Current Search: heart-rate variability (x)
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- Title
- THE EFFECT OF BIOFEEDBACK ON COPING FOR PATIENTS WITH DEPRESSION.
- Creator
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Atkinson, Amber L, Stockmann, Cherrill, University of Central Florida
- Abstract / Description
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Background: Individuals with depression have a higher incidence of comorbidity which significantly decreases their ability to function and increases their utilization of health care. Due to the severity of the economic burden resulting with depression, research is needed to further examine the most effective treatments for depression. Biofeedback is a therapy that teaches patients how to control the physical affects that manifest during depression. Aim: The purpose of this review of...
Show moreBackground: Individuals with depression have a higher incidence of comorbidity which significantly decreases their ability to function and increases their utilization of health care. Due to the severity of the economic burden resulting with depression, research is needed to further examine the most effective treatments for depression. Biofeedback is a therapy that teaches patients how to control the physical affects that manifest during depression. Aim: The purpose of this review of literature is to discover the benefits of biofeedback for patients diagnosed with depression. Method: An electronic literature search was conducted using various databases to retrieve articles examining biofeedback as an intervention for patients with depression or depressive symptoms. Results: Studies that used biofeedback as an intervention for depression reported significant physical benefits for patients, including decreased heart rate variability and respiratory rate, as well as improved function. Conclusion: Research indicates that treatments need to have the potential to empower individuals, relieve them of their negative symptoms, relieve their financial burden, and allow them the quality of life they deserve.
Show less - Date Issued
- 2017
- Identifier
- CFH2000167, ucf:46050
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000167
- Title
- IMPROVED PHYSIOLOGY AND PSYCHOSOCIAL WELL-BEING FOR CHILDREN WITH PHYSICAL DISABILITIES THROUGH VIRTUAL REALITY IMMERSION.
- Creator
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Fralish, Bethany D, Nickels, Megan, University of Central Florida
- Abstract / Description
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The purpose of this case study was to examine the physiological and psychosocial effects of an immersive virtual reality (VR) system in a female, young adult with right side paralysis following a left hemisphere brain bleed in order to determine the usefulness of immersive VR for children with physical disabilities, in particular, cerebral palsy (CP). The current study consisted of six sessions over a span of three weeks, with each session lasting approximately 45 minutes. Physiological...
Show moreThe purpose of this case study was to examine the physiological and psychosocial effects of an immersive virtual reality (VR) system in a female, young adult with right side paralysis following a left hemisphere brain bleed in order to determine the usefulness of immersive VR for children with physical disabilities, in particular, cerebral palsy (CP). The current study consisted of six sessions over a span of three weeks, with each session lasting approximately 45 minutes. Physiological factors (upper body mobility, heart rate variability) were assessed via a hand use questionnaire and a heart rate monitor, while psychosocial factors (e.g. positive mood) were assessed through post-session debriefing discussions with the participant. All measures were completed at each of the six VR sessions, with the exception of the hand use questionnaire, which was administered at baseline, and post-intervention. The VR programs selected were specifically chosen to engage upper body and arm movements. Descriptive analyses and coding of interviews were conducted to examine changes throughout the study sessions. The participant reported an increase in hand mobility and psychosocial well-being, such as improvement in mood, as a result of her participation in the VR sessions. The results of the current study suggest that the use of movement-specific VR programs may be beneficial to children with physical disabilities and CP, although due to the single-subject design of the study, further research is warranted.
Show less - Date Issued
- 2017
- Identifier
- CFH2000255, ucf:46028
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000255
- Title
- Overexpression of human Cu/Zn Superoxide Dismutase in Mice: A Model to Study the Effect of Increased Superoxide Scavenging on the Autonomic Control of the Heart.
- Creator
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Hatcher, Jeffrey, Cheng, Zixi, Bossy-Wetzel, Ella, Fernandez-Valle, Cristina, Belfield, Kevin, University of Central Florida
- Abstract / Description
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Dysregulation of the autonomic cardiovascular control is a complication of diseases including diabetes, hypertension, sleep apnea, and aging. A common factor in these conditions is an increase in reactive oxygen species (ROS) in neural, cardiac, and endothelial tissues. Cu/Zn superoxide dismutase (SOD1) is an intracellular anti-oxidant enzyme that catalyzes dismutation of the superoxide anion (O2.-) to hydrogen peroxide (H2O2). Expression and function of this enzyme are diminished in...
Show moreDysregulation of the autonomic cardiovascular control is a complication of diseases including diabetes, hypertension, sleep apnea, and aging. A common factor in these conditions is an increase in reactive oxygen species (ROS) in neural, cardiac, and endothelial tissues. Cu/Zn superoxide dismutase (SOD1) is an intracellular anti-oxidant enzyme that catalyzes dismutation of the superoxide anion (O2.-) to hydrogen peroxide (H2O2). Expression and function of this enzyme are diminished in pathologies that impair cardiovascular autonomic control. This study employed mice overexpressing a transgene for human SOD1 (hSOD1) to determine if its overexpression would alter autonomic regulation of BP, HR, and BRS in healthy animals, and if this animal line (C57B6SJL-Tg (SOD1)2 Gur/J) could be used in future studies to determine if hSOD1 overexpression can preserve cardiac autonomic function in disease models. To accomplish this aim, using anesthetized SOD1 and C57 (control) mice, we recorded HR, and aortic depressor nerve (ADN) activity changes in response to pharmacologically-induced BP changes in order to measure baroreflex and baroreceptor sensitivity, respectively. In order to identify any alterations in central, efferent, and cardiac components of the baroreflex arc, we electrically stimulated the left ADN and left cervical vagus and compared the reductions in BP and HR between the C57 and SOD1 mice. Time- and frequency-domain analysis of heart rate variability (HRV) was performed using pulse pressure recordings prior to pharmacologic or surgical procedures. We found that hSOD1 overexpression in the SOD1 mouse line, in comparison to C57 controls did not significantly affect resting HR (C57: 558 (&)#177; 8 vs. SOD1:553 (&)#177; 13 beats-per-minute) or blood pressure (C57: 88.8 (&)#177; 2.9 vs.SOD1: 85.8 (&)#177; 2.1 mmHg). hSOD1 overexpression did not affect the decrease in average mean arterial pressure (MAP) following injection of sodium nitroprusside (SNP) (C57: 38.7 (&)#177; 1.4 vs. SOD1: 39.5 (&)#177; 1.3 mmHg) or increase in average MAP (C57: 135.8 (&)#177; 3.1 vs. SOD1: 136.6 (&)#177; 3.5 mmHg) following injection of phenylephrine (PE). BRS, as measured by the averaged regression lines for ?HR/?MAP for the SNP-induced tachycardic baroreflex (C57: 0.57 (&)#177; 0.06 bpm/mmHg, SOD1: 0.61 (&)#177; 0.08 bpm/mmHg)) and the PE-induced bradycardic baroreflex (C57: -2.9 (&)#177; 0.57 bmp/mmHg, SOD1: -4.3 (&)#177; 0.84 bpm/mmHg) are not significantly different between C57 and SOD1. Baroreceptor activation showed a significant increase in gain (C57: 5.4 (&)#177; 0.3 vs. SOD1: 7.4 (&)#177; 0.5 %/mmHg, P (<) 0.01) in the SOD1 transgenic mice. Heart rate depression in response to electrical stimulation of the left ADN and cervical vagus was comparable between C57 and SOD1, though MAP reduction in response to ADN stimulation is slightly, but significantly increased at 50 Hz in SOD1 animals. Time- domain analysis of HRV did not reveal any significant difference in beat-to-beat variability between SOD1 and C57 (SDNN: C57: 2.78 (&)#177; 0.20, SOD1: 2.89 (&)#177; 0.27), although frequency-domain analysis uncovered a significant reduction in the low-frequency power component of the HRV power spectral distribution (C57: 1.19 (&)#177; 0.11, SOD1: 0.35 (&)#177; 0.06, P (<) 0.001). This study shows that although hSOD1 overexpression does not affect overall baroreflex function, it does potentiate baroreceptor sensitivity and brain stem control of arterial pressure, and reduces low-frequency beat-to-beat variations in HR, without affecting total HRV.
Show less - Date Issued
- 2015
- Identifier
- CFE0005803, ucf:50025
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005803