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A New Method to Improve Running Economy and Maximal Aerobic Power in Athletes: Endurance Training With Periodic Carbon Monoxide Inhalation
The Belt and Road Joint Laboratory for Winter Sports, Department of Exercise Physiology, Beijing Sport University, Beijing, ChinaBeijing Sport Univ, Dept Exercise Physiol, Belt & Rd Joint Lab Winter Sports, Beijing, Peoples R China..
Department of Physical Education, Shanxi Medical University, Taiyuan, China.
The Belt and Road Joint Laboratory for Winter Sports, Department of Exercise Physiology, Beijing Sport University, Beijing, China.
School of Physical Education, Yan’an University, Yan’an, China.
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2019 (English)In: Frontiers in Physiology, ISSN 1664-042X, E-ISSN 1664-042X, Vol. 10, article id 701Article in journal (Refereed) Published
Abstract [en]

Background: Altitude training stimulates erythropoietin hormone (EPO) release and increases blood hemoglobin (Hb) mass, which may result in improved oxygen (O-2) transport capacity. It was hypothesized in the present study that periodic inhalation of carbon monoxide (CO) might elicit similar physiological adaptations compared to altitude training.

Methods: Twelve male college student athletes, who were well-trained soccer players, participated. They performed a 4-week treadmill-training program, five times a week. Participants were randomly assigned into an experimental group with inhaling CO (INCO) (1 mL/kg body weight for 2 min) in O-2 (4 L) before all training sessions and a control group without inhaling CO (NOCO). CO and EPO concentrations in venous blood were first measured acutely at the 1st, 2nd, 4th, 6th, and 8th hour after INCO, and total hemoglobin mass (tHb), running economy and VO(2)max were measured before and after the 4 weeks training intervention.

Results: HbCO% increased from 0.7 to 4.4% (P < 0.05) after 1 h of CO inhalation and EPO increased from 1.9 to 2.7 mIU/mL after 4 h post CO inhalation (P < 0.05) acutely before the intervention. After the training, the tHb and VO(2)max in the INCO group increased significantly by 3.7 and 2.7%, respectively, while no significant differences were observed in the NOCO condition. O-2 uptake at given submaximal speeds declined by approximately 4% in the INCO group.

Conclusion: Acutely, EPO increased sharply post CO inhalation, peaking at 4 h post inhalation. 4-weeks of training with CO inhalation before exercise sessions improved tHb and VO(2)max as well as running economy, suggesting that moderate CO inhalation could be a new method to improve the endurance performance in athletes. © 2019 Frontiers Media S.A. All Rights Reserved.

Place, publisher, year, edition, pages
Lausanne: Frontiers Media S.A., 2019. Vol. 10, article id 701
Keywords [en]
carbon monoxide, endurance training, EPO, total hemoglobin mass, running economy, maximal aerobic power
National Category
Physiology
Identifiers
URN: urn:nbn:se:hh:diva-41455DOI: 10.3389/fphys.2019.00701ISI: 000471311700001PubMedID: 31244675Scopus ID: 2-s2.0-85069222868OAI: oai:DiVA.org:hh-41455DiVA, id: diva2:1390226
Note

Funders: National Programs for Winter Olympics of Ministry of Science and Technology (2018YFF0300800) and special funds for Basic Scientific Research Services of Chinese Central University (2018GJ006).

Available from: 2020-01-31 Created: 2020-01-31 Last updated: 2020-02-06Bibliographically approved

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