Sports Sciences Commons^™

Return-To-Play Clinical Milestones: Fail-Rate For Those Claiming To Be Fully Symptom Free, Addie Jane Heithecker, Madison Fenner, Kristen G. Quigley, Monique Passalacqua, Philip Pavilionis, Nora Constantino Facsm, Nicholas G. Murray

International Journal of Exercise Science: Conference Proceedings

Sport-related concussion remains a concerning public health issue. A multifaceted test battery is recommended for clinical judgments, including return-to-play (RTP). Initiation of RTP testing is based on the athletes' honesty with their current symptoms and is confirmed by the multifaceted test battery. PURPOSE: Examine the rates of test failure in NCAA Division I athletes when they present as being symptom free for 24 hours. METHODS: 36 Division I athletes (18 male, 18 female; avg. age=20.1 years) were evaluated at pre-season baselines (BL), within 48 hours of a diagnosed concussion (CON), and when they reported being symptom free (SF) …

Validity Of Ultrasound Imaging Of Abductor Hallucis Volume Demonstrated By Strong Agreement With Mri, Emma Robinson, Jacob Willes, Derek Swanson, Dallin Swanson, Joshua Sponbeck, Wayne Johnson

International Journal of Exercise Science: Conference Proceedings

Intrinsic foot muscles such as abductor hallucis (ABDH) are crucial for function and mobility while influencing quality of life. Thus, being able to accurately measure foot muscle volume is important. While magnetic resonance imaging (MRI) is often considered to be the reference standard of medical imaging, ultrasound (US) provides a cost effective, rapid and dynamic way of assessing muscle size and function. PURPOSE: To investigate the validity and intratester reliability of US imaging in assessing ABDH volume compared to MRI. METHODS: US and MRI were employed to measure the right and left ABDH muscle volume involving 9 participants (females = …

Reporting On Pilot Experiences In A Multi-Phased Fidelity Study Of An Equipment-Based Resistance Program For Older Adults, Rodolfo Mejia, Nasim Eyvazlou, Cody Antonio, Marlene Villa, Alexandra Auslander, Zakkoyya H. Lewis, Lara Killick

International Journal of Exercise Science: Conference Proceedings

Within the US, people are experiencing longer life expectancy, yet these extended lifespans have not necessarily translated into years living in good health. Research shows that regular resistance exercise carries distinct preventive health benefits for older adults. A growing body of literature explores interventions designed to engage older adults in resistance exercise. PURPOSE: The purpose of this study was to pilot the proposed assessment strategy for a multi-phased fidelity study of an equipment-based resistance training program designed specifically for older adults. METHODS: A three-phased study has been designed. Phase 1 consisted of a systematic literature review to identify salient measures …

The Effects Of Heavy Backpack Carriage On Hand Strength, Malea N. Lopez, Jennifer L. Hein, Katherine Saul, Deanna J. Schmidt

International Journal of Exercise Science: Conference Proceedings

Force production in upper limb muscles could be affected following exercise that involves carrying a heavy backpack load. In lower limb muscles, previous study has demonstrated that there is muscle force depression after several different regimens of metabolically and mechanically demanding exercise. PURPOSE: The aim of this study is to examine pinch strength after exercising while carrying a heavy backpack with straps that compress the nerves and blood vessels of the upper limb. We hypothesized that backpack load carriage at 15% body weight and 30% body weight will lead to changes in upper limb lateral pinch strength as compared …

Improvements In Mood State Following An 8-Week Strength Training Intervention In Healthy Adult Subjects, Emily Dow, Carol S. Johnston, Mario Hernandez

International Journal of Exercise Science: Conference Proceedings

Recently, a growing body of literature has identified the potential role of exercise in modulating the microbiome-gut-brain axis, by which changes in the gut microbiome have been associated with improved markers of psychological health. PURPOSE: To introduce the potential role of strength training, an underrepresented exercise modality in this field, as a modifiable lifestyle factor that may improve mental health outcomes via the microbiome-gut-brain axis. METHODS: This randomized controlled trial implicates an 8-week, remotely monitored strength training intervention consisting of three total-body exercise sessions per week in healthy adults. The intervention arm (ST; n=11; 91% female; 38.5±10.3 y) received …

The Inflammatory Response To Different Hiit Modalities, John G. Wallace Iii, Jared Moore, E. Todd Schroeder

International Journal of Exercise Science: Conference Proceedings

Pro-inflammatory and anti-inflammatory cytokines have been documented to change in response to long-duration, aerobic exercise. Little work has been performed in high-intensity interval training (HIIT). Furthermore, it has yet to be elucidated whether the modality of HIIT affects this inflammatory response. PURPOSE: The purpose of this study was to investigate the changes in IL-8 and IL-10 cytokine concentrations pre-post and post-1hr following HIIT protocols using two different exercise modalities, treadmill running (TM) and stationary cycling (CE). METHODS: Eight young, healthy, recreationally active volunteers (1 female, 7 males; 25.50 ± 3.25 years) completed a 4x4 HIIT protocol (4-minute 85-95% …

Advancing Accessibility Research In Kinesiology: A Mixed-Methods Case Study Of One Survey Website, Yi Sheng Wu, Jafra D. Thomas, Jasmine C. Wong

International Journal of Exercise Science: Conference Proceedings

While some studies in kinesiology have investigated the accessibility of educational material and electronic applications used to promote physical activity (eg, ease to perceive/navigate content resources), few studies report on the accessibility of survey tools before their use in research. PURPOSE: The purpose of this study was to measure the accessibility of one survey website to a study directly investigating comprehension of mock physical activity promotion material created by Thomas et al. (2023). METHODS: The website was for study participants to complete an online version of a cloze form (for a visual, see Nielsen, 2011; eg, see Cardinal …

Neck Flexors Bilateral Symmetry In Baseball Pitchers: A Unilateral Perspective, Ceren Acik, Stefan Keslacy, Christine Dy, Leila Rahnama

International Journal of Exercise Science: Conference Proceedings

This study examines the potential asymmetry in flexor neck muscle characteristics, including thickness, size, strength, and neck flexion range of motion (ROM), in baseball players. Baseball involves repetitive unilateral actions, which may subject players to one-sided stress and strain due to the sport's explosive and high-speed movements. Specifically, pitchers and catchers, who perform frequent arm activities, are at higher risk of upper extremity injuries. PURPOSE: The study aimed to investigate if repeated throwing movements in baseball induce trophic changes in the neck muscles, particularly on the dominant side used for throwing. METHODS: Thirteen college baseball players and fifteen healthy controls …

Biomechanical Analysis Of Change Of Direction Movements In Women's Collegiate Soccer Players, Malia Yim, Allie Lam, Travis Peterson

International Journal of Exercise Science: Conference Proceedings

Change of Direction (COD) tasks are common in a variety of high performance sports. PURPOSE: This study aims to determine technique and kinetic differences between unexpected defensive COD tasks in women’s collegiate soccer players. METHODS: Eleven collegiate soccer players participated voluntarily in accordance with the local IRB, performing six 180°R and L , 135° L, and 225°R tasks, approaching from 5m and exiting 3m. Force (Kistler, 1200Hz) and timing information (Brower) data was collected. Repeated Measures ANOVA determined differences across the group between movement directions. RESULTS: Four categories of techniques emerged: natural step, shuffle, hop, and stomp. 135L COD tasks …

Predictors Of Performance During A 161 Km Mountain Footrace, Omar B. El-Kurd, Patrick Bialy, Soolim Jeong, Braxton A. Linder, Nina L. Stute, Joseph D. Vondrasek, C. M. Lee Facsm, Kent A. Lorenz, Austin T. Robinson, Joseph C. Watso, Matthew C. Babcock, James R. Bagley, Gregory J. Grosicki

International Journal of Exercise Science: Conference Proceedings

Training volume and cardiovascular dynamics influence endurance performance. However, there is limited information on the interplay between training volume, cardiovascular dynamics, and performance in ultra-marathon athletes. PURPOSE: We aimed to determine predictors of performance in finishers of the 2023 Western States Endurance Run (WSER). METHODS: Sixty participants who finished the race (49 males/11 females; mean age: 44.7 ± 9.6 y, range: 26–66 y; BMI: 22.7 ± 2.2 kg/m²) completed pre-race surveys including average training volume (AV) and peak training volume (PV), as well as resting cardiovascular measures including resting heart rate (RHR) and augmentation index (AIx), a measure …

No Difference Found In Hamstring Strength Across Division I Football Positions, Hunter Jack, Kaden Kennard, Spencer Jezek, Joshua Sponbeck, Malorie Wilwand, A. Wayne Johnson

International Journal of Exercise Science: Conference Proceedings

Hamstring injuries are one of the most common injuries sustained in professional football with 800+ hamstring injuries per year. These hamstring injuries often occur between late swing (eccentric contraction) and early ground contact. PURPOSE: To investigate the correlation of eccentric hamstring strength to muscle volume across positional groups. METHODS: Athletes were divided into three homogeneous groups based on position (big (e.g., linemen), skill (e.g., receivers), combo (e.g., linebackers)). Seventy-three NCAA Division I football players participated (24 big, 37 skill, and 12 combo). Hamstring strength was collected for each leg while performing 3 Nordic curls on a Nordbord device. The peak …

Food And Mood: Investigating The Correlation Between Vitamin B12 Intake And Depression, Jana Soucar, Hawley Almstedt

International Journal of Exercise Science: Conference Proceedings

Vitamin B12 is an essential nutrient that metabolizes homocysteine, which is a potentially neurotoxic molecule when in excess. Studies show that a deficiency in vitamin B12, as well as folate, may be associated with mental health conditions. Additionally, the prevalence of depression is higher in college students than other demographic populations. PURPOSE: The purpose of this study was to investigate a correlation between vitamin B12 and folate intake with signs and symptoms of depression in college students. METHODS: This study was conducted by first providing participants with the Beck Depression Inventory (BDI) to measure signs and symptoms of …

Impacts Of Creatine Supplementation On Body Weight And Running Anaerobic Sprint Performance Test (Rast) Time Performance In Youth Soccer Players, Citlaly Jauregui, Heitor Pn Amorim, Suellen B. Sant'ana, Juan Mielgo Ayuso, Dailson Paulucio, Steven B. Machek, Marco Machado

International Journal of Exercise Science: Conference Proceedings

Creatine supplementation commonly increases intracellular water and/or lean mass-associated weight gain and concomitantly improved short-term, high-intensity effort performance such as repeated sprint ability. Research in this regard is both generally sparse but specifically more so in younger soccer athletes. PURPOSE: to determine the effect of 28 days of creatine monohydrate supplementation on body weight and running anaerobic sprint performance (RAST) time in youth soccer players. METHODS: Sixteen male youth soccer players were randomized in double-blinded fashion to either 28 days of creatine supplementation (CRE; 15.9±0.35y) or an equivalently-dosed dextrose (PLA; 15.5±0.54y; 0.3g/kg/d for the first 7 days, followed by 0.03g/kg/d …

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 …

Individuals Wearing Cleats Transitioning From Sitting To Standing Demonstrate A Significant Decrease In Blood Flow To The Foot, Mel Harsh, Chase Tomlinson, Adam Mortensen, Kassity D. Clay, Adam Ranck, Camile Nguyen, Pat R. Vehrs Facsm, Aaron W. Johnson

International Journal of Exercise Science: Conference Proceedings

Plantar fasciopathy is a common foot condition with 10% prevalence in the general population. Plantar fasciosis (a type of fasciopathy) is considered a degenerative condition associated with cell death due to a lack of blood flow. Narrow, tight footwear, such as cleats, have been implicated as a potential contributing factors for the development of plantar fasciopathy and their direct influence on blood flow to the foot is currently unknown. PURPOSE: To investigate blood flow change in the anterior and posterior tibial arteries between sitting and standing in a cleated foot. METHODS: Eight individuals participated in this pilot study (weight=70.5 kg±12.9, …

Identifying Maximal Fat Oxidation During Arm Ergometry, Carly Schuerger, Zachary Jordan, Cristian Gonzales, Todd A. Astorino Facsm

International Journal of Exercise Science: Conference Proceedings

Metabolic responses have been extensively studied in response to various exercise modalities, such as treadmill running and cycling. Achten et al. (2002) demonstrated that graded exercise testing in trained cyclists using 3 minute (min) stages led to similar estimates of fat oxidation (FOx) and maximal fat oxidation (MFO) as 5 min stages. However, minimal research has studied FOx responses during exercises using arm cycle ergometry (ACE). PURPOSE: To compare FOx responses during progressive ACE using 3 and 5 min stages. METHODS: Participants consisted of 11 healthy, non-obese men and women (age = 24±9 yr, %BF

= 23±5%, VO2peak …

Comparative Investigation Of Foot Blood Flow Dynamics: A Study Of The Anterior And Posterior Tibial Arteries In The Sitting Vs. Standing Positions, Chase Tomlinson, Mel Harsh, Camile Nguyen, Lee J Hinkle, Kalissa Cox, Pat R. Vehrs Facsm, Aaron W. Johnson

International Journal of Exercise Science: Conference Proceedings

Optimal blood circulation is crucial to perform activities of daily living and for living a healthy life. For example, insufficient blood flow to the foot contributes to the development of foot pathology such as plantar fasciopathy. An unshod simulation of tight and narrow shoes showed decrease blood flow to the foot. PURPOSE: This study investigated if there was a significant decrease in blood flow to the foot via the anterior and posterior tibial arteries when an unshod person transitions from sitting to standing. METHODS: Nine individuals participated in this pilot study (age=24.7±4.4, weight=72.7kg±8.8, height=1.8m±0.07). For the sitting position, …

Hemodynamic And Metabolic Responses To Moderate And Vigorous Cycle Ergometry In Men With Transtibial Amputation, Kionte Storey, Adam Geschwindt, Todd Astorino Ph.D

International Journal of Exercise Science: Conference Proceedings

Adults with amputation face barriers to an active lifestyle which attenuates cardiorespiratory fitness. Prior studies in amputees typically involve treadmill walking or arm ergometry, yet physiological responses to leg cycling are less understood. PURPOSE: To assess hemodynamic and metabolic responses to moderate and vigorous cycle ergometry in men with transtibial amputation (TTA), with broader application towards exercise programming. METHODS: Using a randomized within-subjects crossover design, five men with unilateral TTA (age = 39 ± 15 yr) and six able-bodied controls (CON) (age = 31 ± 11 yr) performed two 20 min bouts of cycling differing in intensity.Cardiac output (CO), …

Influence Of Acute Turkesterone Dosing On Serum Insulin-Like Growth Factor 1 (Igf-1) And Subjective Digestibility Scores In Recreationally-Active Males, Stephanie E. Scagliotti, Dillon Harris, Steven B. Machek, Nicolle Leon, Jeff S. Forsse, Leslee Funderburk, Tracey Sulak

International Journal of Exercise Science: Conference Proceedings

Turkesterone is a relatively novel phytoecdysteroid compound that has become increasingly popular amongst recreationally active demographics. Despite prior in vitro data suggesting that this compound may support enhanced body composition via both insulin-like growth factor 1 (IGF-1)-mediated protein synthesis, no human evidence exists in this regard nor how well its digestibility is tolerated. PURPOSE: To determine the effect of multiple turkesterone doses on serum IGF-1 and to report any gastrointestinal (GI) distress symptoms in a healthy human sample. METHODS: Eleven recreationally active males (23.3±2.2y) visited the laboratory on three occasions separated by at least seven days and were randomized in …

Effects Of Gelatin Supplementation On Skeletal Muscle Recovery Following Eccentric Exercise, Rebecca R. Graham, Ana P. Carrasco, Brian E. Salgado, Andrew C. D'Lugos

International Journal of Exercise Science: Conference Proceedings

Exercise is a potent stimulus for skeletal muscle health. Strenuous exercise can result in exercise-induced muscle damage, characterized by soreness, inflammation, and impaired muscle function. Collagen supplementation has garnered attention as a means to improve muscle recovery and musculoskeletal health. Gelatin is a cost-effective and commercially available form of collagen supplementation. The impact of collagen supplementation, via gelatin, on muscle recovery following strenuous exercise is unknown. PURPOSE: To test the efficacy of collagen supplementation, via gelatin, on indices of skeletal muscle recovery following eccentric exercise. METHODS: Healthy, recreationally-active adults (28.4 ± 4.7 yrs; 5 M, 6 F; BMI: …