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OBJECTIVES: This study assessed yoga as an adjuvant strategy for symptoms of combat-related posttraumatic stress disorder (PTSD). METHODS: Subjects had significant, combat-related PTSD. Control data were collected during an eight-week waiting period. Trauma-sensitive yoga sessions of 90 minutes duration were provided every seven days for eight weeks. Assessments included the PTSD checklist (PCL); the Depression, Anxiety and Stress Scale (DASS); the Pittsburgh Sleep Quality Index (PSQI); the Adult/Adolescent Sensory Profile (AASP); the SF36 Quality of Life instrument; and a brief, structured pre-enrolment assessment of attitudes towards yoga. Biomarkers were also assessed. RESULTS: Thirty participants were recruited, with 28 completing the protocol ( Mage=63.5 years). For most variables, there was no significant change in results after the waiting period. Comparing measurements obtained immediately prior to the commencement of the intervention to those taken after completion of eight yoga sessions, significant changes included an increase in the serum dehydroepiandrosterone concentration, decreased total PCL score (and all PCL sub-scales), decreases in all DASS sub-scale scores and significant improvements in PSQI and SF36 scores. No adverse events were reported. CONCLUSIONS: A range of benefits were observed after yoga, consistent with the theoretical construct for the long history of yoga as a strategy to reduce stress and promote well-being.
OBJECTIVES: This study assessed yoga as an adjuvant strategy for symptoms of combat-related posttraumatic stress disorder (PTSD). METHODS: Subjects had significant, combat-related PTSD. Control data were collected during an eight-week waiting period. Trauma-sensitive yoga sessions of 90 minutes duration were provided every seven days for eight weeks. Assessments included the PTSD checklist (PCL); the Depression, Anxiety and Stress Scale (DASS); the Pittsburgh Sleep Quality Index (PSQI); the Adult/Adolescent Sensory Profile (AASP); the SF36 Quality of Life instrument; and a brief, structured pre-enrolment assessment of attitudes towards yoga. Biomarkers were also assessed. RESULTS: Thirty participants were recruited, with 28 completing the protocol ( Mage=63.5 years). For most variables, there was no significant change in results after the waiting period. Comparing measurements obtained immediately prior to the commencement of the intervention to those taken after completion of eight yoga sessions, significant changes included an increase in the serum dehydroepiandrosterone concentration, decreased total PCL score (and all PCL sub-scales), decreases in all DASS sub-scale scores and significant improvements in PSQI and SF36 scores. No adverse events were reported. CONCLUSIONS: A range of benefits were observed after yoga, consistent with the theoretical construct for the long history of yoga as a strategy to reduce stress and promote well-being.
Substantial evidence suggests that a key distinction in the classification of human emotion is that between an appetitive motivational system association with positive or pleasant emotion and an aversive motivational system associated with negative or unpleasant emotion. To explore the neural substrates of these two systems, 12 healthy women viewed sets of pictures previously demonstrated to elicit pleasant, unpleasant and neutral emotion, while positron emission tomographic (PET) measurements of regional cerebral blood flow were obtained. Pleasant and unpleasant emotions were each distinguished from neutral emotion conditions by significantly increased cerebral blood flow in the vicinity of the medial prefrontal cortex (Brodmann's area 9), thalamus, hypothalamus and midbrain (P < 0.005). Unpleasant was distinguished from neutral or pleasant emotion by activation of the bilateral occipito-temporal cortex and cerebellum, and left parahippocampal gyrus, hippocampus and amygdala (P < 0.005). Pleasant was also distinguished from neutral but not unpleasant emotion by activation of the head of the left caudate nucleus (P < 0.005). These findings are consistent with those from other recent PET studies of human emotion and demonstrate that there are both common and unique components of the neural networks mediating pleasant and unpleasant emotion in healthy women.
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This paper reports three studies showing sex differences in EEG asymmetry during self-generated cognitive and affective tasks. In the first experiment, bilateral EEG, quantified for alpha on-line, was recorded from right-handed subjects while they either whistled, sang or recited lyrics of familiar songs. The results revealed significant asymmetry between the whistle and talk conditions only for subjects with no familial left-handedness and, within this group, only for females and not for males. In the second experiment, bilateral EEG was recorded while right-handed subjects (with no familial left-handedness) self-induced covert affective and non-affective states. Results revealed significantly greater relative right-hemisphere activation during emotion versus non-emotion trials only in females; males showed no significant task-dependent shifts in asymmetry between conditions. The third experiment was designed to test the hypothesis that females show greater percent time asymmetry than males during biofeedback training for symmetrical and asymmetrical EEG patterns. Results confirmed this prediction as well as indicating that females show better control of such asymmetrical cortical patterning. These findings provide new neuropsychological support for the hypothesis of greater bilateral flexibility in females during self-generation tasks.
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