Vol. 4, No 2, 2006 pp. 81 - 92
UDC 612: -053.6
Scientific Paper
PREDICTION AND COMPARISON OF MAXIMUM O2 PULSE
IN MALE ADOLESCENTS
Asghar Abbasi1, Bakhtiar Tartibian2
Dept of Physical Education and Sport Science, Faculty of Humanities, Urmia University, Urmieh, Iran
1E-mail: abbasi_ur@yahoo.com
2E-mail: babak_hady@yahoo.com
Abstract. The oxygen pulse as an indicator of O2 transport in the circulatory system has recently been subjected to study and clinical investigations, and not much information has been reported about this cardiovascular variable. The purpose of this study has been the prediction and comparison of maximal O2 pulse in male adolescents. For this purpose, 60 adolescents with a mean (S.D) of age, weight and height of 16 ą 0.81 years, 59.92 ą 10.39 kg and 168 ą 8.17 cm respectively, who were sampled randomly, participated in this research. To predict maximal O2 pulse, the subjects performed 4 exercise tests: GXT Treadmill test, PWC 195, PWC 212 ergometer tests and a one mile run test. In order to select the optimum exercise test, the values obtained from 4 exercise tests were compared using the Cooper predictive protocol (criterion protocol). The GXT test, in comparison with the PWC 195, PWC 212 and 1 mile run test, revealed an objective prediction of a maximal O2 pulse (14.40 ml/beat), and did not show any significant difference from the Cooper protocol (P = 0.519). The PWC 195 (P = 0.001), PWC 212 (P = 0.001) and 1 mile run test (P = 0.003) showed significant differences (with regards to overestimation, and underestimation) when analyzed with the Cooper protocol. These results suggest that maximal O2 pulse, as an indicator of cardiopulmonary efficiency, is predicted more objectively by the GXT test than other exercise tests, so that the value of O2 pulse max results obtained from this test is very close to the Cooper standards.
Key words:  maximal O2 pulse, cardiovascular system, exercise tests, adolescents
PREDIKCIJA I POREĐENJE NIVOA KISEONIKA U KRVI
KOD DEČAKA ADOLESCENATA
Nivo kiseonika u krvi kao indikator njegovog transponovanja u krvotok je tek odnedavno postao predmet istraživanja u uslovima vežbanja i kliničkim uslovima, pa stoga i nema dovoljno dostupnih informacija u vezi ove kardiovaskularne varijable. Cilj ove studije je predikcija i poređenje maksimalnog kiseonika u krvi kod dečaka adolescenata. Za ove svrhe koristili smo nasumični uzorak od 60 adolescenata srednjih vrednosti, starostne dobi, kilaže i visine kako sledi: 16 ą 0.81 godina, 59.92 ą 10.39 kg i 168 ą 8.17 cm. Da bi predvideli maksimalni nivo kiseonika u krvi ispitanici su testirani sa četiri testa: GXT-tredmil test, PWC 195, PWC 212 ergometar test i test trčanja jednu milju. Da bi odabrali optimalni test vežbanja dobijene vrednosti nakon četiri vrste testiranja su poređene sa Kuperovim prediktivnim protokolom (P = 0.519), PWC 195 (P = 0.001), PWC 212 (P = 0.001) i testom trčanja jednu milju (P = 0.003) su pokazali značajne razlike (u odnosu na uvećanje ili smanjenje procena) u poređenju sa Kuperovim protokolom. Dobijeni rezultati ukazuju na to da se maksimalni nivo kiseonika u krvi kao pokazatelj kardiopulmonalne efikasnosti može objektivnije predvideti putem GXT testa nego li drugim testovima, tako da vrednosti kiseonika u krvi utvrđene ovim testom jesu veoma slične vrednostima Kuperovog standardnog testa.
Ključne reči: maksimalne vrednosti kiseonika u krvi, kardiovaskularni sistem, testovi vežbanja, adolescenti