Application of Molecular Hydrogen as an Antioxidant in Responses to Ventilatory and Ergogenic Adjustments during Incremental Exercise in Humans.
Ahad Abdulkarim D Alharbi, Naoyuki Ebine, Satoshi Nakae, Tatsuya Hojo, Yoshiyuki Fukuoka · Nutrients · 2021
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 18 healthy, trained participants, the mean values of the ventilatory parameters displayed a significantly lower V ˙ E ( p < 0.05), V ˙ O₂ ( p < 0.01), and V ˙ CO₂ ( p < 0.05) in the HCP group compared to the placebo group. No significant difference in HR or R was observed between the HCP and placebo groups. These findings add human evidence that helps define the outcomes that did and did not change with molecular hydrogen in this study.
What the Findings Mean
H2HUBB reviewed how molecular hydrogen affected the outcomes measured in 18 healthy, trained participants. The mean values of the ventilatory parameters displayed a significantly lower V ˙ E ( p < 0.05), V ˙ O₂ ( p < 0.01), and V ˙ CO₂ ( p < 0.05) in the HCP group compared to the placebo group, whereas no significant difference in HR or R was observed between the HCP and placebo groups.
What the Researchers Studied
The researchers studied 18 healthy, trained participants. The study used a randomized, double-blind, placebo-controlled, crossover human clinical trial. The comparison condition was placebo.
What Effects Did Molecular Hydrogen Have?
In fact, quite the opposite effect was observed, as H₂ -infused water caused metabolic alkalosis, decreased the blood lactate level, and lowered the rate of perceived exertion (RPE) [ 5, 7, 33 ]. Given these findings in animals and humans, there is a possibility that the ROS would be downregulated by the administration of molecular hydrogen and cause hypoventilation and blood hypercapnia. The mean values of the ventilatory parameters displayed a significantly lower V ˙ E ( p < 0.05), V ˙ O₂ ( p < 0.01), and V ˙ CO₂ ( p < 0.05) in the HCP group compared to the placebo group, whereas no significant difference in HR or R was observed between the HCP and placebo groups. The authors concluded that hCP-induced hypoventilation would lead to lower pH and secondarily impaired balance between O₂ delivery and utilization in the local RF during exercise, suggesting that HCP supplementation, which increases the at-rest antioxidant potential, affects the lower ventilation and pH status during incremental exercise.
Why These Findings Matter
This publication adds useful evidence about where molecular hydrogen did and did not change the measured outcomes, helping define the larger therapeutic evidence base.
How Strong Is This Evidence?
This is human clinical evidence from a randomized, double-blind, placebo-controlled, crossover 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 18 healthy, trained participants. The study used a randomized, double-blind, placebo-controlled, crossover human clinical trial.
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.