NATURAL SCIENCES

Journal of fundamental
and
applied researches

Changes of heart rate and oxygen saturation of blood in conditionsof breath-holding functional tests and physical exercise in teenagers with different training levels

2013. 2, pp. 131-140

Kuryanova Yevgeniya V.  - Ph.D. (Biology), Associate Professor, Astrakhan State University, 1 Schaumyan Sq., Astrakhan, 414000, Russian Federation, fyzevk@rambler.ru

Mikhail Yu. Sklabinsky - graduate student, Astrakhan State University, 1 Schaumyan Sq., Astrakhan, 414000, Russian Federation, sklabinskii.miha@mail.ru

The features of changes of heart rate (HR) and blood oxygen saturation degree (Sp2 %) in 12-14-year-old teenagers with different training levels have been studied. The research has been made with application of pulse oxymetry method in conditions of breath-holding functional tests (Genchi?s test, Stange?s test and test with hyperventilation), short-term physical exercise (Martine?s test) and their combinations. The exercised teenagers, in comparison with the unexercised ones, at rest have HR on 12 % (p?0,01) lower. Moreover, the tachycardia at Martine?s test is weaker on 11,3 % (p?0,01). Hoverer teenagers of both groups have practically identical Sp2% (9899 %). In conditions of breath-holding tests the unexercised teenagers show the breath-delay from 152 second (Genchi?s test) up to 501 second (Stange?s test). In addition HR increases on 5012 % (?0,001) and Sp2 % decreases on 21 % (?0,001) accordingly. The exercised teenagers show a longer breath-delay (?0,001), a weaker tachycardia (?0,001) and a more stable Sp2% is stable. Breath-holding before the physical exercise test causes HR increases only in case of the exercised teenagers, probably, playing a role of "prestart". Thus, inspections with application of pulse oxymetry method and functional tests enable to differentiate exercised teenagers from unexercised ones through economizing of cardiovascular system functioning and mobilization, the organism sustainability to sharp hypoxia.

Key words: cardiorespiratory system,pulse oxymetry,heart rate,oxygen saturation of blood,breath-holding tests,test on a physical loading,physical training,teenagers

Read