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Articles 91 - 120 of 262
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Bioimpedance Minimally Improves Prediction Of Bone Mineral Density Beyond Demographic Information Alone, Julia A. Whitson, Christian Rodriguez, Christine M. Florez, Ethan Tinoco, Joao P. Cardoso, Jaylynn Rasco, Sieneh Francis, Grant M. Tinsley
Bioimpedance Minimally Improves Prediction Of Bone Mineral Density Beyond Demographic Information Alone, Julia A. Whitson, Christian Rodriguez, Christine M. Florez, Ethan Tinoco, Joao P. Cardoso, Jaylynn Rasco, Sieneh Francis, Grant M. Tinsley
International Journal of Exercise Science: Conference Proceedings
Bone mineral content (BMC) serves as an important indicator of osteoporosis risk. Traditional methods of BMC estimation include using demographic information within prediction equations, which draw from population trends but may not reflect individual variance in BMC. Dual-energy X-ray absorptiometry (DXA) provides a more accurate assessment of BMC but may pose challenges in clinical settings due to certification requirements, cost, and space requirements. Bioelectrical impedance analysis (BIA) has shown promise in correlating with BMC and may offer an intriguing alternative due to its accessibility, but its efficacy compared to traditional methods remains largely unexplored. PURPOSE: Quantify the contribution of BIA …
No Impact Of Cardiovascular Disease Risk Classification On The Stress Response To Firefighting, Kelly Hines, Ryan Sowinski, Steven E. Martin, Lisa C. Colvin, Matthew J. Mcallister, Drew E. Gonzalez
No Impact Of Cardiovascular Disease Risk Classification On The Stress Response To Firefighting, Kelly Hines, Ryan Sowinski, Steven E. Martin, Lisa C. Colvin, Matthew J. Mcallister, Drew E. Gonzalez
International Journal of Exercise Science: Conference Proceedings
Firefighters (FF) experience elevations in stress biomarkers during live-fire suppression, which is posited to exacerbate cardiovascular disease (CVD) risk. It is unclear if the physiological stress response differs between low-risk (LOW) and moderate-risk (MOD) FF classified by the American College of Sports Medicine (ACSM) standards. PURPOSE: This study assessed the differences in stress response to a live fire-training evolution (LFTE) between LOW and MOD CVD risk classification groups. METHODS: Forty-four (n=44) FF completed an annual clinical health assessment, wherein they were risk-stratified in LOW or MOD classifications based on the ACSM criteria. Saliva samples were collected baseline (BL), …
Reliability And Relationships Between Knee Extension Strength Measurements And Sit-To-Stand Performance In Older Women, Alfonzo G. Salvador, Ty B. Palmer
Reliability And Relationships Between Knee Extension Strength Measurements And Sit-To-Stand Performance In Older Women, Alfonzo G. Salvador, Ty B. Palmer
International Journal of Exercise Science: Conference Proceedings
Knee extension strength measurements, such as peak torque and rate of torque development (RTD), are important characteristics relevant to muscle function. Research has shown that knee extension peak torque and RTD measurements are reliable parameters in young, college-aged adults. It is unclear if these measurements are reliable parameters in older adults. It is also unclear if these measurements are related to sit-to-stand performance. PURPOSE: The purpose of this study was to determine the reliability of knee extension peak torque and RTD measurements and their relationship with sit-to-stand performance in older women. METHODS: Twenty healthy older women (age = …
Sex Differences In Perceptual Adaptations During Heat Acclimation In Endurance Runners, Mario I. Hernandez, Marcos S. Keefe, Ryan A. Dunn, Ruben M. Moya, Kelly B. Elliott, Yasuki Sekiguchi
Sex Differences In Perceptual Adaptations During Heat Acclimation In Endurance Runners, Mario I. Hernandez, Marcos S. Keefe, Ryan A. Dunn, Ruben M. Moya, Kelly B. Elliott, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
Exercising in the heat negatively impacts performance. To combat this, heat acclimation (HA) is used to mitigate performance decrements through various physiological and perceptual adaptations. However, perceptual adaptations may differ during HA due to physiological differences between females and males. PURPOSE: To investigate perceptual adaptations between sexes during 7-day HA in endurance runners. METHODS: Seven female and four male endurance runners (age: 22 ± 5 years, body mass: 64.30 ± 7.97 kg, height: 168.00 ± 6.43 cm, maximal oxygen uptake [VO2max]: 58.30 ± 4.28 mL/kg/min; age: 21 ± 4 years, body mass: 78.63 ± 9.01 kg, …
Evaluating Rotc Cadets’ Knowledge Of General And Sports Nutrition, Sheyla Leon, Adriana Gil, Ryan Sowinski, Lisa C. Colvin, Steven E. Martin, Stella Volpe, Drew E. Gonzalez
Evaluating Rotc Cadets’ Knowledge Of General And Sports Nutrition, Sheyla Leon, Adriana Gil, Ryan Sowinski, Lisa C. Colvin, Steven E. Martin, Stella Volpe, Drew E. Gonzalez
International Journal of Exercise Science: Conference Proceedings
Reserve Officer Training Corps (ROTC) cadets regularly undergo highly stressful and physically demanding training, making adequate nutrition knowledge and eating habits essential for optimal health and physical performance. However, there is a paucity of data on ROTC cadets’ general and sports nutrition knowledge. PURPOSE: We evaluated ROTC cadets' general and sports nutrition knowledge. METHODS: Cross-sectional data were obtained from 206 ROTC cadets regarding sports performance and nutrition supplementation knowledge via the validated paper-based questionnaire, Nutrition Knowledge Questionnaire for Athletes (NKQA). The questionnaire data were analyzed using SPSS version 29 software. Shapiro-Wilk Test was used to assess normality. The correct responses …
Sex-Specific Responses Of Heat Acclimation On Running Performance In Cool Environmental Conditions, Marcos S. Keefe, Ryan A. Dunn, Kelly B. Elliott, Ruben E. Moya, Yasuki Sekiguchi
Sex-Specific Responses Of Heat Acclimation On Running Performance In Cool Environmental Conditions, Marcos S. Keefe, Ryan A. Dunn, Kelly B. Elliott, Ruben E. Moya, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
Training and competing in the heat negatively impact athlete performance and health. Heat acclimation (HA) involves repeated heat exposures that many endurance athletes use to optimize performance and safety when competing in the heat. Although HA has been shown to improve endurance performance in the heat, contention remains whether it may confer these adaptations to a cool environment. PURPOSE: To Investigate physiological and performance adaptations in a cool environment following HA in endurance athletes. METHODS: Eleven high-level endurance runners (4 males [age: 21 ± 4 years; body mass: 78.63 ± 9.01 kg; height: 182.55 ± 3.97 cm; maximal …
Effect Of Improved Sleep Regularity On Subendocardial Viability Ratio In Young To Middle-Aged Adults, Gabriel Narvaez, Joaquin Gonzales
Effect Of Improved Sleep Regularity On Subendocardial Viability Ratio In Young To Middle-Aged Adults, Gabriel Narvaez, Joaquin Gonzales
International Journal of Exercise Science: Conference Proceedings
Fluctuation of the sleep/wake schedule, commonly referred to as sleep irregularity, is associated with increased risk of cardiovascular disease (CVD). Subendocardial viability ratio (SEVR) is a measure of myocardial perfusion relative to left-ventricular oxygen demand and holds clinical value as a predictor of adverse CVD events. However, little is known on how sleep irregularity could affect SEVR. PURPOSE: To test the hypothesis that a reduction in sleep irregularity would improve SEVR. METHODS: Fourteen adults (9F, 5M, age 35.43 ± 10y, BMI 25.46 ± 3.60 kg/m2) participated in a randomized crossover study that included 12 nights of …
Associations Between Serum And Skeletal Muscle Androgens And Androgen Receptor-Associated Biomarkers, Lean Body Mass, And Muscular Strength, Derek Flores, Thomas D. Cardaci, Dillon Harris, Steven B. Machek, Darryn Willoughby
Associations Between Serum And Skeletal Muscle Androgens And Androgen Receptor-Associated Biomarkers, Lean Body Mass, And Muscular Strength, Derek Flores, Thomas D. Cardaci, Dillon Harris, Steven B. Machek, Darryn Willoughby
International Journal of Exercise Science: Conference Proceedings
The relationships between lean body mass (LBM), muscular strength, androgens, and several androgen receptor (AR)-associated biomarkers are sparsely described. PURPOSE: To examine any potential correlations linking these aforementioned factors. METHODS: 10 resistance-trained males were recruited for this crossover study, each assessing their leg and bench press one-repetition maximums (1RM) and body composition before completing two volume- and intensity-equated resistance training sessions separated by 7-10 days. Serum and skeletal muscle tissue samples were acquired in each session at baseline, 3-hours, and 24-hours post-exercise to assess circulating and muscle androgens (testosterone [TST] and dihydrotestosterone [DHT]), AR protein content and gene …
Evaluating Rotc Cadets Nutritional Competency, Dietary Habits, And Overall Health, James L. Lilly, Sarah E. Johnson, Adriana Gil, Broderick Dickerson, Ryan J. Sowinski, Steven E. Martin, Drew E. Gonzalez
Evaluating Rotc Cadets Nutritional Competency, Dietary Habits, And Overall Health, James L. Lilly, Sarah E. Johnson, Adriana Gil, Broderick Dickerson, Ryan J. Sowinski, Steven E. Martin, Drew E. Gonzalez
International Journal of Exercise Science: Conference Proceedings
Reserve Officer Training Corps (ROTC) cadets regularly have highly stressful and physically demanding training, making adequate nutritional knowledge and eating habits essential for optimal health and physical performance. However, there is limited work looking at the ROTC cadet’s nutritional knowledge, dietary patterns, and perceived health. PURPOSE: This study aimed to investigate ROTC cadets' nutrition knowledge and perceived health. METHODS: Cross-sectional data were obtained from 174 ROTC cadets regarding nutritional knowledge and self-reported health via validated paper-based questionnaires, including the Perceived Barriers to Healthy Eating and a General Sports Nutrition Questionnaire. The questionnaire data were analyzed using SPSS version …
Heart Rate Reserve Is Associated With Quality Of Life, Willing Demott, John Manning, Jennifer M. Yentes
Heart Rate Reserve Is Associated With Quality Of Life, Willing Demott, John Manning, Jennifer M. Yentes
International Journal of Exercise Science: Conference Proceedings
A resilient person is less susceptible to injury and loss of function following a perturbation because they are capable of recovering quickly from physical and cognitive difficulties. One way to estimate resilience is through the measurement of reserve, which is defined as the difference between resting or baseline capacity and maximal capacity. An individual’s reserve capacity may depend on several factors such as quality of life. PURPOSE: Determine the relationship between heart rate reserve and components of quality of life. METHODS: Eleven middle-aged (59.3 ± 4.3 yrs) and seven older adults (70.0 ± 3.7 yrs) completed a Bruce protocol exercise …
The Influence Of Age On Hip Extension Strength Characteristics And Vertical Jump Power, Tyler R. Cole, Kayla P. Sisneros, Evan B. Johnson, Lilly M. Frans, Ty B. Palmer
The Influence Of Age On Hip Extension Strength Characteristics And Vertical Jump Power, Tyler R. Cole, Kayla P. Sisneros, Evan B. Johnson, Lilly M. Frans, Ty B. Palmer
International Journal of Exercise Science: Conference Proceedings
Hip extension strength characteristics, such as peak torque and rate of torque development (RTD), are important measurements relevant to functional performance. Declines in functional performance are commonly reported as a consequence of aging. However, few studies have investigated the influence of age on hip extension peak torque and RTD. PURPOSE: This study aimed to compare hip extension peak torque and RTD characteristics between young and older women. A secondary aim was to determine the correlations between these characteristics and vertical jump (VJ) power. METHODS: Ten young (age = 22 ± 3 years) and ten older (68 ± 10 …
The Acute Effects Of Carrying A Heavy Grocery Bag On Handgrip Rapid Strength In Young And Older Women, Lilly M. Frans, Kayla P. Sisneros, Evan Johnson, Tyler R. Cole, Ty B. Palmer
The Acute Effects Of Carrying A Heavy Grocery Bag On Handgrip Rapid Strength In Young And Older Women, Lilly M. Frans, Kayla P. Sisneros, Evan Johnson, Tyler R. Cole, Ty B. Palmer
International Journal of Exercise Science: Conference Proceedings
Declines in handgrip rapid strength characteristics, which include rate of force development (RFD), are commonly reported as a consequence of aging. These declines have been shown to have a detrimental effect on the functional performance abilities of older adults. Such an effect may be amplified by a further decrease in handgrip RFD as a result of fatigue. Evidence suggests that carrying a heavy grocery bag can elicit fatigue-induced changes in muscle activity and cardiovascular parameters. It is unclear if carrying a heavy grocery bag will elicit fatigue-induced changes in handgrip RFD. PURPOSE: The purpose of this study was to …
Relationship Between Body Composition, Body Fat Distribution, And Blood Lipids Among Law Enforcement Officers: Part 1, Jacob Broeckel, Megan Leonard, Anisha Patel, Broderick L. Dickerson, Ryan J. Sowinski, Matthew J. Mcallister, Drew E. Gonzalez, Steven E. Martin
Relationship Between Body Composition, Body Fat Distribution, And Blood Lipids Among Law Enforcement Officers: Part 1, Jacob Broeckel, Megan Leonard, Anisha Patel, Broderick L. Dickerson, Ryan J. Sowinski, Matthew J. Mcallister, Drew E. Gonzalez, Steven E. Martin
International Journal of Exercise Science: Conference Proceedings
Law enforcement officers (LEOs) have a high-stress occupation which is prone to cardiovascular disease (CVD). In fact, data suggest that LEOs have a 1.7-fold higher CVD prevalence versus the general public, in addition to 40.5% of LEOs being classified as obese. However, research is lacking regarding the relationship between body composition, body fat distribution, and blood lipid panels as it pertains to CVD risk in LEOs. PURPOSE: To determine if body composition and fat distribution measures correlate with predictive lipid markers in LEOs. METHODS: Forty-three LEOs (age = 41.7±9.6 yrs; weight = 91.9±15.4 kg; height = 179.8±8.7 cm; …
Self-Reported Dietary Habits And Barriers Among Rotc Cadets, Sarah E. Johnson, Adriana Gil, Broderick Dickerson, James L. Lilly, Ryan J. Sowinski, Steven E. Martin, Drew E. Gonzalez
Self-Reported Dietary Habits And Barriers Among Rotc Cadets, Sarah E. Johnson, Adriana Gil, Broderick Dickerson, James L. Lilly, Ryan J. Sowinski, Steven E. Martin, Drew E. Gonzalez
International Journal of Exercise Science: Conference Proceedings
Reserve Officer Training Corps (ROTC) cadets' highly demanding lifestyle may negatively impact health and performance. Reports also suggest they are at risk for poor nutrition, i.e., low energy availability or not meeting Military Dietary Reference Intakes. Still, there are limited data on the barriers to proper nutrition and eating habits among ROTC cadets. PURPOSE: This study aimed to investigate the dietary habits of ROTC cadets and the factors or barriers influencing them. METHODS: Cross-sectional data were obtained from 173 ROTC cadets about nutritional habits, factors, and barriers via validated paper-based questionnaires including; the Perceived Barriers to Healthy Eating, …
Changes In Cardiovascular Disease Risk Factors Over 2 Years Among Law Enforcement Officers, Lauryn Hawkins, David Torres Jr., Broderick Dickerson, Ryan J. Sowinski, Drew E. Gonzalez, Steven E. Martin
Changes In Cardiovascular Disease Risk Factors Over 2 Years Among Law Enforcement Officers, Lauryn Hawkins, David Torres Jr., Broderick Dickerson, Ryan J. Sowinski, Drew E. Gonzalez, Steven E. Martin
International Journal of Exercise Science: Conference Proceedings
Law enforcement officers (LEOs) have heightened cardiovascular disease (CVD) risk due to the nature of their occupations. Data suggests CVD is 1.7 times more prevalent when compared to the general public. Considering the numerous stressors that LEOs face, which exacerbate their CVD risk, it is important to consider annual monitoring of the risk factors (i.e., obesity, hyperlipidemia, hypertension, etc.). PURPOSE: To examine cardiovascular health parameters in male and female LEOs over two years. METHODS: Twenty-one LEOs (entry demographics: age = 43.5±10.0 yrs; weight = 92.9±15.4 kg; height = 176.8±9.1 cm), from a local police department, were studied from annual clinical …
Relationship Between Body Composition, Body Fat Distribution, And Blood Lipids Among Law Enforcement Officers: Part 2, Megan Leonard, Adriana Gil, Broderick Dickerson, Ryan Sowinski, Matthew J. Mcallister, Drew E. Gonzalez, Steven E. Martin
Relationship Between Body Composition, Body Fat Distribution, And Blood Lipids Among Law Enforcement Officers: Part 2, Megan Leonard, Adriana Gil, Broderick Dickerson, Ryan Sowinski, Matthew J. Mcallister, Drew E. Gonzalez, Steven E. Martin
International Journal of Exercise Science: Conference Proceedings
Law enforcement officers (LEOs) have a high-stress occupation, which is prone to cardiovascular disease (CVD). Data suggest a 1.7-fold higher CVD prevalence versus the general public, in addition to 40.5% of LEOs being classified as obese. Emerging evidence suggests that lipid-related atherosclerotic risk may be better captured by including advanced blood lipid panels (i.e., cholesterol particle type and size). However, there needs to be more research regarding the relationship between body composition, body fat distribution, and advanced blood lipid panels concerning CVD risk in LEOs. PURPOSE: To determine if body composition and fat distribution measures correlate with predictive advanced …
Self-Reported Dietary Habits And Barriers Among First Responders, Adriana Gil, Ryan J. Sowinski, Kristen Mackenzie-Shalders, Steven E. Martin, Robin (Rob) Marc Orr, Drew E. Gonzalez
Self-Reported Dietary Habits And Barriers Among First Responders, Adriana Gil, Ryan J. Sowinski, Kristen Mackenzie-Shalders, Steven E. Martin, Robin (Rob) Marc Orr, Drew E. Gonzalez
International Journal of Exercise Science: Conference Proceedings
Firefighters (FFs) and law enforcement officers (LEOs) have a high, lifestyle-related, risk for health conditions such as cardiovascular disease (CVD). Nutritional intervention has been identified as a critical area to improve these risk factors. However, there are limited data regarding the dietary habits and barriers of FFs and LEOs. PURPOSE: This study aimed to investigate the dietary habits of first responders and the factors or barriers influencing them. METHODS: Cross-sectional data were obtained from 21 first responders regarding nutritional habits, factors, and barriers via validated paper-based questionnaires which include; the Perceived Barriers to Healthy Eating, Food Choice Questionnaire, …
Traditional Football Training Groups Assessed By Sprint Performance, Kelly Hines, Drew E. Gonzalez, Steven E. Martin, J Bryan Mann
Traditional Football Training Groups Assessed By Sprint Performance, Kelly Hines, Drew E. Gonzalez, Steven E. Martin, J Bryan Mann
International Journal of Exercise Science: Conference Proceedings
Linear speed has historically and continues to be used to predict success in both collegiate and professional football. During a training session to improve on linear speed, players are split into traditional position groups of bigs, big skills, and skills. PURPOSE: Determine if traditional position groups are effective groupings based on 40-yard dash times. METHODS: Subjects (n=495) were members of an institution’s American football team. The subjects completed two trials of a 40-yard sprint assessment starting from a three-point stance with a recovery period of five minutes in between. RESULTS: There were statistical differences between the traditional …
Driving Entrainment Of Locomotor And Respiratory Systems To Determine Metabolic Efficiency, Michael T. Young, Jennifer M. Yentes, Kuanting Chen
Driving Entrainment Of Locomotor And Respiratory Systems To Determine Metabolic Efficiency, Michael T. Young, Jennifer M. Yentes, Kuanting Chen
International Journal of Exercise Science: Conference Proceedings
Many biological rhythms, including breathing and locomotor rhythms, are interconnected through a phenomenon known as coupling. Locomotor respiratory coupling (LRC) is quantified using a ratio of stride cycles to breaths. For example, an entrained LRC ratio of two strides to one breathing cycle, is a typical ratio humans use while walking. While various ratios have been recorded, previous research has suggested that not deviating from a particular ratio is associated with low energy expenditure. However, recent research challenges the assumption that stronger LRC correlates with lower energy expenditure, but rather, LRC variability is associated with lower energy expenditure. In addition, …
Effects Of Endurance Training On Skeletal Muscle Mass And Inflammation In A Rat Model Of Heart Failure, Aaron Garcia, Dillon Harris, Quinten Pigg, Daniela Sayuri Inoue, Mariana Janini Gomes
Effects Of Endurance Training On Skeletal Muscle Mass And Inflammation In A Rat Model Of Heart Failure, Aaron Garcia, Dillon Harris, Quinten Pigg, Daniela Sayuri Inoue, Mariana Janini Gomes
International Journal of Exercise Science: Conference Proceedings
Chronic disease states including heart failure (HF) often lead to reduced physical activity, resulting in disuse and low-level systemic inflammation, which contribute to the decline in muscle mass and function. An important goal of therapy in HF patients is to counteract or prevent the development of skeletal muscle alterations in order to restore a normal functional capacity. Exercise is an established means of improving exercise capacity and quality of life in patients with HF. Therefore, we aimed to evaluate the impact of an endurance program on skeletal muscle mass and inflammation in a rat model of pulmonary arterial hypertension (PAH)-induced …
The Effect Of Capsaicin On Peak Force And Rate Of Force Developement In Resistance-Trained Men - A Pilot Study, Jalyn Dunlap, Nigel Jiwan, Casey Appell, Andrew Schindel, Jon Berrios, Savannah Adjetey, Mia Uriegas, Hui-Ying Luk
The Effect Of Capsaicin On Peak Force And Rate Of Force Developement In Resistance-Trained Men - A Pilot Study, Jalyn Dunlap, Nigel Jiwan, Casey Appell, Andrew Schindel, Jon Berrios, Savannah Adjetey, Mia Uriegas, Hui-Ying Luk
International Journal of Exercise Science: Conference Proceedings
Capsaicin (CAP) is a robust stimulator of transient receptor potential vanilloid 1 (TRPV1), which promotes calcium (Ca2+) efflux from the sarcoplasmic reticulum and can potentiate cross-bridge formation that has the potential to affect peak force and rate of force development (RFD). However, its effect on overall lower body strength is limited. PURPOSE: To determine the effect of acute CAP consumption on peak force and RFD in resistance-trained men. METHODS: Resistance-trained men (n=5; age: 22±2years, mass: 80.9±11.9kg; height: 177.3±6.6cm) were supplemented either with 2.4mg of CAP or placebo (PL; microcrystalline cellulose). Prior to (PRE) and 45 minutes …
Dehydration And Heavy Resistance Exercise Effect On Intracellular And Intramuscular Fluid Shifts, Mia A. Uriegas, Nigel Jiwan, Casey Appell, Andrew Schindel, Ryanoneil Ellis, Jalyn Dunlap, Christopher Washington, Isabell R. Trevino, Carson W. Lewis, Jan-Joseph S. Rolloque, Ruben Moya, Marcos Keefe, Ryan Dunn, Yasuki Sekiguchi, Hui-Ying Luk
Dehydration And Heavy Resistance Exercise Effect On Intracellular And Intramuscular Fluid Shifts, Mia A. Uriegas, Nigel Jiwan, Casey Appell, Andrew Schindel, Ryanoneil Ellis, Jalyn Dunlap, Christopher Washington, Isabell R. Trevino, Carson W. Lewis, Jan-Joseph S. Rolloque, Ruben Moya, Marcos Keefe, Ryan Dunn, Yasuki Sekiguchi, Hui-Ying Luk
International Journal of Exercise Science: Conference Proceedings
Dehydration may alter the ratio between the extracellular water (ECW) and intracellular water (ICW). Nevertheless, it is unknown whether the ratio between ECW and ICW following resistance exercise (RE) is affected by dehydration. PURPOSE: To determine the effect of dehydration on fluids shift after heavy RE. METHODS: 13 resistance-trained men (age: 21±2years; height: 176.4±6.0cm; weight: 79.5±11.5kg) completed a heavy RE consisting of bilateral leg press and knee extension exercises (5 x 10 at 80% of 1 repetition maximum with 2-mins rest between sets & exercises) either under a hydrated (HS; urine specific gravity [USG] < 1.020) or a dehydrated state (DS; USG ≥ 1.020; 24-hour fluid restriction). The two conditions were separated by two weeks. The ratio of ICW/ECW and total body water (TBW) were measured before (PRE), 1 hour (1H), and 3H after RE using bioelectrical impedance spectroscope (BIS). Additionally, vastus lateralis muscle samples were collected at PRE, 1H, and 3H via muscle biopsy. Muscle samples were weighed (Wt) before (Wet) and after (Dry) heating at 80°C for 55 minutes. For BIS parameters, values were normalized to each participant's HS PRE value. For muscle Wt, percent changes from Dry to Wet were calculated. Repeated measures ANOVAs were used to identify the differences. RESULTS: A significant …
The Effects Of Weekly And Game-Day Weather Conditions On Soccer Game-Day Performance, Ciriany Arrazola, Jan-Joseph S. Rolloque, Kelly B. Elliott, Ruben Moya, Marcos Keefe, Yasuki Sekiguchi
The Effects Of Weekly And Game-Day Weather Conditions On Soccer Game-Day Performance, Ciriany Arrazola, Jan-Joseph S. Rolloque, Kelly B. Elliott, Ruben Moya, Marcos Keefe, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
Game-day performance may be influenced by factors such as training load management, hydration status, and environmental conditions at all levels of competition in soccer. However, there is currently a lack of literature examining the effects of weather conditions, prior to and during game-days, on game-day performance in soccer players. PURPOSE: To observe the effects of the 7-day average of weather conditions prior to game-day and average game-day weather conditions on game-day performance, more specifically heart rate (HR) and running velocity. METHODS: Twenty-one male semi-professional soccer players (mean ± SD; age: 22 ± 2 yr; mass: 77.3 ± 6.9 …
Systemic Inflammation Persists In Rats With Heart Failure After A Short-Term Endurance Training Protocol, Quinten Pigg, Dillon Harris, Aaron Garcia, Daniela Sayuri Inoue, Mariana Janini Gomes
Systemic Inflammation Persists In Rats With Heart Failure After A Short-Term Endurance Training Protocol, Quinten Pigg, Dillon Harris, Aaron Garcia, Daniela Sayuri Inoue, Mariana Janini Gomes
International Journal of Exercise Science: Conference Proceedings
Exercise has been shown to produce an anti-inflammatory response and an increased exercise tolerance in heart failure (HF) patients. In rats, monocrotaline (MCT) leads to pulmonary arterial hypertension-induced HF (PAH-HF), resulting in exercise intolerance and chronic inflammation. However, little is known about the effects of endurance training in rats with PAH-HF induced by monocrotaline. PURPOSE: To investigate the effects of an endurance training protocol on systemic inflammatory markers and exercise tolerance in rats with HF. METHODS: 30 male Wistar rats (~250g) were randomly divided into 4 groups: control untrained (CU); control trained (CT), PAH-HF untrained (HFU), and PAH-HF trained (HFT). …
Micronized Biocompatible Ceramic Promotes Muscle Derived Il-6 Release In Disuse, Jacob Kendra, Shadi Golpasandi, Alexandra Naman, Mariam Othman, Joo Kim, Rachel Rauth, Khaled Moustafa, John Lawler, Aaron Morton
Micronized Biocompatible Ceramic Promotes Muscle Derived Il-6 Release In Disuse, Jacob Kendra, Shadi Golpasandi, Alexandra Naman, Mariam Othman, Joo Kim, Rachel Rauth, Khaled Moustafa, John Lawler, Aaron Morton
International Journal of Exercise Science: Conference Proceedings
Skeletal muscle is remarkably plastic and undergoes significant muscle wasting in response to mechanical unloading. Chronic bedrest and microgravity conditions promote disuse-induced muscle atrophy and dysfunctional myogenesis. While these pathological effects have been well documented, there are currently no effective therapies to remedy this muscle loss. Time-release ion matrices (TRIM) are amorphous non-crystalline biomaterials that promote regenerative gene transcription when injected in soft tissue. However, the detailed pathways involved in TRIM activated regeneration of skeletal muscle are unexplored. Degenerative and regenerative inflammation are key processes in regeneration. PURPOSE: The purpose of this study was to investigate muscle inflammation in response …
Maximal Isometric Contraction In Skeletal Muscle Of Endurance Trained Rats With Heart Failure, Dillon Harris, Jacob Kendra, Quinten Pigg, Shadi Golpasandi, Aaron Garcia, Daniela Inoue Yoshimura, Aaron Morton, Mariana Janini Gomes
Maximal Isometric Contraction In Skeletal Muscle Of Endurance Trained Rats With Heart Failure, Dillon Harris, Jacob Kendra, Quinten Pigg, Shadi Golpasandi, Aaron Garcia, Daniela Inoue Yoshimura, Aaron Morton, Mariana Janini Gomes
International Journal of Exercise Science: Conference Proceedings
Heart failure (HF) leads to debilitating skeletal muscle dysfunction and atrophy, with exercise tolerance (ET) remaining a crucial indicator of clinical, practical, and mortality-based outcomes. To simulate these comorbidities, monocrotaline (MCT) is a pharmacological agent typically used to aid in replicating experimental models of right ventricle HF. PURPOSE: To investigate the viability of moderate-intensity aerobic training to preserve skeletal muscle function and ameliorate muscle atrophy in MCT-induced HF. METHODS: Thirty 8-week-old male Wistar rats were randomly divided into sedentary (SED) or trained groups (EX; 30min/day treadmill running sessions, 5 days/wk, for 4 weeks) at 60% intensity determined by a maximal …
Quantification Of Mitochondrial Morphology In Whole Muscle, Shadi Golpasandi, Jacob Kendra, Alexandra Naman, Aaron Morton
Quantification Of Mitochondrial Morphology In Whole Muscle, Shadi Golpasandi, Jacob Kendra, Alexandra Naman, Aaron Morton
International Journal of Exercise Science: Conference Proceedings
Mitochondrial dysfunction is well described in many chronic illnesses including musculoskeletal, neurodegenerative, and cardiovascular diseases. In this regard, mitochondrial network morphology has been implicated as a biomarker of disease correlating increased mitochondrial fragmentation to impaired cellular function. While advancements in imaging techniques have furthered our understanding of mitochondrial dynamics in live cells, easily accessible approaches for accurate quantification of in situ, whole muscle mitochondria are lacking. PURPOSE: The purpose of this study was to validate a proof-of-concept method capable of quantifying 3D mitochondrial network morphology in whole mount skeletal muscle and then applying it to mitochondrial morphology analysis in multiple …
The Effects Of Summer Training On Neuromuscular Performance In Semi-Professional Soccer Players, Jan-Joseph S. Rolloque, Kathryn E. Southall, Ruben Moya, Travis Anderson, Kelly B. Elliott, Kealey J. Wohlgemuth, Mckenzie M. Hare, William M. Adams, Jacob A. Mota, Yasuki Sekiguchi
The Effects Of Summer Training On Neuromuscular Performance In Semi-Professional Soccer Players, Jan-Joseph S. Rolloque, Kathryn E. Southall, Ruben Moya, Travis Anderson, Kelly B. Elliott, Kealey J. Wohlgemuth, Mckenzie M. Hare, William M. Adams, Jacob A. Mota, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
While training load (TL) and heat exposure have been shown to independently influence neuromuscular performance, these combined effects have not been fully explored. PURPOSE: To investigate the effects of summer soccer training on neuromuscular performance in semi-professional male soccer players. METHODS: 21 semi-professional male soccer players (age: 21.4 ± 1.9 years; mass: 77.3 ± 7.0 kg; height: 179.2 ± 6.4 cm) visited the laboratory on two occasions separated by three weeks of training. During each visit, ultrasound imaging was collected to determine muscle cross-sectional area (CSA) of the dominant rectus femoris (RF) and vastus lateralis (VL). Maximal voluntary …
Release Of Microrna15a/16 From Skeletal Muscle During Exercise Regulates Proteostasis In Muscle And Cancer, Patrick Ryan, Selina Uranga, James D. Fluckey
Release Of Microrna15a/16 From Skeletal Muscle During Exercise Regulates Proteostasis In Muscle And Cancer, Patrick Ryan, Selina Uranga, James D. Fluckey
International Journal of Exercise Science: Conference Proceedings
Proteostasis, the intricate process of maintaining the proteome, is a critical matter for cellular health. The regulation of the multiple intersecting metabolic pathways comprising the proteostatic network is correspondingly complex and incompletely understood; however, a new and intriguing candidate in understanding this process has emerged in the form of microRNA (miRNA), small RNA species which are capable of regulating hundreds of genes at once by binding to and degrading mRNA transcripts. We have previously shown that muscle contraction results in the release of two miRNA species (miR15a/16) from skeletal muscles, and that a perfusate rich in these miRNAs slows growth …
Assessing Dual Task Gait Asymmetries In Older Adults Using Wireless Instrumented Shoe Insoles, Madison M. Treece, Jennifer M. Yentes, Sofie De Wandel, Minchae C. Kang, Marielle P.K.J. Engelen, Nicolaas E. Deutz, Andrew D. Nordin
Assessing Dual Task Gait Asymmetries In Older Adults Using Wireless Instrumented Shoe Insoles, Madison M. Treece, Jennifer M. Yentes, Sofie De Wandel, Minchae C. Kang, Marielle P.K.J. Engelen, Nicolaas E. Deutz, Andrew D. Nordin
International Journal of Exercise Science: Conference Proceedings
Gait asymmetries have been suggested to be indicators of pathology. Walking while simultaneously completing a secondary cognitive task, or dual task, has been found to alter gait parameters such as stride time and stride length in aging populations. Gait asymmetries are commonly exacerbated in older adults under dual task conditions as attention is diverted away from walking. Although clinically relevant, assessing gait biomechanics outside of traditional laboratory settings can be challenging, but is possible using lightweight wireless sensors. PURPOSE: Our aim was to assess the influence of a cognitive load on gait asymmetries in older adults using wireless instrumented …