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471.
Terri L. Zucker Kristin W. Samuelson Frederick Muench Melanie A. Greenberg Richard N. Gevirtz 《Applied psychophysiology and biofeedback》2009,34(2):135-143
Recent studies have found a significant association between PTSD and low heart rate variability (HRV), a biomarker of autonomic
dysregulation. Research indicates that respiratory sinus arrhythmia (RSA) biofeedback increases HRV while reducing related
pathological symptoms. This controlled pilot study compared RSA biofeedback to progressive muscle relaxation (PMR) as adjunctive
interventions for 38 persons with PTSD symptoms in a residential treatment facility for a substance use disorder. Both groups
were assessed at pre-intervention and 4-week post-intervention. Group × time interactions revealed significantly greater reductions
in depressive symptoms and increases in HRV indices for the RSA group. Both groups significantly reduced PTSD and insomnia
symptoms and a statistical trend was observed for reduced substance craving for the RSA group. Increases in HRV were significantly
associated with PTSD symptom reduction. Overall, these results provide preliminary support for the efficacy of RSA biofeedback
in improving physiological and psychological health for individuals with PTSD. 相似文献
472.
Terri P. Freemantle Tim Wacher John Newby Nathalie Pettorelli 《African Journal of Ecology》2013,51(3):482-492
Habitat evaluation is considered an essential step for assessing the potential for an area to support a viable reintroduced population. Remote sensing techniques can support such investigations, by greatly enhancing the temporal and spatial coverage of habitat assessments. This study makes use of freely available earth observation data to evaluate the suitability of the Ouadi Rimé–Ouadi Achim Game Reserve in central Chad for the reintroduction of the Scimitar‐horned Oryx. The reserve was the last stronghold of the species within its historical range, prior to extinction in the wild in the 1980s, providing a basis for reintroduction. Results show that since the 1980s, there has been a steady increase in average annual precipitation and satellite‐derived estimates of primary production. The spatial downscaling of the average trend in primary production showed that the north of the protected area exhibited a drying trend over the period 1982–2008, while the south was associated with intense greening. As a result, the subdesert transition zone preferred by oryx is currently narrowing. If this is correct, this implies a potential reduction of favourable habitat for the oryx, which could have detrimental effects on the success of establishing a self‐sustaining reintroduced population. 相似文献
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