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Biomedical subjects

T S Cahn

Publications and source records attributed to T S Cahn.

6 recordsLinked to original sources
PubMed1994

The reliability of EMG muscle scanning.

The reliability of a surface EMG scanning procedure was investigated for the right and left aspects of 10 muscle sites using a large clinical sample of 102 chronic pain patients. Two neutral postures (sitting/standing) were systematically studied on three occasions approximately one hour apart on the same day. The multivariate analysis of RMS microvolts indicated no significant effects for Age, Gender, Muscle site, Aspect or Period. The range of the Pearson correlations was 0.41 to 0.94 when all muscle sites, aspects, postures, and periods were considered. The median correlation was found to be 0.64. The pattern of reliability was seen to be slightly higher in the upper back while sitting, and slightly higher in the lower back while standing. The results indicate that with adequate attention to skin preparation, EMG sensors held in place by hand with a light pressure produce reliable results.

Adult↗
PubMed1990

Correlations between muscle regions and average total muscle activity: support for the back.

As part of their evaluation, an EMG muscle scanning procedure was conducted on 100 patients enrolled in a pain program for in-patients. The left and right aspects of 11 muscle sites were monitored in the sitting and standing postures. Correlations between muscle region and average total muscle tension suggest that the lower and upper back muscles were the most highly related to their total tension. These results do not appear to be the results of statistical artifact and the correlations do not seem redundant. Further analyses identified the T10 paraspinals muscle site as most highly correlated with their total tension. These findings are preliminary and experiments are needed to confirm or repudiate the hypothesis that there is a key muscle. Investigators are encouraged to look to the back musculature for training generalized relaxation.

Adult↗
PubMed1990

The reliability of EMG muscle scanning.

The reliability of a surface EMG scanning procedure was investigated for the right and left aspects of ten muscle sites using a large clinical sample of 102 chronic patients. Two neutral postures (sitting/standing) were systematically studied on three occasions approximately one hour apart on the same day. The multivariate analysis of RMS microvolts indicated no significant effects for Age, Gender, Muscle Site, Aspect, or Period. The range of the Pearson correlations was 0.41 to 0.94 when all muscle sites, aspects, postures, and periods were considered. The median correlation was found to be 0.64. The pattern of reliability was seen to be slightly higher in the lower back while standing. The results indicate that with adequate attention to skin preparation, EMG sensors held in place by hand with a light pressure produced reliable results.

Adult↗
PubMed1986

Assertiveness deficits and hostility in domestically violent men.

Two types of assertiveness, the ability to refuse a demand or request and the ability to initiate a request or affirmatively express a need, were examined in a clinical sample of domestically violent men (N = 78) in contrast to a nonviolent comparison group (N = 29). No significant difference was found between the groups on refusal behavior. However, a significant difference was found on initiating/request behavior, the violent men evidencing lower scores than their nonviolent counterparts. Significant differences in anger and hostility were also apparent between groups. There was a significant and positive correlation between refusal behavior and overt anger/hostility. A significant and negative correlation was observed between initiating/request behavior and covert anger/hostility. The results support the presence of social skill deficits, which appear to be significantly related to anger and hostility in domestically violent men. The findings also suggest that domestically violent men have a more specific profile of assertiveness deficits than has been previously discussed in the literature.

Anger↗
PubMedDate not supplied

Who smokes? Why?: Psychiatric aspects of continued cigarette usage among lawyers in Washington State.

Eight-hundred two lawyers, a random sample of the Washington State Bar, were surveyed to determine the prevalence of medical and psychological distress. Approximately 15% of this group reported current cigarette use. Greater levels of dysphoric symptoms and greater misuse of alcohol differentiated male smokers from male nonsmokers, whereas no differences were found for females. The implications of these findings for pharmacologic and counseling strategies to further promote smoking cessation are discussed.

Alcoholism↗