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Stationary Lower-Body Movement System To Mitigate Muscle Atrophy In Spaceflight, Joseph Mallillin, Catherine Faubel, Emma Becker, Jessica Brent, Alyssa Flores, Madison Hennessy, Hope Kennedy, Kenneth Ponitz, Daniela Venegas, Cally Wacaster, Cayla Clark, Benjamin Easter, Brandon R. Rigby
Stationary Lower-Body Movement System To Mitigate Muscle Atrophy In Spaceflight, Joseph Mallillin, Catherine Faubel, Emma Becker, Jessica Brent, Alyssa Flores, Madison Hennessy, Hope Kennedy, Kenneth Ponitz, Daniela Venegas, Cally Wacaster, Cayla Clark, Benjamin Easter, Brandon R. Rigby
International Journal of Exercise Science: Conference Proceedings
Long-duration spaceflight can elicit increases in muscle disuse, thereby leading to a decrease in muscle mass. The consequences of these negative effects include decreases in muscle strength and mobility, and an increase in injury risk. The large muscle groups of the lower body are particularly susceptible to these adaptations. PURPOSE: To design, fabricate, and test a compact, lightweight device that incorporates pneumatic principles and airflow restriction to provide varied resistance during lower-body movements. METHODS: The custom device was originally designed in three-dimensional modeling software (Solidworks Premium, Waltham, MA). Components of the device included: boots, accompanying braces, ball valves, …
Comparison Of Heat Shock Protein Expression, Cognitive Performance, And Self-Reported Pain Following One Hour Of Passive Heating Or Walking In Older Adults: A Preliminary Analysis, Cayla E. Clark, Nicole Varone, Joseph Mallillin, Alyssa Flores, George A. King, Brandon R. Rigby
Comparison Of Heat Shock Protein Expression, Cognitive Performance, And Self-Reported Pain Following One Hour Of Passive Heating Or Walking In Older Adults: A Preliminary Analysis, Cayla E. Clark, Nicole Varone, Joseph Mallillin, Alyssa Flores, George A. King, Brandon R. Rigby
International Journal of Exercise Science: Conference Proceedings
Heat shock proteins (HSP) are major components of the cellular chaperone network responsible for regulating protein amyloid aggregation, and may have a neuroprotective effect against certain diseases. PURPOSE: This study aims to observe the level of HSP expression following one hour of aerobic exercise or whole-body passive heating in older adults. METHODS: Twenty older adults (age: 68.5 + 4.23 years, BMI: 26.9 + 4.3 kg/m2, 11 female) participated in a randomized controlled trial, repeated for time. Participants completed either one hour of moderate intensity walking on a treadmill (TM; 65-75% of age-predicted maximum heart rate), one …
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 …
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 …
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 …
The Effect Of Eccentric Muscle-Damaging Exercise In The Heat On Perceptual Stress Measures During Future Exertional-Heat Exposure, Erica A. Hollis, Ryan Dunn, Casey Appell, Marcos Keefe, Nigel Jiwan, Hui-Ying Luk, Yasuki Sekiguchi
The Effect Of Eccentric Muscle-Damaging Exercise In The Heat On Perceptual Stress Measures During Future Exertional-Heat Exposure, Erica A. Hollis, Ryan Dunn, Casey Appell, Marcos Keefe, Nigel Jiwan, Hui-Ying Luk, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
Multiple bouts of exertional-heat exposure can assist in reducing the magnitude of perceived stress during future heat exposures. Recently, eccentric muscle-damaging exercise has also been proposed as a beneficial preconditioning modality to assist with exercise in the heat due to the potential effects on improving physiological and thermoregulatory responses during exercise. PURPOSE: This study investigated the effect of muscle-damaging exercise in the heat, compared to a thermoneutral condition, on minimizing perceptual stress during future exertional-heat exposure. METHODS: Ten physically active males (mean ± SD; age, 23 ± 3 years; body mass, 78.7 ± 11.5 kg; height, 176.9 ± …
Sublingual Sufentanil Attenuates Perceived Pain, But Not Blood Pressure Responses, During A Cold Pressor Test, Caitlin P. Jarrard, Zachary J. Mckenna, Whitley C. Atkins, Josh Foster, Joseph C. Watso, Craig G. Crandall
Sublingual Sufentanil Attenuates Perceived Pain, But Not Blood Pressure Responses, During A Cold Pressor Test, Caitlin P. Jarrard, Zachary J. Mckenna, Whitley C. Atkins, Josh Foster, Joseph C. Watso, Craig G. Crandall
International Journal of Exercise Science: Conference Proceedings
Sublingual sufentanil was developed to reduce pain following a traumatic injury in the field (e.g., battlefield). However, it is unknown whether an analgesic dose of sufentanil affects cardiovascular responses to a painful stimulus in humans. PURPOSE: We tested the hypothesis that sublingual sufentanil blunts pain perception and the accompanying cardiovascular responses during a cold pressor test (CPT). METHODS: Twenty-nine adults, 15 males and 14 females (age: 29 ± 5 years, body mass: 74 ± 8 kg, body mass index: 25 ± 2 kg/m2) participated in this double-blind, randomized, crossover, placebo-controlled trial. Following sublingual administration of sufentanil (30 µg) …
Sleep Duration Is Increased Following Muscle Damaging Exercise In Hot Environmental Conditions, Marcos Keefe, Ryan A. Dunn, Casey R. Appell, Nigel C. Jiwan, Jan-Joseph S. Rolloque, Hui-Ying Luk, Yasuki Sekiguchi
Sleep Duration Is Increased Following Muscle Damaging Exercise In Hot Environmental Conditions, Marcos Keefe, Ryan A. Dunn, Casey R. Appell, Nigel C. Jiwan, Jan-Joseph S. Rolloque, Hui-Ying Luk, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
Sleep and recovery measures are typically negatively affected by a muscle-damaging bout of exercise. However, it remains unknown if the additive effects of hot environmental conditions, resulting in increased core temperature and other thermoregulatory responses during the exercise bout, further progress changes in quantity and performance quality of sleep duration. PURPOSE: To investigate the effect of muscle-damaging exercise in the heat, compared to a thermoneutral condition, on sleep and recovery measures. METHODS: Ten healthy males (age: 23 ± 3yr; body mass: 78.7 ± 11.5kg; height: 176.9 ± 5cm; lactate threshold [LT]: 9.7 ± 1.0km.hr-1) performed two …
Effects Of Chronotype And Social Jetlag On Blood Biomarkers During Wlff 2-Week Critical Training Period, Elias M. Malek, Joseph A. Sol, Katherine Christison, Charles L. Dumke, John Quindry, Graham Mcginnis 8954626
Effects Of Chronotype And Social Jetlag On Blood Biomarkers During Wlff 2-Week Critical Training Period, Elias M. Malek, Joseph A. Sol, Katherine Christison, Charles L. Dumke, John Quindry, Graham Mcginnis 8954626
International Journal of Exercise Science: Conference Proceedings
Chronotype, an individual's natural preference towards activity during certain times of the day, influences the interaction between one's internal circadian rhythms and the external environment. When this is disrupted, it can result in social jet lag (SJL), the misalignment between our sleep/wake schedule on work days and free days. Wildland firefighters grapple with unpredictable and intense demands of their job, making them vulnerable to the challenges posed by SJL. Their duties necessitate abrupt changes in active hours, pushing against their body's inherent circadian preferences. SJL is a behavioral trait that may alter an individual's ability to respond to high stress …
Gastrointestinal Cell Injury And Percieved Symptoms After Running The Boston Marathon, Malone T. Levanger, Melani R. Kelly, Dawn M. Emerson, Brendon P. Mcdermott, Whitley C. Atkins, Cory L. Butts, R Mark Laursen, Christopher Troyanos, Andrew Duckett, Jacob A. Siedlik
Gastrointestinal Cell Injury And Percieved Symptoms After Running The Boston Marathon, Malone T. Levanger, Melani R. Kelly, Dawn M. Emerson, Brendon P. Mcdermott, Whitley C. Atkins, Cory L. Butts, R Mark Laursen, Christopher Troyanos, Andrew Duckett, Jacob A. Siedlik
International Journal of Exercise Science: Conference Proceedings
Gastrointestinal (GI) disturbances are a prevalent cause of marathon related complaints, and in extreme cases can promote life-threatening conditions such as exertional heat stroke. PURPOSE: Our aim was to study intestinal cell injury (via intestinal fatty acid binding protein [I-FABP]) and perceived GI distress symptoms among marathon runners. Potential risk factors (e.g., inadequate sleep) that could exacerbate GI disturbances in healthy, trained endurance runners were also examined. METHODS: A parallel mixed-methods study design was utilized. 2019 Boston Marathon participants were recruited via email. Before the race subjects completed surveys describing demographics and training history. Immediately pre-race, post-race, and 24-hours post-race …
Local Sweating Response To Varying Intradermal Electrical Stimulation Patterns, Gary W. Mack
Local Sweating Response To Varying Intradermal Electrical Stimulation Patterns, Gary W. Mack
International Journal of Exercise Science: Conference Proceedings
The local sweat rate response (LSR) to intradermal electrical stimulation generates a sigmodal stimulus-response curve with a peak sweat rate generated by a 30 s period of continuous stimuli at a frequency of 8-16 Hz. The firing pattern of the sudomotor nerve driving sweat gland function in vivo, however, display a bursting firing pattern. Purpose: To compare the LSR to a 30 s continuous intradermal electrical stimulation frequency to a 30 s bursting pattern with a similar total number of stimuli. We hypothesize that there would be no difference in the LSR response between the two stimuli patterns. Methods: Subjects …
Environmental Heat Stress And Physiological Heat Strain In Construction Workers During Work In The Summer, Jonathan Specht, Erica Tourula, M. Jo Hite, Serena Garcia, Charlie Walker, Hillary Yoder, Zachary Schlader, Fabiano Amorim
Environmental Heat Stress And Physiological Heat Strain In Construction Workers During Work In The Summer, Jonathan Specht, Erica Tourula, M. Jo Hite, Serena Garcia, Charlie Walker, Hillary Yoder, Zachary Schlader, Fabiano Amorim
International Journal of Exercise Science: Conference Proceedings
Construction workers are thirteen times more likely to die from heat-related illnesses compared to the general population. This elevaled risk results from both metabolic heat production due to the physical demands of construction work associated with high environmental heat stress. However, it is important to recognize that the magnitude of heat stress experienced varies across job types withing the construction industry reflecting the diversity of tasks performed. In addition, environmental heat stress can significantly vary for workers based on whether they operate in covered or uncovered work areas, creating varying levels of heat sttres, particularly during during summer months. Notably, …
Repeated, Short Cold-Water Immersions Are Sufficient To Habituate To The Cold, But Do Not Lead To Adaptations During Exercise In Normobaric Hypoxia, Geoffrey T. Dorsett, Trevor L. Gillum
Repeated, Short Cold-Water Immersions Are Sufficient To Habituate To The Cold, But Do Not Lead To Adaptations During Exercise In Normobaric Hypoxia, Geoffrey T. Dorsett, Trevor L. Gillum
International Journal of Exercise Science: Conference Proceedings
Cold and hypoxia naturally exist together, yet it is unknown if habituation to the cold can lead to improved exercise in hypoxia. PURPOSE: To assess the effects of repeated cold-water immersions (CWI) on pulmonary, metabolic, and sympathoadrenal responses to graded exercise in hypoxia. METHODS: 16 (2 female) participants (age: 21.2 ± 1.3 years; body fat: 12.3 ± 7.7 %; body surface area 1.87 ± 0.16 m2, VO2peak: 48.7 ± 7.9 mL/kg/min) underwent 6 CWI in 12.0 ± 1.2° C. Each CWI was 5 minutes, twice daily, separated by ≥4 hours, for 3 consecutive days, …
Pressurized Device For Mitigating Atrophy In Soleus During Long-Duration Spaceflight, Ramona Tovar Briones, Kimhab Sor, Breandrea Diaz, Dona Varghese, Benjamin Easter, Hunter Alvis, Brandon R. Rigby
Pressurized Device For Mitigating Atrophy In Soleus During Long-Duration Spaceflight, Ramona Tovar Briones, Kimhab Sor, Breandrea Diaz, Dona Varghese, Benjamin Easter, Hunter Alvis, Brandon R. Rigby
International Journal of Exercise Science: Conference Proceedings
A major concern with long duration spaceflight, skeletal muscle atrophy is most detrimental in lower limb musculature, particularly in muscles critical for proper gait, such as the soleus. The decline of muscle activation and the suppression of sensory input from plantar sole mechanoreceptors can add to the attenuation of skeletal muscle health during spaceflight. More specifically, inhibition of sensory input from sole receptors, such as with gravitational unloading, decreases selective activation, thereby negatively affecting muscle tone and inevitably resulting in lower limb atrophy. PURPOSE: To design, fabricate, and test a specialized boot with an insole that applies oscillating pneumatic …
Thirst Sensation Does Not Effect Reaction Time But Decreses Mood In Men, Alan Ky, Hui-Ying Luk, Jarrod Blinch, Yasuki Sekiguchi
Thirst Sensation Does Not Effect Reaction Time But Decreses Mood In Men, Alan Ky, Hui-Ying Luk, Jarrod Blinch, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
Exercise in hot environments results in dehydration accompanied by thirst sensation, a vital signal for fluid homeostasis. While cognitive performance and mood have been studied with exercise in hot environments and in dehydration states, no studies have investigated the effect of inducing thirst on cognitive performance and mood. PURPOSE: To investigate the effect of inducing thirst on cognitive performance and mood. METHODS: Twelve recreationally active men (mean±SE age: 29±3.6 years; body mass: 74.7±2.3 kg; height, 179.4±2.0 cm; maximal oxygen consumption [VO2max]: 49.8±1.9 ml·kg−1·min−1) performed 90 mins of cycling at 55% VO2max …
Assessing The Most Effective Heat Adaptation Method For Endurance Performance In The Heat: A Systematic Review And Meta-Analysis, Dorian-David M. Smith, Ryan Dunn, Yasuki Sekiguchi
Assessing The Most Effective Heat Adaptation Method For Endurance Performance In The Heat: A Systematic Review And Meta-Analysis, Dorian-David M. Smith, Ryan Dunn, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
The consequences of increasing global warming and the globalization of elite sport have produced increased exposure to episodes of extreme heat for athletes at major sporting events. Heat acclimatization and acclimation (HA) are widely used heat mitigation strategies that aim to help athletes combat the effects of heat-stress on athletic performance and susceptibility to exertional-heat illness. PURPOSE: To assess and quantify the effect of different HA methods on the magnitude of performance and physiological adaptations in endurance trained athletes METHODS: A literature search was conducted in PubMed, SPORTDiscus, Scopus, and Cochrane-Library, with data from 23 studies gathered for …
Rebreathing-Induced Hypoxia Improves Insulin Sensitivity In Adults With Type 2 Diabetes, Jiahui Zhao, Jamie G. Guei, Sophie Lalande
Rebreathing-Induced Hypoxia Improves Insulin Sensitivity In Adults With Type 2 Diabetes, Jiahui Zhao, Jamie G. Guei, Sophie Lalande
International Journal of Exercise Science: Conference Proceedings
Hypoxia stimulates glucose uptake through an insulin-independent pathway. PURPOSE: To examine the acute effect of rebreathing-induced hypoxia on plasma glucose and insulin levels in adults with type 2 diabetes. We hypothesized that rebreathing-induced hypoxia would attenuate the increase in glucose and insulin levels during an oral glucose tolerance test. METHODS: Nine individuals with type 2 diabetes (4 women, age: 53±10 years, body mass index: 35±7 kg/m2, HbA1c: 7.1±0.5%) visited the laboratory on two occasions. On both visits, a 2-hour, 75 g oral glucose tolerance test was conducted while simultaneously performing a rebreathing-induced hypoxia protocol (RIH) or breathing room …
Performance Improvements From Heat Acclimation, Heat Acclimatization, Kelvin O. Obazughanmwen, Ryan Dunn, Yasuki Sekiguchi
Performance Improvements From Heat Acclimation, Heat Acclimatization, Kelvin O. Obazughanmwen, Ryan Dunn, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
Heat acclimation/acclimatization (HA/HAz) are important heat mitigation strategies that help develop heat tolerance from prolonged and repeated exposure to a hot environment, subsequently improving exercise performance in the heat. PURPOSE: To assess and quantify the magnitude of performance benefits of short- (STHA), medium- (MTHA), and long-term HA (LTHA) in endurance-trained athletes. METHODS: A literature search was conducted in PubMed, SPORTDiscus, Scopus, and Cochrane-Library, with data from 23 studies extracted for analysis. Subgroup analysis distinguished differences in performance and thermoregulatory adaptations between short-, medium- and long-term HA interventions. RESULTS: HA produced significant improvements in time trial performance (Effect …
The Effect Of Dehydration And High-Volume Resistance Exercise On Intracellular And Local Muscular Fluid Shifts - A Pilot Study, Carson Lewis, Nigel Jiwan, Casey Appell, Isabell R. Trevino, Ryanoneil Ellis, Raoul Sterling, Jan-Joseph S. Rolloque, Alan T. Ky, Marcos Keefe, Ryan Dunn, Yasuki Sekiguchi, Hui-Ying Luk
The Effect Of Dehydration And High-Volume Resistance Exercise On Intracellular And Local Muscular Fluid Shifts - A Pilot Study, Carson Lewis, Nigel Jiwan, Casey Appell, Isabell R. Trevino, Ryanoneil Ellis, Raoul Sterling, Jan-Joseph S. Rolloque, Alan T. Ky, Marcos Keefe, Ryan Dunn, Yasuki Sekiguchi, Hui-Ying Luk
International Journal of Exercise Science: Conference Proceedings
Hypertonic hypovolemia (dehydration) could disrupt the balance between extracellular water (ECW) and intracellular water (ICW). Notably, high-volume resistance exercise (RE) accumulates metabolites resulting in acute muscle swelling (increased ICF). However, the impact of hypertonic hypovolemia state on ECW and ICW distribution after RE is not known. PURPOSE: To determine the effect of acute dehydration on fluid balance after RE. METHODS: 7 resistance-trained males completed two identical high-volume RE, separated by two weeks (bilateral leg press and knee extensions exercises [5 sets of 10 repetitions at 80% of 1 repetition maximum]) either in a euhydrated (EH; urine specific gravity [USG] …
Sex Differences In The Accuracy Of Wut (Weight, Urine Color, Thirst) Diagrams Assessing Hydration Status, Jan-Joseph Rolloque, Marcos Keefe, Nigel Jiwan, Casey Appell, Madison Pomroy, Huiying Luk, Yasuki Sekiguchi
Sex Differences In The Accuracy Of Wut (Weight, Urine Color, Thirst) Diagrams Assessing Hydration Status, Jan-Joseph Rolloque, Marcos Keefe, Nigel Jiwan, Casey Appell, Madison Pomroy, Huiying Luk, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
The WUT (Weight, Urine Color, Thirst) Venn diagram is a practical method to assess hydration status using percent body mass loss (%BML), urine color (UCOL), and thirst perception (TP). However, sex differences and the accuracy of WUT diagrams between males and females has not yet been investigated. PURPOSE: To observe sex differences in the accuracy of WUT diagrams assessing hydration status. METHODS: 8 males [M] (age: 21 ± 3; mass: 76.3 ± 15.6 kg) and 5 females [F] (age: 22 ± 2; mass: 60.5 ± 13.6) visited the laboratory twice a day (morning (7:00am-9:00am) and afternoon …
Morning Versus Afternoon Body Mass In Free-Living Or Controlled Euhydration, Madi M. Pomroy, Marcos Keefe, Nigel Jiwan, Jan-Joseph S. Rolloque, Casey Appell, Courteney L. Benjamin, Hui-Ying Luk, Yasuki Sekiguchi
Morning Versus Afternoon Body Mass In Free-Living Or Controlled Euhydration, Madi M. Pomroy, Marcos Keefe, Nigel Jiwan, Jan-Joseph S. Rolloque, Casey Appell, Courteney L. Benjamin, Hui-Ying Luk, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
The standard protocol to assess hydration status is by measuring body mass in the early morning without controlling fluid intake. However, obtaining first-morning body mass is not necessarily feasible for many situations, for example, most physical activities take place in the afternoon. Thus, first-morning body mass might not be practical to assess hydration status. PURPOSE: To investigate first-morning body mass versus afternoon body mass in free- living and controlled euhydration. METHODS: 9 males (age: 21 ± 2; mass: 79.7 ± 17.8 kg) and 5 females (age: 22 ± 2; mass: 60.5 ± 13.6 kg) visited the laboratory in …
The Effect Of Hydration On Readiness And Recovery Before And After Resistance Exercise- A Pilot Study, Cherish A. Dunlap, Nigel Jiwan, Casey Appell, Ryanoneil Ellis, Isabell R. Trevino, Carson Lewis, Raoul Sterling, Marcos Keefe, Ryan Dunn, Alan T. Ky, Jan-Joseph S. Rolloque, Kelly B. Elliot, Hui-Ying Luk, Yasuki Sekiguchi
The Effect Of Hydration On Readiness And Recovery Before And After Resistance Exercise- A Pilot Study, Cherish A. Dunlap, Nigel Jiwan, Casey Appell, Ryanoneil Ellis, Isabell R. Trevino, Carson Lewis, Raoul Sterling, Marcos Keefe, Ryan Dunn, Alan T. Ky, Jan-Joseph S. Rolloque, Kelly B. Elliot, Hui-Ying Luk, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
Dehydration can disturb sleep which is essential for the readiness and recovery process. However, the role of hydration on readiness and recovery indicated by low resting heart rate (RHR) and high heart rate variability (HRV) before and after resistance exercise (RE) is not known. PURPOSE: The purpose of this study was to examine the effect of hydration status on readiness and recovery before and after RE. METHODS: Seven resistance-trained men (age: 21±1 years; weight: 77.8±11.0 kg; height: 177.4±5.3 cm) performed a series of RE that included bilateral leg press and knee extensions (5 sets of 10 repetitions at …
The Effects Of Heat Acclimatization, Heat Acclimation, And Intermittent Heat Training On Maximal Oxygen Uptake, Ryan A. Dunn, Lauren A. Fry, Yasuki Sekiguchi, Courteney L. Benjamin, Ciara N. Manning, Robert A. Huggins, Rebecca L. Stearns, Douglas J. Casa
The Effects Of Heat Acclimatization, Heat Acclimation, And Intermittent Heat Training On Maximal Oxygen Uptake, Ryan A. Dunn, Lauren A. Fry, Yasuki Sekiguchi, Courteney L. Benjamin, Ciara N. Manning, Robert A. Huggins, Rebecca L. Stearns, Douglas J. Casa
International Journal of Exercise Science: Conference Proceedings
Maximal oxygen uptake (VO2max) is an important determinant of endurance performance. Heat acclimation/acclimatization (HA/HAz) strategies elicit improvements in endurance performance. When heat exposure is reduced, intermittent heat training (IHT) is potentially beneficial to alleviate HA/HAz adaptation decay, however corresponding VO2max responses are unknown. PURPOSE: To determine the effects of HA/HAz and IHT on VO2max in endurance runners and identify how long VO2max adaptations remain following removal of repeated heat exposure. METHODS: Twenty-seven male endurance runners (mean ± SD; age, 36 ± 12 years; body mass, 73.03 ± 8.97 kg; height, 178.81 ± 6.39 cm; VO …
Relationships Between Morning And Afternoon Wut (Weight, Urine Color, And Thirst) Criteria And Hydration Markers, Marcos S. Keefe, Jan-Joseph S. Rolloque, Nigel C. Jiwan, Casey R. Appell, Tyler Mccollum, Hui-Ying Luk, Yasuki Sekiguchi
Relationships Between Morning And Afternoon Wut (Weight, Urine Color, And Thirst) Criteria And Hydration Markers, Marcos S. Keefe, Jan-Joseph S. Rolloque, Nigel C. Jiwan, Casey R. Appell, Tyler Mccollum, Hui-Ying Luk, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
A Venn diagram decision tool consisting of weight, urine color, and thirst (WUT) is suggested to measure hydration status. The WUT Venn diagram has been used as a practical hydration status assessment tool; however, this relationship has only been investigated using a first-morning urine sample. PURPOSE: To investigate relationships between morning and afternoon WUT criteria, blood and urine markers. METHODS: Eight men (age: 21 ± 3; mass: 76.3 ± 15.6 kg) and five women (age: 22 ± 2; mass: 60.5 ± 13.6 kg) completed the study. Body mass, urine color, urine specific gravity (USG), urine osmolality (UOSM …
Physiological Stress Responses To A Live-Fire Training Evolution In Career Firefighters, Drew E. Gonzalez, Sarah E. Johnson, Courtney C. Dillard, Ryan J. Sowinski, Steven E. Martin, Lisa C. Colvin, Matthew J. Mcallister
Physiological Stress Responses To A Live-Fire Training Evolution In Career Firefighters, Drew E. Gonzalez, Sarah E. Johnson, Courtney C. Dillard, Ryan J. Sowinski, Steven E. Martin, Lisa C. Colvin, Matthew J. Mcallister
International Journal of Exercise Science: Conference Proceedings
Firefighters have a physically demanding job that exposes them to many specific and unique stressors, which contribute to cardiovascular disease (CVD) risk (i.e., cardiovascular strain, inflammation, and oxidative stress) or even mortality. At present, the literature lacks data evaluating these physiological stress responses amongst firefighters in any realistic or simulated scenarios, such as a live-fire training evolution (LFTE). Given the elevated risk of premature mortality, there is a critical need to better understand the physiological stress responses to an LFTE. This information could aid in developing nutritional, training, and other various interventions to mitigate stress load and reduce the incidence …
Evaluation And Validity Of A Predictive Equation For Measuring Core Temperature During Exercise In Heat Stress, Robert J. Castro, Alexander J. Gonsalves, Edgar B. Doolan, Jochen Kressler
Evaluation And Validity Of A Predictive Equation For Measuring Core Temperature During Exercise In Heat Stress, Robert J. Castro, Alexander J. Gonsalves, Edgar B. Doolan, Jochen Kressler
International Journal of Exercise Science: Conference Proceedings
Exercising in the heat is very common yet can pose significant health risks such as heat exhaustion and heat stroke when core temperature exceeds 38°C and 40°C, respectively. However, current methods of core temperature measurement are invasive and impractical. Recent research indicates that core temperature can be predicted with two non-invasive inputs, heart rate (HR) and skin temperature. PURPOSE: The objective of this study was to assess the validity and reliability of this predictive equation against the direct measurement of core temperature. METHODS: Participants (n = 11) cycled in an environmental chamber (40°C, 40% humidity) at 75% …
Effect Of Maternal Exercise On Adverse Cardio-Pulmonary Responses In Offspring Exposed To Post-Natal Chronic Hypoxia, Jonathan Specht, Eric Leslie, Rebekah Gridley, Vincent Luna, Zachary Mckenna, David Jones, Benjamin Lantz, Mika Moriwaki, Laura Gonzales Bosc, Ann Gibson, Christine Mermier, Sean Wilson, Michael Deyhle
Effect Of Maternal Exercise On Adverse Cardio-Pulmonary Responses In Offspring Exposed To Post-Natal Chronic Hypoxia, Jonathan Specht, Eric Leslie, Rebekah Gridley, Vincent Luna, Zachary Mckenna, David Jones, Benjamin Lantz, Mika Moriwaki, Laura Gonzales Bosc, Ann Gibson, Christine Mermier, Sean Wilson, Michael Deyhle
International Journal of Exercise Science: Conference Proceedings
Emerging evidence shows exercise by women throughout pregnancy (i.e., maternal exercise) endows the offspring with positive health benefits and resistance to many diseases later in life. PURPOSE: To determine if maternal exercise reduces unfavorable cardiopulmonary development and improves exercise capacity in offspring after chronic hypoxic exposure throughout early life. METHODS: Female adult C57BL/6J mice were randomly assigned to one of the following groups: high altitude, sedentary (HS), high altitude, active (HE), or the respective, low-altitude conditions (LS or LE). Pregnant females in the exercise groups performed voluntary wheel running during mating and the perinatal period (about 4 weeks). …
Validity Of A Novel Sensor For Noninvasive Measurement Of Core Body Temperature In Humans During Exercise, Colin Atkins, Grace Handler, Casandra Mendez, Alvin Molina, Lauryn Outlaw, Matthew G. Becker, Matthew M. Schubert
Validity Of A Novel Sensor For Noninvasive Measurement Of Core Body Temperature In Humans During Exercise, Colin Atkins, Grace Handler, Casandra Mendez, Alvin Molina, Lauryn Outlaw, Matthew G. Becker, Matthew M. Schubert
International Journal of Exercise Science: Conference Proceedings
The measurement of core body temperature during exercise can be useful for athletic performance and the prevention of heat-related illness. Non-invasive sensors have been developed for the measurement of core body temperature, but more data on their validity and reliability is needed before they can be recommended for widespread adoption. PURPOSE: The purpose of the present study was to evaluate a noninvasive core temperature sensor (TCore) during exercise compared to an ingestible thermistor (TPill). METHODS: Twenty men and women (25 ± 4 years) participated in this study. Participants completed 20 minutes of exercise at 60% age-predicted …
Correlation Between Previous Diagnosed Ankle Injuries And The Rate Of Diagnosed Osteoarthritis Within Athletic Trainers, Sarah Maples, Andi Green, Steve Simpson
Correlation Between Previous Diagnosed Ankle Injuries And The Rate Of Diagnosed Osteoarthritis Within Athletic Trainers, Sarah Maples, Andi Green, Steve Simpson
International Journal of Exercise Science: Conference Proceedings
While athletic trainers take care of many active individuals from prevention to rehabilitation of injury and illness, these healthcare professionals do not often apply the same concepts to their own health. After may years of standing along sidelines and other playing surfaces, they may often find themselves with osteoarthritis (OA) of various joints especially the ankle. PURPOSE: The purpose of this study is to expand the knowledge in certified or licensed athletic trainers regarding the rate of OA as it correlates to their own personal ankle injuries and to develop an understanding of how important it is as health …
Light Therapy Device For Entrainment Of Circadian Rhythm Desynchronization In Microgravity, Brittany Rust, Natalie Wilkinson, Keely Chapman, Avery Foreman, Andrea Kim, Andrea Martinez, Melanie Meek, Mercy Obanigba, Casey Rice, Eduardo Urias, Hunter Alvis, Brandon R. Rigby
Light Therapy Device For Entrainment Of Circadian Rhythm Desynchronization In Microgravity, Brittany Rust, Natalie Wilkinson, Keely Chapman, Avery Foreman, Andrea Kim, Andrea Martinez, Melanie Meek, Mercy Obanigba, Casey Rice, Eduardo Urias, Hunter Alvis, Brandon R. Rigby
International Journal of Exercise Science: Conference Proceedings
The circadian rhythm is an internal process of the brain that regulates the sleep-wake cycle. Outside environmental factors can affect the circadian rhythm such as light and dark. In microgravity, astronauts witness the sun rise and set approximately 16 times per day. A disruption (desynchronization) of the circadian rhythm may then occur, with some astronauts reporting to be less alert and unable to sufficiently complete tasks. PURPOSE: To design, fabricate, and test a pair of glasses that emit blue wavelengths of light peripheral to the eyes, for set periods of time, which may promote alertness in astronauts. METHODS: …