivity physiology research and the subsequent interest in sedentary behavior, the work environment has come under closer scrutiny as a potential opportunity to reverse inactivity. Therefore, the purpose of this study was to determine the sitting and physical activity (PA) habits among different classifications of university employees. University employees (n=625) completed an online survey based on the Occupational Sitting and Physical Activity Questionnaire (OSPAQ). Participants were instructed to describe time spent sitting, standing, walking, …

Time Spent In Mvpa During Exergaming With Xbox Kinect In Sedentary College Students, Chie Yang, Zachary Wickert, Samantha Roedel, Alexandria Berg, Alex Rothbauer, Marquell Johnson, Donald Bredle

International Journal of Exercise Science

International Journal of Exercise Science 7(4) : 286-294, 2014. The primary purpose of this study was to determine the amount of time spent in moderate-to-vigorous physical activity (MVPA) during a 30-minute bout of exergaming with the Xbox Kinect game console in sedentary college-aged students. A secondary purpose was to examine enjoyment level of participation in the selected exergame. Twenty college-aged students (14 females and 6 males) who self-reported being physically inactive and having no prior experience with the Xbox Kinect game “Your Shape Fitness Evolved 2012” Break a Sweat activity participated in the study. Participants came into the lab on …

Can Resistance Training Contribute To The Aerobic Components Of The Physical Activity Guidelines?, Travis J. Hrubeniuk, Neal Prokop, Semone Myrie, Martin Sénéchal, Danielle R. Bouchard

International Journal of Exercise Science

International Journal of Exercise Science 7(4) : 278-285, 2014. To evaluate if resistance training can reach Moderate to Vigorous Intensity (MVI) and contribute to the aerobic component of the international physical activity guidelines. Sixteen participants aged between 20 and 35 were recruited. Heart rate was recorded by heart rate monitor during a resistance training program. Based on maximal heart rate, time spent at MVI (55-69% of maximal heart rate) was calculated. Participants displayed a HR equal or above MVI for 51.5% ± 21.7% of time. When stratifying by lower and upper body sessions, that proportion was median (25-75th); 75.0% (32.5%-89.2%) …

The Acute Effects Of A Dynamic Stretching Protocol On Wingate Performance, Autumn S. Gipson Ms., Jamarious Jones, Elise N. Ritchey, Colby Murphy, Hope Grimes, John M. Coons

International Journal of Exercise Science

International Journal of Exercise Science 7(4) : 271-277, 2014. Stretching before performing anaerobic activity has been a highly debated subject, with studies finding differing results depending on the type (static, dynamic, etc.) and duration of the stretch. Furthermore, the effects of dynamic stretching (DS) on anaerobic performance have been minimally researched. The purpose of this study was to examine the effects a DS protocol had on power performance using a Wingate test (WAnT). College-aged male subjects were recruited for this study. Prior to experimental trials, subjects performed a familiarity WAnT trial. Subjects then performed the WAnT two more times, once …

The Relationship Between Change Of Direction Speed In The Frontal Plane, Power, Reactive Strength, And Strength, Brian T. Mccormick, James C. Hannon, Charlie A. Hicks-Little, Maria Newton, Barry Shultz, Nicole Detling, Warren B. Young

International Journal of Exercise Science

International Journal of Exercise Science 7(4) : 260-270, 2014. Change-of-direction speed (CODS) is an important quality to performance in multi-direction sports. The relationship between CODS in the frontal plane and power, strength, and reactive strength is largely unstudied. Twenty-three male college students participated in this study. The study used a Pearson’s product-moment correlation to measure the relationship between CODS, power, strength, and reactive strength. A lateral shuffle test was used as the measure of CODS. A lateral hop for distance was used as the measure of power in the frontal plane. A countermovement vertical jump test was used as the …

Factorial Validity Of An Abbreviated Neighborhood Environment Walkability Scale For Seniors In The Nurses’ Health Study, Heather A. Starnes, Meghan H. Mcdonough, Kosuke Tamura, Peter James, Francine Laden, Philip J. Troped

Kinesiology and Public Health

Background

Using validated measures of individuals’ perceptions of their neighborhood built environment is important for accurately estimating effects on physical activity. However, no studies to date have examined the factorial validity of a measure of perceived neighborhood environment among older adults in the United States. The purpose of this measurement study was to test the factorial validity of a version of the Abbreviated Neighborhood Environment Walkability Scale (NEWS-A) modified for seniors in the Nurses’ Health Study (NHS).

Findings

A random sample of 2,920 female nurses (mean age = 73 ± 7 years) in the NHS cohort from California, Massachusetts, and …

Practical Applications Of Biomechanical Principles In Resistance Training: Neuromuscular Factors And Relationships, Jason Lake, Paul A. Swinton, Justin Keogh

Justin Keogh

This paper is the second in our three part series examining how a variety of biomechanical principles and concepts have direct relevance to the prescription of resistance training for the general and athletic populations as well as for musculoskeletal injury rehabilitation. In this paper, we considered different neuromuscular characteristics of resistance exercise. We started by defining the causes of motion, discussing force and Newton’s second law of linear motion. This led to discussion of impulse, and how its relationship with momentum can be used to study force-time curves recorded from different ground-based resistance exercises. This enables the sports biomechanist to …

The Effects Of Functional Fatigue On Ground Reaction Forces Of A Jump, Land, And Cut Task, Mikaela Boham, Mark Debeliso, Chad Harris, Ronald Pfeiffer, John Mcchesney, Joseph M. Berning

John W. McChesney Ph.,D.

Rapid acceleration, deceleration, landing and change of direction have been implicated as mechanisms of noncontact anterior cruciate ligament (ACL) injury. PURPOSE: To examine the ground reaction forces occurring to the knee during non-fatigued and fatigued jump, land and cut maneuvers in three unplanned cutting directions. METHODS: Eleven healthy, adult female collegiate soccer athletes participated in this study (age= 20.3±0.9 years; height= 167.4±4.8 cm; mass= 63.7±7.7 kg). Each subject was instructed to perform 9 jump, land, and cut maneuvers in a pre-fatigued state and fatigued state. The protocols were randomly assigned to include 3 cuts in each of the three directions. …

University Of Nebraska At Omaha Biomechanics Research Building Annual Report, Fall 2014, Biomechanics Research Building

Biomechanics Annual Report

This annual report features:

Letter from the Directer; COBRE Grant Press Release

Updates - Our New Building; Visitors; Moving on Up; Why Choose BRB as a Student?; Where Are They Now?; From the Bench to the Market

Projects - Neuroscience; NASA: Stimulation of the Sensory System; Motor Development; Variability Studies; Path Integration; Peripheral Artery Disease and Aging

Other Content - Beyond our Borders; Journal Club; Awards; Faculty Travels; Conferences; NE Science Fest; Campaign for Nebraska

Comprehensive School Physical Activity Programs: Characteristics Of Trained Teachers, Erin E. Centeio, Heather Erwin, Darla M. Castelli

Kinesiology, Health and Sport Studies

As public health concerns about physical inactivity and childhood obesity continue to rise, researchers are calling for interventions that comprehensively lead to more opportunities to participate in physical activity (PA). The purpose of this study was to examine the characteristics and attitudes of trained physical education teachers during the implementation of a Comprehensive School Physical Activity Program at the elementary level. Using a collective case study design, interviews, observations, field notes, open-ended survey questions, and an online forum monitoring guided the interpretation of teacher perceptions and development of emergent themes. Qualitative data analysis was conducted for each individual teacher and …

Physical Activity Change Through Comprehensive School Physical Activity Programs In Urban Elementary Schools, Erin E. Centeio, Nate Mccaughtry, Lila Gutuskey, Alex C. Garn, Cheryl Somers, Bo Shen, Jeffry J. Martin, Noel L, Kulik

Kinesiology, Health and Sport Studies

he impact of Comprehensive School Physical Activity Programs (CSPAPs) on urban children’s, educators’, and parents’ physical activity (PA) is relatively unknown. The purpose of this study was to explore overall changes in student, educator, and parent PA after an 8-month CSPAP-based program. This longitudinal, exploratory study implemented a CSPAP in 20 urban elementary schools, with six randomized for research. In-school PA was measured prepost for all fourth grade students using accelerometers. Parent and educator PA was self-reported using the IPAQ. RM-ANOVAs revealed significant prepost increases in minutes of student MVPA (P < .001). Parents significantly increased PA (P < .01) and although educators’ reported change in PA, it was not statistically significant (P = .50). This study provides unique …

Effects Of Yoga On Arm Volume Among Women With Breast Cancer Related Lymphedema: A Pilot Study, Mary Insana Fisher, Betsy Donahoe-Fillmore, Laura Leach, Colleen O'Malley, Cheryl Paeplow, Tess Prescott, Harold L. Merriman

Physical Therapy Faculty Publications

Lymphedema affects 3–58% of survivors of breast cancer and can result in upper extremity impairments. Exercise can be beneficial in managing lymphedema. Yoga practice has been minimally studied for its effects on breast cancer related lymphedema (BCRL). The purpose of this study was to determine the effect of yoga on arm volume, quality of life (QOL), self-reported arm function, and hand grip strength in women with BCRL. Six women with BCRL participated in modified Hatha yoga 3×/week for 8 weeks. Compression sleeves were worn during yoga sessions. Arm volume, QOL, self-reported arm function, and hand grip strength were measured at …

Postural Sway In Infants At Low And High Risk For Autism Spectrum Disorder, Rachel C. Harris

Open Access Theses

ABSTRACT Harris, Rachel C. M. S., Purdue University, December 2014. Postural Control in Infants at Low and High Risk for Autism Spectrum Disorder. Major Professor: Laura J. Claxton. Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder more commonly known for deficits in social and communication skills. More recently, aspects of motor development have been shown to be delayed in children with ASD, including deficits in their postural control abilities. Children with ASD have difficulty integrating information from their sensory systems to help control their balance. Infants at risk for ASD and infants who are later diagnosed with ASD have delays …

A Comparative Assessment Of Hand Preference In Captive Red Howler Monkeys, Alouatta Seniculus And Yellow-Breasted Capuchin Monkeys, Sapajus Xanthosternos, Nasibah Sfar, Madhur Mangalam, Werner Kaumanns, Mewa Singh

Journal Articles

There are two major theories that attempt to explain hand preference in non-human primates–the ‘task complexity’ theory and the ‘postural origins’ theory. In the present study, we proposed a third hypothesis to explain the evolutionary origin of hand preference in non-human primates, stating that it could have evolved owing to structural and functional adaptations to feeding, which we refer to as the ‘niche structure’ hypothesis. We attempted to explore this hypothesis by comparing hand preference across species that differ in the feeding ecology and niche structure: red howler monkeys, Alouatta seniculus and yellow-breasted capuchin monkeys, Sapajus xanthosternos. The red …

Unilateral Traditional Weight Lifting Generates Greatest Acute Upper Body Power Output, Evan H. Nakachi

Theses and Dissertations

Bilateral deficit (BLD) is a phenomenon where the force generated from simultaneous bilateral limb contractions is less than the sum force generated by separate right and left limb contractions. There have been many BLD studies, but the measures of force generation have predominantly been with isometric and isokinetic contractions. There are, however, no dynamic upper body isotonic unilateral weight lifting studies on acute power output. The purpose of this study was to determine acute power output between bilateral and unilateral weight lifting under the conditions of traditional and circuit weight lifting. Seventeen male BYU rugby players (age = 21.8 ± …

Effect Of Obesity And Exercise On The Expression Of The Novel Myokines, Myonectin And Fibronectin Type Iii Domain Containing 5, Jonathan M. Peterson, Ryan Mart, Cherie E. Bond

ETSU Faculty Works

Metabolic dysfunction in skeletal muscle is a major contributor to the development of type 2 diabetes. Endurance exercise training has long been established as an effective means to directly restore skeletal muscle glucose and lipid uptake and metabolism. However, in addition to the direct effects of skeletal muscle on glucose and lipids, there is renewed interest in the ability of skeletal muscle to coordinate metabolic activity of other tissues, such as adipose tissue and liver. The purpose of this study was to examine the effects of endurance exercise on the expression level of two novel muscle-derived secreted factors, or myokines, …

Developing A Statewide Childhood Body Mass Index Surveillance Program, Yong Gao, Laura Petranek, Jane Shimon

Jane Shimon

Background

Several states have implemented childhood obesity surveillance programs supported by legislation. Representatives from Idaho wished to develop a model for childhood obesity surveillance without the support of state legislation, and subsequently report predictors of overweight and obesity in the state.

Methods

A coalition comprised of the Idaho State Department of Education and 4 universities identified a randomized cluster sample of schools. After obtaining school administrator consent, measurement teams traveled to each school to measure height and weight of students. Sex and race/ethnicity data were also collected.

Results

The collaboration between the universities resulted in a sample of 6735 students …

Using The Minority Stress Model To Understand Depression In Lesbian, Gay, Bisexual, And Transgender Individuals In Nebraska, Molly Mccarthy, Christopher M. Fisher, Jay A. Irwin, Jason D. Coleman, Aja D. Kneip Pelster

Sociology and Anthropology Faculty Publications

Previous studies demonstrated the utility of the minority stress model in understanding health disparities for lesbian, gay, bisexual, and transgender (LGBT) populations. Since most research has considered large metropolitan areas, predominantly in coastal regions of the United States, this research focuses on a midwestern state, Nebraska. This study sought to assess the relationships between depressive symptoms experienced by participants (N = 770) and minority stress variables, including experiences with violence, perceptions of discrimination, and respondents’ degree of self-acceptance of their LGBT identity. Regression analysis revealed that after controlling for demographic variables, self-acceptance, and perceived discrimination were correlated with depressive symptoms. …