Medicine and Health Sciences Commons^™

Medical And Ethical Issues And Latter-Day Saints, Kevin J. Black

Kevin J. Black, MD

Patellofemoral Syndrome, Prystyn M. Covington

International Journal of Exercise Science: Conference Proceedings

CLINICAL PRESENTATION & EXAM: Patellofemoral syndrome is an aching pain at the front of the knee and is common in athletes. Patellofemoral syndrome occurs due to many factors such as overuse (repetitive stress on the knee), trauma to the knee, surgery, and weak muscles. Surgery to the knee using the patellar tendon as a graft to fix the anterior cruciate ligament greatly increases the risk of pain. Many factors play a role in increasing the risk of developing patellofemoral syndrome such as sports, age, and gender. Most people who develop patellofemoral syndrome tend to be adolescents or young adults. …

Fluctuations In Blood Biomarkers Of Head Trauma In Ncaa Men’S Soccer Athletes Over The Course Of A Season, Javier A. Zaragoza, Andreas Kreutzer, Jonathan Oliver, Anthony Joseph Anzalone, Tori Conger, David A. Julovich, James Hall, Sid O'Bryant, Stacie Urbina, Lemuel W. Taylor Iv

International Journal of Exercise Science: Conference Proceedings

Repetitive subconcussive impacts to the head are commonplace in soccer. The ability to detect the extent of neurological injury due to these impacts over the course of a season is paramount. PURPOSE: The purpose of the current study was to examine alterations in blood biomarkers of head injury over the course of a soccer season. METHODS: Sixteen National Collegiate Athletic Association (NCAA) male soccer athletes participated in weekly blood sampling throughout an 18-week season. Athlete statistics were received from the coaches post-season. Serum samples were stored at -80°C until analysis for Tau and Neurofilament Light polypeptide (NFL) using …

The Effect Of Personality And Motivation On Athletic Performance, Erika R. Dubros

International Journal of Exercise Science: Conference Proceedings

Motivation is key for athletes to perform at their peak performance. However, not all individuals are motivated in the same way. PURPOSE: The purpose of the current study is to determine the effect of participant’s personality traits and applied intrinsic and extrinsic motivation on the performance of a high intensity and low intensity physical task. METHODS: Fourteen participants (8 women, 6 men), with a mean (sd) age of 20.14 (0.91) yrs, completed the Ten-Item Personality Inventory to determine personality types (neuroticism, conscientiousness). Participants then performed in a random order, a high intensity physical activity (pacer test) and a low intensity …

Do Implantable, Progestin Only Contraceptives Alter The Bone Response To Unloading?, Ximena S. Vargas, Heather Cm Allaway, Sarah Little, Susan Bloomfield

International Journal of Exercise Science: Conference Proceedings

Hormonal contraception is routinely used by premenopausal women, including female astronauts, to suppress reproductive function. Long-acting reversible contraceptives (LARC-progestin only) have become a common choice amongst women due to their practicality. PURPOSE: Understand the interaction of unloading and LARC on bone health. We hypothesize that the decrease in bone mineral density (BMD) and cortical thickness of the tibia associated with hindlimb unloading (HU) will be lessened by LARC implantation. METHODS: Virgin female Sprague-Dawley rats (n=26; 4-mo-old) were singly housed and randomly assigned to placebo (PL) and LARC groups, via a slow-release etonogestrel pellet (0.00 vs. 0.09 vs. 0.17 …

The Effects Of Different Intensities Of Resistance Training On Hemodynamics, Edna Giselle Valadez Ortiz, Darian Gonzalez, Lynda Rosas, Akaela Rae Vidaña, Elisa Orozco

International Journal of Exercise Science: Conference Proceedings

PURPOSE: The purpose of this study was to analyze the effects of different resistance training intensities on blood pressure (BP) and heart rate (HR) responses. METHODS: 12 males and 12 females (19-28 age) participated in the study (5 sessions). On the first day, initial screening, anthropometric measures, cycle ergometer seat height, leg extension/leg curl machine setting, and familiarization with testing procedures were completed. On the second day, one-repetition maximum (1RM) testing was completed in 2 trials for each machine, starting with 10 min warm up on the cycle ergometer. Following general warm up, subjects performed specific warm up at 50% …

Spatiotemporal Parameters Of Gait In Active Older Adults, Suzanna Buckingham, Palma Rodriguez-Enriquez, Shana John, Roselle-Mae Robles, Marco Avalos, Brandon R. Rigby

International Journal of Exercise Science: Conference Proceedings

Spatiotemporal parameters of gait can be defined as the time and space characteristics of an individual’s pattern of walking. Gait patterns often change as a result of aging, accompanied by changes in these parameters. PURPOSE: To analyze various spatiotemporal parameters of gait in active older adults and to compare them to known parameters in healthy older adults. METHODS: Spatiotemporal parameters were collected using a timing walkway (GAITRite®, Franklin, NJ). Twenty-three recreationally active participants (9 males and 14 females), age 67.7 ± 9.1 years, who participated in at least 150 min/week of physical activity, were recruited from local outreach …

Education And Use Of The Lelli Test In The Clinical Setting, Nathalie De La Torre, Eduardo Escobar

International Journal of Exercise Science: Conference Proceedings

The knee ligament most susceptible to injury is the anterior cruciate.²˒⁵˒⁸ Detection of a ruptured ACL tear is pivotal in the course of injury care and management process.⁸ The gold reference standard for diagnosing an ACL tear has been arthroscopic evaluation.²˒⁵ However, a MRI may be used as an alternate because it is non-invasive, and it has a sensitivity and specificity of 98% and 94%.²˒⁵ Before the gold reference standard is used, a combination of physical examinations must be performed. The three physical examinations chosen by surgeons because of the exams’ highly researched validity are the Lachman test, Anterior Drawer …

The Effects Of Whole-Body Vibration And Weighted Vest On Vertical Jump Power And Flexibility, Oscar Gomez Delgado, Luis Macias, Jonathan Gonzalez, Murat Karabulut

International Journal of Exercise Science: Conference Proceedings

PURPOSE: The purpose of this study was to assess the effects of the combination of weighted vest and full body vibration platform on jump height and flexibility. METHODS: A total of 29 subjects (15 males and 14 females) completed the study. Upon completion of the paperwork, anthropometric measurements were recorded, and the subjects were familiarized with the protocol. The four randomized conditions were as follows: Combination of whole-body vibration platform and weighted vest (WBV+WV), whole-body vibration platform (WBV), weighted vest (WV), or body weight only (BW). Each experimental session was preceded by a 5-minute warmup on a cycle ergometer at …

Acute Effects Of Squat Position And Whole-Body Vibration Frequency On Muscular Function On Lower Extremities, Jonathan T. Gonzalez, Nancy Calle, Jose M. Sosa, Julissa Perez, Gualberto Garza Iv, Liana Chee, Galilea Chapa, Murat Karabulut

International Journal of Exercise Science: Conference Proceedings

PURPOSE: The purpose of this study was to examine the acute effects of whole-body vibration frequency on muscular function of lower extremities and jump performance depending on squat depth. METHODS: Thirteen male and fifteen female recreationally active subjects (ages 18-40) volunteered to participate in the study. Once all necessary paperwork was completed, anthropometric and equipment settings were recorded. Feet placement for all squats were measured to ensure consistency throughout study. Using a goniometer, the subject’s knees were positioned at 140° (high squat depth) or 90° (low squat depth) of flexion during squat exercises. Randomized testing sessions were as follows: 50 …

An In Vitro Investigation Of The Effects Of Formoterol On Thyroid Hormone-Related Gene Expression During Myogenesis, Gena D. Guerin, Ryan A. Gordon, Emily L. Zumbro, Anthony A. Duplanty

International Journal of Exercise Science: Conference Proceedings

Thyroid hormone (TH) is a primary driver of skeletal muscle (SKM) metabolism as well as myogenesis through stimulation its genetic targets. The conversion and activation of thyroid hormone (T4 to T3) is controlled by local deiodinase 2 and 3 (DIO2, DIO3) activity. This leads to expression of nuclear receptors in promotor regions of specific genes including sarco/endoplasmic reticulum calcium ATPase 1(SERCA1), which is important for homeostasis of calcium regulation during muscle contraction. PURPOSE: The purpose of the study was to examine the effects of the exercise mimetic Formoterol (FORM), a beta-adrenergic receptor agonist, on the expression of thyroid hormone-related …

The Effects Of Twelve Weeks Of Combined Resistance And Aerobic Training On Arm Lean Mass In Post-Menopausal, Obese Women, Jacob O'Connor, Andreas Kreutzer, Michael M. Levitt, Maria A. Cardenas, Carmen Cook, Emily Souder, Kaci Orr, Stephanie Huber, Gail Teagle, Kirby Thames, Elise Erickson, Emma Wichman, Melody D. Phillips

International Journal of Exercise Science: Conference Proceedings

ABSTRACT

Sarcopenia, a loss in muscle mass as a result of aging, is an independent risk factor for disability and is significantly associated with self-reported physical disability in both men and women. Strength training reverses the loss of, or maintains muscle mass in individuals as they age. PURPOSE: To examine the potential change in lean muscle mass of the arms in response to a 12-week combination strength and aerobic exercise training intervention in post-menopausal (55-75 years), obese women. METHODS: Forty-one women were randomly assigned to either an exercise (EX, n=22 ) or education (ED, n=19) group. For twelve …

The Neuromuscular And Muscle Damage Responses To The Farmers Walk: A Pilot Study, Jeb F. Struder, Arriana M. Mcdonald, Jordan B. Wainwright, Joseph B. Eberhardt, Zeina Nader, Noe Deanda, Souhad Z. Bachnack, Cody Haenitsch, Stephen Cumberledge, Daniel E. Newmire, Mikaela D. Boham, Heather E. Webb

International Journal of Exercise Science: Conference Proceedings

The Farmer’s Walk (FW) has been suggested as a useful supplement to resistance training due to its premise as a functional training tool. Minimal information is available concerning biochemical and neuromuscular responses associated with performing the FW. Current literature regarding risks of muscle damage associated with the FW are limited impacting possible use in exercise prescription and application. PURPOSE: The purpose of the study was to investigate the neuromuscular and biochemical responses to the FW when compared to an individual’s unloaded walking pattern (Non-weighted condition; NWC). METHODS: Fifteen participants (Mean ± SEM; age: 21.6 ± 0.5yo; ht: 172.5 …

The Effect Of Preparatory Motion And Visual Vs. Audio Cues On Response Time, Katherine Bricarell, Scott P. Mclean

International Journal of Exercise Science: Conference Proceedings

In many sports, athletes must perceive and interpret information quickly and effectively to provide sufficient time to plan and execute subsequent movements (Filipic et al., 2009). Preparatory movements in discrete motor skills may improve such performance by enhancing processes such as the stretch-shortening response (Bernardi et al., 1998). For example, in a tennis service return, athletes have incorporated a preparatory small vertical jump (referred to as a “split step”) to reduce reaction time (Filipic et al., 2017). Such preparatory movements are now being used by baseball and softball position players in an attempt to improve their fielding response. Supporting evidence …

Exercise Cerebral Blood Flow Hemodynamics Differ In Hot Dry And Humid Conditions, Julianna J. Kilpatrick, Paolo Miguel Salvador, Kyleigh Allie, Eric Rivas

International Journal of Exercise Science: Conference Proceedings

Passive and exercise-heat stress have been reported to cause reductions in cerebral blood flow (CBF); however, it is unknown if CBF velocity is different under hot dry and humid conditions. PURPOSE: This project tested the hypothesis that upright rest and exercise-heat stress in hot dry and humid conditions result in similar CBF reductions. METHODS: Seven healthy active (7 day activity: 9887±3564 steps/day; VO₂max: 52±10 mL/kg/min) subjects (5M/2F, 24±9y, 171±6cm, 68±7kg) completed a 30 min baseline rest followed by 60 min of exercise at a rate of perceived exertion (RPE) of 12 (between light and somewhat hard) on a …

Pacing Strategies In The 200 Yard Freestyle By Collegiate Men, Peter Robinson, Scott P. Mclean

International Journal of Exercise Science: Conference Proceedings

ABSTRACT

Examination of components of a 200 yd freestyle race may provide useful information for understanding how pacing strategy contributes to successful performance. PURPOSE: To compare 50-yd splits of a 200-yd freestyle race in higher performing and lower performing swimmers to assess if pacing strategy differs between groups. METHODS: An ex post facto design was used employed to create a dataset of 200 yd freestyle results. Split times were generated for each 50 yard segment of a 200 yd race for two performance groups of swimmers; the first and last four finalists in eight conference championships each for NCAA Division …

A Clinical Teaching Of Hamstring Strains, Josey Meyer, Chuck Ruot, Lindsay Edwards

International Journal of Exercise Science: Conference Proceedings

CLINICAL PRESENTATION & EXAM: A patient with a hamstring strain will have pain and tenderness on his or her posterior thigh. The patient may also complain of difficulty extending the knee and sitting comfortably. Depending on the severity of the injury, there could be bruising and swelling in the thigh area causing a loss of hamstring strength. If one of the hamstring muscles is completely torn; the patient would feel a “popping” sensation upon injury. Thus, the patient would be unable to use the injured leg. A hamstring strain typically comes from muscle overload during an eccentric contraction. A …

Salivary Cortisol And Testosterone Responses To A Farmer’S Walk, Arriana M. Mcdonald, Jeb F. Struder, Heather E. Webb

International Journal of Exercise Science: Conference Proceedings

It is quite common that numerous populations must often carry large amounts of weight while moving (military, law enforcement, firefighters, farmers, and laborers) and/or benefit from the physiological stresses imposed on the body during competition. An exercise, such as the Farmer’s Walk (FW), may provide beneficial results for these individuals by supplementing the demands encountered during the completion of these tasks within a training environment. Limited information is available concerning the hormonal responses associated with performing the FW and the amount of physiological stress that may occur as a result of repeated efforts has not been investigated. PURPOSE: The …

Compliance With Intensity-Focused Prescription Of Physical Activity Using Real-Time Cadence, Wei Sun, Heontae Kim, Mary Malaska, Bridget Miller, Ho Han

International Journal of Exercise Science: Conference Proceedings

The utility of wearable activity monitors can provide a better guide to increase adherence to the recommended physical activity levels for health improvement. However, the extent of participants’ ability to comply with the physical activity prescription using a newly developed, intensity-focused value, real-time cadence, remains unclear. PURPOSE: To examine the participants’ ability to comply with a given physical activity prescription focusing on intensity (i.e., real-time cadence). METHODS: Thirty-six healthy adult individuals (age 18-65 yrs; 18 female) participated in the study. During a 2-min over-ground walking trial, participants were prescribed to walk at any cadences (steps/min; an indicative of …

Validation Of Wearable Activity Monitors For Real-Time Cadence, Heontae Kim, Wei Sun, Mary Malaska, Bridget Miller, Ho Han

International Journal of Exercise Science: Conference Proceedings

The recent advent of wearable activity monitors to provide physical activity intensity in real time (e.g., real-time cadence), enables researchers and practitioners to measure and prescribe physical activity targeting specific intensity in real time. The validity of real-time estimates from the devices, however, remains unclear. PURPOSE: To evaluate the validity of wearable activity monitors providing the values of real-time cadence against a criterion measure (i.e., hand-tally count). METHODS: Thirty-six healthy adult individuals (age 18-65 years) participated in the study. Participants wore Garmin Forerunner 235 (GM) and Polar M430 (PL) on their wrist of the non-dominant arm while placing …

The Acute Effects Of Different Squat Intensities On Vertical Jump Performance, Andrew R. Hill, Daniel L. Laudermilk, Soon-Mi Choi

International Journal of Exercise Science: Conference Proceedings

Post activation potentiation (PAP) is defined as a short-term improvement in performance as a result of using a resistance exercise. The phenomenon of PAP has been shown to acutely increase athletic performance with back squats as an effective modality. PURPOSE: This study investigated acute effects of different back squat intensities on the countermovement vertical jump (CMJ). METHODS: Participants were 13 to 18-yr-old healthy male (n=8) and female (n=3) who participated in regular resistance training for at least 6 months and have played in a University Interscholastic League (UIL) within the past 6 months. One Repetition Maximum (1-RM) was measured within …

Investigating The Use Of Vibration Platform And Blood Flow Restriction As A Warm-Up Procedure, Ricardo Parra, Jovanna Bonilla, Elda Padilla, Laura Rodriguez, Naomi Cardenas, Murat Karabulut

International Journal of Exercise Science: Conference Proceedings

Blood Flow Restriction (BFR) training is a novel form of exercise that is emerging as an alternative to traditional resistance training. The research on BFR training as a warm up is limited. PURPOSE: The purpose of this study was to observe the combined effect of a whole body vibration (WBV) warm up and Blood Flow Restriction (BFR) on muscle temperature, flexibility, vertical jump height, and estimated VO2max. METHODS: Nineteen subjects (8 males and 11 females; Mean ± STDEV age = 24.21± 3.47 years; height = 166.94± 8.82 cm) completed the study, which involved performing a warm-up protocol under …