Mitochondrial Training

Intermittent Hypoxia-Hyperoxia Training (IHHT)

A controlled breathing therapy that alternates between reduced and elevated oxygen concentrations to stimulate mitochondrial renewal, improve cellular energy production, and enhance overall metabolic function.

Overview

What Is IHHT?

Intermittent Hypoxia-Hyperoxia Training (IHHT) is a non-invasive therapy in which the patient breathes alternating intervals of low-oxygen (hypoxic) and high-oxygen (hyperoxic) air through a face mask while resting comfortably. This simulates aspects of altitude training in a controlled medical setting.

The therapy targets mitochondria — the energy-producing organelles in every cell. Dysfunctional mitochondria, which accumulate with age and chronic illness, are selectively eliminated through a process called mitophagy, while the production of new, healthy mitochondria is stimulated.

IHHT interval hypoxia hyperoxia therapy at St. George Hospital Germany

IHHT Device Image

Mechanism

How Does It Work?

During an IHHT session, the patient breathes through a mask connected to a device that precisely controls oxygen concentration. Hypoxic intervals (9-13% O2) lasting 3-5 minutes alternate with hyperoxic intervals (30-40% O2) of similar duration. This cycle is repeated for 30-40 minutes per session.

The hypoxic stimulus activates hypoxia-inducible factor (HIF) pathways, triggering mitophagy of damaged mitochondria. The subsequent hyperoxic phase promotes mitochondrial biogenesis through PGC-1alpha activation. Over a course of treatments, the net effect is an improvement in the overall quality and efficiency of the cellular mitochondrial population.

Indications

Conditions Treated

Is This Therapy Right for You?

IHHT is prescribed based on metabolic testing results. Our physicians will determine whether this therapy is appropriate for your condition and treatment goals.

Patient Experience

What Does a Session Look Like?

The patient reclines comfortably and breathes through a face mask. The session lasts approximately 40 minutes. Oxygen saturation and heart rate are monitored continuously throughout. The alternating oxygen levels are automatically controlled by the device. Patients typically describe the experience as relaxing — many read or rest during sessions. A course of 10-15 sessions over 2-3 weeks is typical.
Research

Evidence & Safety

Intermittent hypoxia training has been studied in clinical trials for cardiovascular health, metabolic syndrome, and exercise performance. Published research in journals including the European Journal of Applied Physiology and Frontiers in Physiology supports its effects on mitochondrial function and metabolic parameters. The addition of hyperoxic intervals (IHHT vs. IHT alone) is a more recent development with growing clinical evidence. Contraindications include unstable angina, severe COPD, and acute infections.

Learn More About IHHT

Contact our medical team to discuss whether intermittent hypoxia-hyperoxia training may benefit your condition.