Kineziologija, Vol. 23. No. 1.-2., 1991.
Izvorni znanstveni članak
An attempt to elect indicators for evaluation of achievement of young cross-country skiers
Anton Ušaj
; Fakultet za šport, Ljubljana, Slovenija
Sažetak
The results-country skiing competition, involving a group of 15 boys between 13 and 15 years of age, have been analyzed on the basis of a battery of athletic tests. The results of the cross-country skiing competition were used as a criterion for selecting the best combination of predictors, which explained a greater part of criterion variance. The best predictors used are: top speed in the 20-m athletic race (v20), speed in the 300-m athletic race (v300), lactate concentration in blood after the 300-m race (LA300) and running speed in the Cooper test (vCoop). This combination, represented by the regression equation for theoretical competition results:
R = 297,3 * v20 - 215.7 * v300 - 303.5 * vCoop -48.8 * LA300 + 1898.4
accounts for 71 % of variance in the results achieved by young skiers in the 4 - km race. It shows that such a race is, first of all, a test f endurance characterized by predominantly aerobic energy processes. It is also a test of speed endurance involving anaerobic lactate energy processes, This has been proved by lactate concentration, measuring an average of 10.8 mmol/l (SD = 2. 4) after the race. The regression model can be used in practice to evaluate the performance of young cross-country skiers throught the season, particularly during the first stages of training,
Ključne riječi
cross-country skiing; regression model; young cross-country skiers; evaluation of results
Hrčak ID:
257214
URI
Datum izdavanja:
4.6.1991.
Posjeta: 543 *