Kinesiology Commons^™

Individualized Hydration Plans Improve Performance Outcomes For Collegiate Athletes Engaging In In-Season Training, David Ayotte Jr, Michael P. Corcoran

Health Sciences Faculty Publications

Background: Athletes commonly consume insufficient fluid and electrolytes just prior to, or during training and competition. Unlike non-athletes or athletes who do not engage in frequent rigorous and prolonged training sessions, “hard trainers” may require additional sodium and better benefit from a hydration plan tailored to their individual physiology. The purpose of this randomized cross-over study was to determine whether a hydration plan based off of an athlete’s sweat rate and sodium loss improves anaerobic and neurocognitive performance during a moderate to hard training session as well as heart rate recovery from this session. Methods: Collegiate athletes who were injury …

Communicator, June 2018, San Jose State University, Department Of Kinesiology

Communicator (Kinesiology)

No abstract provided.

Changes In Endothelial Function After Acute Resistance Exercise Using Free Weights, Yu Lun Tai, Erica M. Marshall, Jason C. Parks, Xian Mayo, Alaina Glasgow, J. Derek Kingsley

Health & Human Performance Faculty Publications and Presentations

We determined the effects of an acute bout of free-weight resistance exercise (ARE) on cardiovascular hemodynamics and endothelial function in resistance-trained individuals. Nineteen young, healthy, resistance-trained individuals performed two randomized sessions consisting of ARE or a quiet control (CON). The ARE consisted of three sets of 10 repetitions at 75% 1-repetition maximum for the squat, bench press, and deadlift. Cardiovascular hemodynamics was assessed using finger photoplethysmography. Forearm blood flow (FBF), and vasodilatory capacity markers, were assessed using venous occlusion plethysmography. Forearm vascular conductance was calculated by the division of mean FBF by mean arterial pressure. A two-way ANOVA was used …

Effects Of Instability On Core Muscle Activation In A Side Bridge, Erin E. Kishman

Masters Theses

Training the musculature of the core continues to be perceived as an essential component of conditioning and rehabilitation settings (11). A popular way to train the core is with the use of instability devices, such as Swiss ball or suspension trainer. However, there is limited research on the effects of these devices on core muscle activity. The purpose of this study was to examine core muscle activity during side bridge variations with and without instability devices (Floor, Swiss Ball, and TRX) through electromyography (EMG) of the rectus abdominis, external oblique, erector spinae, and latissimus dorsi. 39 participants performed three variations …

Comparative Analysis Of Physiological Measurements And Environmental Metrics On Predicting Heat Stress Related Events, Mckenzie Lee Barlow

Master's Theses

Exposure to high heat and humidity can lead to serious health risks, including heat exhaustion and heat stroke. Wet Bulb Globe Temperature (WBGT) and heat index have historically been used to predict heat stress events, but individualized factors are not included in the measurement. It has been shown that there is a relationship between cardiovascular measurements and heat stress, which could be used to measure heat stress risk on an individual level. Research has been done to find relationships between cardiovascular metrics in a workplace environment, however the study did not include the use of a controlled environment as a …

Experimental Measurement Of Dolphin Thrust Generated During A Tail Stand Using Dpiv, Frank E. Fish, Terrie M. Williams, Erica Sherman, Yae Eun Moon, Vicki Wu, Timothy Wei

Biology Faculty Publications

: Estimation of force generated by dolphins has long been debated. The problem was that indirect estimates of force production for dolphins resulted in low values that could not be validated. Bubble digital particle image velocimetry (DPIV) measured hydrodynamic force production for swimming dolphins and demonstrated high force production. To validate the bubble DPIV and reconcile force production measurements, two bottlenose dolphins (Tursiops truncatus) performing tail stands were measured with bubble DPIV. Microbubbles were generated from a finely porous hose and compressed air source. Displacement of the bubbles by the propulsive motions of the dolphin was tracked with a high-speed …

The Four Minute Mile----And The Entire Sport World Is Changed, Paul Olsen

Celebration of Learning

Roger Bannister died recently, and he should be remembered as the man who changed sport----as well as an understanding of human possibility---forever. In 1954 this medical student at Oxford University navigated a world full of both hope and fear, of perceived physical limitation, historical "proof," physical exhaustion, naysayers from all angles including the press, coaches, and fellow athletes. Throughout that journey, Bannister grasped at what he called "rhythms arising from nerve impulses and contracting muscles which interact . . . with a feeling of beauty . . . which might otherwise remain locked away inside ourselves."

Combined Resistance And Aerobic Exercise Training Reduces Insulin Resistance And Central Adiposity In Adolescent Girls Who Are Obese: Randomized Clinical Trial, Leena P. Bharath, William W. Choi, Jae-Min Cho, Alexus A. Skobodzinski, Alexei Wong, Ty E. Sweeney, Song-Young Park

Health and Kinesiology Faculty Publications

Introduction

Exercise training is recommended for improving health and protecting against the development of metabolic and cardiovascular pathologies. Combined resistance and aerobic exercise training (CRAE) has been shown to provide unique benefits in older adults with cardiovascular diseases.

Purpose

We sought to determine the beneficial effects of CRAE in adolescent girls who are obese and hyperinsulinemic.

Methods

Forty adolescent girls who are obese (age 14.7 ± 1 years; BMI 30 ± 2) were randomly assigned to a “no exercise” (CON n = 20) or combined exercise group (EX n = 20). The EX group performed resistance and aerobic exercise for …

Onward And Upward: Optimizing Motor Performance, Lee-Kuen Chua, Gabriele Wulf, Rebecca Lewthwaite

Kinesiology and Nutrition Sciences Faculty Publications

In the OPTIMAL theory of motor learning (Wulf & Lewthwaite, 2016), three factors are postulated to facilitate motor performance and learning: Enhanced expectancies (EE) for performance, autonomy support (AS), and an external focus (EF) of attention. We examined whether EE, AS, and EF would have immediate performance benefits and whether implementing these factors consecutively would lead to incremental performance increases. Participants were assigned to the optimized or control groups and performed a maximal jump. After the first trial block (baseline), optimized group participants were provided different conditions on each of the following 3 blocks: (a) Positive social-comparative feedback (EE); (b) …

Gait Stability Has Phase-Dependent Dual-Task Costs In Parkinson’S Disease, Peter C. Fino, Martina Mancini, Carolin Curtze, John G. Nutt, Fay B. Horak

Journal Articles

Dual-task (DT) paradigms have been used in gait research to assess the automaticity of locomotion, particularly in people with Parkinson’s disease (PD). In people with PD, reliance on cortical control during walking leads to greater interference between cognitive and locomotor tasks. Yet, recent studies have suggested that even healthy gait requires cognitive control, and that these cognitive contributions occur at specific phases of the gait cycle. Here, we examined whether changes in gait stability, elicited by simultaneous cognitive DTs, were specific to certain phases of the gait cycle in people with PD. Phase-dependent local dynamic stability (LDS) was calculated for …

Pacing Of An Untrained 17-Year-Old Teenager In A Marathon Attempt, Beat Knechtle, Celina Knechtle, Thomas Rosemann, Pantelis Nikolaidis

International Journal of Exercise Science

International Journal of Exercise Science 11(6): 856-866, 2018. Although there has been increased scientific interest for physiological responses to endurance running and pacing, limited information exists for adolescents participating in endurance events. We are reporting the case of an untrained 17-year-old female teenager (body mass 50.6 kg, height 167 cm and body mass index 18.1 kg/m²) who intended to run a marathon within 6 hours without preparation. The young woman missed her goal by just 2 km. When the average running speed per hour was analysed, there was a major effect of race hour on running speed (p …

Motor Affordance For Grasping A Safety Handle, Douglas W. Mcdannald, Manhoud Mansour, Garrett Rydalch, David A.E. Bolton

Kinesiology and Health Science Faculty Publications

Mere observation of objects in our surroundings can potentiate movement, a fact reflected by visually-primed activation of motor cortical networks. This mechanism holds potential value for reactive balance control where recovery actions of the arms or legs must be targeted to a new support base to avoid a fall. The present study was conducted to test if viewing a wall-mounted safety handle – the type of handle commonly used to regain balance – results in activation of motor cortical networks. We hypothesized that the hand area of the primary motor cortex would be facilitated shortly after visual access to a …

Hematological Changes In Response To A Drastic Increase In Training Volume In Recreational Cyclists, Jessie Axsom

James Madison Undergraduate Research Journal (JMURJ)

Changes in blood volume contribute to improvement in oxygen utilization (VO2max) with chronic endurance exercise training. Although hematological changes resulting from long-term endurance training have been well documented, it has not been well established whether an increased volume of endurance training preferentially affects plasma volume or red blood cell volume. To answer this question, I studied seven female and four male recreational cyclists before and after exposure to drastic increases (632%) in training volume. Following the 10-week training period, the mean hematocrit (Hct) of the 11 subjects who completed the study significantly (p0.05) correlated with the change in self-reported weekly …

Thermoregulatory Dysfunction In Multiple Sclerosis, Dustin R. Allen

Applied Physiology and Wellness Theses and Dissertations

Multiple sclerosis (MS) is a progressive neurological disease of the central nervous system (CNS) affecting an estimated 2.3 million people worldwide. Marked by lesions in the brain and spinal cord, MS leads to conduction abnormalities in the CNS. Evidence suggests ~60% of individuals with MS experience temporary worsening of their symptoms upon exposure to heat. Adding complexity, observational evidence suggests these individuals exhibit reduced thermoregulatory responses in upon increases in core temperature. Consequently, these individuals face a vicious cycle of heat sensitivity and thermoregulatory dysfunction, substantially impacting their quality of life. With this in mind, our lab is dedicated to …

Effects Of Prior Fasting On Fat Oxidation During Resistance Exercise, Kendall Frawley, Gabrielle Greenwald, Rebecca R. Rogers, John K. Petrella, Mallory R. Marshall

International Journal of Exercise Science

International Journal of Exercise Science 11(2): 827-833, 2018. Prior research has demonstrated that the percentage of fuel utilization contributed by CHO compared to fat rises with an increase in exercise intensity. The role of food intake prior to exercise has been well studied and fasting prior to exercise generally increases reliance on fat as fuel. However, data on the role of fasting prior to resistance exercise is limited. Therefore, the purpose of this study was to assess the effects of one bout of resistance training in a fasted state compared to ingestion of standardized meal on fat and carbohydrate utilization. …

Behavior Of Heart Rate Variability After 10 Repetitions Maximum Load Test For Lower Limbs, Estêvão R. Monteiro, Jefferson S. Novaes, Aline G. Fiuza, Eduardo Portugal, Felipe S. Triani, Leonardo Bigio, Rudson Santos, Alexandre Palma, Victor G. Corrêa Neto

International Journal of Exercise Science

International Journal of Exercise Science 11(6): 834-843, 2018. The purpose of this study was to analyze the acute heart rate variability behavior after 10 repetitions maximum load test for back squat, leg press, leg extension, and leg flexion in normotensive subjects. Eight recreationally trained women (age: 21.8 ± 2.2 yrs; height: 167.6 ± 6.3 cm; weight: 61.6 ± 10.1 kg) performed two 10 repetitions maximum testing days with 48-hours rest between each one. Heart rate variability was measured in baseline and postexercise (15-, 30-, 45-, and 60-minutes) for time and frequency domain. A significant difference was identified in RMSSD_{ms …}

Relative Handgrip Strength As A Simple Tool To Evaluate Impaired Heart Rate Recovery And A Low Chronotropic Index In Obese Older Women, Cristiane Rocha Da Silva, Dahan Da Cunha Nascimento, Ivo Sousa Neto, Ramires Tibana, Samuel Oliveira, Renato Valduga, Nayara Santos, Bruno Saraiva, Jonato Prestes, Jeffrey Willardson, Guilherme Borges Pereira

International Journal of Exercise Science

International Journal of Exercise Science 11(2): 844-855, 2018. The aim of the present study was to compare differences in heart rate response following a treadmill exercise test in elderly obese women categorized into groups based on relative handgrip strength. Eighty-eight obese elderly women who were between the ages of 60 and 87 participated in the study and were categorized and enrolled to one of two groups based on lower (< 1.51 m²) or higher (≥ 1.51 m²) relative handgrip strength, respectively. The heart rate recovery in the first and second minutes following the treadmill exercise test and the chronotropic index were compared between groups. The higher relative handgrip strength group presented a significantly higher peak heart rate during exercise and a quicker heart rate recovery following exercise versus the lower relative handgrip strength group (pp=0.059) toward a significantly greater chronotropic index in the higher versus the lower relative handgrip strength group. In conclusion, elderly women with greater relative handgrip strength also demonstrated a …

Representation Of The Human Musculature In The Bronze Age Aegean, Emily R Brower

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Bronze Age sculptures range from abstract to realistic, but how accurate are the realistic sculptures? To answer this question, it is useful to compare three pieces of artwork: Prince of Lilies from Knossos, Kouros from Palaikastro, and the Boxer Rhyta from Ayia Triadha to a musculature replica. These pieces originate from the Bronze Age in the Aegean. What this comparison will tell us is how much the ancient peoples were studying the human body, along with the reasons as to why these sculptures were portrayed with such realistic characteristics. To accomplish this goal this paper takes the artifacts background into …

Formation And Function Of A Collegiate Athletics Sustainability Committee, Brian P. Mccullough, Timothy Kellison, Elodie Wendling

Kinesiology Faculty Publications

Institutions of higher learning may be considered dual-identity organizations because of the perceived distinctiveness between universities’ academic and athletic missions. One way in which these barriers can be weakened is through cross-sector social partnerships (CSSPs), a form of collaborative engagement aimed at achieving a common societal goal. In this study, we examine the formation of a university-directed CSSP focused on enhancing environmentally sustainable initiatives within the Athletic Department. Interviews with 11 members of a so-called Green Team illustrate the processes of boundary spanning and boundary blurring. As demonstrated in the article, boundary spanning occurred under the leadership of a “champion” …

Biomechanical Analysis Of Jumping: The Influence Of External Load And Countermovement Depth On Deceleration Strategies And Performance, Leland Adam Barker

UNLV Theses, Dissertations, Professional Papers, and Capstones

Jumping performance has traditionally been measured by jump height alone. In recent years, the reactive strength index (RSI = Jump height / jump time)) has been used as another measure of jump performance. According to RSI, which was developed to assess eccentric force production, jump performance can improve by increasing jump height, decreasing jump time, or both simultaneously. However, it is not clear how force production correlates to RSI variables. If RSI is meant to be a practical measure of eccentric force production, it should correlate strongly to eccentric and amortization force production during jumping. Thus, the purpose of the …