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James Madison University

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Articles 91 - 106 of 106

Full-Text Articles in Kinesiology

Effect Of Diet Induced Weight Loss And Exercise On Hscreactive Protein In Sedentary Postmenopausal Women, Jennifer Donnelly May 2011

Effect Of Diet Induced Weight Loss And Exercise On Hscreactive Protein In Sedentary Postmenopausal Women, Jennifer Donnelly

Masters Theses, 2010-2019

Cardiovascular disease (CVD) risk factors, such as increased body fat, dyslipidemia, and high sensitivity C-reactive protein (CRP) levels are intensified in postmenopausal women. CRP has been reported as an independent indicator of risk for cardiovascular events. CRP is affected by multiple factors such as age, race, body mass index (BMI), and physical activity level. The purpose of this study was to compare the effects of an exercise intervention on traditional (BMI, percent body fat, waist circumference, physical activity level) and non-traditional (CRP) risk factors for cardiovascular disease to a dietary intervention program in sedentary, postmenopausal women. Twenty apparently healthy postmenopausal …


The Relationship Between Physical Activity Recommendations And Diabetes Risk Factors In Pregnant Women, Kelly Mattran May 2011

The Relationship Between Physical Activity Recommendations And Diabetes Risk Factors In Pregnant Women, Kelly Mattran

Masters Theses, 2010-2019

BACKGROUND: Changes in maternal insulin sensitivity throughout pregnancy may help supply nutrients to a growing fetus; however, the changes may concomitantly increase the mother and child’s risk for diabetes and chronic diseases. Regular physical activity (PA) positively impacts precursors for diabetes, but the impact of PA throughout gestation is less studied. The purpose of this study was to examine the relationship between meeting PA recommendations and diabetes risk in pregnant women. METHODS: A total of 23 pregnant women were recruited for participation. Venous blood samples, questionnaires, and anthropometric measurements (height, weight, and hip/waist circumferences) were ascertained during a single session. …


Concurrent Aerobic Exercise Interferes With The Satellite Cell Response To Acute Resistance Exercise In Mhc I Muscle Fibers, Lyle W. Babcock May 2011

Concurrent Aerobic Exercise Interferes With The Satellite Cell Response To Acute Resistance Exercise In Mhc I Muscle Fibers, Lyle W. Babcock

Masters Theses, 2010-2019

Purpose: Concurrent training attenuates hypertrophy compared to resistance training alone, and does so in a fiber-type specific manner. The mechanism responsible for this ‘interference’ is unclear, and satellite cell physiology, an important hypertrophic factor, has not been examined within this context. Therefore, the purpose of this investigation was to assess the fiber-type specific satellite cell response to acute resistance, aerobic and concurrent exercise. Methods: Eight recreationally active college-aged males (23±1 yrs, 83.4±3.6 kg, 181±2 cm, and 48.5±1.6 ml/kg/min) performed 3 sets of 10 repetitions with a fourth set ≥ 10 repetitions at 75% of 1RM for both unilateral leg extensions …


Comparison Of Carotid, Brachial, And Popliteal Intima Media Thickness Among Sedentary And Physically Active Subjects Between 40 And 60 Years Old, Amanda Robinson May 2011

Comparison Of Carotid, Brachial, And Popliteal Intima Media Thickness Among Sedentary And Physically Active Subjects Between 40 And 60 Years Old, Amanda Robinson

Masters Theses, 2010-2019

The purpose of the current study was to determine the effect of long term versus recent training on intima-media thickness (IMT) and if this effect is localized in the vascular beds of the tissues directly involved in the activity. Thirty-four male subjects (aged 49.69 ± 6.48 years) were recruited and divided into the following groups: sedentary (SE), recent aerobic exercisers (RE) or long-term aerobic exercisers (LE). Carotid, brachial, and popliteal artery IMT was measured using B-mode ultrasonography. Diet, physical activity, and C-reactive protein (CRP) were measured as well. Carotid IMT was not significant (p=0.974) between the groups, with SE values …


The Effects Of Sr2w-1 Supplementation On High-Intensity Cycling Performance And Lactate Metabolism, Kevin A. Murach May 2011

The Effects Of Sr2w-1 Supplementation On High-Intensity Cycling Performance And Lactate Metabolism, Kevin A. Murach

Masters Theses, 2010-2019

Purpose: The purpose of this investigation was to examine the effects of SR2W-1 herbal supplementation on cycling performance, muscle and blood lactate, and various physiological parameters including blood glucose, heart rate (HR), rating of perceived exertion (RPE), oxygen consumption (VO2), expired ventilation (VE), respiratory exchange ratio (RER), and femoral artery blood flow. Methods: Seven recreational cyclists (Age: 26.7 ± 9.8 yrs, Height: 172.5 ± 13.3 cm, Weight:67.1 ± 10.7 kg, and VO2max: 59.5 ± 11 mL/kg/min) performed 20-min of steady-state cycling (~85% VO2max, 212.1 ± 25.0 W) followed by three 1-min high intensity intervals at VO2max workload (272.9 ± 26.9) …


The Effects Of Sr2w-1 Supplementation On Cycling Performance And Muscle Fatigue, Tara Ali Ata May 2011

The Effects Of Sr2w-1 Supplementation On Cycling Performance And Muscle Fatigue, Tara Ali Ata

Masters Theses, 2010-2019

The purpose of this investigation was to examine the potential effects of SR2W-1 supplementation on cycling performance, central fatigue, and a variety of physiological parameters, including blood lactate, blood pH, heart rate (HR), rating of perceived exertion (RPE), oxygen consumption (VO2), expired ventilation (VE), and respiratory exchange ratio (RER). Methods: Five recreational cyclists (38 ± 8 yr, 168.4 ± 4.3 cm, 68.8 ± 5.6 kg, and 54.4 ± 2.6 mL/kg/min) performed 20-min of steady-state cycling (~85% VO2max) followed by three 1-min high intensity intervals at VO2max with 30-sec active recovery periods at 100 W, 15-min passive recovery period, and a …


Volume Of Physical Activity And Hemostatic Variables In Pregnant Women, Christine Nicewonger May 2011

Volume Of Physical Activity And Hemostatic Variables In Pregnant Women, Christine Nicewonger

Masters Theses, 2010-2019

Purpose: This study investigated the relationship between blood coagulation and fibrinolytic potential and physical activity. Physical activity levels to predict blood coagulation and fibrinolytic potential were also examined. Methods: Twenty-three pregnant women, aged 19-34 yrs, had a fasted blood draw between 6 and 10 a.m. analyzed for tPA antigen, tPA activity, PAI-1 antigen, and vWF antigen. Trimester specific volume of leisure time physical activity was assessed by the Modifiable Activity Questionnaire (MAQ) and converted to METmin/wk. Based on MAQ results, women were grouped as meeting (“active”) or not meeting (“sedentary”) physical activity recommendations established by American College of Obstetrics and …


Effect Of Deep Oscillation Therapy On The Reduction Of Swelling And Pain Following Acute Ankle Sprain, Lisa Marie Friesen May 2010

Effect Of Deep Oscillation Therapy On The Reduction Of Swelling And Pain Following Acute Ankle Sprain, Lisa Marie Friesen

Masters Theses, 2010-2019

Context: Deep oscillation therapy is a novel form of therapy that claims to reduce the amount of pain and swelling in acute orthopedic injuries. However, these claims are based on anecdotal evidence and there have not been any published studies on the efficacy of deep oscillation therapy in reduction of pain and swelling. Due to the prevalence of ankle sprains in physically active individuals, this study compared the effect of deep oscillation therapy in reduction of pain and swelling to conventional treatment. Objective: To compare the effect of deep oscillation therapy on pain and swelling resulting from acute ankle sprains …


Influence Of Genotype Variations On Markers Of Skeletal Muscle Recovery From Heavy Endurance Exercise, And On Responses To Carbohydrate-Protein Supplementation, Qingnian Goh May 2010

Influence Of Genotype Variations On Markers Of Skeletal Muscle Recovery From Heavy Endurance Exercise, And On Responses To Carbohydrate-Protein Supplementation, Qingnian Goh

Masters Theses, 2010-2019

Purpose: This study examined the influence of genotype polymorphisms (specifically ACTN3 R577X, IGF-II C13790C, IGF-II G17200A, IGF2AS A1364C, IGF2AS G11711T) on markers of skeletal muscle recovery following an acute bout of heavy endurance exercise, and assessed their role in determining individual responses to carbohydrate-protein supplementation. Methods: Twelve trained male cyclists completed repeated cycling trials, each consisting of an initial session of glycogen-depleting exercise, followed four hours later by a >1 hr time-trial on a computerized cycle ergometer (VeloTron, Racermate, Inc). Subjects were randomly administered a high-carbohydrate low-protein (HCLP), or carbohydrate-only (CHO) beverage, which was consumed immediately and 2-hours post glycogen …


The Relationship Between Blood Iron Markers, Nutritional Intakes And Bone Mineral Density, Leah Dawn Morrison May 2010

The Relationship Between Blood Iron Markers, Nutritional Intakes And Bone Mineral Density, Leah Dawn Morrison

Masters Theses, 2010-2019

PURPOSE: The purpose of this study was to examine the relationship between serum ferritin (sFer) levels, nutrient intake of iron, calcium and vitamin D and bone mineral density (BMD) in female collegiate athletes. It was hypothesized that if an individual had low sFer (20µg/L. An independent T-test also showed no mean differences in BMD levels at any site when the group was divided into high and low sFer levels. CONCLUSION: There was no correlation between sFer level and BMD or between BMD and intake levels of iron, calcium or vitamin D, in female collegiate athletes participating in weight bearing sports. …


Effects Of Strengthening Exercises On Forward Shoulder Posture In Division In Competitive Female Swimmers, Rachel Lynn Ondek May 2010

Effects Of Strengthening Exercises On Forward Shoulder Posture In Division In Competitive Female Swimmers, Rachel Lynn Ondek

Masters Theses, 2010-2019

Abstract Forward shoulder posture in the repetitive overhead athlete has been isolated as a possible predisposition for injury. Shoulder strengthening and stretching programs have displayed benefits for overhead athletes such as swimmers to decrease risk of impingement, labral issues, and other shoulder pathology. The purpose of this study was to investigate the effects of strengthening exercises on forward shoulder posture in female overhead athletes. Thirty-one Division I female collegiate competitive swimmers were divided into 3 groups: control, strengthening, and combination of stretching and strengthening. The two intervention groups were assigned a 16 session strength-only or a combined strength and stretching …


The Efficacy Of Caffeine Supplementation In Collegiate Tennis Players And The Magnitude Of Improvement In Tennis Skill Mediated By Caffeine Influenced By A Polymorphism Of The Cyp1a2 Gene, Courtney Klein May 2010

The Efficacy Of Caffeine Supplementation In Collegiate Tennis Players And The Magnitude Of Improvement In Tennis Skill Mediated By Caffeine Influenced By A Polymorphism Of The Cyp1a2 Gene, Courtney Klein

Masters Theses, 2010-2019

Purpose: This study examined the efficacy of caffeine supplementation on tennis performance in male and female collegiate tennis players and whether a polymorphism of the CYP1A2 gene influenced the ergogenic response to caffeine. Methods: Eighteen collegiate tennis players (9 male; 9 female) completed two separate trials. Each test occurred one hour after the administration of either 6 mg/kg of caffeine or a placebo, administered in double-blind fashion. The treadmill portion was comprised of 15 minutes at a velocity corresponding with 50% VO2max followed by 30 minutes of intermittent sprints (5 seconds at 80% VO2max, 15 seconds at 50% VO2max). 90 …


Altered Carbohydrate And Protein Content In Sports Beverages: Influence On Recovery From Heavy Endurance Exercise, Christopher Boop May 2010

Altered Carbohydrate And Protein Content In Sports Beverages: Influence On Recovery From Heavy Endurance Exercise, Christopher Boop

Masters Theses, 2010-2019

Purpose: The purpose of this study was to compare the efficacy of different carbohydrate-protein recovery beverages following heavy endurance exercise. Methods: Twelve well-trained male cyclists completed a glycogen-depleting trial followed by a 4 hour recovery period before completing a simulated 20-km time trial. During the recovery period, subjects consumed one of three isocaloric beverages [high-carbohydrate/low-protein (HCLP); low-carbohydrate/high-protein (LCHP); carbohydrate (CHO)] at 0h and 2h, as well as immediately following the 20-km time trial. Creatine kinase (CK), muscle soreness, isometric peak torque (MVC), and mental/physical fatigue/energy ratings were measured pre- and post trial. Glucose and lactate were measured during the glycogen …


The Independent And Combined Effects Of Carbohydrate And Caffeine Ingestion On Cycling Performance, Tiffany L. Acker May 2010

The Independent And Combined Effects Of Carbohydrate And Caffeine Ingestion On Cycling Performance, Tiffany L. Acker

Masters Theses, 2010-2019

Purpose: The purpose of this study was to determine the independent and combined effects of carbohydrate and caffeine ingestion on performance and physiological parameters during high-intensity aerobic cycling (~60 minutes). Methods: Ten cyclists (28 ± 3 yr, 73.2 ± 1.9 kg) performed 20 minutes of steady-state cycling (60% Wmax) followed by a simulated 20-km time trial (TT) under the following four treatment conditions: placebo (PLA), carbohydrate (CHO), caffeine (CAF), and a combination of CHO and CAF (CHO-CAF). One hour prior to exercise subjects ingested a placebo/caffeine capsule. Beverages (250 ml) were consumed immediately prior to the 20-min steady-state, immediately prior …


The Effect Of Heavy Handrail Support On Blood Pressure Response In Normotensive Adults During Treadmill Walking, Kevin Brian Reid Dec 2009

The Effect Of Heavy Handrail Support On Blood Pressure Response In Normotensive Adults During Treadmill Walking, Kevin Brian Reid

Masters Theses, 2010-2019

Physiological and hemodynamic responses to handrail support during treadmill walking have shown a blunted response when compared to non-handrail support. The effects of treadmill walking, with the inclusion of “heavy” upper limb and torso activation through handrail support is yet unreported. The effect of “heavy” support through side handrail support (SHRS) and front console support (C) versus no handrail support (NHRS) treadmill walking was studied utilizing both slow/low (2.5 mph & 3% elevation) and high/fast (3.5 mph & 11% elevation) energy expenditure levels. Seventeen healthy adults (43.89 +/- 6.07 years) completed trials at both energy expenditure levels incorporating all three …


The Effects Of Different Doses Of Caffeine On A 40 Kilometer Cycling Time Trial: A Dose-Response Study, Michael Martin Dec 2009

The Effects Of Different Doses Of Caffeine On A 40 Kilometer Cycling Time Trial: A Dose-Response Study, Michael Martin

Masters Theses, 2010-2019

Abstract The purpose of this study was to determine the ergogenic response to different caffeine doses of 3 mg/kg and 6 mg/kg consumed by trained cyclists 1 hour prior to a 40 kilometer cycling time trial. It was hypothesized that there would not be a difference in time trial performance following caffeine supplementation of a 3 mg/kg dose as compared to a 6 mg/kg dose. Sixteen male subjects, age 18-40, were initially assessed via a VO2max test on an indoor cycle trainer. Subjects then reported to the lab on 4 separate occasions following a 10 hour fast and a 24 …