Sports Sciences Commons^™

Examining Eating Attitudes And Behaviors In Collegiate Athletes, The Association Between Orthorexia Nervosa And Eating Disorders, Nancy A. Uriegas, Zachary K. Winkelmann, Kelly Pritchett, Toni M. Torres-Mcgehee

All Faculty Scholarship for the College of Education and Professional Studies

Purpose: Orthorexia nervosa (Orthorexia) is an eating attitude and behavior associated with a fixation on healthy eating, while eating disorders (EDs) are clinically diagnosed psychiatric disorders associated with marked disturbances in eating that may cause impairment to psychosocial and physical health. The purpose of this study was to examine risk for Orthorexia and EDs in student-athletes across sex and sport type and determine the association between the two.

Methods: Student-athletes (n = 1,090; age: 19.6 ± 1.4 years; females = 756; males = 334) completed a survey including demographics, the ORTO-15 test (values), the Eating Attitudes Test-26 (EAT-26; >20 …

Impact Of Nutrition-Based Interventions On Athletic Performance During Menstrual Cycle Phases: A Review, Macy M. Helm, Graham R. Mcginnis, Arpita Basu

Kinesiology and Nutrition Sciences Faculty Publications

Despite the steady increase in female participation in sport over the last two decades, comprehensive research on interventions attenuating the influence of female menstrual physiology on performance remains scarce. Studies involving eumenorrheic women often only test in one menstrual phase to limit sex hormone variance, which may restrict the application of these findings to the rest of the menstrual cycle. The impacts of nutrition-based interventions on athletic performance throughout the menstrual cycle have not been fully elucidated. We addressed this gap by conducting a focused critical review of clinical studies that reported athletic outcomes as well as menstrual status for …

Post-Exercise Sweat Loss Estimation Accuracy Of Athletes And Physically Active Adults: A Review, Eric O'Neal, Tara Boy, Brett Davis, Kelly Pritchett, Robert Pritchett, Svetlana Nepocatych, Katherine Black

All Faculty Scholarship for the College of Education and Professional Studies

The main purposes of this review were to provide a qualitative description of nine investigations in which sweat losses were estimated by participants following exercise and to perform a quantitative analysis of the collective data. Unique estimations (n = 297) were made by 127 men and 116 women after a variety of exercise modalities in moderate to hot environmental conditions. Actual sweat loss exceeded estimated sweat loss (p < 0.001) for women (1.072 ± 0.473 vs. 0.481 ± 0.372 L), men (1.778 ± 0.907 vs. 0.908 ± 0.666 L) and when all data were combined (1.428 ± 0.806 vs. 0.697 ± 0.581 L), respectively. However, estimation accuracy did not differ between women (55.2 ± 51.5%) and men (62.4 ± 54.5%). Underestimation of 50% or more of sweat losses were exhibited in 168 (54%) of estimation scenarios with heavier sweaters displaying a higher prevalence and trend of greater underestimations in general. Most modern guidelines for fluid intake during and between training bouts are based on approximate sweat loss estimation knowledge. These guidelines will likely have minimal efficacy if greater awareness of how to determine sweat losses and accurate recognition of sweat losses is not increased by coaches and athletes.

Association Between Energy Balance And Metabolic Hormone Suppression During Ultra-Endurance Exercise, Bjoern Geesmann, Jenna C. Gibbs, Joachim Mester, Karsten Koehler

Department of Nutrition and Health Sciences: Faculty Publications

Ultra-endurance athletes often accumulate an energy deficit when engaging in ultra-endurance exercise, and upon completion of the exercise, they exhibit endocrine changes that are reminiscent of starvation. However, it remains unclear whether these endocrine changes are a result of the exercise per se or secondary to the energy deficit, and more importantly, whether these changes can be attenuated by increased dietary intake. Our goal was to assess the relationship between changes in key metabolic hormones following ultra-endurance exercise and measures of energy balance. Metabolic hormones as well as energy intake and expenditure were assessed in 14 well-trained male cyclists who …

Hydration Status, Habits, And Knowledge Of Collegiate Cross Country Runners, Laura J. Comee

Celebrating Scholarship & Creativity Day (2011-2017)

Abstract: Dehydration exceeding 2% loss of body mass can cause decreased cognitive and physical performance in endurance athletes. While many runners carry water bottles with them, most do not know their sweat rate or fluid recommendations, increasing the risk for heat-related illnesses such as heat stroke. Purpose: To assess hydration status, habits, and knowledge of collegiate cross country runners. Methods: Institutional Review Board approval was obtained and subjects completed informed consents. Thirty-three female and twenty-five male Division III collegiate runners participated in the study. Hydration status was assessed measuring the specific gravity of three urine samples one each …

Current And Past Menstrual Status Is An Important Determinant Of Femoral Neck Geometry In Exercising Women, Rebecca J. Mallinson, Nancy I. Williams, Jenna C. Gibbs, Karsten Koehler, Heather C.M. Allaway, Emily Southmayd, M. J. De Souza

Department of Nutrition and Health Sciences: Faculty Publications

Menstrual status, both past and current, has been established as an important determinant of bone mineral density (BMD) in young exercising women. However, little is known regarding the association between the cumulative effect of menstrual status and indices of bone health beyond BMD, such as bone geometry and estimated bone strength.

Purpose: This study explores the association between cumulative menstrual status and indices of bone health assessed using dualenergy x-ray absorptiometry (DXA), including femoral neck geometry and strength and areal BMD (aBMD), in exercising women.

Methods: 101 exercising women (22.0 ± 0.4 years, BMI 21.0 ± 0.2 kg/m2, 520±40 min/week …

The Effects Of Lean Beef Supplementation On The Iron Status Of College Athletes, Jocelyn Johnson, Danielle Burke, Matthew Vukovich, Kendra Kattelmann

Health and Nutritional Sciences Faculty Publications

The purpose of this study was to determine whether weekly supplementation with nine ounces of prepackaged lean beef sticks could maintain the iron status of college endurance athletes. Thirty-four college endurance athletes (20 female, 14 male) were stratified by sex, baseline serum ferritin concentration, and use of iron supplements, and randomized into an intervention (n = 18) or control (n = 16) group. The participants in the intervention group supplemented their usual diet with nine ounces of prepackaged lean beef sticks per week and a daily multivitamin/mineral supplement containing 18 mg iron. The participants in the control group consumed their …

The Effects Of Branched-Chain Amino Acid Supplementation On Indirect Indicators Of Muscle Damage And Performance, Beau K. Greer

All PTHMS Faculty Publications

The purpose of this study was to determine whether branched-chain amino acid (BCAA) supplementation attenuates indirect indicators of muscle damage, lowers ratings of perceived exertion, and improves aerobic performance as compared to an isocaloric, carbohydrate (CHO) beverage or a non-caloric placebo beverage. Nine, untrained males (VO2 max 36.26 2.23 ml/kg/min) performed three 90-minute cycling bouts at 55% VO2 max followed by a 15-minute time trial. Metabolic data was collected every 15 minutes during the steady-state ride, and indirect muscle damage markers were assessed pre, post, 4-hours, 24-hours, and 48-hours post-exercise. Pre and post-exercise concentrations of the BCAA and glucose were …