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Articles 781 - 810 of 16401
Full-Text Articles in Entire DC Network
The Role Of The Exerkine Apelin In Age-Related Sarcopenia, Dillon R. Harris, Quinten W. Pigg, Daniela S. Inoue, Mariana Janini Gomes
The Role Of The Exerkine Apelin In Age-Related Sarcopenia, Dillon R. Harris, Quinten W. Pigg, Daniela S. Inoue, Mariana Janini Gomes
International Journal of Exercise Science: Conference Proceedings
Apelin is an exercise-induced peptide that declines with age and is positively associated with exercise-induced benefits in older individuals. This molecule may therein have a potential role in combatting sarcopenia—age-related progressive loss of muscle mass and strength—when combined with exercise; however, the molecular mechanisms behind its autocrine function remain unclear. PURPOSE: To investigate how aerobic exercise impacts skeletal muscle apelin signaling, focusing on its potential in counteracting the age-related loss of skeletal muscle. METHODS: 22 Fisher 344 male rats (3- and 21-month-old) were obtained from NIA rodent colonies. Experimental groups were randomly divided: young sedentary (Y, n=5); young …
Acute Vs. Chronic Response To Doxorubicin Treatment With Endurance Training In Non-Tumor-Bearing Rats, Quinten W. Pigg, Dillon Harris, Daniela Sayuri Inoue, Bertha F. Polegato, Carol R. Tonon, Mariana Janini Gomes
Acute Vs. Chronic Response To Doxorubicin Treatment With Endurance Training In Non-Tumor-Bearing Rats, Quinten W. Pigg, Dillon Harris, Daniela Sayuri Inoue, Bertha F. Polegato, Carol R. Tonon, Mariana Janini Gomes
International Journal of Exercise Science: Conference Proceedings
Doxorubicin (DOX) is a chemotherapy agent widely used to treat many types of cancer; however, DOX use is limited due to its adverse effects. While cardiotoxicity is the most well-recognized issue, skeletal muscle wasting and weakness is another significant adverse effect that can decrease quality of life, manifested clinically through weakness and exercise intolerance. PURPOSE: We aimed to investigate the effects of DOX treatment on exercise intolerance and muscle function in preclinical models of both acute and chronic effects of chemotherapy using non-tumor-bearing rats. We also investigated the preventive and therapeutic effects of endurance training in these models. METHODS: …
Visceral Adipose Tissue – A Comparative Analysis Of Dxa And Bioelectrical Impedance Analysis, Emmanuel Franco, Maria Quezada, Yuliana Sanchez-Trinidad, Kassandra Reyes, Aylin Barrera, Allison De La Vina
Visceral Adipose Tissue – A Comparative Analysis Of Dxa And Bioelectrical Impedance Analysis, Emmanuel Franco, Maria Quezada, Yuliana Sanchez-Trinidad, Kassandra Reyes, Aylin Barrera, Allison De La Vina
International Journal of Exercise Science: Conference Proceedings
Visceral adipose tissue (VAT), defined as the abdominal fat surrounding intraabdominal organs including the stomach, kidneys, and intestines, can be directly linked to the development of metabolic syndrome and increased mortality. CT and MRI are currently regarded as the most reliable modalities for estimating VAT area, however bioelectrical impedance analysis (BIA) and dual-energy X-ray absorptiometry (DXA) have emerged as more convenient and cost-friendly alternatives for obtaining VAT and other body composition values. PURPOSE: This study compared VAT areas gathered via DXA and BIA in a population of mostly Hispanic individuals, to assess the reliability and association of both modalities to …
The Influence Of Balance And Strength Training On Gait Symmetry In An Individual With Spastic Quadriplegic Cerebral Palsy, Madison Deitch, Vanessa Mikan Phd, Taylor Dean
The Influence Of Balance And Strength Training On Gait Symmetry In An Individual With Spastic Quadriplegic Cerebral Palsy, Madison Deitch, Vanessa Mikan Phd, Taylor Dean
International Journal of Exercise Science: Conference Proceedings
Cerebral palsy (CP) is a neurodevelopmental disorder that affects muscle tone, movement, and motor skills. Individuals with CP often experience challenges related to balance and postural control, which can affect their ability to perform functional tasks. Individuals with Spastic Quadriplegic CP (SQCP) have difficulty in maintaining balance and symmetrical weight distribution. Structured exercise programs incorporating balance training and strength exercises have been found to be effective in improving postural control and balance in children with CP. PURPOSE: This study aimed to evaluate the influence of balance and strength exercises on gait measures in a young adult with SQCP. METHODS: The …
Position-Specific Insights Into Weekly Training Load Variability In Soccer Athletes, Tyler B. Mccollum, Alexandra Brojanac, Erica Hollis, Jan-Joseph S. Rolloque, Yasuki Sekiguchi
Position-Specific Insights Into Weekly Training Load Variability In Soccer Athletes, Tyler B. Mccollum, Alexandra Brojanac, Erica Hollis, Jan-Joseph S. Rolloque, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
Monitoring training load (TL) is vital for optimizing athletic performance and reducing risk of injury by identifying changes in a player's condition and workload. However, there is limited literature comparing player positions and analyzing weekly workloads in relation to internal and external load metrics. PURPOSE: (1) Compare accumulated load and training monotony in external and internal load metrics between the first (1H) and second halves (2H) of the season; (2) analyze variations in these indicators by playing positions. METHODS: 38 semi-professional players (age: 23±2.05 years; height: 186.61±44.88 cm; weight: 77.23±10.29 kg) playing in 5 positions (central defender (CD=5), …
Neural Or Musculoskeletal: Which System Drives The Age-Related Decline In Walking Economy?, Brooke 'Measeles' Alanis, Negin Fallah, Ahan Mistry, Owen N. Beck
Neural Or Musculoskeletal: Which System Drives The Age-Related Decline In Walking Economy?, Brooke 'Measeles' Alanis, Negin Fallah, Ahan Mistry, Owen N. Beck
International Journal of Exercise Science: Conference Proceedings
Older adults typically consume 10 to 25% more metabolic energy than young adults while walking (decreased walking economy). The age-related decline in walking economy relates to impaired quality of life and is important to mitigate (or reverse). Yet, it is unestablished which factor(s) govern the age-related decline in the walking economy. Based on recent findings that older adult neural control strategies during walking likely increase their metabolic rate, we sought to test whether age-related metabolic differences persist during simple joint-level tasks. PURPOSE: The purpose of this study is to infer whether the musculoskeletal system directly affects the age-related decline in …
The Effect Of An Upper Body Warm Up Versus Passive Swim On 100 Meter Freestyle Times, William P. Celis
The Effect Of An Upper Body Warm Up Versus Passive Swim On 100 Meter Freestyle Times, William P. Celis
International Journal of Exercise Science: Conference Proceedings
Warming up before an athletic event is vital for ideal performance and injury prevention. However, the ideal type of warm-up is often debated. In swimming, previous research has demonstrated that in-water warm-ups generally provide better results compared to on-land warm-ups Yet, limited studies have directly compared the effects of land-based versus in-water warm-ups on swimming performance. PURPOSE: Therefore, the purpose of this study was to examine the effects of a 5-minute passive in-water warm-up versus a 5-minute dynamic land-based warm-up on 100-meter freestyle swim times. METHODS: Participants included 31 individuals (25 men and 6 women), 9 of whom …
Effects Of Minimalist Shoe Walking On Plantar Intrinsic Foot Muscle Strength And Size In Normal Healthy Adults: Preliminary Findings, Andrea Saenz, Alfredo Gil, Alexis C. Gant, Chueh-Lung Hwang, Mark D. Ricard
Effects Of Minimalist Shoe Walking On Plantar Intrinsic Foot Muscle Strength And Size In Normal Healthy Adults: Preliminary Findings, Andrea Saenz, Alfredo Gil, Alexis C. Gant, Chueh-Lung Hwang, Mark D. Ricard
International Journal of Exercise Science: Conference Proceedings
Walking in minimalist shoes has been shown to strengthen and increase the size of plantar intrinsic foot muscles (PIM). While previous research has examined the effects of an 8-week minimalist shoe walking protocol in runners, this protocol has not been observed in non-runners. PURPOSE: Examine the effects of an 8-week minimalist shoe training intervention on muscle size and strength in healthy non-runners. METHODS: Ten healthy young adults were recruited for this study and randomized equally to either the control group (age: 21±0.89 yr; BMI: 24.1±3.4 kg/m2) or minimalist shoe group (age: 21.4±2.1 yr; BMI: 23.1±3.4 kg/m …
Added Psychological Stress Significantly Increases Anxiety But Does Not Impact Stress Biomarkers In Response To Combined Mental And Physical Stress, Nathan M. Sutton, Stephanie Uriegas, Hunter Martaindale, Matthew J. Mcallister
Added Psychological Stress Significantly Increases Anxiety But Does Not Impact Stress Biomarkers In Response To Combined Mental And Physical Stress, Nathan M. Sutton, Stephanie Uriegas, Hunter Martaindale, Matthew J. Mcallister
International Journal of Exercise Science: Conference Proceedings
High Stress occupations are subject to significant health risk due to the exposure to a variety of stressors, specifically the exposure to concurrent stressors (i.e., combined mental and physical stress). Exposure to concurrent stressors has been shown to exacerbate the stress response, potentially resulting in cardiovascular strain, immune suppression, and inflammation. PURPOSE: The purpose of this study was to examine the effect of a concurrent stress challenge (CSC) on markers of stress, as well as perceived anxiety. METHODS: This study utilized a randomized control trial, in which fifty-four subjects (n=54) were randomly assigned to perform either exercise alone …
Sleep Duration And Sleep Quality As Season-Long Predictors Of Ratings Of Perceived Exertion And Psychological Wellbeing In Female Soccer Athletes, Maria E. Camargo M.S., Kelly M. Cheever Phd
Sleep Duration And Sleep Quality As Season-Long Predictors Of Ratings Of Perceived Exertion And Psychological Wellbeing In Female Soccer Athletes, Maria E. Camargo M.S., Kelly M. Cheever Phd
International Journal of Exercise Science: Conference Proceedings
Sleep is a critical factor in optimizing athletic performance and well-being. Sleep effects on physiological and psychological well-being have been examined through cross sectional studies, but limited research exists on the longitudinal impact that sleep has on well-being in collegiate athletes. PURPOSE: The purpose of this study was to explore daily fluctuations in subjective measures of psychological wellness and physiological stress (soreness, rating of perceived exertion (RPE)) across a competitive soccer season, and to examine the extent to which sleep duration and quality modify daily measures of wellness and stress in collegiate female soccer athletes. METHODS: Twenty female …
Hsp70 Expression, Cognition, And Pain Following A Single Bout Of Aerobic Exercise Or Passive Heating In Older Adults, Cayla E. Clark, Kelsi R. Lambright, Nicole Varone, George A. King, Brandon R. Rigby
Hsp70 Expression, Cognition, And Pain Following A Single Bout Of Aerobic Exercise Or Passive Heating In Older Adults, Cayla E. Clark, Kelsi R. Lambright, Nicole Varone, George A. King, Brandon R. Rigby
International Journal of Exercise Science: Conference Proceedings
Heat shock proteins (HSP) are cellular chaperones that regulate protein metabolism. Aging elicits reductions in HSP expression; however, elevated levels of HSP70 may be neuroprotective against the deleterious effects of aging. PURPOSE: To observe the concentration of HSP70 expression, cognitive performance, and self-perceived pain following one hour of aerobic exercise or whole-body passive heating in older adults. METHODS: Twenty-four older adults (68.1±4.6 yrs, 27.1±4.0 kg/m2, 12 female) randomly completed either one hour of moderate-intensity walking on a treadmill (TM), one hour of seated passive heating (HEAT) in a controlled environmental heat chamber (34 to 40ºC, 30% …
8-Weeks Of Moderate-Intensity Aerobic Exercise Fails To Improve Vo2max In Young Adults Born Preterm, Paige M. Childress, Heather L. Vellers, Joaquin Gonzales, Danielle Levitt, Danielle Moran, Addie M. Anderton, Abigail C. Ullmann
8-Weeks Of Moderate-Intensity Aerobic Exercise Fails To Improve Vo2max In Young Adults Born Preterm, Paige M. Childress, Heather L. Vellers, Joaquin Gonzales, Danielle Levitt, Danielle Moran, Addie M. Anderton, Abigail C. Ullmann
International Journal of Exercise Science: Conference Proceedings
Individuals born preterm have significantly impaired adaptability in maximal aerobic capacity (VO2 max) with exercise training. We have hypothesized that this impaired response is linked to immature mitochondrial development and maladaptation resulting from early birth. PURPOSE: This project is multifaceted with the overarching aim to measure mitochondrial respiration in peripheral blood mononuclear cells (PBMCs) and assess for potential mitochondrial genome variants and heteroplasmy that may explain poor adaptability in VO2 max with training. The purpose of this report is to confirm poor adaptability in VO2 max in preterm adults. METHODS: This is an ongoing project. Young …
Impact Of An Outdoor Physical Activity Intervention On Muscular Fitness In Adolescents, Khizra Khan, Joni A. Mettler, L. Kent Griffin, Lindsay E. Kipp
Impact Of An Outdoor Physical Activity Intervention On Muscular Fitness In Adolescents, Khizra Khan, Joni A. Mettler, L. Kent Griffin, Lindsay E. Kipp
International Journal of Exercise Science: Conference Proceedings
Physical inactivity among adolescents is a growing health concern. Innovative, engaging interventions are needed, such as after-school programs to promote physical activity and improve youths’ health, including muscular fitness. PURPOSE: The purpose was to evaluate the impact of an outdoor physical activity intervention on muscle strength, muscle endurance, and agility in middle school students. METHODS: The intervention included various physical activities (e.g., kayaking, orienteering/hiking, archery, disc golf, mountain biking), across 10 sessions over 5 weeks. Seven 6th and 7th graders (age: 11.7 ± 0.2 years; BMI: 24.7 ± 2.7) completed pre and post intervention assessments for …
Estimating Minute Ventilation And Inspiratory Flow To Trigger Exercise-Induced Laryngeal Obstruction (Eilo) In Pediatric Patients, Rebecca Brovina, John M. Robertson, Andreas Kreutzer
Estimating Minute Ventilation And Inspiratory Flow To Trigger Exercise-Induced Laryngeal Obstruction (Eilo) In Pediatric Patients, Rebecca Brovina, John M. Robertson, Andreas Kreutzer
International Journal of Exercise Science: Conference Proceedings
Exercise-induced respiratory symptoms hinder exercise participation and performance in adolescents. One cause is exercise-induced laryngeal obstruction (EILO). While EILO pathology is poorly understood, high airflow rates through the larynx appear necessary to elicit an episode. Exercise above 75% of peak work capacity reliably triggers EILO; however, the minute ventilation (V̇E) and mean inspiratory flow rates (VT/Ti) to trigger EILO are unknown. This information could influence diagnostic testing protocols, exercise prescriptions, and training programs. PURPOSE: The purpose of this ongoing study is to estimate the V̇E and VT/Ti required to trigger laryngeal closure …
Examining The Relationship Between Competition Stress And Performance In Collegiate Rodeo Bronc Riders Through Salivary Cortisol And Heart Rate, Tyler K. Handley, Jennifer L. Zoller, Chelsie J. Huseman, Lisa Colvin, William Storer, Amanda Baxter
Examining The Relationship Between Competition Stress And Performance In Collegiate Rodeo Bronc Riders Through Salivary Cortisol And Heart Rate, Tyler K. Handley, Jennifer L. Zoller, Chelsie J. Huseman, Lisa Colvin, William Storer, Amanda Baxter
International Journal of Exercise Science: Conference Proceedings
Competition stress significantly impacts the performance of athletes across various sports. Despite its unique demands, stress in rodeo athletes remains underexplored, largely due to the sport's nomadic and individualistic nature and its prior lack of mainstream attention. While comparisons can be drawn between the intermittent structure of rodeo and mainstream sports like baseball or football, the recent surge in rodeo's popularity has increased interest in optimizing athlete performance. PUROSE: The aim of this study was to identify and compare salivary cortisol concentration (SCC) and physical workloads experienced by riders and horses in practice and competition settings. Additionally, the study aims …
Intercranial Blood Flow Is Determined By Diastolic Blood Pressure, Kyle J. Hamlin, Marcela Guadiana, Camila Guadiana, Yunsuk Koh, Jose M. Moris
Intercranial Blood Flow Is Determined By Diastolic Blood Pressure, Kyle J. Hamlin, Marcela Guadiana, Camila Guadiana, Yunsuk Koh, Jose M. Moris
International Journal of Exercise Science: Conference Proceedings
A deeper understanding of cerebral hemodynamics at rest is warranted to identify pathological changes associated with maladaptive changes in cognition. The need stems from evidence supporting cortical hypoperfusion during early adulthood as a predictor of late adulthood Alzheimer’s disease. PURPOSE: To disseminate which physiometrics can aid at identifying changes in cerebral blood flow. METHODS: A total of 22 young (22.55 ± 2.58 years) men participated in this study. Ultrasound sonography (doppler & pulse wave) was utilized to assess the peak systolic (PS) and end diastolic (ED) velocity (cm/s), while simultaneously measuring the vessel diameter (cm) in the internal …
Exercise Pressor Reflex And Acute Vascular Response To Isometric Exercise With Or Without Blood Flow Restriction, Lin-Sheng Chen, Kazumasa Manabe, Yanbing Zhou, Jide Adebiyi, Tianyu Wang, Takanobu Okamoto, Hirofumi Tanaka
Exercise Pressor Reflex And Acute Vascular Response To Isometric Exercise With Or Without Blood Flow Restriction, Lin-Sheng Chen, Kazumasa Manabe, Yanbing Zhou, Jide Adebiyi, Tianyu Wang, Takanobu Okamoto, Hirofumi Tanaka
International Journal of Exercise Science: Conference Proceedings
Low-intensity exercise combined with blood flow restriction (BFR) is effective in improving muscle strength and hypertrophy. However, exaggerated exercise pressor reflex due to restricted venous outflow and metabolite accumulation triggering metaboreflex has been raised as a concern during BFR training. Additionally, the impact of BFR training on arterial vascular function remains highly controversial. PURPOSE: To evaluate hemodynamic responses to isometric exercise with and without BFR using the post-exercise ischemia (PEI) protocol and examine the acute changes in vascular function before and after BFR isometric exercise. METHODS: Nine apparently healthy young adults (5 females, 28±4 years) completed three sets …
Comparison Of Overground, Motorized Treadmill And Non-Motorized Treadmill Gait In Younger And Older Adults, Emily L. Chaires, Meghan Mccarthy, Breanna Steele, Scott P. Mclean
Comparison Of Overground, Motorized Treadmill And Non-Motorized Treadmill Gait In Younger And Older Adults, Emily L. Chaires, Meghan Mccarthy, Breanna Steele, Scott P. Mclean
International Journal of Exercise Science: Conference Proceedings
Previously we found that walking on a non-motorized treadmill (NMT) elicited greater EMG activity from plantar flexor muscles compared to walking overground (OG) and on a motorized treadmill (MT) in adults younger than 25 years of age. PURPOSE: To compare muscle activation patterns of lower extremity muscles between MT, NMT and overground (OG) walking in younger and older. METHODS: Twelve healthy older adults (55.4±4.1 yrs, 167.8±9.0 cm, 73.1±13.1 kg ) and 23 healthy younger adults (27.9±8.4 yrs, 169.9±8.4 cm, 72.9±16.5kg) completed separate walking trials for OG, MT and NMT modes at the preferred NMT speed. For EMG normalization participants also …
Weight Loss Increases Adipose Macrophage Cytokine Production And Adipose Bacterial Clearance, Mcarthur Bolden Iii, Xenia D. Davis, Edward R. Sherwood, Julia K. Bohannon, Heather L. Caslin
Weight Loss Increases Adipose Macrophage Cytokine Production And Adipose Bacterial Clearance, Mcarthur Bolden Iii, Xenia D. Davis, Edward R. Sherwood, Julia K. Bohannon, Heather L. Caslin
International Journal of Exercise Science: Conference Proceedings
Innate immune cells can develop memory-like qualities from an initial stimulus, which enhances their effector functions to a secondary challenge. Based on the initial stimuli, innate immune memory has been shown to improve pathogen defense or worsen chronic metabolic disease. We have previously shown that weight loss induces innate immune memory which may worsen diabetes risk following weight regain. However, it is not clear if weight loss induces any protection in infection. PURPOSE: The purpose of this study was to investigate the effect of diet-induced weight gain and loss on survival, bacterial clearance, and macrophage activation in a mouse model …
Rapid Onset Pressor Response In Young Healthy Hispanic Adults, Ashlesha Dalve, Ruby A. Nyarko, Justo Perez, Jasdeep Kaur
Rapid Onset Pressor Response In Young Healthy Hispanic Adults, Ashlesha Dalve, Ruby A. Nyarko, Justo Perez, Jasdeep Kaur
International Journal of Exercise Science: Conference Proceedings
Hispanic population is the fastest growing ethnic group in the U.S. and experiences a high prevalence of hypertension, a key risk factor of cardiovascular disease. Alterations in the regulation of blood pressure at the onset of exercise are evident in adults with hypertension and those with family history of hypertension. However, it is currently unknown whether such maladaptive pressor responses manifest during acute exercise in young Hispanic adults free from overt cardiovascular disease. PURPOSE: In this study, we examined the blood pressure response at the onset of static handgrip exercise in 19 Hispanic/Latino (H/La; 7 women) and 18 non-Hispanic White …
Investigating The Epigenetic Regulation Of Innate Immune Memory, Emily Nguyen, Heather L. Caslin
Investigating The Epigenetic Regulation Of Innate Immune Memory, Emily Nguyen, Heather L. Caslin
International Journal of Exercise Science: Conference Proceedings
Innate immune memory is the ability of innate immune cells, such as monocytes and macrophages, to develop “memory” that allows them to respond more efficiently when (re-)exposed to a second stimulus. Innate immune memory is driven by epigenetic changes, including histone methylation (H3K4me3) and acetylation (H3K27ac), which can activate gene transcription at inflammatory loci and drive enhanced activation to a second stimulus. While we have previously shown that macrophage cell cultures treated with palmitate exhibit increased cytokine production and metabolism (outcomes of innate immune), the specific epigenetic mechanisms regulating these changes have not been shown. PURPOSE: This study aimed …
Greater Oxygen Uptake And Respiratory Efficiency After 4 Weeks Of Aerobic Exercise Utilizing Nasal Breathing, Camila Guadiana, Marcela Guadiana, Kyle J. Hamlin, Yunsuk Koh, Jose M. Moris
Greater Oxygen Uptake And Respiratory Efficiency After 4 Weeks Of Aerobic Exercise Utilizing Nasal Breathing, Camila Guadiana, Marcela Guadiana, Kyle J. Hamlin, Yunsuk Koh, Jose M. Moris
International Journal of Exercise Science: Conference Proceedings
Engaging in routine aerobic exercise is essential to maintain a healthy respiratory performance. However, new evidence supports that utilizing nasal breathing (NB) over combined breathing (CB) during aerobic exercise sessions could provide greater respiratory adaptations due to its positive effect on alveolar gas exchange. PURPOSE: To determine what respiratory adaptations develop after 4 weeks of aerobic exercise utilizing NB in comparison to CB. METHODS: 22 men (21.55 ± 2.58 years) were randomized into the CB or NB group. Participants performed a pulmonary function test and a graded maximal aerobic exercise test (GXT) during Pre-training (V1), and after 4 weeks of …
Increasing The Incidence Of Type 2 Diabetes In Ucd-T2dm Female Rats, Chandni Bhagtaney, Austin Thornton, Milena Samora, Ali Mossayebi, Kimber L. Stanhope, Peter J. Havel D.V.M., Ph.D., Audrey J. Stone, Michelle L. Harrison
Increasing The Incidence Of Type 2 Diabetes In Ucd-T2dm Female Rats, Chandni Bhagtaney, Austin Thornton, Milena Samora, Ali Mossayebi, Kimber L. Stanhope, Peter J. Havel D.V.M., Ph.D., Audrey J. Stone, Michelle L. Harrison
International Journal of Exercise Science: Conference Proceedings
The prevalence of type 2 diabetes mellitus (T2DM) is higher for men compared with women, yet women present with a greater risk factor burden at the time of their diagnosis. Currently, research is lacking that addresses these sex-specific differences in disease onset and progression, research that is critical to understanding the pathophysiology of diabetes and developing optimal treatment strategies for both women and men. These same sex differences are present in animal models of T2DM. The paucity of suitable T2DM animal models is a barrier to investigations of these sex differences. The University of California Davis (UCD)-T2DM rat model, bred …
Voluntary Wheel Running Improves Glucose Homeostasis And Visceral Adiposity In Old Mice, Alexandra Canizales, David J. Buckley, Sogol Zahedi, Daniel W. Trott
Voluntary Wheel Running Improves Glucose Homeostasis And Visceral Adiposity In Old Mice, Alexandra Canizales, David J. Buckley, Sogol Zahedi, Daniel W. Trott
International Journal of Exercise Science: Conference Proceedings
Age is an independent risk factor for the development of type 2 diabetes, which is characterized in part by impaired glucose homeostasis, greater body weight and visceral adiposity. In older humans, exercise has been demonstrated to be a viable modality to improve these aforementioned outcomes. Surprisingly, to date, no one has assessed whether exercise improves glucose tolerance in old mice. Further the mechanism(s) of improvement in old animals independent of overt obesity is not well understood. PURPOSE: The purpose of this study was to determine whether 8 weeks of voluntary wheel running would result in improved glucose tolerance and …
Repeated Exposure To Adipose Tissue-Conditioned Media Induces Lipid Handling In Mast Cells Similar To Weight Cycling, Munira Kapadia, Alexa M. Betjemann, Matthew A. Cottam, Heather L. Caslin
Repeated Exposure To Adipose Tissue-Conditioned Media Induces Lipid Handling In Mast Cells Similar To Weight Cycling, Munira Kapadia, Alexa M. Betjemann, Matthew A. Cottam, Heather L. Caslin
International Journal of Exercise Science: Conference Proceedings
Excess adipose tissue is linked to an increased risk of cardiometabolic diseases, including type II diabetes, cardiovascular disease, and hypertension. Weight loss is often prescribed to lower disease risk; however, weight loss is difficult to maintain, leading many individuals to regain lost weight. Repeated cycles of weight gain, termed weight cycling, increases risk for metabolic diseases beyond that of stable long-term obesity. Our group recently showed that weight-cycled mice have more adipose tissue mast cells than obese mice. New analyses show that mast cells subcluster into two unique populations: one with high expression of classical mast cell genes and another …
Training Load Differences Between Position And Set In Ncaa D1 Collegiate Women’S Volleyball Match, Alexandra P. Brojanac, David Clark, Katie Munger, Yasuki Sekiguchi
Training Load Differences Between Position And Set In Ncaa D1 Collegiate Women’S Volleyball Match, Alexandra P. Brojanac, David Clark, Katie Munger, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
PURPOSE: This study investigated the training load differences between positions and sets in NCAA DI collegiate women’s volleyball matches. METHODS: Training load data from twenty NCAA D1 collegiate women’s volleyball players (mean±SD; age, 20±1y; height, 185.4±3.3cm; weight, 77.2±8.2kg) were monitored during all matches throughout the season where players donned an accelerometer-based player tracking device. Training loads included energy, %Hard-landing (when landing force was >15G), Jump 15+ (Jumps>15 inches), average jump height, and total number of jumps. Players’ positions were classified either in middle blocker (MB), outside hitter (OH), and setter, and sets consisted of Set1, Set2, Set3, Set4, and …
Comparison Of Two Independent Measures Of Anaerobic Capacity In Women And Men, Brady C. Mclain, Austin B. Shaw, Ethan J. Hein, Claudio A. Gobatto, Marcelo Papoti, Fúlvia De Barros Manchado-Gobatto, David W. Hill, Madison B. Landtiser, Jacob L. Mcnary, Sarah E. Deemer, Lydia K. Caldwell
Comparison Of Two Independent Measures Of Anaerobic Capacity In Women And Men, Brady C. Mclain, Austin B. Shaw, Ethan J. Hein, Claudio A. Gobatto, Marcelo Papoti, Fúlvia De Barros Manchado-Gobatto, David W. Hill, Madison B. Landtiser, Jacob L. Mcnary, Sarah E. Deemer, Lydia K. Caldwell
International Journal of Exercise Science: Conference Proceedings
Maximal accumulated oxygen deficit (MAOD) is the gold standard measure to evaluate anaerobic capacity. An alternative to MAOD is ‘MAOD_alt’, which is based on post-exercise measures. While MAOD requires multiple tests to evaluate anaerobic capacity, MAOD_alt requires a single exhaustive test. PURPOSE: The purpose of this study was to determine if MAOD_alt is a valid measure of anaerobic capacity in women and men during cycling[BM2] ergometer exercise. METHODS: Seven women (age 24 ± 3 y, height 166 ± 9 cm, weight 64 ± 13 kg) and nine men (22 ± 2 y, 185 ± 9 cm, 74 ± 10 …
Timbersports Relationship Between Upper Body Biomechanics And Accuracy, Parker W. Fourney, Amber M. Chelette, Jeremy P. Stovall
Timbersports Relationship Between Upper Body Biomechanics And Accuracy, Parker W. Fourney, Amber M. Chelette, Jeremy P. Stovall
International Journal of Exercise Science: Conference Proceedings
Timbersports are relatively new in comparison to most traditional sports. Given how new of a sport this is, there have been less than 5 recorded studies across every discipline. Most of the previous studies have presented data for the individual's trunk and lower body, but no study yet has examined the upper body kinematics to date. PURPOSE: Given this information, we decided to conduct a study exploring the relationship between upper body biomechanics and accuracy among a college timber sports team. METHODS: Subjects used a double-bit axe for throwing, most of the weight is in the head (1.35 …
The Slow Component Of The Vo2 Response Is Explained By The Increase In Glycolytic Contribution, Austin Shaw, Ethan J. Hein, Jacob L. Mcnary, Brady C. Mclain, David W. Hill, Madison B. Landtiser, Lydia K. Caldwell, Sarah E. Deemer
The Slow Component Of The Vo2 Response Is Explained By The Increase In Glycolytic Contribution, Austin Shaw, Ethan J. Hein, Jacob L. Mcnary, Brady C. Mclain, David W. Hill, Madison B. Landtiser, Lydia K. Caldwell, Sarah E. Deemer
International Journal of Exercise Science: Conference Proceedings
During severe intensity exercise, energy contribution from glycolysis leads to accumulation of intracellular H+ in the working muscles. This acidification results in decreased efficiency in the excitation-contraction coupling mechanism in the muscle cells, which decreases force production. Some studies have suggested that additional, progressive recruitment of glycolytic (type II) muscle fibers may be needed to maintain force production in constant power exercise which causes an increase in oxygen uptake over time (the VO2 slow component) after ~3 minutes. PURPOSE: The purpose of this study was to determine if the amplitude of the VO2 slow component is related …
Effects Of Vaping Nicotine And Thc On Respiratory Oxidative Stress And Pulmonary Function, Kayla Mckinley, Shannon Jordan, Nikhil Patel, Alan D. Moore
Effects Of Vaping Nicotine And Thc On Respiratory Oxidative Stress And Pulmonary Function, Kayla Mckinley, Shannon Jordan, Nikhil Patel, Alan D. Moore
International Journal of Exercise Science: Conference Proceedings
E-cigarettes cause thermal degradation of liquid bases producing an inhaled vapor (“vaping”). Evidence suggests compounds produced during vaping, as well as the vaporized substance itself, cause lung damage and oxidative stress. Oxidative stress can be quantified through analysis of F2-8-isoprostanes, reactive species that initiate lipid peroxidation of arachidonic acid. PURPOSE: To compare non-vaping controls (C) to vapers (V) to determine if respiratory oxidative stress and/or reduced lung function is associated with young healthy people who vape. METHODS: Individuals aged 18-30 were recruited. Participants who vape were asked to identify if they vape only nicotine, only THC, or both as well …