title: Predicting agility performance with other performance variables in pubescent boys: a multiple-regression approach.
abstract: The goal was to investigate the influence of balance, jumping power, reactive-strength, speed, and morphological variables on five different agility performances in early pubescent boys (N = 71). The predictors included body height and mass, countermovement and broad jumps, overall stability index, 5 m sprint, and bilateral side jumps test of reactive strength. Forward stepwise regressions calculated on 36 randomly selected participants explained 47% of the variance in performance of the forward-backward running test, 50% of the 180 degrees turn test, 55% of the 20 yd. shuttle test, 62% of the T-shaped course test, and 44% of the zig-zag test, with the bilateral side jumps as the single best predictor. Regression models were cross-validated using the second half of the sample (n = 35). Correlation between predicted and achieved scores did not provide statistically significant validation statistics for the continuous-movement zig-zag test. Further study is needed to assess other predictors of agility in early pubescent boys.
authors.forename: Damir
authors.initials: D
authors.lastname: Sekulic
authors.forename: Miodrag
authors.initials: M
authors.lastname: Spasic
authors.forename: Michael R
authors.initials: MR
authors.lastname: Esco
mesh_terms: D000293:Adolescent; D002648:Child; D006801:Humans; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D009068:Movement; D015999:Multivariate Analysis; D053580:Muscle Strength; D004856:Postural Balance / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology; D012044:Regression Analysis