Unperformed Rituals in an Unread Book

What is the significance of an unperformed ritual? And what is the meaning of an unread text? The intuitive answer, that unperformed rituals and unread texts have no meaning, is clearly wrong in the case of Leviticus. The rituals depicted in its text mean a great deal, because Jews, Samaritans and Christians continue to ritualize Leviticus as part of their scriptures. Leviticus’s status as the third book of scripture has remained virtually uncontested throughout the histories of these three religions, despite the fact that people do not observe many of its offering instructions or, among Christians, even read much of its text. It retains its place among the sacred scrolls and books reproduced by each religion. Therefore if the job of commentary is to explain the meaning of Leviticus, it cannot stop with the book’s words, much less their original referents. The meanings of Leviticus have been broadcast by the sounds of its words and the sight of the books and scrolls that contain it as much as by semantic interpretations of its contents, which have themselves been manifested in ritual and legal performances as well as in sermons and commentaries. Out of all this emerges the phenomenon of scripture, of which Leviticus is an original and integral part

An overlooked connection: serotonergic mediation of estrogen-related physiology and pathology

BACKGROUND: In humans, serotonin has typically been investigated as a neurotransmitter. However, serotonin also functions as a hormone across animal phyla, including those lacking an organized central nervous system. This hormonal action allows serotonin to have physiological consequences in systems outside the central nervous system. Fluctuations in estrogen levels over the lifespan and during ovarian cycles cause predictable changes in serotonin systems in female mammals. DISCUSSION: We hypothesize that some of the physiological effects attributed to estrogen may be a consequence of estrogen-related changes in serotonin efficacy and receptor distribution. Here, we integrate data from endocrinology, molecular biology, neuroscience, and epidemiology to propose that serotonin may mediate the effects of estrogen. In the central nervous system, estrogen influences pain transmission, headache, dizziness, nausea, and depression, all of which are known to be a consequence of serotonergic signaling. Outside of the central nervous system, estrogen produces changes in bone density, vascular function, and immune cell self-recognition and activation that are consistent with serotonin's effects. For breast cancer risk, our hypothesis predicts heretofore unexplained observations of the opposing effects of obesity pre- and post-menopause and the increase following treatment with hormone replacement therapy using medroxyprogesterone. SUMMARY: Serotonergic mediation of estrogen has important clinical implications and warrants further evaluation

Effect of different stretching strategies on the kinetics of vertical jumping in female volleyball athletes

Purpose: The present study aimed to examine the effect of static stretching (SS) and a sport-specific dynamic stretching (DS) session at two specific post-stretch time intervals in highly trained female athletes (age 19.90 ± 1.60 years; height 1.80 ± 0.06 m; mass 76.87 ± 9.95 kg) on kinetic parameters of peak force, time-to-takeoff, and rate of force development. Methods: The data were collected over 3 days (randomized within subject design with control session). Following each stretch session (SS vs. DS vs. control) of equal duration (7 min total: 30 s per targeted muscle group) participants performed countermovement jumping on a force platform at 1 and 15 min after stretching. Results: The DS session significantly improved upon kinetic variables of rate of force development, peak force, and time-to-takeoff relative to SS at 1 min after stretching. No significant effect was found at 15 min. Conclusion: Together these findings suggest that when training and competing to jump quickly and maximally the female athlete should incorporate DS instead of SS as part of their pre-competition warm-up, but conduct performance within 15 min of their warm-up to elicit maximal gains