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Stress Levels Measured through Salivary Cortisol in Nationally Ranked Fencers

Description
Salivary cortisol is the least invasive way in measuring hormonal response during exercise without interruption. In nationally ranked fencers (n=21), changes in cortisol were monitored by measurement of salivary cortisol sampled throughout different rounds of three North American Cup tournaments during the 2017-2018 United States fencing season. The changes were…

Salivary cortisol is the least invasive way in measuring hormonal response during exercise without interruption. In nationally ranked fencers (n=21), changes in cortisol were monitored by measurement of salivary cortisol sampled throughout different rounds of three North American Cup tournaments during the 2017-2018 United States fencing season. The changes were also compared when looking at if a bout ended in a victory or defeat; the difference in rank between opponents; and the difference in score at the end of the bout. Immediately before the tournament cortisol levels were sampled, changes were in comparison to the initial sample as well as change from one bout to the next. The primary purpose of this study was to (a) compare how cortisol levels fluctuate during a tournament and (b) analyze cortisol levels to see if there is an optimal rage for performance. Eustress, “good stress” was considered optimal when the athletes were at peak performance. Here, peak performance means accomplishing the task, with the task being the bout ending in a victory. It was hypothesized that (a) cortisol levels would peak after a loss or stressful bout and (b) there would be an optimal range of cortisol for peak performance. This study supports the findings that cortisol peaks after a loss, and could point to optimal cortisol levels being more of an individualized range for each athlete. If these athletes can explicitly see just how their hormones rise and fall, then perhaps being more aware of these levels and being able to embrace them could lead to peak performance.
ContributorsVie, Jerica Nicole (Author) / Baluch, D. Page (Thesis advisor) / Sterner, Beckett (Committee member) / Cataldo, Donna (Committee member) / Arizona State University (Publisher)
Created2018
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Metabolic Adaptations to Aerobic Exercise: A Review

Description
Adenosine triphosphate (ATP) is the driving force of the human body which allows individuals to move freely. Metabolism is responsible for its creation, and research has indicated that with training, metabolism can be modified to respond more efficiently to aerobic stimulus. During an acute bout of exercise, cardiac output increases…

Adenosine triphosphate (ATP) is the driving force of the human body which allows individuals to move freely. Metabolism is responsible for its creation, and research has indicated that with training, metabolism can be modified to respond more efficiently to aerobic stimulus. During an acute bout of exercise, cardiac output increases to maintain oxygen supply to the body. Oxidative muscle fibers contract to move the body for prolonged periods of time, creating oxidative stress which is managed by the mitochondria which produce the ATP that supplies the muscle fiber, and as the body returns to its resting state, oxygen continues to be consumed in order to return to steady state. Following endurance training, changes in cardiac output, muscle fiber types, mitochondria, substrate utilization, and oxygen consumption following exercise make adaptations to make metabolism more efficient. Resting heart rate decreases and stroke volume increases. Fast twitch muscle fibers shift into more oxidative fibers, sometimes through mitochondrial biogenesis, and more fat is able to be utilized during exercise. The excess postexercise oxygen consumption following exercise bouts is reduced, and return to steady state becomes quicker. In conclusion, endurance training optimizes metabolic response during acute bouts of aerobic exercise.
ContributorsWarner, Erin (Author) / Nolan, Nicole (Thesis director) / Cataldo, Donna (Committee member) / School of Nutrition and Health Promotion (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
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Postprandial Glucose Responses to a High Glycemic Meal with Raw or Cooked Vegetables

Description
Early humans adapted to eating cooked food with increased energy density and absorption of macronutrients. However, in modern times many suffer from diseases like obesity and type 2 diabetes which can result from too much energy being absorbed from food. This study measures glucose responses to a high glycemic meal…

Early humans adapted to eating cooked food with increased energy density and absorption of macronutrients. However, in modern times many suffer from diseases like obesity and type 2 diabetes which can result from too much energy being absorbed from food. This study measures glucose responses to a high glycemic meal with a side dish of raw or cooked vegetables. There was a slight trend for raw vegetables to have decreased postprandial blood glucose responses when compared to cooked vegetables.
ContributorsWilkins, Christine Marie (Author) / Johnston, Carol (Thesis director) / Jacobs, Mark (Committee member) / Barrett, The Honors College (Contributor) / School of International Letters and Cultures (Contributor)
Created2014-05
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Effectiveness of Physical Therapy Modalities: A Quantitative and Qualitative Review

Description

Physical therapy modalities are passive tools that are used in physical therapy clinics, beside the exercise program and manual therapy, that promote blood flow, decrease inflammation, and improve range of motion and function. Electrical stimulation, ultrasound, ice, and heat were analyzed in this review. The purpose of this quantitative review…

Physical therapy modalities are passive tools that are used in physical therapy clinics, beside the exercise program and manual therapy, that promote blood flow, decrease inflammation, and improve range of motion and function. Electrical stimulation, ultrasound, ice, and heat were analyzed in this review. The purpose of this quantitative review is to use the research that has been conducted over the past 30 years to determine if physical therapy modalities are effective at decreasing inflammation, increasing range of motion and function, decreasing pain, and to draw a conclusion about whether or not they should still be used on patients today. Systematic reviews and meta analysis were analyzed and compared to qualitative surveys and patient/therapist surveys conducted in this study to determine if ultrasound, electrical stimulation, ice, and heat were effective. The results showed that both electrical stimulation and ultrasound were effective for decreasing pain, increasing functionality, and decreasing inflammation (Ashrafi, 2017; Bistolfi, 2018; Ferronato, 2017; Fuentes, 2010; Haile, 2021; Yu, 2015). However, the types of injuries, frequency, and duration of the modalities used still need to be further researched to understand how to maximize the effectiveness of these modalities. Ice therapy was significantly effective at decreasing inflammation, while heat therapy was significantly effective at decreasing pain, both in the short term (Wang et al., 2021).
ContributorsMillon, Victoria (Author) / Hollingsworth, Rachel (Thesis director) / Cataldo, Donna (Committee member) / Barrett, The Honors College (Contributor) / College of Health Solutions (Contributor)
Created2021-12