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Kinesiology

James Madison University

2013

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Association Of Habitual Snoring With Carotid Intima-Media Thickness In Young Men, Sarah C. Jacoby May 2013

Association Of Habitual Snoring With Carotid Intima-Media Thickness In Young Men, Sarah C. Jacoby

Masters Theses, 2010-2019

Purpose: The primary aims of this study are to: 1) compare carotid intima media thickness (CIMT) of young males who are habitual snorers compared to those who do not snore; 2) to compare CIMT between snorers and non-snorers to the intima media thickness (IMT) of the brachial artery, the control, that is not exposed to the vibrations from snoring; and 3) to determine the risk for developing obstructive sleep apnea (OSA) in snorers compared to non-snorers through the use of validated questionnaires. Methods: Subjects were classified as snorers (n=17) or non-snorers (n=6) according to the prescreening questionnaire. Height, weight, neck …

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The Ergogenic Effects Of Glucose And Fructose Coingestion During Prolonged Cycling, Daniel A. Baur May 2013

The Ergogenic Effects Of Glucose And Fructose Coingestion During Prolonged Cycling, Daniel A. Baur

Masters Theses, 2010-2019

The purpose of this investigation was to examine the effects of glucose and fructose coingestion on cycling time trial performance and physiological responses to exercise. Eight trained male cyclists (age: 25 ± 6.2 yrs, height: 180.2 ± 4.3 cm, weight: 76.9 ± 9.2 kg, and VO2max: 61.9 ± 6.2 mL∙kg-1∙min-1) completed the study. Subjects ingested either an artificially-sweetened placebo (PL), a moderate-glucose beverage (MG: 1.0 g•min-1), a high-glucose beverage (HG: 1.5 g•min-1), or a glucose and fructose beverage (GF: 1.5 g•min-1; 2:1 ratio) during ~3 hrs of exercise; consisting of 2 hours of constant load cycling (55% Wmax, 195 ± …

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Cycling Time Trial Performance Is Not Enhanced By Either Whey Protein Or L-Alanine Intake During Prolonged Exercise, Adam B. Schroer May 2013

Cycling Time Trial Performance Is Not Enhanced By Either Whey Protein Or L-Alanine Intake During Prolonged Exercise, Adam B. Schroer

Masters Theses, 2010-2019

Previous studies have reported that adding protein (PRO) to a carbohydrate (CHO) solution can enhance endurance performance. This ergogenic effect may be a function of additional calories from supplemental protein/amino acids, but this thesis has not been directly examined. Additionally, L-alanine (ALA) is readily oxidized when provided during exercise; the impact that this has on metabolism and prolonged endurance performance is unknown. The purpose of this investigation was to assess performance and various cardiovascular and metabolic outcomes during prolonged cycling, to independently gauge the efficacy of whey PRO hydrolysate and ALA supplementation. Eight trained male and female cyclists (age: 22.3±2.0 …

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Effects Of Carbohydrate + Protein Co-Ingestion During And Following Exercise On Cardiovascular Adaptations And Exercise Tolerance During Intensified Cycle Training, Justin Faller May 2013

Effects Of Carbohydrate + Protein Co-Ingestion During And Following Exercise On Cardiovascular Adaptations And Exercise Tolerance During Intensified Cycle Training, Justin Faller

Masters Theses, 2010-2019

Introduction: This study investigated the effects of carbohydrate and protein (CHO+Pro) supplementation during intensified training on cardiovascular adaptations and cycling performance. Methods: Five cyclists (VO2peak = 62.6 ± 10.7 ml/kg/min) performed two 27-day training protocols while receiving either CHO or CHO+Pro supplements. The exercise protocols consisted of 7 days of normal training (NT), 10 days of intensified cycle training (ICT; 100% increase in average training duration versus NT), and 10 days of reduced volume training (RVT; reduction in training duration to 60% of NT). Performance was assessed by a 30-km time trial following 120 min of constant-load cycling and VO2peak …

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Arterial Adaptations To Training Among First Time Marathoners, Nicole Hafner May 2013

Arterial Adaptations To Training Among First Time Marathoners, Nicole Hafner

Masters Theses, 2010-2019

Increased arterial wall thickness has been positively related to cardiovascular disease. Exercise has been found to favorably alter arterial anatomy in the trained limbs, but its effects on untrained limbs and the carotid artery are unclear. Thus, brachial (non-trained limb), popliteal (trained limb) and carotid, wall thickness (WT), wall to lumen diameter ratios (W:L), intima-media thickness (IMT) and lumen diameters (LD) were compared between recreationally active (n=14) and untrained (n=11) subjects before and after, the active subjects participated in 12 weeks of marathon run training. Arterial dimensions were measured with B-mode ultrasonography. Pre and post-training VO2max and running speed at …

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The Implications Of Undiagnosed Obstructive Sleep Apnea On Resting Hemodynamic Variables In Cardiac Rehabilitation Patients, Brooke Marie Shafer May 2013

The Implications Of Undiagnosed Obstructive Sleep Apnea On Resting Hemodynamic Variables In Cardiac Rehabilitation Patients, Brooke Marie Shafer

Masters Theses, 2010-2019

The primary objective of this study was to examine the effects of obstructive sleep apnea (OSA) on resting hemodynamic variables pre- and post-cardiac rehabilitation (CR). Subjects were screened for OSA using an at-home screening device. Subjects were then divided into two design groups: subjects with likely OSA (OSA) and subjects without OSA (non-OSA). All patients had resting hemodynamic measurements recorded and performed a 6-minute walk test. Resting hemodynamics and 6-minute walk test were performed pre- and post-CR. The study was conducted at Rockingham Memorial Hospital in Harrisonburg, VA and Carilion Roanoke Community Hospital in Roanoke, VA where subjects completed standard …

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