The Significance of Time to Exhaustion at the Velocity at VO2Max (open access)

The Significance of Time to Exhaustion at the Velocity at VO2Max

There were two primary goals in this investigation. The first goal was to determine if inter-individual variability in time to exhaustion at the velocity associated with V02max (Tlim at Vmax) was explained by anaerobic capacity (AC), Vmax, anaerobic threshold (AT), and/or a combination variable in the form [AC • (Vmax - vAT)^-1]. The second goal was to determine if AC could be predicted from Tlim at Vmax, AT, and/or a combination variable in the form [Tlim • (Vmax - vAT)].
Date: May 1998
Creator: Ehler, Karen
System: The UNT Digital Library
Implementing a Physical Activity Centered Education Program for Individuals with Brain Injury (open access)

Implementing a Physical Activity Centered Education Program for Individuals with Brain Injury

Research has shown that health promotion programs (HPP) that incorporate education about physical activity (PA) are one mode of rehabilitation that can improve the health of individuals with disabilities. However, education-based PA curriculum is not included in the rehabilitation program for individuals with a brain injury, indicating a gap in services provided. Consequently, the purpose of this study was to create and deliver a physical activity centered education (PACE) program that supplemented the existing rehabilitation program for brain injury. PACE consists of an 8-week (16 session) program aimed to (1) increase self-efficacy for being physically active of PACE program participants, (2) increase PA stage of change in PACE program participants or the maintenance of adequate level of PA, and (3) improve the rehabilitation outcomes (i.e., abilities, participation, adjustment) of PACE program participants. Based on previous research, it is hypothesized that participation in PACE will result in (1A) increased self-efficacy for PA, (1B) greater self-efficacy for PA than the standard of care group, (2A) increased readiness to be physically active, (2B) greater readiness to change their PA behavior than the standard of care group, (3A) improved rehabilitation outcomes, and (3B) greater rehabilitation outcomes than the standard of care group. the PACE …
Date: May 2012
Creator: Woolsey, Anne-Lorraine T.
System: The UNT Digital Library

Neuroelectric Indices of Emotional Processing in Individuals with History of Concussion

Concussions are a common type of traumatic brain injury resulting in a series of physical, emotional, and psychosocial symptoms. Following a concussion, emotional processing is thought to be altered through small functional and structural disruptions that impact information processing pathways, which may eventually manifest as behavioral impairments. Thus, the use of both behavioral and functional outcomes may be effective for assessing the changes in emotional processing that may occur following a concussion. The primary purpose of this study was to examine behavioral and neurocognitive differences in response to emotional face images between individuals with and without a history of concussion. Fifty participants (18 female; 32 male) were recruited and assigned to either the concussed (n = 23; Mage = 24.1 ± 1.0) or non-concussed (n = 27; Mage = 23.2 ± 0.6) group based on medical and self-reported concussion history. Participants completed a modified emotional oddball paradigm where representative positive (smiling), negative (frowning), and neutral faces from the Radboud Faces Database were displayed. Neuroelectric measures of P3 amplitude and latency, as well as behavioral measures of response accuracy and reaction time were assessed during the experiment. The concussion group showed significant reductions in accuracy, but no difference in reaction time …
Date: May 2020
Creator: Magera, Nicholas P
System: The UNT Digital Library

The Effect of Steroid Dose Regimen on the Relationship Between Lower Extremity Muscle Function and Cardiac Function in Post Heart Transplant Patients

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Differences in cardiovascular/aerobic function in heart transplant patients might be attributed to the rate of corticosteroid withdrawal and/or to skeletal muscle function. This hypothesis was tested among nine male, cardiac transplant recipients. Prednisone dosage was monitored, and isokinetic strength testing was performed at 4 different time periods throughout the first year post-transplantation. Cardiovascular/aerobic measurements were obtained at the fourth time period. Pre-surgery characteristics were obtained from the patient's medical record. Significant Pearson-product moment correlations were only found between muscle function and aerobic function and between pre-surgery characteristics and cardiovascular/aerobic performance. The results of this study show no evidence that rapid reduction of prednisone dosage enhances aerobic function by benefiting skeletal muscle function.
Date: May 2001
Creator: Galatas, Mary V.
System: The UNT Digital Library