Naslov
Allometric Scaling for Endurance Variables in Croatian Army

Autori
Gregov, Cvita

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Medicine & Science in Sports & Exercise 49 (5S) / - , 2017, 627-627

Skup
American College of Sports Medicine, 2017 Annual Meeting

Mjesto i datum
Denver, Colorado, SAD, 30.05.2017. - 03.06.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
veličina tijela ; alometrija ; kondicijska pripremljenost
(body size ; allometry ; physical fitness)

Sažetak
Body mass bias is widely spread among physical performance testing and may confound the results often leading to misinterpretation. Endurance testing is a part of physical performance testing in the army and is generally assessed by running distance time. Two such tests, 2-mile run (2MR) and 300 yards run (300YR), are used to assess soldiers’ endurance. Also, incremental VO2max treadmill test is used as a measure of aerobic capacity. If expressed as a relative value (ratio of VO2max and body mass) or RVO2max it is a good predictor of endurance or long distance running time. Considering that longer distances running time and RVO2max are measures dependent of body mass, it is important to determine how to allow comparisons between subjects independent of their body mass. One practical solution is to determine body mass allometric exponent for distance running time. PURPOSE: To determine experimental body mass allometric exponent (eAE) for endurance variables and if it corresponds to proposed theoretical body mass allometric exponent (tAE) which equals 0.33. METHODS: 572 healthy male army recruits (mean age 29.4y) underwent endurance assessment comprised of a standard endurance testing battery in Croatian Army: 2-mile run (2MR), 300-yards run (300YR) and incremental VO2max treadmill test. Their body mass (BM) was also measured. Relative maximal oxygen uptake (RVO2max) was taken as a measure of endurance since it is a better predictor of long distance running time. A regression technique was applied on the log- transformed data in order to determine the values of the allometric exponent for each particular test. One sample t-test was used to determine statistical differences between average eAE and tAE. RESULTS: Regression analysis yielded BM allometric exponents for 2MR, eAE=0.33 (95%CI=0.23 - 0.43) ; RVO2max, eAE=-0.47 (95%CI= -0.55 - (-0.38)) ; 300YR, eAE=0.22 (95%CI=0.15 - 0.28). Mean eAE =0.34 and compared with tAE=0.33 was not significantly different (p>0.05) when tested by one sample t-test. CONCLUSION: The results indicate that experimentally derived mean AE for endurance variables correspond to theoretical one and as such should be used for scaling endurance variables and comparing results of endurance tests recorded as running times. Supported by Grant of Ministry of Defence of the Republic of Croatia

Izvorni jezik
Engleski

Znanstvena područja
Kineziologija

POVEZANOST RADA