Kinesiology Commons^™

Comparison Of Single Leg Squat Variations On Lower Limb Muscle Activation And Center Of Pressure Alterations, Mary Grace Knoll, Mackenzie C. Davidge, Claire E. Wraspir, John A. Korak

International Journal of Exercise Science

International Journal of Exercise Science 12(1): 950-959, 2019. Following anterior cruciate ligament reconstruction, individuals experience inadequate functioning of the quadriceps and decreased muscular strength. Decreased function delays return to physical activity and increases potential for re-injury. While several squat variations exist, a new variation has emerged in rehabilitation. The purpose of this study was to compare muscle activation of the Vastus Lateralis (VL), Vastus Medialis (VM), Rectus Femoris (RF), Gluteus Maximus (GM), and anterior posterior center of pressure (AP displacement) alterations during a single leg squat variation (SLS variation) versus a traditional split squat using electromyography (EMG) in healthy active …

The Foot And Ankle Structures Reveal Emergent Properties Analogous To Passive Springs During Human Walking, Erica Hedrick, Steven J. Stanhope, Kota Z. Takahashi

Journal Articles

An objective understanding of human foot and ankle function can drive innovations of bio-inspired wearable devices. Specifically, knowledge regarding how mechanical force and work are produced within the human foot-ankle structures can help determine what type of materials or components are required to engineer devices. In this study, we characterized the combined functions of the foot and ankle structures during walking by synthesizing the total force, displacement, and work profiles from structures distal to the shank. Eleven healthy adults walked at four scaled speeds. We quantified the ground reaction force and center-of-pressure displacement in the shank’s coordinate system during stance …

Alterations In Cortical Activation Among Individuals With Chronic Ankle Instability During Single-Limb Postural Control, Adam Rosen, Jennifer M. Yentes, Melanie L. Mcgrath, Arthur C. Maerlender, Sara A. Myers, Mukul Mukherjee

Journal Articles

Context

Chronic ankle instability (CAI) is characterized by repetitive ankle sprains and perceived instability. Whereas the underlying cause of CAI is disputed, alterations in cortical motor functioning may contribute to the perceived dysfunction.

Objective

To assess differences in cortical activity during single-limb stance among control, coper, and CAI groups.

Design

Cross-sectional study.

Setting

Biomechanics laboratory.

Patients or Other Participants

A total of 31 individuals (10 men, 21 women; age = 22.3 ± 2.4 years, height = 169.6 ± 9.7 cm, mass = 70.6 ± 11.6 kg), who were classified into control (n = 13), coper (n = 7), and CAI …

Influence Of Hydration Status On Running Performance And Makers Of Psychological And Physiological Stress In High School Cross Country Runners, Joshua Granger

LSU Master's Theses

Adequate hydration is an important attribute to an individual’s health and wellbeing. This is highlighted in athletic populations, who are at great risk for hypohydration, regardless of age, sex, and sport. The rampant hypohydration observed in athletes is present at all levels of competition, from professional athletes, with access to substantial monetary and nutrition support to division 3 and recreational athletes who often face monetary challenges. This trend continues to trickle down to lower levels of competition, such as high school, where athletes often practice and compete in dehydrated states. Practicing in these hypohydrated states can cause health issues such …

Athletic Directors’ Perceptions Regarding The Value Of Employing Athletic Trainers In The Secondary School Setting, Stephanie H. Clines, Cailee E. Welch Bacon, Christianne M. Eason, Kelly D. Pagnotta, Robert A. Huggins, Bonnie L. Lunen

Athletic Training Faculty Publications

There is currently a limited understanding of the value of athletic trainers (ATs) working in the secondary school setting. Therefore, our objective was to explore high school athletic directors’ perceptions of an AT’s roles and services and the means in which those perceptions are established, specifically as they relate to the value of ATs. A qualitative methodology was utilized for this investigation. High school athletic directors were interviewed regarding their experiences with the use of athletic training services. Data was analyzed using the consensual qualitative research approach. Athletic directors demonstrated an overall understanding of the roles and responsibilities fulfilled by …

Implementing Eccentric Resistance Training—Part 1: A Brief Review Of Existing Methods, Timothy J. Suchomel, John P. Wagle, Jamie Douglas, Christopher Taber, Melissa Harden, G. Gregory Haff, Michael H. Stone

Exercise Science Faculty Publications

The purpose of this review was to provide a physiological rationale for the use of eccentric resistance training and to provide an overview of the most commonly prescribed eccentric training methods. Based on the existing literature, there is a strong physiological rationale for the incorporation of eccentric training into a training program for an individual seeking to maximize muscle size, strength, and power. Specific adaptations may include an increase in muscle cross-sectional area, force output, and fiber shortening velocities, all of which have the potential to benefit power production characteristics. Tempo eccentric training, flywheel inertial training, accentuated eccentric loading, and …

Oral Glutamine Supplement Reduces Subjective Fatigue Ratings During Repeated Bouts Of Firefighting Simulations, Mary Moore, Terence A. Moriarty, Gavin Connolly, Christine Mermier, Fabiano Amorim, Kevin Miller, Micah Zuhl

Faculty Work

Wildland firefighting requires repetitive (e.g., consecutive work shifts) physical work in dangerous conditions (e.g., heat and pollution). Workers commonly enter these environments in a nonacclimated state, leading to fatigue and heightened injury risk. Strategies to improve tolerance to these stressors are lacking. Purpose: To determine if glutamine ingestion prior to and after consecutive days of firefighting simulations in the heat attenuates subjective ratings of fatigue, and evaluate if results were supported by glutamine-induced upregulation of biological stress responses. Methods: Participants (5 male, 3 female) ingested glutamine (0.15 g/kg/day) or a placebo before and after two consecutive days (separated by 24 …

Pilates Training Induces Changes In The Trunk Musculature Of Adolescents, Noelia González-Gálvez, María Carrasco Poyatos, Pablo Jorge Marcos-Pardo, Yuri Feito

Faculty Articles

Introduction The Pilates Method may be an appropriate form of exercise for improving trunk muscle strength, which can be a predictor of pain and musculoskeletal problems. Objective The objective of this study was to assess the effects of the Pilates Method on muscle strength and endurance of the extensor and flexor muscles of the trunk in a group of adolescents. Methods The sample consisted of 101 high-school students divided into two groups: an experimental group (EG=81) and a control group (CG=20). The intervention was carried out twice a week for six weeks. Each session lasted 55 minutes, and was divided …

Adaptive Paddle Board, Alexander Holthaus, Alexander Holthaus, Garrett Holmes, Garett Jones

Mechanical Engineering

This Final Design Review (FDR) document outlines the Adaptive Paddle Board senior project, done by four Mechanical Engineering Students at California Polytechnic State University and provides detail on the project and what the team has accomplished. The goal was to create a universally adaptive paddle board that can be used by the Central California Adaptive Sports Center for a wide range of persons with disabilities. This document highlights current research from patents and existing products, details regarding customer specifications, results from concept generation, the manufacturing and testing that went into the final design, and the process taken to get there. …

Atrial Fibrillation And Exercise: Exercise Recommendations, Paul Sorace, Peter Ronai, Robert Berry

Exercise Science Faculty Publications

Atrial fibrillation (AF), characterized by a rapid pulse rate and an irregular heart rhythm. It is a more common cardiac arrhythmia. AF may lack symptoms, although fatigue and an impaired exercise ability are common symptoms. This column will discuss exercise testing and training recommendations as well as special considerations.

International Comparison Of The Levels And Potential Correlates Of Objectively Measured Sedentary Time And Physical Activity Among Three-To-Four-Year-Old Children, Kaiseree I. Dias, James White, Russell Jago, Greet Cardon, Rachel Davey, Kathleen F. Janz, Russell R. Pate, Jardena J. Puder, John J. Reilly, Ruth Kipping

Faculty Publications

Physical activity (PA) patterns track from childhood through to adulthood. The study aimed to determine the levels and correlates of sedentary time (ST), total PA (TPA), and moderate-to-vigorous PA (MVPA) in preschool-aged children. We conducted cross-sectional analyses of 1052 children aged three-to-four-years-old from six studies included in the International Children’s Accelerometry Database. Multilevel linear regression models adjusting for age, gender, season, minutes of wear time, and study clustering effects were used to estimate associations between age, gender, country, season, ethnicity, parental education, day of the week, time of sunrise, time of sunset, and hours of daylight and the daily minutes …

The Consequences Of Cold Water Immersion: Impacts And Treatment, Patrick J. Buck Ph.D., Commander William Roberts, Commander Ken Minehane

International Journal of Aquatic Research and Education

This paper documents a demonstration project conducted by the authors under the auspices of the Irish Naval service. It explores and describes in detail the consequences that cold water immersion can have on the human body. Further, this study investigates post immersion treatment and survival challenges and proposes appropriate casualty care regimes with specific focus on ‘post rescue collapse’ and ‘afterdrop.’ Observations of individual differences in response are reported.

Exploring Correlates Of Infant Clarity Of Cues During Early Feeding Interactions, Alison K. Ventura, Sierra Sheeper, Jordyn Levy

Kinesiology and Public Health

Background Recommendations aimed at reducing infants’ risk for rapid weight gain primarily focus on promoting caregivers’ use of responsive feeding practices and styles. These recommendations are grounded in the belief that infants will effectively signal hunger and satiation to their caregivers. To date, few studies have explored how variability in infants’ communication of hunger and satiation may contribute to feeding interactions.

Objective Our aim was to explore variability in, and correlates of, infant clarity of cues during feeding interactions.

Design This was a cross-sectional study.

Participants/setting Mother-infant dyads (n = 86) were video-recorded during a typical feeding interaction within laboratory-based …

Time-Course Of Changes In Physiological, Psychological And Performance Markers Following A Functional-Fitness Competition, Ramires Alsamir Tibana, Jonato Prestes, Nuno Frade Sousa, Vinicius C. De Souza, Otávio De Tolêdo Nóbrega, Matheus Baffi, Carlos Ernesto S. Ferreira, Gabriel Veloso Cunha, James W. Navalta, Joice Cristina Dos Santos Trombeta, Cláudia R. Cavaglieri, Fabrício Azevedo Voltarelli

International Journal of Exercise Science

International Journal of Exercise Science 12(3): 904-918, 2019. Functional Fitness Training (FFT) programs are characterized by utilizing a high volume of training and using a variety of high intensity exercises. While FFT are growing in the number of practitioners and popularity, the relationship between physiological biomarkers and subjective scales in the specific context of FFT has not yet been evaluated in the literature. The purpose of the present study was to monitor the time-course response of cytokines (IL-10 and 1L-1b), immune variables (C-reactive protein -CRP and immunoglobulin A-IgA), hormonal milieu (cortisol-C, total testosterone-TT, free testosterone-FT and testosterone/cortisol-T/C ratio), creatine kinase-CK, …

Breathing Limited Air Situational Training Masks (Blastmask) Versus Self-Contained Breathing Apparatus (Scba) For Firefighters: A Pilot Study, Thomas Andre, Silvio Valladao, Shana Walsh, Derek Reisbeck

International Journal of Exercise Science

International Journal of Exercise Science 12(6): 941-949, 2019. Despite maintaining high levels of fitness, firefighters’ performance may be negatively impacted by the use of a Self-Contained Breathing Apparatus (SCBA), an essential piece of safety equipment worn during structural firefighting. Routine training with SCBAs can be cost-prohibitive and inefficient. The Breathing Limited Air Situational Training Mask (BlastMask) was developed as a training aid used to simulate the SCBA. The purpose of this study was to examine physiological and perceptual responses elicited by firefighters during steady state exercise when using the BlastMask compared to the SCBA. Current staff male firefighters (n …

The Impact Of Physical Activity And Sleep On Physiology Following A Mtbi, Garrett L. Lindsey, Alia Yasen, Anita Christie

International Journal of Exercise Science

International Journal of Exercise Science 12(3): 919-931, 2019. A mild traumatic brain injury (mTBI) is a common injury that happens to people across a range of lifestyles. Rest has been regarded as the most effective remedy to restore impaired physiological functions in those who have experienced this kind of injury. However, recent data suggests that a gradual increase in physical activity post-injury can lead to quicker recovery from negative symptoms. The impact of physical activity on physiologic recovery is not completely understood and the purpose of this study was to better understand how physical activity and sleep influence physiological outcomes …

Agreement Between The Open Barbell And Tendo Linear Position Transducers For Monitoring Barbell Velocity During Resistance Exercise, Adam M. Gonzalez, Gerald T. Mangine, Robert W. Spitz, Jamie J. Ghigiarelli

Faculty Articles

To determine the agreement between the Open Barbell (OB) and Tendo weightlifting analyzer (TWA) for measuring barbell velocity, eleven men (19.4 ± 1.0 y) performed one set of 2–3 repetitions at four sub-maximal percentage loads, [i.e., 30, 50, 70, and 90% one-repetition maximum (1RM)] in the back (BS) and front squat (FS) exercises. During each repetition, peak and mean barbell velocity were recorded by OB and TWA devices, and the average of the 2–3 repetitions was used for analyses. Although the repeated measures analysis of variance revealed significantly (p ≤ 0.005) greater peak and mean velocity scores from OB across …

Comparison Of College Student Hypertension Prevalence Between The Jnc7 And Acc/Aha Diagnostic Criteria, Kadiatu Kamara, Oliver W A Wilson, Zack Papalia, Melissa Bopp, C M. Bopp

International Journal of Exercise Science

International Journal of Exercise Science 12(3): 898-903, 2019. Hypertension is highly prevalent and associated with non-communicable diseases and increased premature mortality risk. However, the impact of the new hypertension diagnostic criteria on the prevalence of hypertension diagnoses has yet to be examined among college students. The purpose of this study was to compare the prevalence of hypertension between the JNC7 and the ACC/AHA hypertension diagnostic criteria among college students. The blood pressure of 5,945 college students was assessed, and chi-square tests for independence examined differences between JNC7 and ACC/AHA criteria. The mean age of participants was 21.30 ± 1.05 years, …

The Validity Of Resting Metabolic Rate (Rmr)-Prediction Equations And Reliability Of Measured Rmr In Female Athletes, Kelsi Mackay, Katie Schofield, Stacy Sims, Joseph Mcquillan, Matthew Driller

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 886-897, 2019. The aim of the current study was to; 1) assess the test-retest reliability of an indirect calorimetry analyzer (Parvo Medics TrueOne), and 2) compare measured RMR with three RMR-predictive (pRMR) equations in female athletes. In part one, 12 recreationally-exercising women (mean ± SD; age 27.5 ± 12.3 y) performed two RMR assessments, on separate days, utilising the Parvo Medics TrueOne analyser. In part two, 25 recreationally-exercising women to sub-elite athletes (mean ± SD; age 30.1 ± 10.2 y) underwent an RMR assessment using the Parvo Medics TrueOne analyser, which was compared to …

Heart Rate Variability Monitoring During Strength And High-Intensity Interval Training Overload Microcycles, Christoph Schneider, Thimo Wiewelhove, Christian Raeder, Andrew Flatt, Olaf Hoos, Laura Hottenrott, Oliver Schumbera, Michael Kellmann, Tim Meyer, Mark Pfeiffer, Alexander Ferrauti

Health Sciences & Kinesiology: Faculty Publications

Objective: In two independent study arms, we determine the effects of strength training (ST) and high-intensity interval training (HIIT) overload on cardiac autonomic modulation by measuring heart rate (HR) and vagal heart rate variability (HRV).

Methods: In the study, 37 well-trained athletes (ST: 7 female, 12 male; HIIT: 9 female, 9 male) were subjected to orthostatic tests (HR and HRV recordings) each day during a 4-day baseline period, a 6-day overload microcycle, and a 4-day recovery period. Discipline-specific performance was assessed before and 1 and 4 days after training.

Results: Following ST overload, supine HR, and vagal HRV (Ln RMSSD) …