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MAXIMAL OXYGEN UPTAKE AND MATURATION IN 12-YEAR-OLD MALE ROWERS

Pavle Mikulić
Lana Ružić
Goran Leko

Puni tekst: engleski, pdf (85 KB) str. 10-15 preuzimanja: 691* citiraj
APA 6th Edition
Mikulić, P., Ružić, L. i Leko, G. (2007). MAXIMAL OXYGEN UPTAKE AND MATURATION IN 12-YEAR-OLD MALE ROWERS. Hrvatski športskomedicinski vjesnik, 22 (1), 10-15. Preuzeto s https://hrcak.srce.hr/14319
MLA 8th Edition
Mikulić, Pavle, et al. "MAXIMAL OXYGEN UPTAKE AND MATURATION IN 12-YEAR-OLD MALE ROWERS." Hrvatski športskomedicinski vjesnik, vol. 22, br. 1, 2007, str. 10-15. https://hrcak.srce.hr/14319. Citirano 30.03.2020.
Chicago 17th Edition
Mikulić, Pavle, Lana Ružić i Goran Leko. "MAXIMAL OXYGEN UPTAKE AND MATURATION IN 12-YEAR-OLD MALE ROWERS." Hrvatski športskomedicinski vjesnik 22, br. 1 (2007): 10-15. https://hrcak.srce.hr/14319
Harvard
Mikulić, P., Ružić, L., i Leko, G. (2007). 'MAXIMAL OXYGEN UPTAKE AND MATURATION IN 12-YEAR-OLD MALE ROWERS', Hrvatski športskomedicinski vjesnik, 22(1), str. 10-15. Preuzeto s: https://hrcak.srce.hr/14319 (Datum pristupa: 30.03.2020.)
Vancouver
Mikulić P, Ružić L, Leko G. MAXIMAL OXYGEN UPTAKE AND MATURATION IN 12-YEAR-OLD MALE ROWERS. Hrvatski športskomedicinski vjesnik [Internet]. 2007 [pristupljeno 30.03.2020.];22(1):10-15. Dostupno na: https://hrcak.srce.hr/14319
IEEE
P. Mikulić, L. Ružić i G. Leko, "MAXIMAL OXYGEN UPTAKE AND MATURATION IN 12-YEAR-OLD MALE ROWERS", Hrvatski športskomedicinski vjesnik, vol.22, br. 1, str. 10-15, 2007. [Online]. Dostupno na: https://hrcak.srce.hr/14319. [Citirano: 30.03.2020.]

Sažetak
This study was designed to examine the differences
in VO max between 47 rowers of the same chronological 2
age (12-year-olds; mean ± SD 12,5 ± 0,3), but of varying
levels of physical maturity. VO max was expressed in 2
absolute units (L/min), as the ratio standard mass-related
units (mL/kg/min) and using the allometric model
specific to the data set. Sexual maturity was visually
assessed using indices of pubic hair developed by Tanner.
The subjects were classified in pre-pubertal (Tanner stage
1), early-pubertal (Tanner stage 2), and mid-pubertal
(Tanner stages 3 and 4) groups. They completed an
incremental maximal treadmill test. Differences were
compared using a one-way ANOVA.
VO max (L/min) in 12-year-old rowers proved to be 2
greater in the mid-pubertal group than in both the earlypubertal
(+19,7%) and pre-pubertal (+24,8%) groups.
When expressed as a ratio standard (i.e. in mL/kg/min),
VO max was +12,1% greater in the mid- and pre- 2
pubertals than in the earlypubertals. However, when
compared using the appropriate scaling procedure, the
VO max in mid-pubertal rowers was +14.5% greater than 2
in the early-pubertals, and +9,1% greater than in prepubertals.
This suggests that factors other than body mass
explain the greater aerobic power (as assessed by
VO max) in more physically mature individuals of the 2
same chronological age. Allometric scaling of VO max in 2
the present study yielded a scaling coefficient for body
mass of 0,68 (95% CI = 0,51-0,87). This finding
reinforces the view that, in children, VO max increases 2
relative to body mass raised to the power of 0,67 rather
than in direct proportion with body mass (i.e. mass1,0).
In conclusion, using a log-linear scaling model to
adequately control for body mass, we have demonstrated
significant differences in VO max among 12-year-old 2
rowers of varying stages of puberty and, consequently,
varying levels of maturity. Further research is needed in
order to further explain the above-mentioned differences
among groups of rowers exhibiting differing levels of
maturity independent of body mass.

Ključne riječi
VO2max; physical maturity; young rowers; allometric scaling

Hrčak ID: 14319

URI
https://hrcak.srce.hr/14319

[hrvatski]

Posjeta: 1.500 *