Flotation Effect on Premenstrual Syndrome

Part of the Recent Research in Psychology book series (PSYCHOLOGY)


Three groups of women having premenstrual syndrome (PMS) completed checklists for number and severity of symptoms at prescribed intervals, for the assessment of symptoms over the last eighteen months and symptoms before and subsequent to experimental conditions. They were divided into two experimental float groups and a control group. The two-float group floated in a flotation tank once during a non PMS interval and once during a PMS interval. The one-float group floated only during a non PMS interval. The control group did not float. An analysis of variance using repeated measures revealed several outcomes. There were no significant group differences in overall number or severity of symptoms. When only checklists performed during treatment were assessed, the one-float group showed significantly greater overall symptom severity than the other groups. PMS symptoms vary significantly over all time intervals, and flotation results in immediate reduction of symptoms and severity to very low levels. Subsequent to the onset of PMS symptoms after the non PMS float, symptoms and severity significantly increased beyond what was expected and were significantly decreased only by a second float during the PMS interval. Those who had the second float remained at low levels for both symptom number and severity while the other groups showed significantly higher values.


Premenstrual Syndrome Premenstrual Symptom Interview Room Symptom Number Unequal Group Size 
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© Springer-Verlag New York Inc. 1990

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