| 1. |
- Dahlström, Nicklas, et al.
(författare)
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A Comparison of Two Recorders for Obtaining In-flight Heart Rate Data
- 2006
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Ingår i: Applied Psychophysiology and Biofeedback. - : Springer-Verlag New York. - 1090-0586 .- 1573-3270. ; 31:3, s. 273-279
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Tidskriftsartikel (refereegranskat)abstract
- Measurement of mental workload has been widely used for evaluation of aircraft design, mission analysis and assessment of pilot performance during flight operations. Heart rate is the psychophysiological measure that has been most frequently used for this purpose. The risk of interference with flight safety and pilot performance, as well as the generally constrained access to flights, make it difficult for researchers to collect in-flight heart rate data. Thus, this study was carried out to investigate whether small, non-intrusive sports recorders can be used for in-flight data collection for research purposes. Data was collected from real and simulated flights with student pilots using the Polar Team System sports recorder and the Vitaport II, a clinical and research recording device. Comparison of the data shows that in-flight heart rate data from the smaller and less intrusive sports recorder have a correlation of.981 with that from the clinical recorder, thus indicating that the sports recorder is reliable and cost-effective for obtaining heart rate data for many research situations.
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| 2. |
- Hallman, David M., et al.
(författare)
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Effects of Heart Rate Variability Biofeedback in Subjects with Stress-Related Chronic Neck Pain : A Pilot Study
- 2011
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Ingår i: Applied Psychophysiology and Biofeedback. - : Springer Science and Business Media LLC. - 1090-0586 .- 1573-3270. ; 36:2, s. 71-80
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Tidskriftsartikel (refereegranskat)abstract
- Recent studies focusing on autonomic nervous system (ANS) dysfunctions, together with theoretical pathophysiological models of musculoskeletal disorders, indicate the involvement of ANS regulation in development and maintenance of chronic muscle pain. Research has demonstrated the effectiveness of heart rate variability (HRV) biofeedback (BF) in increasing HRV and reducing the symptoms of different disorders characterized by ANS aberration. The study investigated the effects of resonance frequency HRV BF on autonomic regulation and perceived health, pain, stress and disability in 24 subjects with stress-related chronic neck-shoulder pain. Twelve subjects participated in 10 weekly sessions of resonant HRV BF and were compared to a control group. Subjective reports and HRV measures during relaxation and in response to a standardized stress protocol were assessed for both groups pre- and post-intervention. Group × time interactions revealed a significantly stronger increase over time in perceived health (SF-36) for the treatment group, including vitality, bodily pain and social functioning. Interactions were also seen for HRV during relaxation and reactivity to stress. The present pilot study indicates improvement in perceived health over a 10 week intervention with HRV-biofeedback in subjects with chronic neck-pain. Increased resting HRV as well as enhanced reactivity to hand grip and cold pressor tests might reflect beneficial effects on ANS regulation, and suggest that this intervention protocol is suitable for a larger controlled trial.
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| 3. |
- Mikicin, Mirosław, et al.
(författare)
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Effect of the Neurofeedback‑EEG Training During Physical Exercise on the Range of Mental Work Performance and Individual Physiological Parameters in Swimmers
- 2020
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Ingår i: Applied Psychophysiology and Biofeedback. - : Springer Science and Business Media LLC. - 1090-0586 .- 1573-3270. ; 45, s. 49-55
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the study was to demonstrate the effects of the Neurofeedback-EEG training during physical exercise on the improvements in mental work performance and physiological parameters. The study examined seven swimmers based on the following anthropometric measurements: body height, body mass and body composition. The Kraepelin’s work curve test, EEG and EMG during physical exercise were also performed. The athletes followed 20 Neurofeedback-EEG training sessions on the swimming ergometer for 4 months. Most mean indices of partial measures of the work curve were significantly modified (p<0.05) following the Neurofeedback-EEG training. Mean level of maximal oxygen uptake in study participants was over 55 ml/kg/min, with statistically significant differences documented between the first and the second measurements. No significant differences were found in the fatigue rate between the measurements 1 and 2. The improved mental work performance following the Neurofeedback-EEG training facilitates optimization of psychomotor activities.
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| 4. |
- Olsson, Erik, et al.
(författare)
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Internet-based biofeedback-assisted relaxation training in the treatment of hypertension : a pilot study
- 2010
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Ingår i: Applied Psychophysiology and Biofeedback. - : SpringerLink. - 1090-0586 .- 1573-3270. ; 35:2, s. 163-170
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Tidskriftsartikel (refereegranskat)abstract
- The effectiveness of biofeedback-assisted behavioral treatment with Internet-based client-therapist contact for hypertension was tested in outpatient settings. A pilot study with a randomized controlled design was adopted with two conditions (treatment versus passive controls), lasting for 8 weeks. There were two assessment time points (pre-treatment and post-treatment) measuring clinic systolic and diastolic blood pressure (SBP and DBP) and administration of a questionnaire collecting demographic and subjective data. Participants included 19 Swedish adults diagnosed with hypertension. The treatment group lowered their SBP 5.9 mm Hg and their DBP 7.6 mm Hg while the control group lowered their SBP 0.8 mm Hg and DBP 3.0 mm Hg. The effect of treatment was significant for DBP but not for SBP. There were no other significant effects of treatment. This pilot study shows encouraging results regarding Internet-based biofeedback treatment for hypertensive adults. However, further research using a larger sample is needed.
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| 5. |
- Tornöe, Birte, et al.
(författare)
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Computer Animated Relaxation Therapy in Children Between 7 and 13 Years with Tension-Type Headache: A Pilot Study
- 2012
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Ingår i: Applied Psychophysiology and Biofeedback. - : Springer Science and Business Media LLC. - 1573-3270 .- 1090-0586. ; 37:1, s. 35-44
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Tidskriftsartikel (refereegranskat)abstract
- This pilot study evaluated the effect of computer animated relaxation therapy in children between 7 and 13 years with tension-type headache and the children's experiences with the therapy. The therapy consisted of an uncontrolled nine-session course in modified progressive relaxation therapy assisted by computer animated surface EMG provided from the trapezius muscles and with the physiotherapist as a participant observer. Outcome measures were (a) headache frequency and intensity, (b) pericranial tenderness, (c) tension patterns, and (d) evaluations assessed at baseline and at 3 months follow up. Nine children, mean age 10.9 (SD 1.7) years, diagnosed with frequent episodic or chronic tension-type headache completed the course. The results showed a mean improvement of 45% for headache frequency at 3 months follow up versus baseline and a significant reduction in headache frequency for all participants and in Total Tenderness Score for children with frequent episodic tension-type headache. The children expressed a growing understanding of body reactions and an acquired ability to deactivate and regulate these reactions. Computer animated SEMG seems an applicable learning strategy for young headache sufferers. This study suggests that children below the age of 13 need both the dialog and guidance from a participant observer in order to achieve body awareness.
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| 6. |
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| 7. |
- Weise, Cornelia, et al.
(författare)
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Stability of physiological variables in chronic tinnitus sufferers
- 2008
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Ingår i: Applied Psychophysiology and Biofeedback. - : Springer. - 1090-0586 .- 1573-3270. ; 33:3, s. 149-159
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Tidskriftsartikel (refereegranskat)abstract
- The etiological tinnitus models propose that suffering can be caused and aggravated by heightened physiological arousal. Therefore psychophysiological treatments are applied. Stability of the measured parameters is essential for the use of biofeedback as well as to permit the attribution of changes to the administered treatment. The aim of our study was to investigate the 3-month reproducibility of psychophysiological parameters in 60 tinnitus patients. Using a repeated-measures design, the activity of these parameters was assessed twice during various stress and relaxation trials. The results showed that the measurements of frontalis, masseter and trapezius muscles were stable, while for the sternocleidomastoid, the skin conductance level (SCL) and the skin temperature retest-stability could not be evidenced. For all parameters, test-retest stability was weak for the relative scores. In conclusion, our study has important implications for applied psychophysiology research: (1) the measurement of EMG assessed in a clinical sample is stable over a 3-month interval; (2) in contrast, the measurements of SCL and skin temperature as well as all relative scores are less stable; and (3) the stability of EMG-parameters in our sample gives first hints that physiological changes can be attributed to an administered biofeedback treatment but further research is required. © 2008 Springer Science+Business Media, LLC.
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| 8. |
- Wilhelm, F. H., et al.
(författare)
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Mechanisms of virtual reality exposure therapy : The role of the behavioral activation and behavioral inhibition systems
- 2005
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Ingår i: Applied Psychophysiology and Biofeedback. - : Springer Science and Business Media LLC. - 1090-0586 .- 1573-3270. ; 30:3, s. 271-284
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Tidskriftsartikel (refereegranskat)abstract
- J. A. Gray’s (1975) theory distinguishes between two motivational systems, which he refers to as the behavioral activation system (BAS) and the behavioral inhibition system (BIS). D. C. Fowles (1980) has shown that heart rate responses reflect activity of the BAS, and electrodermal responses reflect activity of the BIS. Both BAS and BIS are reliably activated during in-vivo exposure to fearful situations (F. H. Wilhelm & W. T. Roth, 1998). However, due to the constraints imposed by virtual reality (VR), we hypothesized that VR exposure to fearful situations would activate the BIS alone. To test this hypothesis, a VR free-standing elevator simulation was presented to participants selected for high and low fear of heights. As predicted, the high-anxious group strongly responded electrodermally (effect size d = 1.53), but showed only minimal HR elevations during exposure (d = 0.12), and little other cardiovascular or respiratory changes. The low-anxious control group showed little electrodermal and HR reactivity (d = 0.28 and 0.12). A comparison with data from a previous study demonstrated that this pattern was in stark contrast to the large electrodermal and cardiovascular response observed during situational in-vivo exposure outside the laboratory. We conclude that the BIS, but not BAS, is selectively activated during VR exposure, causing discordance between self-report and commonly used physiological measures of anxiety. Results are discussed within the framework of E. B. Foa & M. J. Kozak’s (1986) emotional processing theory of fear modification, suggesting different mechanisms underlying VR and in-vivo exposure treatments. © 2005 Springer Science+Business Media, Inc.
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