Effect of CO2 and H2 gas mixture in cold water immersion on recovery after eccentric loading.
Miho Yoshimura, Masatoshi Nakamura, Kazuki Kasahara, Riku Yoshida, Yuta Murakami, Tatsuya Hojo, Goichi Inoue, Naohisa Makihira, Yoshiyuki Fukuoka · Heliyon · 2023
Research-use notice
Independent study record
Each H2HUBB study page organizes source-linked research details for educational use. Interpretation should remain proportional to the study design, population, controls, and limitations.
H2HUBB TAKEAWAY
In 34 healthy participants, CO₂/H₂ cold-water immersion helped preserve isometric strength, countermovement-jump height, and range of motion after eccentric exercise compared with the other recovery conditions. Muscle soreness increased after exercise in every group, indicating that the recovery effect did not extend to every measured outcome. These findings add human evidence supporting molecular hydrogen's therapeutic potential to influence exercise performance and recovery in healthy adults.
What the Findings Mean
H2HUBB reviewed how hydrogen-containing cold-water immersion affected the outcomes measured in 34 healthy participants. CO₂/H₂ cold-water immersion helped preserve isometric strength, countermovement-jump height, and range of motion after eccentric exercise compared with the other recovery conditions. Muscle soreness increased after exercise in every group, indicating that the recovery effect did not extend to every measured outcome.
What the Researchers Studied
The researchers studied 34 healthy participants. The study used a randomized human clinical trial. The comparison condition was control condition or baseline measurements.
What Effects Did Molecular Hydrogen Have?
They were randomly allocated into four groups: control, CWI, CO₂-rich CWI (C-CWI), and CO₂ + H₂ gas mixture CWI (CH-CWI). CO₂/H₂ cold-water immersion helped preserve isometric strength, countermovement-jump height, and range of motion after eccentric exercise compared with the other recovery conditions. Muscle soreness increased after exercise in every group, indicating that the recovery effect did not extend to every measured outcome. The authors concluded that cH-CWI stimulated recovery from impairments in MVC-ISO torque, CMJ height, knee-flexion ROM, tissue hardness, and echo intensity.
Why These Findings Matter
These findings add human evidence supporting molecular hydrogen's therapeutic potential to influence exercise performance and recovery in healthy adults and contribute to the growing body of molecular-hydrogen research.
How Strong Is This Evidence?
This is human clinical evidence from a randomized human clinical trial. H2HUBB interprets the findings in the context of the study design, sample, comparator, and measured outcomes rather than using one publication as a verdict on hydrogen therapy.
Technical Study Details
H2HUBB classifies this publication as human clinical study with human clinical evidence. The research population or model was 34 healthy participants. The reported sample size was 4. The study used a randomized human clinical trial. The hydrogen delivery method was hydrogen-containing cold-water immersion.
Limitations and Safety
No separate limitations or safety findings were identified in the source text available to H2HUBB.
Original Study and H2HUBB Research Context
H2HUBB presents this source-grounded research record as one contribution to the broader molecular-hydrogen evidence base.