is believed by the archeologists to confirm the use of this method in ancient Rome. Cause of death The length of time required to reach death could range from hours to days depending on method, the victim's health, and the environment. A literature review by Maslen and Mitchell identified scholarly support for several possible causes of death: cardiac rupture, heart failure, hypovolemic shock, acidosis, asphyxia, arrhythmia, and pulmonary embolism. Death could result from any combination of those factors or from other causes, including sepsis following infection due to the wounds caused by the nails or by the scourging that often preceded crucifixion, eventual dehydration, or animal predation. A theory attributed to Pierre Barbet holds that, when the whole body weight was supported by the stretched arms, the typical cause of death was asphyxiation. He wrote that the condemned would have severe difficulty inhaling, due to hyper-expansion of the chest muscles and lungs. The condemned would therefore have to draw himself up by the arms, leading to exhaustion, or have his feet supported by tying or by a wood block. When no longer able to lift himself, the condemned would die within a few minutes. Some scholars, including Frederick Zugibe, posit other causes of death. Zugibe suspended test subjects with their arms at 60° to 70° from the vertical. The test subjects had no difficulty breathing during experiments, but did suffer rapidly increasing pain, which is consistent with the Roman use of crucifixion to achieve a prolonged, agonizing death. However, Zugibe's positioning of the test subjects' feet is not supported by any archaeological or historical evidence. Survival Since death does not follow immediately on crucifixion, survival after a short period of crucifixion is possible, as in the case of those who choose each year as a devotional practice to be non-lethally crucified. There is an ancient record of one person who survived a crucifixion that was intended to be lethal, but was interrupted. Josephus recounts: "I saw many captives crucified, and remembered three of them as my former acquaintances. I was very sorry at this in my mind, and went with tears in my eyes to Titus, and told him of them; so he immediately commanded them to be taken down, and to have the greatest care taken of them, in order to their recovery; yet two of them died under the physician's hands, while the third recovered." Josephus gives no