SEASONAL VARIABILITY OF INDICATORS OF PHYSICAL PERFORMANCE AND OXYGEN TRANSPORT SYSTEM OF THE BLOOD AMONG ATHLETES OF THE MIDDLE OB REGION, SPECIALIZING IN CYCLIC WINTER SPORTS

2020 ◽  
Vol 21 (2) ◽  
pp. 56-61
Author(s):  
A.V. RUTKOVSKIY ◽  
◽  
AN. P. KOYNOSOV ◽  
G.G. DURYGINA ◽  
◽  
...  
Keyword(s):  
Physical Performance ◽  
Transport System ◽  
Oxygen Transport ◽  
Seasonal Variability ◽  
Winter Sports ◽  
Oxygen Transport System

scholarly journals SEASONAL DYNAMICS OF ENDOCRINE REGULATION OF METABOLIC RATE, BLOOD OXYGEN TRANSPORT SYSTEM AND PHYSICAL PERFORMANCE OF MIDDLE OB REGION ATHLETES FROM CYCLIC WINTER SPORTS

2020 ◽  
Vol 20 (3) ◽  
pp. 41-50
Author(s):  
A Rutkovskiy ◽  
An Koynosov ◽  
A Gubina
Keyword(s):  
Red Blood Cells ◽  
Physical Performance ◽  
Transport System ◽  
Oxygen Transport ◽  
Blood Cells ◽  
Physical Work ◽  
Physical Work Capacity ◽  
Endocrine Regulation ◽  
Blood Oxygen ◽  
Oxygen Transport System

Aim. The paper aims to study the seasonal dynamics of endocrine regulation of metabolic rate, blood oxygen transport system and physical performance of Middle Ob region athletes from cyclic winter sports. Materials and methods. A comprehensive two-stage study of the endocrine system, blood oxygen transport system and physical performance was carried out among elite cross country skiers and biathletes aged from 15 to 18 years during the periods of the year with pronounced daylight variability. The research methods included enzyme-linked immunoassay (ELISA) with the measurements of total triiodothyronine, total thyroxine, thyroid-stimulating hormone, total testosterone and growth hormone; analysis of peripheral blood with the measurements of red blood cells, hemoglobin, hematocrit and red blood cell indices; cardiopulmonary exercise testing with ergospirometry and assessment of maximum oxygen consumption, physical work capacity, oxygen pulse and anaerobic threshold. Results. Statistical analysis revealed significant (p < 0.05) seasonal changes in the endocrine system, blood oxygen transport system and physical performance of Middle Ob region athletes. Namely, during the short daylight period there was a significant increase in total triiodothyronine and cortisol, a decrease in total testosterone, red blood cells, hemoglobin, hematocrit and the average volume of red blood cells, an increase in absolute and relative values of maximum oxygen consumption, oxygen pulse, physical work capacity and a decrease in anaerobic threshold. Conclusion. The results of the research characterize the features of athletes’ adaptation to specific climatic factors of the Northern region against the background of intense physical exertion.

scholarly journals Organization of blood oxygen transport system for cottoid fishes of Lake Baikal

2020 ◽  
pp. 826-827
Author(s):  
V. Yakhnenko ◽  
◽  
I. Klimenkov ◽  
N. Sudakov ◽  
S. Kirilchik ◽  
...  
Keyword(s):  
Transport System ◽  
Lake Baikal ◽  
Oxygen Transport ◽  
Blood Oxygen ◽  
Cottoid Fishes ◽  
Oxygen Transport System

The Oxygen Transport System in Trout (Salmo Gairdneri) During Sustained Exercise

1977 ◽  
Vol 69 (1) ◽  
pp. 247-260 ◽  
Author(s):  
JOE W. KICENIUK ◽  
DAVID R. JONES
Keyword(s):  
Transport System ◽  
Oxygen Transport ◽  
Swimming Speed ◽  
Venous Pressure ◽  
Salmo Gairdneri ◽  
Water Tunnel ◽  
Direct Proportion ◽  
Central Venous ◽  
Blood Pressures ◽  
Oxygen Transport System

1. The capabilities of the oxygen transport system of rainbow trout in supplying the increased oxygen demands in exercise, in a water tunnel at 9–10.5 °C, have been investigated by increasing the velocity of water flow, with a 1 h period between increments, up to the maximum swimming speed (critical velocity, Ucrit). 2. At Ucrit, NO2 was elevated above the resting level by 7.5 times. The logarithm of NOO2 was linearly related to the swimming speed expressed as a proportion of Ucrit. Vg increased in almost direct proportion to the increase in NOO2. 3. Heart rate rose slightly at half Ucrit and reached a maximum, 1.6 times the resting rate, as Ucrit was approached. Ventral and dorsal aortic mean blood pressures rose by 60% and 20% respectively at Ucrit while their pulse pressures doubled. Central venous pressure was virtually unchanged. 4. P a, Oa, O2 fell slightly during exercise but Ca, Oa, O2 was unaffected. On the other hand Pv, Ov, O2 halved and Cv, Ov, O2 fell from 3.17 (S.E. = 0.3) to 0.6(S.E. = 0.7) mmol/1. Cardiac output increased by about 3 times resting values. 5. The results are discussed and an attempt is made to estimate the maximum capabilities of the components of the oxygen transport system in sustained exercise.

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