Changes related to fatigue in cardiorespiratory response sensitivity to hypoxic and hypercapnic stimulation during strenuous physical load

• Autorzy: Mishchenko V. , Suchanowski A. , Lysenko O.
• Języki publikacji: EN

Abstrakty

EN

 Response sensitivity to hypoxic and hypercapnic stimuli was analyzed in a group of high performance rowers (n=12) aged 18-22 years during exercising on "Concept-II" rowing ergometer. Two types of loads were used: sustained intensive load at high oxygen consumption (78-83% of VO2max) and relatively easier load (49-62% of VO2max) performed within 5 minutes. The method of rebreathing was used to determine responses sensitivity to CO2. The results showed an increase in respiratory response sensitivity to hypoxia and a decrease in sensitivity to acidosis stimulus of respiration (CO2-H+) at the end of a strenuous load in presence of fatigue. Ventilatory response to hypoxic stimulus increased reliably before the end of work. At high intensity of loads during increment hypercapnia even in highly trained athletes the inhibition of ventilatory response has been noted The data provide additional grounds for correction of fatigue by means of regulating the character and the intensity of physical loads in the process of endurance training. It has been shown that changes in sensitivity of CRS responses and other aspects of reactive features are of importance for special work capacity manifestations.

• Wydawca: -
• Czasopismo: Baltic Journal of Health and Physical Activity. The Journal of Gdansk University of Physical Education and Sport
• Rocznik: 2009
• Tom: 01
• Numer: 1
• Opis fizyczny: p.27-32,ref.

Twórcy

autor

Mishchenko V.

• Jedrzej Sniadecki Academy of Physical Education and Sport in Gdansk, Gdansk, Poland

autor

Suchanowski A.

• Jedrzej Sniadecki Academy of Physical Education and Sport in Gdansk, Gdansk, Poland

autor

Lysenko O.

• National University of Physical Education, Kiev, Ukraine

Bibliografia

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Identyfikatory

DOI

10.2478/v10131-009-0003-z