BODY COMPOSITION AND PERFORMANCE IN ELITE AND NON-ELITE ADOLESCENT FEMALE RUNNERS OF LITHUANIA

BODY COMPOSITION AND PERFORMANCE IN ELITE AND NON-ELITE ADOLESCENT FEMALE RUNNERS OF LITHUANIA

A.Gailiuniene, A.Muliareikas

Lithuanian Institute of Physical Education,
Kaunas, Lithuania

To identify physical and performance variables that discriminate elite adolescent female runners from non-elite performers, 23 iniciate-juvenile-aged runners were studied (x±SD; age=14,2±1,4 years, body mass=54,2±8,5 kgs, height=160,1±2,3 cm, body fat percentage=15,01±4,8%, VO2max=52,72±6,1 ml·kg-1·min-1).

Elite runners (n=10) were identified as the top 20% of national level competitors. All other runners were classified as non-elite (n=13). The five variables were entered into a step-wise discriminant analysis. These variables were: body mass index (BMI), body fat percentage (%BF), VO2max, ability to run fast (sprint) and blood lactate concentration (BLa).

In this study of 23 elite and non-elite adolescent female runners performed 5 sprints of 30 meters, with 90" of rest between the repetitions. We measured the time spent to run 10 and 30 meters. With the results we made the tables of percentiles for the weight, height and time spent to sprint over the 10 and 30 meter distance.

Table 1

 

Time at 10 m (s)

Time at 30 m (s)

Speed at 10 m·s-1

Speed at 30 m·s-1

Speed last 20 m·s-1

BLa 3 min post run (mM/l)

Elite adol-escent run-ners (n=10)

1,36±0,075

3,85±0,15

7,28±0,36

7,72±0,33

7,95±0,33

6,07±1,40

Non-elite runners (n=13)

1,661±0,101

4,601±0,251

6,055±0,352

6,54±0,412

6,813±0,451

6,26±1,92

The differences in the performance (and also on weight and height) between two adolescent female runners groups were statistic improvement.

The results suggests that the body dimensions and the performance are related and differences between the runners are statistic improvement and there is improvement on the sprint capacity.

Table 2

 

VO2max ml·kg-1·min-1

Body fat, %

R

Elite adolescent female runners (n=10)

56,213±5,9

12,01±1,8

0,349

Non-elite adolescent female runners (n=13)

49,29±6,1

16,0±3,81

0,870

There were significant difference between two groups adolescent female runners in body fat percentage, HRmax, relative VO2max. Linear regression analysis was used to predict VO2max in ml·kg-1·min-1 from fat percentage. Results were as follows:

This study suggests body composition may be a practical predictor of relative VO2max in 14,2±1,4 years old female > 15% body fat, and is generally more accurate then predictions from exercise fields tests. However it is a poorer predictor of relative VO2max and sprint capacity in adolescent female runners
< 15% body fat.


 Home На главную  Forum Обсудить в форуме  Home Translate into english up

При любом использовании данного материала ссылка на первоисточник обязательна!

Gailiuniene, A. Body composition and performance in elite and non-elite adolescent female runners of lithuania / Gailiuniene A., Muliareikas A. // Человек в мире спорта: Новые идеи, технологии, перспективы : Тез. докл. Междунар. конгр. - М., 1998. - Т. 2. - С. 525-526.