| Chest muscle activity and panic anxiety: a preliminary investigation. | |
| | |
MedLine Citation:
|
PMID: 1901419 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
This report represents a pilot investigation of the role of chest muscle electromyographic (EMG) activity in developing panic episodes. Chest EMG activity was obtained as part of a larger study examining ventilatory differences between panic sufferers and normal controls. Frontalis EMG, heart rate, and minute ventilation (breathing rate and tidal volume) were also obtained during the study. The ventilatory procedure involved exposing the subjects to three periods of carbon dioxide gas inhalations (1%, 3%, 5%; balance oxygen). Subjective measures of frightening cognitions and body sensations were obtained across the inhalation phases as well. The panic disorder subjects were divided, on the basis of subjective anxiety ratings obtained throughout the study, into high anxious (HA) and low anxious (LA) panic disorder groups. The HA panic disorder patients exhibited significantly higher chest EMG activity than the LA panic disorder patients and controls across all phases of the experiment. In addition, the chest EMG predicted, better than the other physiologic measures, the number of frightening cognitions and sensations reported by the subjects during the baseline and 5% CO2 inhalation phases. Overall, the results were supportive of the further study of chest wall EMG activity in the pathogenesis of panic attacks. |
| | |
Authors:
|
P Lynch; D A Bakal; W Whitelaw; T Fung |
Related Documents
:
|
2515569 - Temperature effects on pulmonary receptor responses to airway pressure and co2 in allig... 16849139 - Effect of magnesium salts on the sulphation capacity of limestone slurry. 18369689 - The relationship between exercise intensity and affective responses demystified: to cra... 2494759 - Increase in ventilation caused by aminophylline in the absence of changes in ventral me... 1928869 - Sensation and control of breathing: a dynamic model. 8109779 - Capnometer transport delay: measurement and clinical implications. 2793749 - Decreased exercise muscle lactate release after high altitude acclimatization. 9558019 - Chronic fatigue syndrome: a literature review from a physiatric perspective. 10405119 - Brain norepinephrine changes with simulated weightlessness and relation to exercise tra... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Psychosomatic medicine Volume: 53 ISSN: 0033-3174 ISO Abbreviation: Psychosom Med Publication Date: 1991 Jan-Feb |
Date Detail:
|
Created Date: 1991-05-08 Completed Date: 1991-05-08 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 0376505 Medline TA: Psychosom Med Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 80-9 Citation Subset: IM |
Affiliation:
|
Division of Psychology, Foothills Hospital, Calgary, Alberta, Canada. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Anxiety Disorders / diagnosis, physiopathology* Arousal / physiology* Carbon Dioxide / diagnostic use Electromyography Female Heart Rate / physiology Humans Muscle Contraction / physiology* Panic / physiology* Pectoralis Muscles / physiopathology* Phobic Disorders / diagnosis, physiopathology |
| Chemical | |
Reg. No./Substance:
|
124-38-9/Carbon Dioxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Randomized double-blind study of fluvoxamine and maprotiline in treatment of depression.
Next Document: Endogenous activation of prostaglandin synthesis in rabbit colonic explants cultured in vitro.