Orthostatic Hypotension Clinical Trials

Other: Testing position and cooling modality for the ice test

As a spin-off of the main study, we aim to determine which cooling modality and body position elicit the most consistent and stable blood pressure response. To do so, we conduct a supplementary experiment involving 5 individuals with chronic SCI and 5 able-bodied controls. Each participant completes two experimental sessions: one in the supine position and one in the seated position. Within each session, participants undergo two tests, separated by a 30-minute rest period:~1. an ice-water immersion test, in which the foot is submerged in ice water for 3 minutes, and~2. an ice-wrap test, in which ice packs are applied around the foot and ankle for 3 minutes.~The order of body position and cooling modality is pseudo-randomized. Throughout each test, blood pressure is continuously recorded, and participants rate discomfort or pain at 1-minute intervals.

Other: Main study: assessing the BP changes throughout the first year post SCI

The main study recruits 5 individuals with sub-acute SCI and follows them for one year to evaluate how blood pressure responses evolve during the early post-injury period.