Exercise Physiology Commons^™

Eeg Responses To Incremental Self-Paced Cycling Exercise In Young And Middle Aged Adults, Rachel M. Maceri, Nicholas P. Cherup, Nicholas J. Hanson

International Journal of Exercise Science

International Journal of Exercise Science 12(3): 800-810, 2019. Electroencephalography (EEG) is a non-invasive method of measuring electrical activity of the brain during exercise. There is conflicting evidence as to how neural activity changes in relation to incremental exercise testing (IET), or if age has any effect. The purpose of this study was to determine 1) how brain activity changes throughout an IET, and 2) if age affects this response. 13 younger (age: 24.9 ± 2.6 years, 9 males) and 10 middle-aged (49.1 ± 3.2 years, 3 males) recreationally active individuals volunteered for this study. A self-paced, perceptually regulated IET was …

Food Traceability In School Foodservice Operations: Benefits And Challenges, Basem Boutros, Kevin Roberts, Naiqing Lin, Kevin Sauer

Health and Sport Science Faculty Publications

Purpose/Objectives: This study explored food traceability systems in school foodservice in the United States and the potential benefits and challenges to their implementation.

Methods: An online questionnaire was developed and used to collect data. A mixed-mode approach was followed to recruit the participants. A convenience sample of 500 school nutrition professionals from Qualtrics panel was targeted for data collection with the goal of having responses from 300 participants. Due to low response rate from the initial panel, the contact information of a second convenience sample of 200 child nutrition professionals with no geographic representation was obtained from the National Center …

A Mixed-Methods Approach To Understanding The Relationship Between Mental Toughness And The Effect Of Music On Exercise Performance, Kayla Baker

Electronic Theses and Dissertations

Previous research has investigated the use of music as an ergogenic aid for exercise performance; however, the effect of music on exercise may differ between individuals of varying levels of mental toughness (MT). Purpose: The purpose of this study is to examine the moderating effect of MT on the effect of listening to music during exercise. Methods: The current study used a counter-balanced design, utilizing a mixed-methods approach. Thirty-one recreationally-active individuals (22.13 ± 2.11 yrs, 1.73 ± .10 m, 75.68 ± 14.67 kg, 42.89 ± 5.31 mL·kg·min-1; 65.5% males) were recruited for this study. Participants completed an initial visit to …

Noninvasive Myographical Assessments Following Unaccustomed Resistance Exercise, Carleigh Boone

Electronic Theses and Dissertations

Traditionally, post-exercise muscular alterations have been examined using invasive techniques that lack the ability to single out individual muscle groups. Sonomyography, tensiomyography, and electrical impedance myography allow for noninvasive skeletal muscle assessment. This project aimed to examine changes in muscle contractility and composition that occur in the early stages of recovery following unaccustomed exercise. METHODS: Twenty-one untrained adults (21.9 ± 1.9 y) performed exercise – 10 × 10 maximal eccentric knee extensions – with their nondominant leg. For each repetition, participants moved through 90° range of motion at 90°•s-1 with a passive return to the start position. Each set was …

Effects Of Rest Position On Ultrasound-Derived Morphological Characteristics Of The Vastus Lateralis And Lower-Body Force Production, Alyssa Varanoske

Electronic Theses and Dissertations

INTRODUCTION: Ultrasound assessment of the lower body typically encompasses 10-15 minutes of supine rest prior to examination because of the potential influence of gravitational fluid shifts on tissue size and composition. However, examination of the vastus lateralis (VL) muscle requires individuals to lay in the lateral recumbent position, and this change in position may influence muscle morphological characteristics and their ability to predict muscle function. PURPOSE: The purpose of this investigation was to examine the effect of rest position on ultrasound-derived morphological characteristics of the VL and to determine whether or not rest position affects the relationships between muscle morphological …

Kinetic And Kinematic Characteristics Of Accentuated Eccentric Loading, John Wagle

Electronic Theses and Dissertations

The current investigation was an examination of the kinetic and kinematic characteristics of the back squat using accentuated eccentric loading (AEL) and cluster set programming strategies. Trained male subjects (age = 26.1 ± 4.1 years, height = 183.5 ± 4.3 cm, body mass = 92.5 ± 10.5 kg, back squat to body mass ratio = 1.8 ± 0.3) volunteered to complete four different load condition sessions involving traditionally loaded straight sets (TL), traditionally loaded cluster sets (TLC), AEL cluster sets (AEC), and AEL straight sets where only the first repetition of each set used eccentric overload (AEL1). The use of …

Effects Of A 3-Week High-Fat-Low-Carbohydrate Diet On Lipid And Glucose Profiles In 8 Experienced, Middle-Age Male Runners, Eric K. O'Neal, Ashton F. Smith, Alexander J. Heatherly, Lauren G. Killen, Hunter S. Waldman, Angela Hollingsworth, Yunsuk Koh

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 786-799, 2019. This study examined glucose and lipid marker responses following a 3-week, ad libitum low-carbohydrate-high-fat diet (LCHF; ~70% kcals from fat, <50 g/day of net carbohydrates) versus the habitual mixed macronutrient diet (HMD) of eight middle-age, trained male runners (40 ±10 years; V̇O₂peak = 49 ±4 mL·kg^-1·min^-1). Blood was drawn at 0600 from an antecubital vein after an overnight fast under conditions of no exercise/ heat stress (NEXH; 48 h of restriction from intense exercise) or 24-h after exercise/heat stress (EXH; 60 min run in hot conditions plus 5-km time trial) for both dietary conditions. Glucose improvement during LCHF approached but did not reach statistical significance (p = 0.07). …

Obesity Affects Submaximal Oxygen Uptake-Heart Rate Relationship And Exercise Economy Differently In Pre And Postpubescent Boys And Girls, Eric Rivas

International Journal of Exercise Science

International Journal of Exercise Science 12(3): 748-763, 2019. The purpose of this study was to develop regression equations for estimating the intensity of the exercise work rate (relative peak oxygen uptake-heart rate [%VO₂-HR]) and the metabolic energy expenditure (MEE) for exercise prescription and rehabilitation medicine that are specific to children. This study took into account that the specific data in terms of obesity, sex, and pubertal status are currently unavailable. Our hypothesis was that obesity would affect the submaximal exercise the oxygen uptake (VO₂), heart rate (HR), and metabolic energy expenditure (MEE), and exercise economy (ExEco). …

Too Much Workplace Sitting: A Brief Historical Perspective, Raymond Jones, Daniel P. Credeur, Stephanie M. Mccoy

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 777-785, 2019. Sedentary behavior is a risk factor for the development of chronic diseases, especially those of cardiovascular and metabolic origins. Prolonged sitting is one of the most common sedentary behaviors among adults. Individuals sit for hours every day for several reasons, including work and or physical limitations. Historical accounts regarding the negative health effects of prolonged sitting began with early epidemiological studies, which sparked a breakout of research examining this behavior in the workplace setting. Understanding the risks associated with prolonged workplace sitting is important when considering workplace interventions, such as sit-stand workstations. …

Cardiovascular Disease Risk Factors And Physical Fitness In Volunteer Firefighters, Zachary T. Martin, Rebecca A. Schlaff, Jade K. Hemenway, Jillian R. Coulter, Jeremy L. Knous, John E. Lowry, Joshua J. Ode

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 764-776, 2019. Forty-seven percent of volunteer firefighter line of duty deaths are caused by cardiovascular events. Aggressive cardiovascular disease (CVD) risk factor reduction and improved physical fitness could reduce CVD mortality within this population. We assessed CVD risk factors and physical fitness in a large cohort of volunteer firefighters to help establish a health and fitness profile of this population, which may serve as evidence for the need to initiate programs aimed at reducing morbidity and mortality caused by CVD in the volunteer fire service. Seventy-four male volunteer firefighters were assessed for eight CVD …

Effects Of Whole-Body Vibration On Flexibility And Stiffness: A Literature Review, Brannen Fowler, Turner Palumbo, Brent Feland, Jonathan Blotter

International Journal of Exercise Science

International Journal of Exercise Science 12(3): 735-747, 2019. The effects of whole-body vibration (WBV) on flexibility and muscle stiffness are focused areas of research. Many studies have been performed over a large range of vibratory conditions and have reported varied results on effectiveness. When reviewing the published literature, it is difficult to track the vibration parameters that have positive effects and which have negative or no effects. In writing this paper,over 80 articles were evaluated, 24 of which met the inclusion requirements. The data gathered in the articles were used to develop charts that illustrate the vibration conditions that elicit …

The Impact Of Power Training On Balance And Visual Feedback Removal, Juliana Bouton

Senior Honors Theses

Because power training has been known to augment stability, the purpose of this study was to assess whether the removal of visual input affects lower limb muscle power production in young women who are resistance trained to the same degree it affects the untrained. This provided insight as far as the need for resistance training protocols in a largely untrained visually impaired population. To study this, fourteen college-aged female participants (18-23 years) performed a seated double-leg press on a leg sled machine, isolating power production of the lower limbs. After establishing baselines, which involved finding an average of power produced …

Comparison Of Steady State Exercise And Interval Training On Pitching Performance In Collegiate Baseball Players: A Pilot Study, Robert Rabena, Ryan Moran

International Journal of Exercise Science

International Journal of Exercise Science 12(6): 726-734, 2019. Traditionally, a baseball pitcher’s in-season conditioning between starts has consisted of steady state exercise. Little to no research exists on the effects of interval training on pitching performance. The purpose of this study was to examine the difference between steady state exercise (SSE) and interval training (IT) on exercise and pitching performance in collegiate baseball pitchers following an 11-week program. A total of 13 collegiate baseball pitchers were randomly assigned to either the SSE or IT group and tested pre- and post-season on a one-mile run, 30-m sprint, pitching velocity, walks plus …

The Influence Of A Slow-Breathing Protocol On Heart Rate And Blood Pressure From Exercise In Moderately Trained Females, Emily L. Zumbro, Greg A. Ryan, Stephen J. Rossi, John L. Dobson

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 714-725, 2019. Heart rate recovery (HRR) and blood pressure recovery (BPR) from exercise are both important indicators of health and fitness and are strongly associated with cardiovascular disease. The purpose of this study was to compare the effects of a slow-breathing technique, upright passive recovery (PASS), and active recovery (ACT) on HRR and BPR from exercise. Nine moderately trained, college-aged (20.22 ± 0.97 yrs) female participants cycled three times on an ergometer for 15 mins at 70% of their heart rate maximum (HR_max), each of which was followed by one of three …

Endothelial, Cardiovascular, And Performance Responses To L-Arginine Intake And Resistance Exercise, Daniel M. Streeter, Kara A. Trautman, Tylor W. Bennett, Lauren E. Mcintosh, James W. Grier, Sherri N. Stastny, Kyle J. Hackney

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 701-713, 2019. The purpose of this study was to examine the acute endothelial, cardiovascular, and performance responses to L-arginine intake by assessing flow-mediated dilation (FMD) and various indicators (e.g., heart rate, heart rate variability (HRV), blood pressure, torque) both before and after resistance exercise. Thirty (15 male, 15 female) physically active participants (mean ± SD: age 20.4 ± 1.8 years, height 176.9 ± 10.2 cm, body mass 76.0 ± 12.2 kg) volunteered for a randomized, cross-over, double-blind, placebo-controlled clinical trial. Participants completed five sets of elbow extension-flexion exercise after consumption of either 3 g …

Power Output In Rugby Players Comparing Unilateral And Bilateral Isotonic Upper-Body Resistance Exercise, Evan Nakachi, James D. George, Allen Parcell, Dennis Eggett, Brent Feland

International Journal of Exercise Science

International Journal of Exercise Science 12(6): 691-700, 2019. Bilateral deficit (BLD) occurs when the internal muscular force generated during simultaneous bilateral limb exercise is lower than the sum of internal muscular forces generated during separate right limb and left limb unilateral exercise, while attempting to oppose the same total external load. Numerous BLD studies have evaluated force output differences during exercise; however, no study has determined whether BLD exists when generating power during isotonic upper-body exercise. To address this, we measured and compared power output across unilateral and bilateral isotonic upper-body exercise. Seventeen college male rugby players (age = 21.8 …

Comparison Of The Effects Of Linear And Non-Linear Resistance Training Periodization On Morphofunctional Capacity Of Subjects With Different Fitness Levels: A Systematic Review, Rafael M. Pitta, Carla G. S. Pinto Montenegro, Roberta L. Rica, Danilo Sales Bocalini, Ramires A. Tibana, Jonato Prestes, Whitley J. Stone, Aylton J. Figueira Jr.

International Journal of Exercise Science

International Journal of Exercise Science 12(4): 666-690, 2019. Resistance training (RT) is recognized as an efficient method to improve muscle strength, power, hypertrophy; all are fundamental components of functional health and quality of life. Variables of RT such as volume, intensity, density, rest interval, duration, exercise order and selection, training frequency, and periodization models (i.e. linear periodization (LP), reverse linear periodization (RLP), block periodization (BP), and nonlinear periodization (NLP): undulating periodization (UP) and weekly undulating periodization (WUP)) are manipulated to potentiate musculoskeletal adaptations. The aim of the present study was to conduct a systematic review of studies comparing different periodization …

The Effect Of Exercise Order In Circuit Training On Muscular Strength And Functional Fitness In Older Women, Diogo Correia Cardozo, Belmiro Freitas De Salles, Pietro Mannarino, Ana Paula Sena Vasconcelos, Humberto Miranda, Jeffrey M. Willardson, Roberto Simão

International Journal of Exercise Science

International Journal of Exercise Science 12(4): 657-665, 2019.The purpose of this study was to analyze the effect of different orders of exercises in circuit training on strength and functional fitness in older women over a 12-week period. After 10 repetition maximum (10-RM) and functional fitness baseline testing, thirty older women were randomly assigned into two groups. The exercise order for Group 1 was leg press, wide-grip lat pulldown, knee extension, pec deck fly, plantar flexion and triceps extension; Group 2 performed the same exercises, but in the opposite order: triceps extension, plantar flexion, pec deck fly, knee extension, wide-grip …

Trunk Muscle Activation During Dynamic Sling Training Exercises, Tobias Morat, Denis Holzer, Rieke Trumpf

International Journal of Exercise Science

International Journal of Exercise Science 12(1): 590-601, 2019. The purpose of this study was to examine the level of trunk muscle activation to characterize different dynamic sling training exercises. Thirty-six young adults (25±3 years, 1.78±0.1 m, 71.5±10.4 kg) performed six different sling training exercises while muscle activation of eight different trunk muscles was measured unilaterally by surface electrodes. Four of the exercises were conducted at two different difficulty levels (an easy and a hard version) by changing the body angle. The six sling training exercises differed regarding muscle activation, with significant differences (p< 0.05) between the three body parts (front, side, back). High muscle activations (76-87%) of the (front) trunk flexor muscles were measured. The back muscles tested reached more than half of their peak reference trial values only during one exercise tested. Regarding the side muscles, three of the sling exercises achieved muscle activations of 60% and higher (66-92%). All eight trunk muscles tested demonstrated a significantly (p< 0.05) higher muscle activation in the harder version compared with the easy version. Based on the results, the sling training exercises tested in this study seem to be most effective for the abdominal muscles. As assumed based on the former literature, changing the body angle during sling training exercises is shown to be a feasible way of adjusting the intensity of sling training. This could potentially be used in longitudinal sling training studies to assure a controlled, progressively increasing training intervention.

The Impact Of Cell Phone Texting During Aerobic Exercise On Measures Of Cognition, Michael J. Rebold, Mallory S. Kobak, Cody A. Croall, Emily A. Cumberledge, Matthew T. Dirlam, Timothy P. Sheehan

International Journal of Exercise Science

International Journal of Exercise Science 12(5): 646-656, 2019. This study assessed the effect of cell phone texting during a 30-minute bout of cycle ergometer exercise on measures of cognition (i.e., reaction time and accuracy). Twenty-eight college students participated in two conditions (cell phone and no cell phone). Reaction time and accuracy were assessed pre- and post-exercise with the use of the Stroop test. Reaction time was significantly worse (p < 0.001) in the cell phone condition from pre- (1003.75 ± 178.04 ms) to post-exercise (1124.46 ± 238.55 ms). Reaction time was significantly better (p < 0.001) in the no cell phone condition from pre- …