Measures Of Center Of Pressure And Lower Leg Muscle Electromyography During Landing Before And After Plantar Flexor Stretch,
2024
Midwestern State University
Measures Of Center Of Pressure And Lower Leg Muscle Electromyography During Landing Before And After Plantar Flexor Stretch, Connor Hill, Brittany Coltrain, Michael Olson
International Journal of Exercise Science: Conference Proceedings
Static stretching of the plantar flexor muscles is reported to modify neuromuscular responses to external stimuli. However, it is not known how these muscles respond to external loading in an applied task, such as single-leg drops. Further, if mechanical laxity in the plantar flexor muscles is present after stretching of it is unclear how this laxity will influence the muscle activation and movement patterns of the lower extremities. PURPOSE: This study is intended to further explore the response of the lower extremities to plantar flexor muscle stretch in an effort to understand its impact on potential injury. METHODS: …
Modified Torque Output And Lower Leg Muscle Electromyography After Passive Stretching,
2024
Midwestern State University
Modified Torque Output And Lower Leg Muscle Electromyography After Passive Stretching, Brittany Coltrain, Connor Hill, Michael W. Olson
International Journal of Exercise Science: Conference Proceedings
Increased stretch of the plantar flexor muscles is reported to increase tissue laxity of the tendons and reduces force output, but in other studies the tendon biomechanical properties are not affected and force output is not changed after stretch. PURPOSE: To examine the force output and muscle electromyography activity of lower leg muscles to a prolonged passive stretch. METHODS: Five participants (20.6 ± 1.1 yrs: 1.78 ± 0.1 m:, 80.6 ± 9.9 kg) performed maximal plantar and dorsi flexion isometrically while secured to an isokinetic dynamometer. They were seated upright with ~90 deg hip flexion. The knee was …
Biomechanical Assessment Of Footwear And Foot Landing Types In Collegiate Female Runners At Preferred Running Speed,
2024
Midwestern State University
Biomechanical Assessment Of Footwear And Foot Landing Types In Collegiate Female Runners At Preferred Running Speed, Shivaniba Gohil, Michael W. Olson
International Journal of Exercise Science: Conference Proceedings
Barefoot and shod running with conditions at heel landing and forefoot landing has implications on running biomechanics. PURPOSE: To investigate the impact of two footwear and two foot landing type conditions on lower limb and lumbar acceleration and kinematics. METHODS: Six collegiate female runners (20.6 ± 1.5 yrs, 58.6 ± 4.7 kg, 1.63 ± 0.05 m) performed running trials on a motorized treadmill. Their averaging running volume was 49.6 ± 31.5 km/wk (range: 16.1 – 80.5 km/wk). Inertial measuring units (IMUs) (370 Hz), containing triaxial accelerometers (1g = 9.81 m/s/s) and gyroscopes (deg/s), were secured on the foot/shoe …
Effect Of Running Surface On 40-Yard Dash Times In High School Football Players,
2024
Texas A&M University-San Antonio
Effect Of Running Surface On 40-Yard Dash Times In High School Football Players, Francis B. Sanchez, John D. Smith
International Journal of Exercise Science: Conference Proceedings
PURPOSE: To allow further examination in how different running surfaces affect sprinting times of 40-yard dashes for high school football players. This can add to the literature due to there being a limited amount of research available for this age group compared to their collegiate and professional counterparts. METHODS: Fifteen participants (ages 17-18 years, 68.9±3.0 inches, 176.4±56.1 lbs) were randomly ordered for grass, turf, and track trials. 40 yards were measured using the Measure app (iPhone) on each surface. The Jawku timing system was stationed at the finish, participants were positioned in a staggered 2-pt stance, and started …
Impact Of Menstrual Cycle On Submaximal Exercise Vo2 And Critical Power In Active Eumenorrheic Females,
2024
Texas Woman's University
Impact Of Menstrual Cycle On Submaximal Exercise Vo2 And Critical Power In Active Eumenorrheic Females, Emma W. Ware, Adelle Kanaan, Erika R. Zoellner, Catherine Mbango, Deltra Muoki, Wayne Brewer, Mindy Patterson, Derek Miketinas, Siddhartha Angadi Facsm, Brandon J. Sawyer, Glenn A. Gaesser Facsm, Wesley J. Tucker
International Journal of Exercise Science: Conference Proceedings
The effects of the menstrual cycle (MC) on exercise metabolism and performance are equivocal. PURPOSE: To investigate whether the MC impacted submaximal exercise oxygen consumption (VO2) and Critical Power (CP) in recreationally active, eumenorrheic females. METHODS: Eight eumenorrheic females (Age: 33±8 y, VO2max: 36.9±3.8 ml/kg/min) completed fasted exercise testing in 3 distinct phases of the MC (early follicular, late follicular, and mid luteal). MC phase was determined using calendar-based counting, ovulation test strips, and confirmed via serum hormones (estrogen and progesterone). For submaximal exercise, participants cycled for 20 min at 50% VO2max while VO2 …
Effect Of Unweighting Using The Lightspeed Lift On Energy Expenditure During Treadmill Walking And Jogging,
2024
Texas A&M University-San Antonio
Effect Of Unweighting Using The Lightspeed Lift On Energy Expenditure During Treadmill Walking And Jogging, Faith R. Ramirez, Danyel Valdez, Araceli Martinez, John D. Smith
International Journal of Exercise Science: Conference Proceedings
Support and unweighting systems, such as AlterG, are often used in rehabilitation and alternative training, which provide an exercise effect that can minimize fitness- or performance-related loss. PURPOSE: The purpose of this study is to explore the effect of using a treadmill bungee support system (Lightspeed lift) on oxygen consumption (energy expenditure), heart rate, and rating of perceived exertion. METHODS: Twenty-four participants (age (yrs)=22.1±2.9, ht (cm)=169.8±10.1, wt (kg)=76.6±13) completed two trials of walking (3mph) and two trials of jogging (5 mph) with and without support. Data was analyzed with IBM SPSS v27 (Chicago IL). Repeated Measures ANOVA were …
Bilateral Acromioclavicular Sprains,
2024
Abilene Christian University
Bilateral Acromioclavicular Sprains, Elizabeth Moreno, Melissa D. Long
International Journal of Exercise Science: Conference Proceedings
CASE HISTORY: The patient is a 20-year-old linebacker who sustained two AC sprains in the span of nine days. The patient sustained his right AC sprain by tackling with a lowered shoulder. After he was cleared to play from his first injury, he sustained his second AC sprain nine days after. Interestingly, the second shoulder injury occurred by tackling the same opponent with a lowered shoulder. PHYSICAL EXAM: The athletic training staff assessed the right shoulder immediately after injury and tested his shoulder strength. After examination the athletic training staff came to the conclusion that it was an AC sprain, …
Acute Effects Of Different Volumes Of High-Intensity Interval Training And Continuous Aerobic Exercise In Vascular Reactivity,
2024
University of Texas at El Paso
Acute Effects Of Different Volumes Of High-Intensity Interval Training And Continuous Aerobic Exercise In Vascular Reactivity, Josue Reyes, Manuel Gomez, Bailey Ramirez, Jorge De Castro, Esther Afangideh, Daniel Conde, Alvaro N. Gurovich
International Journal of Exercise Science: Conference Proceedings
Endothelial dysfunction is characterized by the unbalance between vasodilatory and vasoconstrictor mechanisms. Furthermore, this is recognized as the initial step to developing cardiovascular disease. Exercise plays an important role in both cardiac rehabilitation and cardiovascular risk prevention. However, some new exercise modalities, such as high-intensity interval training (HIIT), are becoming more popular, and limited information about their effect on the endothelium is available. PURPOSE: to determine what volume of HIIT will improve endothelial function than continuous moderate exercise intensity. METHODS: Six young apparently healthy subjects were recruited for seven laboratory visits. The first visit included a graded exercise test, in …
Effects Of Endurance Training On Skeletal Muscle Mass And Inflammation In A Rat Model Of Heart Failure,
2024
Texas A&M University
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 …
Greater Macrovascular But Not Microvascular Function In Hispanic Adults,
2024
The University of Texas at Austin
Greater Macrovascular But Not Microvascular Function In Hispanic Adults, Justo Perez Iii, Randy Liu, Ruby A. Nyarko, Ethan Joergensen, Jasdeep Kaur
International Journal of Exercise Science: Conference Proceedings
According to the 2023 AHA Heart Disease and Stroke Statistics update, Hispanics exhibit the highest prevalence of type II diabetes (men: 14.5%, women 12.3%) compared to non-Hispanic White (NHW men: 11.5%, women 7.7%) and Non-Hispanic Black (men: 11.8%, women 13.3%). Endothelial dysfunction is a precursor to cardiovascular diseases including type II diabetes; however, it remains unknown whether healthy asymptomatic Hispanic adults present a reduced endothelial function before the onset of cardiovascular symptoms. Although two previous studies have compared the endothelial function in Hispanic and Non-Hispanic White individuals, these studies included smokers and obese individuals. PURPOSE: To date, no study …
Racial Differences In Cerebral Hemodynamics During Aerobic Exercise,
2024
The University of Texas at Arlington
Racial Differences In Cerebral Hemodynamics During Aerobic Exercise, Ziba Taherzadeh, Claire E. Kissel, Taha Alhalimi, Paul J. Fadel
International Journal of Exercise Science: Conference Proceedings
Young healthy non-Hispanic Black (BL) adults have an attenuated increase in blood flow to working skeletal muscle during exercise compared to non-Hispanic white (WH) adults. Cerebral blood flow also increases during exercise; however, previous work has mainly included WH adults. There are no studies investigating potential differences in cerebral vascular responses to exercise in BL adults. PURPOSE: To compare middle cerebral artery velocity (MCAv) and cerebral vascular conductance index (CVCi) during exercise in BL adults to WH adults. We tested the hypothesis that BL adults have a blunted increase in MCAvmean and CVCi response during light and moderate intensity …
Comparison Of Overground, Motorized Treadmill And Non-Motorized Treadmill Gait,
2024
Southwestern University
Comparison Of Overground, Motorized Treadmill And Non-Motorized Treadmill Gait, Kevan D. Kennedy, Scott P. Mclean, Emma Williams
International Journal of Exercise Science: Conference Proceedings
Shaulis et al., (2022) found that walking on a non-motorized treadmill (NMT) elicited greater EMG activity from plantar flexor (PF) muscles compared to walking overground (OG) and on a motorized treadmill (MT). PURPOSE: To compare kinematics, kinetics and EMG in OG, MT, and NMT walking. METHODS: Twenty-one healthy adults (24.4±7.2 yrs, 1.75±0.09 m, 75.4±13.1 kg) completed one trial of walking at 3.0 mph in each of three modes (OG, MT, NMT). All dependent measures were averaged across a minimum of two consecutive gait cycles. Surface EMG of the Gastrocnemius (GA), and Tibialis Anterior (TA) was collected at 1000 …
Observation Of Jump Height, Peak Propulsive Force, Braking Force, And Loading Force In Acrobatics And Tumbling Athletes During A Completive Season: Pilot,
2024
University of Mary Hardin-Baylor
Observation Of Jump Height, Peak Propulsive Force, Braking Force, And Loading Force In Acrobatics And Tumbling Athletes During A Completive Season: Pilot, Katelyn Kolodziejczyk, Jaci Davis, Alyssa Faterkowski, Nikolas Keratsopoulos, Robert Mills, Jayden Widener, Lemuel W. Taylor Iv, Mandy E. Parra
International Journal of Exercise Science: Conference Proceedings
Acrobatics and tumbling is a women’s sport comprised of 3 different positions: base, top, and tumbler. Each position endures substantial impact on the musculotendinous unit, however, tumblers experience the greatest lower extremity eccentric impact leading to a high injury rate. Consistent athlete monitoring may lead to injury prevention and better insights into training. PURPOSE: The purpose of this study is to pilot observational differences in jump height (JH), peak propulsive force (PPF), peak braking force (PBF), and peak landing force (PLF) during the counter movement jump (CMJ) in acrobatics and tumbling between tumbler and non-tumbler athletes during a …
Blood Pressure Variability In Young Male Adult Habitual Vapers,
2024
The University of Texas at Arlington
Blood Pressure Variability In Young Male Adult Habitual Vapers, Rie V. Conley, Claire E. Kissell, Ziba Taherzadeh, Danny Dubroy, Benjamin E. Young, Ziyad Ben Taleb, Paul J. Fadel
International Journal of Exercise Science: Conference Proceedings
The use of e-cigarettes (i.e., vaping) has risen dramatically in the last few years. Vaping is more appealing and accessible to young people than traditional smoking. The ease of use can increase the frequency of vaping, which may increase the amount of nicotine consumed. Nicotine is a potent vasoconstrictor that may also affect blood pressure (BP). Indeed, previous studies have shown that traditional cigarette smoking increases BP variability. This is noteworthy because elevated BP variability has been shown to predict future development of cardiovascular disease. However, whether habitual vaping influences BP variability remains unknown. PURPOSE: To test the hypothesis …
Assessing The Differences Between Chewing And Swallowing Arugula Extract Capsules On The Concentrations Of Nitric Oxide Metabolites In Metabolically Healthy Males,
2024
Baylor University
Assessing The Differences Between Chewing And Swallowing Arugula Extract Capsules On The Concentrations Of Nitric Oxide Metabolites In Metabolically Healthy Males, Tomas J. Chapman-Lopez, Leroy Bolden, Dylan T. Wilburn, Jeffery L. Heileson, Rodney Sturdivant, Andrew R. Gallucci, Leslee K. Funderburk, Jeffrey S. Forsse
International Journal of Exercise Science: Conference Proceedings
Previous literature has examined the benefits of consuming nitrate (NO3)-rich crops (e.g., beetroot, spinach, watercress, arugula) on endothelial function due to their positive influence on nitric oxide (NO) production from the utilization of nitrate-reducing bacteria in the oral microbiome. However, there has yet to be a study addressing how the method of consumption may influence the role the oral microbiome plays in the degradation of NO3 to NO from consuming an encapsulated NO3-rich crop. PURPOSE: To determine the differences in NO metabolite concentrations following two different methods (e.g., chewing, swallowing) of consuming the encapsulated arugula extract. METHODS: Eight, …
Relationship Between Intestinal Permeability And Microvascular Responses In A High-Risk Hispanic Population Of The Rio Grande Valley,
2024
University of Texas Rio Grande Valley
Relationship Between Intestinal Permeability And Microvascular Responses In A High-Risk Hispanic Population Of The Rio Grande Valley, Sophia M. Moreno, Alissa Olvera, Abigail Gomez, Ryan Russell, Melody Cantu, Andrea Toledo, Yu Lun Tai
International Journal of Exercise Science: Conference Proceedings
The Rio Grande Valley (RGV) has ~3x higher rates of diagnosed cardiovascular disease (CVD) and type 2 diabetes (T2D) than the US, which combine to be the leading cause of preventable death in the developed world. Microvascular blood flow (MBF) responses are an early indicator of vascular insulin resistance, and is blunted with obesity, T2D, and those at high risk for T2D. We have previously shown that apparently healthy people in the RGV display impaired MBF responses, helping explain the disparities noted with chronic disease. However mechanisms explaining this early vascular insulin resistance remain unexplored. Recent studies indicate that increased …
Exercise Pressor Response In Hispanic Adults With Family History Of Hypertension,
2024
The University of Texas at Austin
Exercise Pressor Response In Hispanic Adults With Family History Of Hypertension, Ashlesha D. Dalve, Justo Perez Iii, Ruby A. Nyarko, Jasdeep Kaur
International Journal of Exercise Science: Conference Proceedings
Family history of hypertension (FHH), being an unmodifiable risk factor, increases probability of developing hypertension and other cardiovascular diseases. The prevalence of hypertension in Hispanic/Latino (H/La) males is 50.3%, while it is 48.9% in non-Hispanic white (NHW) males and 57.5% in non-Hispanic black (NHB) males. Among adolescents aged 8 to 17, H/La youth has the highest incidence of hypertension as compared to all other races. It is evident that young normotensive adults with positive family history of hypertension (+FHH) exhibit exaggerated exercise pressor response. Additionally, a higher sympathetic activity to cold pressor test (CPT) was found in normotensive NHB adults …
Systemic Inflammation Persists In Rats With Heart Failure After A Short-Term Endurance Training Protocol,
2024
Texas A&M University
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). …
Glutathione Peroxidase Enzymatic Activity In Response To Transient Hypercapnic Aerobic Exercise,
2024
Baylor University
Glutathione Peroxidase Enzymatic Activity In Response To Transient Hypercapnic Aerobic Exercise, Ryan Curtis, Jose M. Moris, Christian J. Chang, Kylie Allen, Brandon Arnold, Yunsuk Koh
International Journal of Exercise Science: Conference Proceedings
Nasal breathing (NB) during aerobic exercise has gained attention due to its potential benefits to physical performance and health adaptations. However, it is unclear how an NB-induced increase in the partial pressure of CO2 (PetCO2) affects the enzymatic activity of glutathione peroxidase (GPX). PURPOSE: To determine the activity of GPX after 1-month of transient hypercapnic training induced by NB. METHODS: Fourteen males (age = 20.57 ± 1.22 yrs) were randomized to either the NB (n = 8) or combined breathing (CB, n = 6) group. Participants performed supervised aerobic training 4 times per week at ~70% …
Maximal Isometric Contraction In Skeletal Muscle Of Endurance Trained Rats With Heart Failure,
2024
Texas A&M University
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 …
