Article 88
Execution of punishments of imprisonment and life long imprisonment
3. During the execution of a punishment, the convicted person shall not be subjected to inhuman or degrading treatment or punishment, including unnecessary mental and physical exertion or the deprivation of adequate medical treatment or other basic necessities.
3. In exercising its discretion to make a designation under paragraph 1, the Court shall take into account the following:
(b) The application of widely accepted international treaty standards governing the treatment of prisoners;