Breathe Under
Pressure.
Hyperbaric oxygen therapy floods plasma and tissues with oxygen at elevated atmospheric pressure, switching on the same healing, neuroplasticity, and longevity pathways the NHS uses to recover divers, treat radiation injury, and accelerate wound healing. Hard-shell sessions run from 30 to 90 minutes at our Kelham Urban Spa.
30–90 min
Session Length
Hard shell
Chamber
95%+ O₂
Oxygen Level
40–180
Credits
The Therapy
What Is HBOT?
Hyperbaric Oxygen Therapy is the medical and wellness practice of breathing oxygen-enriched air inside a pressurised chamber. At pressures above sea level, dramatically more oxygen dissolves directly into your blood plasma, bypassing haemoglobin saturation and saturating tissues that ordinary breathing cannot reach.
Originally developed for diving medicine and decompression sickness, HBOT is now NHS-recognised for late radiation tissue injury, diabetic foot wounds, osteoradionecrosis, severe carbon monoxide poisoning, and several other clinical indications. The same mechanisms underpin its use in sports recovery, post-concussion care, longevity protocols, and performance optimisation.
At R1SE Kelham, HBOT currently runs in our hard-shell chamber. Pressure and duration are set by the team based on your goal, experience, and screening answers. The chamber is large enough to sit up, read, listen to music, and rest comfortably while our team monitors the session.
HBOT is not a one-and-done treatment. The structural benefits , stem cell mobilisation, mitochondrial density, telomere lengthening, require repeated exposure across weeks. Our team will help you design a protocol that fits your goal, your schedule, and your starting point.
The Mechanisms
What HBOT Actually Does
Cognitive Function & Neuroplasticity
Plasma-saturated oxygen crosses the blood-brain barrier in volumes that drive neurogenesis, BDNF release, and grey-matter perfusion. Members consistently report sharper focus, faster recall, and lifted mood after a course of sessions.
Stem Cell Mobilisation
A single 90-minute session at 2 ATA can double circulating CD34+ stem cells; 20 sessions can multiply baseline by 8x (Thom et al., 2006, Am J Physiol). The body's own repair signal, switched on systemically.
Inflammation & HIF-1α Switching
HBOT downregulates inflammatory cytokines (TNF-α, IL-1, IL-6) while triggering the hyperoxic-hypoxic paradox, activating hypoxia-inducible factors at higher tissue oxygen levels than ambient hypoxia could ever achieve.
Mitochondrial Density
Repeated pressurised oxygen exposure forces mitochondrial biogenesis, more, healthier mitochondria per cell. The biological substrate of energy, endurance, and longevity.
Tissue Repair & Wound Healing
NHS-recognised for late radiation tissue injury, diabetic foot wounds, osteoradionecrosis. The same mechanisms accelerate sports injury and post-surgical recovery in members without those clinical indications.
Telomere Length & Senescence
Hachmo et al. (2020, Aging) showed 60 sessions of HBOT lengthened telomeres by up to 38% and reduced senescent cell counts by up to 37% in healthy adults, one of the strongest peer-reviewed longevity signals from any intervention.
The Physics
Why Pressure Matters
Henry's Law
At elevated pressure, more oxygen dissolves directly into plasma, not bound to haemoglobin. This is how HBOT delivers oxygen to tissues even when red blood cells cannot reach them.
Pressure Units
ATA = Atmospheres Absolute. Sea level is 1 ATA. The team sets your hard-shell chamber pressure to match your protocol, experience, and screening answers.
Plasma Saturation
At 2 ATA breathing 100% O₂, plasma oxygen content rises ~10x baseline. Tissues that would normally rely on capillary delivery saturate by diffusion.
Hyperoxic-Hypoxic Paradox
Repeated pressurised oxygen exposure followed by return to normoxia triggers hypoxia-induced repair pathways, without ever putting tissues into actual hypoxia. The mechanism behind HBOT's stem cell and longevity effects.
Indications
Who Uses HBOT and Why
- Post-concussion and traumatic brain injury recovery
- Long COVID, chronic fatigue, and post-viral malaise
- Sports injury rehabilitation (ligament, tendon, bone)
- Post-surgical healing acceleration
- Cognitive performance and burnout recovery
- Skin healing, anti-ageing, and longevity stacks
- Sleep quality and HRV recovery
- Migraine and chronic headache management
- Stroke recovery (always under medical guidance)
- Late radiation tissue injury (NHS-recognised)
Session Options
Choose Your Protocol
We currently offer hard-shell HBOT only. The team confirms the right pressure and duration before your appointment.
Intro Hard Shell
Best for first-timers, nervous members, and anyone who wants to experience the hard-shell chamber before booking a longer protocol.
Hard Shell
Our most-booked option. The sweet spot for athletic recovery, post-training stacking, and brain performance work.
Extended Hard Shell
Maximum-protocol session for clinical-grade recovery, post-injury, post-surgical, or longevity-focused stacks. Discuss with the team before booking.
Booking note
HBOT is not currently exposed as a live bookable appointment through WellnessLiving, so requests go straight to the team for screening and confirmation.
Protocols
Worked-Out Protocol Stacks
These are starting frameworks, not prescriptions, we will tailor frequency, pressure, and stacking to you.
Concussion / TBI Stack
20–40 sessions at 1.5 ATA, 5x weekly window. Add Red Light pre-HBOT for additional cellular ATP support. Track HRV and sleep weekly.
Long COVID Stack
30 sessions at 1.5–2.0 ATA over 8–12 weeks. Pair with light yoga and avoid post-exertional flares. Members frequently report a step-change at sessions 12–18.
Athletic Recovery Stack
60-min sessions 1–2x weekly during heavy training blocks. Schedule within 24 hours of high-load workouts for the strongest signal.
Longevity Stack
60 sessions at 2.0 ATA over ~3 months replicates the Hachmo telomere protocol. Combine with Red Light Therapy 2x weekly and our other recovery services.
Watch: The Science Behind HBOT
What to Expect in Your First Session
- 1. Brief & screen , we run through the safety checklist, confirm contraindications are clear, and answer any first-time questions.
- 2. Settle in , you enter the chamber, get comfortable with a book, music, or a podcast. Phones are allowed; the chamber has ports for charging cables and headphones.
- 3. Pressurisation , the chamber pressurises gradually over 5–10 minutes. You will feel ear pressure similar to a plane descent. Equalise by yawning, swallowing, or pinching your nose and gently exhaling.
- 4. At pressure , breathe normally through the oxygen concentrator for the duration of your session. Many members fall asleep. Our team is always within reach via the chamber intercom.
- 5. Depressurisation & exit , another gentle 5–10 minutes back to ambient pressure. Most members report feeling clear-headed and calm immediately. Sleep that night is often the first noticeable benefit.
Safety
Who Shouldn't Use HBOT (Without Sign-Off)
The following conditions require medical sign-off before we book a session, or in some cases preclude HBOT entirely. If any apply, contact the team before booking.
- Active untreated pneumothorax
- Severe COPD (must be screened)
- Recent ear or sinus surgery (under 6 weeks)
- Uncontrolled epilepsy or seizure disorder
- Active chemotherapy (discuss with oncology team)
- Pregnancy (case-by-case with medical sign-off)
Frequently Asked Questions
Elevate Your Recovery
Book a session, request a protocol consultation, or stack HBOT with the rest of our recovery suite at Kelham Urban Spa.