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10,035 full-text articles. Page 6 of 374.

Impact Of Load Carriage On Metabolic Efficiency, Tyson Ngatikaura, Shane Draper, Lily Poulton, Ally Sipple, Tyler Standifird, Andrew Creer 2022 Utah Valley University

Impact Of Load Carriage On Metabolic Efficiency, Tyson Ngatikaura, Shane Draper, Lily Poulton, Ally Sipple, Tyler Standifird, Andrew Creer

International Journal of Exercise Science: Conference Proceedings

Load carriage is a crucial detail of long-distance running, especially when it comes to ultra-marathon distances (>26.2 miles). Longer distances require larger loads to carry fluids and nutrition to maintain performance during these events. Running packs fitted close to the torso are the most popular methods for carrying 1-3 L of fluid, additional food, and gear; however, little is known to what extent load mass may impact running performance. PURPOSE: To identify at which point relative load mass (% of body mass) begins to negatively impact submaximal metabolic efficiency. METHODS: To date, 7 active runners (≥3 days/week, ≥16.09 km/week …


Dietary Magnesium Intake On Heart Rate And Time-To-Fatigue During Hiit Exercise: A Pilot Study, Brian Neff, Jared Moore, George Salem FACSM 2022 University of Southern California

Dietary Magnesium Intake On Heart Rate And Time-To-Fatigue During Hiit Exercise: A Pilot Study, Brian Neff, Jared Moore, George Salem Facsm

International Journal of Exercise Science: Conference Proceedings

In high intensity interval training (HIIT), bouts of intense work are alternated with less intense periods. HIIT provides an effective stimulus to increase the volume of exercise at or above 90% heart rate maximum (HRmax). Magnesium (Mg) modulates energy metabolism and enzymatic processes. Studies suggest that Mg assists oxidative transport, improves glucose availability, delays lactate accumulation, and reduces inflammation. A gap exists in understanding how Mg affects HIIT. Moreover, the influence of a Vegan (VD) vs Omnivore (OD) diet on HIIT performance outcomes (e.g., heart rate [HR] and time-to-fatigue [TTF]), has yet to be investigated. PURPOSE: This …


The Effect Of Sleep Quality On Profile Of Mood, Physiological Responses, And Athletic Performance, Sarah Nash, Matthew Fowler, Bulent Sokmen 2022 Sonoma State University

The Effect Of Sleep Quality On Profile Of Mood, Physiological Responses, And Athletic Performance, Sarah Nash, Matthew Fowler, Bulent Sokmen

International Journal of Exercise Science: Conference Proceedings

While the extent of an athlete’s physiological adaptations varies due to a range of external factors, sleep deprivation has been proven to negatively affect one’s training and, ultimately, one’s overall athletic success. Sleep deprivation, either for a short or prolonged period of time, also leads to adverse psychological effects, as measured by the alteration of genes in the brain. PURPOSE: This study investigates how both normal sleep and sleep deprivation affect an athlete’s recovery, overall skeletal muscle performance, and mental state. METHODS: Using a randomized-crossover design, 7 healthy individuals, 3 males and 4 females, with at least 1 …


Can Cerebral Hemodynamics Explain The Changes In Cognition Associated With Wearing A Facemask During Exercise?, Axel Munoz, Stefan Keslacy, Viviana Garcia, Ceren Acik 2022 California State University, Los Angeles

Can Cerebral Hemodynamics Explain The Changes In Cognition Associated With Wearing A Facemask During Exercise?, Axel Munoz, Stefan Keslacy, Viviana Garcia, Ceren Acik

International Journal of Exercise Science: Conference Proceedings

The use of facemasks while exercising raises concerns about oxygen supply. Recent studies have found a decrease in exercise performance. An increased HR, RPE, and laborious breathing were reported when exercising with a mask. However, there is a knowledge gap on exercising with a mask on brain function. PURPOSE: to evaluate the effect of wearing a KN95 mask on cerebral hemodynamics and cognitive function. METHODS: 4 subjects participated in this preliminary study. They visited the lab twice and we randomized wearing a mask. Subjects completed a computerized Wisconsin Card Sorting Test (WCST, Psychtoolkit.org) before, during, and 2’ after an …


Are Race And Ethnicity Associated With How Hard The Heart Works During Submaximal Exercise? An Nhanes Study, Kiese Mpongo, Jayson Gifford 2022 Brigham Young University

Are Race And Ethnicity Associated With How Hard The Heart Works During Submaximal Exercise? An Nhanes Study, Kiese Mpongo, Jayson Gifford

International Journal of Exercise Science: Conference Proceedings

Previous studies have indicated racial/ethnic differences in the vasodilator and blood pressure responses to exercise, but the extent to which race/ethnicity impacts how hard the heart works (i.e., rate pressure product, RPP) during a given submaximal exercise is unknown. PURPOSE: Determine the impact of race/ethnicity on the work of the heart (i.e., RPP) during submaximal exercise. METHODS: Exercise data from the 2003-2004 NHANES cohort were examined. Specifically, 189 Black Americans (51% female), 181 Mexican Americans (53% female) and 370 (56% female) White Americans completed two, 3-minutes stages of submaximal treadmill exercise. Blood pressure, heart rate and …


Distinguishing Increased Adiposity And/Or Aerobic Deconditioning As Moderators Of Low Vo2peak In Obese Men, Jeff M. Moore, Carrie Ferguson, Molly M. Baldwin, Ronald S. Swerdloff, Christina Wang, Wei Yan, Harry B. Rossiter FACSM 2022 The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center

Distinguishing Increased Adiposity And/Or Aerobic Deconditioning As Moderators Of Low Vo2peak In Obese Men, Jeff M. Moore, Carrie Ferguson, Molly M. Baldwin, Ronald S. Swerdloff, Christina Wang, Wei Yan, Harry B. Rossiter Facsm

International Journal of Exercise Science: Conference Proceedings

Peak oxygen uptake (V̇O2peak) in a cardiopulmonary exercise test (CPET) is a strong predictor of morbidity, mortality, and quality of life. V̇O2peak in obese individuals is typically below the lower limit of normal (2 transport and utilization, i.e. aerobic deconditioning; or both. We hypothesized a modified CPET, to measure the fraction of maximum isokinetic power that can be supported by aerobic metabolism, will distinguish between adiposity and deconditioning effects on V̇O2peak. PURPOSE: To compare V̇O2peak and isokinetic neuromuscular performance in obese vs non-obese men. METHODS: A modified CPET with maximal (3 s) isokinetic cycling …


A Comparison Of Swimming Economy Between Two Full-Sleeve Wetsuits, Herbert Monroy-Chacon, Brian S. Chang, Juan P. Lindo, Alejandra Sanchez, Angel Benitez, M Selvan Joseph, George H. Crocker 2022 California State University, Los Angeles

A Comparison Of Swimming Economy Between Two Full-Sleeve Wetsuits, Herbert Monroy-Chacon, Brian S. Chang, Juan P. Lindo, Alejandra Sanchez, Angel Benitez, M Selvan Joseph, George H. Crocker

International Journal of Exercise Science: Conference Proceedings

A wetsuit is an important piece of equipment that a triathlete uses during their swim-bike-run race. Wetsuits differ based on style (e.g., full-sleeve or sleeveless), manufacturer and price. PURPOSE: The purpose of this study was to compare swimming economy in two full-sleeve wetsuits in a group of recreational swimmers and triathletes. METHODS: Nine men (34.3 ± 13.3 years old) and six women (37.8 ± 16.0 years old) completed a progressive swim test to exhaustion in a swim flume without a wetsuit to determine their peak rate of oxygen consumption (VO2peak). This was followed by three …


Body Mass Index Superior To Body Adiposity Index In Predicting Adiposity In Male Collegiate Athletes, Isaiah Mews, Payton Price, Ruthie larson, Sofia Harman, Annika Grams, Anthony Acevedo, Zachary Ziegler 2022 Grand Canyon University

Body Mass Index Superior To Body Adiposity Index In Predicting Adiposity In Male Collegiate Athletes, Isaiah Mews, Payton Price, Ruthie Larson, Sofia Harman, Annika Grams, Anthony Acevedo, Zachary Ziegler

International Journal of Exercise Science: Conference Proceedings

BMI is moderately correlated with %Fat and has been suggested to be inadequate at predicting overfat status in male collegiate athletes.The Body Adiposity Index (BAI) is an alternative anthropometric measurement suggested to be superior to BMI at predicting adiposity but has not been well assessed within different collegiate sports. PURPOSE: The purpose of this study was to determine if BAI is superior to BMI in predicting %Fat in male collegiate athletes. METHODS: Collegiate male rugby and baseball players were invited into the laboratory for measurements of height, weight, and %Fat via BOD POD. BAI was calculated as Hip …


Effects Of Time-Restricted Exercise On Training Induced Adaptations In Mice, Graham R. McGinnis, Michael Dial, Elias M. Malek, Greco Neblina, Austin Cooper 2022 University of Nevada Las Vegas

Effects Of Time-Restricted Exercise On Training Induced Adaptations In Mice, Graham R. Mcginnis, Michael Dial, Elias M. Malek, Greco Neblina, Austin Cooper

International Journal of Exercise Science: Conference Proceedings

Recent studies have shown that the time of day that exercise is performed can alter the physiological and molecular response. However, very few studies have investigated the longitudinal effects of time-of-day dependent training. Identification of an optimal exercise timing could lead to subsequent exercise prescriptions to elicit specific adaptations based on desired outcomes in healthy or disease populations.

PURPOSE: The purpose of this study was to determine if voluntary exercise performed at different times of day would alter the physiological response to training. METHODS: Male C57BL/6 mice (Jackson Labs) housed on a strict 12:12 light dark cycle performed …


Measured Thoracic Gas Volume Versus Two Predictions, Jacob McBride, Dale R. Wagner, Steven Spencer, Bradley Penrose, Brooklyn Murri, Edward M. Heath 2022 Utah State University

Measured Thoracic Gas Volume Versus Two Predictions, Jacob Mcbride, Dale R. Wagner, Steven Spencer, Bradley Penrose, Brooklyn Murri, Edward M. Heath

International Journal of Exercise Science: Conference Proceedings

Body composition, or one’s fat mass relative to total mass, is important to a person’s health and physical performance. One method to measure body composition is the Bod Pod air displacement plethysmograph. To determine body volume from the Bod Pod, thoracic gas volume (TGV), or the volume of air in the lungs during a normal breath, must be measured or predicted. PURPOSE: The intent of this study was to compare measured TGV to two predictions: one from the Bod Pod (TGVBP) that makes assumptions about functional residual capacity and tidal volume, and one from a recent publication …


The Effect Of Age And Sex On Lower Extremity Joint Power Coordination, Isabella G. Martinez, Kylie B. Garcia, Michele LeBlanc 2022 California Lutheran University

The Effect Of Age And Sex On Lower Extremity Joint Power Coordination, Isabella G. Martinez, Kylie B. Garcia, Michele Leblanc

International Journal of Exercise Science: Conference Proceedings

Previous research has provided conflicting results regarding interjoint coordination during a squat jump for young and old adults. In particular, researchers have noted if a proximal-to-distal sequencing (PDS) pattern characterized by hip, then knee, then ankle movement was utilized. Argaud et al. (2019) concluded that both groups used a PDS pattern while Haguenauer et al. (2005) reported that older adults exhibited a more simultaneous strategy. However, both of these studies only investigated male subjects. PURPOSE: The purpose of this study was to determine if there are differences in joint power sequencing between males and females and between young and older …


Combined Grape Seed Extract And L-Citrulline Supplementation Improves Cycling Time Trial Performance, Edwin Marquez, Mariah Yaggi, Karina Macias, Natalie Nawfal, Johnny Huatran, Samuel Hernandez, Jong-Kyung Kim 2022 California Baptist University

Combined Grape Seed Extract And L-Citrulline Supplementation Improves Cycling Time Trial Performance, Edwin Marquez, Mariah Yaggi, Karina Macias, Natalie Nawfal, Johnny Huatran, Samuel Hernandez, Jong-Kyung Kim

International Journal of Exercise Science: Conference Proceedings

Studies have shown that L-Citrulline alone improves nitric oxide (NO) production which is beneficial for vasodilation or increasing skeletal blood flow. Grape seed extract (GSE) also has been shown to increase the production of NO via activation of NO synthase, reducing peripheral resistance during exercise. PURPOSE: The aim of this study was to determine if acute administration of the combined GSE and L-Citrulline supplements had a greater effect on exercise performance compared to taking either supplement alone. METHODS: In a randomized cross-over design, 12 healthy male subjects aged between 18 to 30 years were divided into four groups: Placebo (starch), …


College Student Sleep And Quality Of Life, Brandon E. Madrid, Sarah Dunn 2022 California State University, San Bernardino, Palm Desert

College Student Sleep And Quality Of Life, Brandon E. Madrid, Sarah Dunn

International Journal of Exercise Science: Conference Proceedings

Lack of sleep has been found to negatively impact one’s health. Not only can a lack of sleep make one feel tired or impact their mood, there are many other significant health problems that result from less sleep. On the other hand, getting adequate sleep offers several health benefits which may positively influence one’s quality of life. PURPOSE: The aim of the study was to examine the relationship between sleep and quality of life in college students over the age of 18 years old. METHODS: College students of all genders and ethnicities from 18 years of age and older were …


Sex Differences In The Superficial Femoral Artery Occlusion Pressure, DANIELA LOPEZ, CHASE BLAZZARD, HANNAH HART, NICOLE KASPER, RYAN LACEY, SHAY RICHARDS, PAT R. VEHRS FACSM 2022 Brigham Young University, Provo UT

Sex Differences In The Superficial Femoral Artery Occlusion Pressure, Daniela Lopez, Chase Blazzard, Hannah Hart, Nicole Kasper, Ryan Lacey, Shay Richards, Pat R. Vehrs Facsm

International Journal of Exercise Science: Conference Proceedings

The measurement of arterial occlusion pressure (AOP) prior to the use of blood flow restriction during exercise is recommended. Not all previous studies that have included both male and female participants have reported sex differences in AOP. PURPOSE: The purpose of this study was to compare the superficial femoral artery AOP of the dominant and non-dominant legs between males and females. METHODS: Ultrasound (GE LOGIQ) was used to detect blood flow through the superficial femoral artery of both legs in a random order in 20 males and 20 females. Circumference of the upper thigh, leg volume, and skinfold thickness were …


How Does Maximal Aerobic Capacity Predict The Performance Of Rotc Cadets On The Acft, Ruth Larson, Annika Grams, Sofia Harman, Sara Thomasson, Kaitlyn Wabakken, Katelynn Brock, Payton Price, Anthony Acevedo, Zachary Zeigler 2022 Grand Canyon University

How Does Maximal Aerobic Capacity Predict The Performance Of Rotc Cadets On The Acft, Ruth Larson, Annika Grams, Sofia Harman, Sara Thomasson, Kaitlyn Wabakken, Katelynn Brock, Payton Price, Anthony Acevedo, Zachary Zeigler

International Journal of Exercise Science: Conference Proceedings

The Army Combat Fitness Test (ACFT) is a newly developed test that assesses the combat readiness of U.S. Army soldiers. Maximal aerobic capacity (VO2max) characteristics vary between soldiers and have the ability to affect performance outcomes. The purpose of this cross-sectional study is to determine if VO2max can predict performance outcomes of the ACFT in ROTC cadets. Methods: ROTC cadets (44 males, 15 females; aged 21.06 ± 3.6 years) completed the 6-event ACFT (3-repetition maximum trap-bar deadlift [MDL], standing power toss [SPT], hand-release pushups [HRPU], sprint-drag-carry shuttle run [SDC], plank [PLK], and 2-mile run [2MR]). The cadets …


Effect Of Primary Power Source On The Load Voltage Relationship In Load Cells From An Instrumented Scrum Machine, Mikaela N. Kirkpatrick, Ashley Landa, Jherrica Phillips, Marcus Pulido-Ojeda, Eric Martin, George Beckham, Steven B. Kim 2022 California State University Monterey Bay

Effect Of Primary Power Source On The Load Voltage Relationship In Load Cells From An Instrumented Scrum Machine, Mikaela N. Kirkpatrick, Ashley Landa, Jherrica Phillips, Marcus Pulido-Ojeda, Eric Martin, George Beckham, Steven B. Kim

International Journal of Exercise Science: Conference Proceedings

To measure force generated by rugby union players during the scrum, we instrumented a scrum machine using S-type load cells for voltage force data collection. Data collection may take place in a variety of settings with varying access to primary power. The voltage outputs from electronic equipment may change when using battery versus AC power. Purpose: To compare the load-voltage relationship in S-type load cells between wall outlet AC power and a lithium ion battery pack and inverter. Methods: Dead weight calibrations of two load cells under two power supply conditions were performed up to 200kg. Voltage data was obtained …


A Novel Use Of Concussion Protocols In The Management Of The Cognitive Effects In Long Haul Covid, Rodiel Kirby Baloy PT, DPT, EdS, MS, Olivia S. Tarca BS, SPT, Harold Lueders SPT, Angel Ramos SPT 2022 The College of St. Scholastica

A Novel Use Of Concussion Protocols In The Management Of The Cognitive Effects In Long Haul Covid, Rodiel Kirby Baloy Pt, Dpt, Eds, Ms, Olivia S. Tarca Bs, Spt, Harold Lueders Spt, Angel Ramos Spt

International Journal of Exercise Science: Conference Proceedings

Some individuals diagnosed with Long Haul COVID (lCOVID) have concurrently reported cognitive issues such as confusion, forgetfulness, decreased attention time, and difficulty focusing. This series of symptoms is termed brain fog. PURPOSE: Patients with reports of brain fog may benefit from the utilization of protocols associated with concussion rehabilitation to reduce the effects of confusion, frustration, and difficulty focusing on exercise instructions. This study looked at the novel application of the concussion rehabilitation protocol to mitigate the cognitive issues linked to brain fog through a course of physical therapy for lCOVID recovery. METHODS: This case report tracked a 57-year-old female …


The Effects Of Alternate Day Modified Fasting On Diet And Weight Loss: A Pilot Study, Dallin Kemp, Bruce Bailey, Landon Deru, Andrew Stevens 2022 Brigham Young University

The Effects Of Alternate Day Modified Fasting On Diet And Weight Loss: A Pilot Study, Dallin Kemp, Bruce Bailey, Landon Deru, Andrew Stevens

International Journal of Exercise Science: Conference Proceedings

Alternate day fasting has been shown to be an effective strategy for weight loss and improving metabolic health but adherence is challenging. Alternate day modified fasting (ADMF) is an alternative approach that allows for a meal (~25% of calories) to be consumed on the fast day to help make the fasting protocol more sustainable. PURPOSE: The objective of this study was to examine the impact of a 14-day alternate day modified fast on energy intake, macronutrient composition and body composition. METHODS: Forty two participants (24 male/18 female) completed 3 days of baseline testing followed by a 14-day treatment period where …


Effect Of Air Resistance On Braking And Propulsive Impulses During Treadmill Running., Luke Johnston, Jared Steele, Luke Vankeersbilck, Iain Hunter 2022 Brigham Young University

Effect Of Air Resistance On Braking And Propulsive Impulses During Treadmill Running., Luke Johnston, Jared Steele, Luke Vankeersbilck, Iain Hunter

International Journal of Exercise Science: Conference Proceedings

Treadmill running is a convenient option for runners looking to avoid adverse environmental conditions or that prefer a gym setting. Outdoor running includes air resistance, whereas treadmill running typically does not. Very little research has been focused on the influence of air resistance and its role on kinetic factors during running. PURPOSE: To determine how anterior/posterior impulses change due to air resistance during two different treadmill speeds. METHODS: A wind tunnel was placed 0.61m from the edge of a force instrumented treadmill (Bertec, Boston, MA) while attempting to run 1.12m from the opening of it. Seven subjects ran …


The Effects Of Alternate-Day Fasting On Sleep In Poor Sleepers, Cameron G. Jacobsen 2022 Brigham Young University

The Effects Of Alternate-Day Fasting On Sleep In Poor Sleepers, Cameron G. Jacobsen

International Journal of Exercise Science: Conference Proceedings

Alternate day modified fasting is an intermittent fasting approach that provides an effective strategy for weight loss. While research has shown alternate day modified fasting to be an affective weight loss strategy, less is known about its impact on sleep quality. PURPOSE: The objective of this study was to examine the impact of a 14-day alternate day modified fast on sleep patterns in participants who were classified as ‘poor sleepers.’ METHODS: Forty two participants (24 male/18 female) completed 3 days of baseline testing followed by a 14-day treatment period where they followed a modified alternate day fasting regimen that consisted …


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