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Free-falling Bodies: Example

An object falling without any air resistance under the influence of gravitational force is said to be in free-fall. For free-falling bodies, the acceleration due to gravity is constant, irrespective of their mass. Free-fall is experienced not only by objects falling downward, but also by all objects whose motion is influenced by gravitational force alone. The dynamics of free-fall motion can be calculated using kinematic equations of motion, since free-fall acceleration is constant.
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Permanent Cerebral Vessel Occlusion via Double Ligature and Transection
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Shibari: double hanging during consensual sexual asphyxia.

Paolo Roma1, Floriana Pazzelli, Maurizio Pompili

  • 1NESMOS Department (Neurosciences Mental Health and Sensory Organs) Sapienza, Faculty of Medicine and Psychology, University of Rome, Level 3, Room 113, Via di Grottarossa, Sant'Andrea Hospital 1035-1039, 00189, Rome, Italy. paolo.roma@uniroma1.it

Archives of Sexual Behavior
|November 29, 2012
PubMed
Summary

A fatal shibari (sexual asphyxia) case highlights risks in masochistic practices. The surviving participant had borderline personality disorder, suggesting a link between psychiatric conditions and dangerous sexual behaviors.

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Area of Science:

  • Forensic pathology
  • Psychiatry
  • Sexual health

Background:

  • Shibari, a BDSM practice involving suspension and sexual asphyxia, carries inherent risks.
  • This case involves a fatal outcome during a double suspension sexual asphyxia activity.

Observation:

  • Autopsy findings are presented for the deceased participant.
  • The surviving participant underwent psychiatric and psychometric evaluation.

Findings:

  • The survivor exhibited borderline personality disorder, a history of childhood sexual abuse, substance use, self-harm, and sexual dysregulation.
  • The case raises concerns about safety protocols in masochistic practices and the participation of individuals with psychiatric disorders.

Implications:

  • This case underscores the potential dangers of extreme sexual practices, particularly for individuals with pre-existing psychiatric conditions.
  • Further research into similar cases is needed to understand risks and inform treatment strategies for participants in high-risk sexual activities.