Life Sciences Commons^™

The Effect Of N-Acetylcysteine Supplementation On Recovery Of Strength Following Eccentric Muscle Injury, Ryan C. Luke

Kinesiology Dissertations

This study determined the effect of N-acetylcysteine (NAC) supplementation on recovery of strength following eccentric muscle injury. Female subjects (n = 21, age = 20.7 ± .10 yr, weight = 68.05 ± 10.3 kg, height = 1.69 ± .07 m) performed one bout of eccentric exercise involving the forearm flexor muscles. Subjects were given a placebo (food-grade cellulose; n = 10) or NAC supplement (10 mg·kg^-1 bw·d^-1; n = 11) for 7D prior to and 14D following the exercise bout. Maximal Voluntary Contraction (MVC) torque, muscle soreness, range of motion (ROM), and arm circumference were measured at …

Variability Of Vertical Ground Reaction Forces In Patients With Chronic Low Back Pain, Before And After Chiropractic Care, Brent S. Russell, Mark D. Geil, Jianhua Wu, Kathryn T. Hoiriis

Kinesiology Theses

Introduction

Many chiropractic articles and textbooks discuss gait, but there actually has been little research into the effects of chiropractic adjustment on gait. This pilot study used a quantitative method of gait evaluation before and after a series of chiropractic visits. Hypotheses: (1) adults with chronic low back pain (CLBP) would show increased variability in vertical ground reaction forces (VGRF) while walking, as compared to healthy control subjects, and (2) that, following chiropractic care, will show decreased variability.

Methods

VGRF data were collected for 6 controls and compared to 9 CLBP participants, who were also evaluated before and after the …

Effects Of Exercise Training On Fat Oxidation In Untrained Overweight And Obese Females, Kelly Manning

Kinesiology Dissertations

This study examined whether a high-intensity interval (IT) or a continuous steady-state (CT) exercise training program had the greatest effect on fat oxidation rates and fat mass loss in a population of untrained overweight and obese females. Thirteen female subjects (VO_2peak 30.6 ± 1.29 ml^.kg^.min^-1, BMI 29 ± 0.79, fat mass [FM] 33.3 ± 2.09 kg) were randomly assigned to either a CT (exercise at the relative intensity that elicits the maximal fat oxidation rate [FAT_max] ) or an IT (intervals alternating 5 minutes at 40% and 85% VO_2peak) …

Investigating The Effectiveness Of Physical Activity Interventions For Older Adults, Iina E. Antikainen

Kinesiology Dissertations

Regular physical activity can help prevent chronic conditions and it is positively linked to health-related quality of life (United States Department of Health and Human Services [USDHHS], 2000). Unfortunately, many older adults do not engage in leisure time activity (USDHHS, 2000); making it important to design and test physical activity interventions for this population. The purpose of this dissertation was to review the external validity of theory-based physical activity interventions and to examine the efficacy of a mail-based physical activity intervention. The review included 54 theory-based interventions and overall the studies focused on internal rather than external validity. The hypotheses …

Effectiveness Of Social Media Marketing: An Experimental Inquiry On College Students’ Awareness Of, Interest In, And Intention To Participate In A Campus Recreation Special Event, Kendra S. Bayne

Kinesiology Theses

This study examined the effectiveness of social media marketing on college students attending a recreation special event. Facebook and Twitter were assessed via an experimental design. To measure the effectiveness of these applications (through updating statuses) on a college student’s awareness, interest, and intent of attending a special event, three groups were employed (Facebook, Twitter, and Control). A total of 134 participants were recruited via six undergraduate courses and were assigned into three groups based on their social media consumption. Subjects responded to a pre-survey, joined their respective treatment group, and completed a post-survey. Descriptive statistics revealed that awareness increased …

Effects Of Stroke Patterns On Shoulder Joint Kinematics And Electromyography In Wheelchair Propulsion, Li-Shan Chang

Kinesiology Dissertations

The purpose of this dissertation was to analyze shoulder joint kinematics and electromyographic activities of wheelchair propulsion between two stroke patterns. Twenty physical therapy students (14 females and 6 males, age 27.4 ± 5.9 years, body mass 64.41 ± 9.37 Kg and body height 169.32 ± 9.12 cm) participated. Eleven reflective markers were placed on thorax and right scapula, humerus, third metacarpophalangeal joint and wheelchair axle. Surface electrodes were placed on right pectoralis major, anterior and posterior deltoids, infraspinatus, middle trapezius, biceps brachialis long head and triceps brachialis. Participants propelled a standard wheelchair on a stationary roller system at 0.9 …

Junctophilin Damage Contributes To Early Force Deficits And Excitation-Contraction Coupling Failure After Performing Eccentric Contractions, Benjamin T. Corona

Kinesiology Dissertations

Junctophilins (JP1 & JP2) are expressed in skeletal muscle and are the primary proteins involved in transverse (T)-tubule and sarcoplasmic reticulum (SR) membrane apposition. During the performance of eccentric contractions, the apposition of T-tubule and SR membranes may be disrupted, resulting in excitation-contraction (EC) coupling failure and thus reduced force-producing capacity. In this study, we made three primary observations: 1) Through the first three days after the performance of 50 eccentric contractions in vivo by the left hindlimb anterior crural muscles of female mice, both JP1 and JP2 were significantly reduced by ~50 and 35%, respectively, while no reductions were …

The Benefits Of Yoga Therapy For Heart Failure Patients, Paula Rei Pullen

Kinesiology Dissertations

ABSTRACT The Benefits of Yoga Therapy for Heart Failure Patients by Paula R. Pullen STATEMENT OF THE PROBLEM The number of patients living with heart failure (HF) is on the rise. Yoga has been found to improve physical and psychological parameters amongst healthy individuals. The effects of yoga on HF patients are unknown. The purpose of this study was to examine the effects of yoga on cardio-vascular endurance [functional capacity (FC)], flexibility, inflammatory markers, and quality of life (QoL) on medically stable HF patients. METHOD Forty HF patients with compensated systolic or diastolic HF participated in the study. A randomized …

Effect Of A Repeated Bout Of Eccentrically-Biased Contractions On Insulin Resistance, Michael Stephen Green

Kinesiology Dissertations

This study determined if insulin resistance (IR), induced by an acute bout of eccentrically-biased contractions that resulted in muscle injury, was attenuated following a repeated bout of contractions. Female subjects (n = 10, age 24.7 ± 3.0 yr, weight 64.9 ± 7.4 kg, height 1.67 ± 0.02 m, body fat 29.1 ± 1.9 %) performed two 30 minute bouts of downhill treadmill running (DTR 1 and DTR 2, -12 % grade, 8.0 mph) separated by 14 days. Oral glucose tolerance tests (OGTT) were administered at baseline and 48 hours following DTR 1 and DTR 2, with IR assessed by calculation …