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CHANGES OF RESPIRATORY EXCHANGE RATIO IN CHILDREN AND ADOLESCENTS: A LONGITUDINAL STUDY

Željko Jeleč ; General Hospital "Dr. Ivo Pedišić", Sisak, Croatia
Branka R Matković ; Faculty of Kinesiology, University of Zagreb, Zagreb, Croatia
Ana Lebo ; PLIVA Croatia Ltd, Croatia
Dražen Jeleč ; Roche d.o.o., Zagreb, Croatia
Andro Matković ; Health Center Zagreb - Cener, Croatia

Puni tekst: engleski, pdf (247 KB) str. 575-582 preuzimanja: 256* citiraj
APA 6th Edition
Jeleč, Ž., Matković, B.R., Lebo, A., Jeleč, D. i Matković, A. (2015). CHANGES OF RESPIRATORY EXCHANGE RATIO IN CHILDREN AND ADOLESCENTS: A LONGITUDINAL STUDY. Collegium antropologicum, 39 (3), 575-582. Preuzeto s https://hrcak.srce.hr/166259
MLA 8th Edition
Jeleč, Željko, et al. "CHANGES OF RESPIRATORY EXCHANGE RATIO IN CHILDREN AND ADOLESCENTS: A LONGITUDINAL STUDY." Collegium antropologicum, vol. 39, br. 3, 2015, str. 575-582. https://hrcak.srce.hr/166259. Citirano 22.09.2019.
Chicago 17th Edition
Jeleč, Željko, Branka R Matković, Ana Lebo, Dražen Jeleč i Andro Matković. "CHANGES OF RESPIRATORY EXCHANGE RATIO IN CHILDREN AND ADOLESCENTS: A LONGITUDINAL STUDY." Collegium antropologicum 39, br. 3 (2015): 575-582. https://hrcak.srce.hr/166259
Harvard
Jeleč, Ž., et al. (2015). 'CHANGES OF RESPIRATORY EXCHANGE RATIO IN CHILDREN AND ADOLESCENTS: A LONGITUDINAL STUDY', Collegium antropologicum, 39(3), str. 575-582. Preuzeto s: https://hrcak.srce.hr/166259 (Datum pristupa: 22.09.2019.)
Vancouver
Jeleč Ž, Matković BR, Lebo A, Jeleč D, Matković A. CHANGES OF RESPIRATORY EXCHANGE RATIO IN CHILDREN AND ADOLESCENTS: A LONGITUDINAL STUDY. Collegium antropologicum [Internet]. 2015 [pristupljeno 22.09.2019.];39(3):575-582. Dostupno na: https://hrcak.srce.hr/166259
IEEE
Ž. Jeleč, B.R. Matković, A. Lebo, D. Jeleč i A. Matković, "CHANGES OF RESPIRATORY EXCHANGE RATIO IN CHILDREN AND ADOLESCENTS: A LONGITUDINAL STUDY", Collegium antropologicum, vol.39, br. 3, str. 575-582, 2015. [Online]. Dostupno na: https://hrcak.srce.hr/166259. [Citirano: 22.09.2019.]

Sažetak
We conducted a longitudinal study to examine changes in the respiratory exchange ratio (RER) during progressively increasing body exertion in children and adolescents of female sex. In this analysis we only included 23 examinees for whom we had all yearly measurements from examinee's age 9 years until 18 years of age.

The data were analyzed according to the chronological and biological age. According to both criteria, the highest RER values were recorded at moments of maximum exertion and they did not increase with age. We found the highest RER values were in the year of the menarche.

We interpret these results as related to the effect of estrogen. The beginning of sexual development involves a gradual increase in estrogen plasma concentrations. At one point serum levels of estrogen reach a level high enough to allow for maximum RER values, i.e. causing the optimium anaerobic capacity of the examinee. this threshold estrogen value varies between individuals.

Ključne riječi
children; respiratory exchange ratio; substrate utilization

Hrčak ID: 166259

URI
https://hrcak.srce.hr/166259

Posjeta: 395 *