Wyniki wyszukiwania - Biblioteka Nauki

1

Changes in ion concentration in the air during the breathing process of a human being

100%

Suchanowski A. , Wiszniewski A.

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nr 4

EN

This work discusses the influence of the human being on concebtrations and mobility of aeroions in the atmosphere. The performed investigations show that the concentration of anions decreases, in the vicinity of the human, on about 26 - 44%. This is the result of their recombination with charges existing in the human body. In the process of breathing there are no crucial changes to the concentration of ions of both polarisation, while there is a conciderable increase, by several hundred percent, in the number of large ions.

2

Specifics of ventilatory and heart rate chemosensitivity related to special endurance capacity in high performance alpinists and endurance athletes

80%

Mishchenko V. , Pavlik A. , Suchanowski A.

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nr 2

EN

The aim was to compare ventilatory and heart rate chemosensitivity to hypoxia and hypercapnia in homogenous groups of high performance alpinists and endurance athletes and its relation to special work endurance.Thirty-two male best national alpinists (30.7±2.7 yrs, VO2max 63.7±1.9 ml. kg-1,min-1, 14.3±2.4 yrs of experience) and 24 high performance male road cyclists of national team (25.7±1.1 yrs, VO2max 74.5±1.5 ml.kg-1,min-1, 11.2±1.4 yrs of experience) were examined by isocapnic progressive hypoxia and CO2 rebreathing tests. Maximal oxygen uptake, lung ventilation and heart rate peak responses were measured in an incremental ergometric test at sea level. Special work capacity of 23 alpinists was evaluated as the best time of non complicated mountain climbing between the point at 3,290 and 4,300 m above the sea level. Special work capacity of cyclists was evaluated as the best time of the individual 50 km race at the sea level.The results showed no significant differences of the hypoxic ventilatory response in groups of alpinists and cyclists (p<0.05) But circulatory response evaluated by response of HR increase in answer to a decrease in O2 arterial blood saturation (SaO2) in alpinists was lower (p<0.05). Results showed that the evaluation of ventilatory and heart rate chemosensitivity in addition to measure of aerobic power may give important information for prevision of specific working capacity of high performance alpinists. Maximal oxygen uptake (ml/kg body mass) of the four best alpinists did not differ from the values of other alpinists. Special work capacity of alpinists was significantly related to tidal volume increase for the hypoxia test (r=-0.60) and to CO2 sensitivity (r=-0.67).The long-term exposure to environmental hypoxia and hypocapnia in alpinists generates specific changes in respiratory control. To evaluate special work capacity potential possibilities in a homogenous group of high performance alpinists first of all heart rate response sensitivity to hypoxia as well ventilatory response sensitivity to CO2had to be taken into account, but only an alpinist's aerobic power.

3

80%

Mishchenko V. , Suchanowski A. , Lysenko O.

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nr 1

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.

4

Effects of air-ions on human circulatory indicators

80%

Wiszniewski A. , Suchanowski A. , Wielgomas B.

Polish Journal of Environmental Studies

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2014

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tom 23

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nr 2

EN

Men and women of different ages were submitted to the activity of negative or positive air-ions several hours a day for from several to more than a dozen days. Shifts in their systolic/diastolic pressures and pulse were determined in the course of these experiments. The tests have shown a statistically significant influence of the ionized particles, above all on blood pressure. Exposing humans with proper circulatory indicators six hours a day for more than a dozen days to negative air-ions in concentrations of 10,000 ions/cm³ results in a 5% drop in systolic pressure and around 2% drop in diastolic pressure, but has no influence on the pulse. This effect works until both pressures reach a stable level, which probably can be considered optimal for a given person. However, exposing people to positive air-ions in concentrations of 25,000 ions/cm³ results in destabilization of the circulatory indicators.

5

Physical working capacity in students of the physical education Academy in Gdansk

80%

Kuziemski H. , Schott I. , Suchanowski A.

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tom 30

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nr 1

6