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  1. Home
  2. Hyperbaric Oxygen
Knowledge Library

Everything you ever wanted
to know about hyperbaric oxygen.

The most comprehensive hyperbaric oxygen resource in the UK. The telomere-lengthening evidence, cognitive data from Tel Aviv University, the difference between 1.3 ATA wellness chambers and hospital-grade 2.0+ ATA, and how to make HBOT a habit. Built and maintained by R1SE Sheffield, home of the Kelham Urban Spa.

+38%

T-cell telomere length increase after 60 sessions

Hachmo et al., Aging 2020 (Tel Aviv University)

−33%

senescent T-cells reduction after 60 sessions

Hachmo et al., Aging 2020

~3×

tissue oxygen delivery at 2.0 ATA

Standard hyperbaric physiology, Boerema 1960

8 / 9

cognitive domains improved in healthy older adults

Hadanny et al., Aging 2020

Full citations and additional outcomes on the Science of HBOT page.

The Library

Pick a topic. Each page is fully cited.

Evidence

The Science of HBOT

Telomere length up 38%. Senescent T-cells down a third. Every claim properly cited — Hachmo, Hadanny, Efrati, Boussi-Gross. Start here.

Read

Applications

Conditions HBOT Treats

Post-concussion. Long COVID. Diabetic ulcers. Fibromyalgia. Stroke recovery. What the evidence supports — and what it doesn't yet.

Read

Start Here

HBOT for Beginners

Never been in a chamber? What to expect, how to equalise your ears, what to wear, and the first three sessions that build the habit.

Read

At R1SE

HBOT at R1SE Sheffield

Our chambers, our protocols, our pricing. What a session at R1SE Kelham looks like, from check-in to first descent.

Read

Outcomes

The Benefits of HBOT

Sleep, cognition, recovery, skin, energy, immunity and longevity. Mechanism, evidence, and the R1SE protocol that targets each.

Read

Practice

How to Use HBOT

Six protocols based on published trials — beginner intro, recovery, cognitive, longevity (Hachmo), post-concussion, long-COVID. Plus the Hadanny air-break technique.

Read

Choose

Mild vs Medical HBOT

1.3 ATA wellness sessions vs hospital-grade 2.0+ ATA. Side by side — mechanism, evidence, who benefits from each.

Read

Safety

HBOT Risks & Contraindications

Ear barotrauma. Untreated pneumothorax. Bleomycin. Medications that need a flag. The honest safety guide.

Read

Comparison

Types of Hyperbaric Chamber

Hard-shell vs soft-shell. Monoplace vs multiplace. Acrylic, steel, walking and home chambers — what each does and what it costs.

Read

Heritage

History of HBOT

From Henshaw's 1662 domicilium to Boerema's “Life Without Blood” to the Tel Aviv revolution. 360 years of evidence.

Read

Influence

Who Uses HBOT and Why

Michael Phelps, LeBron James, Cristiano Ronaldo, Bryan Johnson, Joe Rogan, Justin Bieber, Andrew Huberman, Rhonda Patrick, Hugh Jackman.

Read

Reading is the first step. Pressure does the work.

Book a session in our hyperbaric chamber at R1SE Kelham Urban Spa and put 60 years of evidence into practice.

Book a HBOT SessionStart with the Beginner's Guide

Explore More

The R1SE Knowledge Libraries

Science-backed, fully cited guides to every R1SE modality. Pick a topic and go deeper.

Yoga Library

Science, history, philosophy, poses, breathwork, hot yoga.

Explore

Reformer Pilates Library

Science, history, equipment, moves, benefits, instructor pathways.

Explore

Sauna Library

Cardiovascular science, Finnish vs infrared, protocols, longevity data.

Explore

Red Light & PEMF Library

Collagen, hair regrowth, recovery, PEMF, wavelengths explained.

Explore

Ice Bath & Cold Library

Catecholamines, brown fat, Søberg minimum, Wim Hof, recovery debate.

Explore
R1SE

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Sheffield, UK

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