Dominant-non-dominant asymmetry of kicking a stationary and rolling ball in a futsal context

摘要

The aim of this study was to analyse the characteristics of the asymmetries in the dominant and non-dominant limbs when kicking stationary and rolling balls. Ten experienced Brazilian amateur futsal players participated in this study. Each participant performed kicks under two conditions (stationary ball vs. rolling ball) with the dominant and non-dominant limbs (five kicks per condition per limb). We analysed the kicking accuracy, ball and foot velocities, angular joint displacement and velocity. The asymmetry between the dominant and non-dominant limbs was analysed by symmetry index and two-way repeated measures ANOVA. The results did not reveal any interaction between the condition and limb for ball velocity, foot velocity and accuracy. However, kicking with the dominant limb in both kicks showed higher ball velocity (stationary ball: dominant - 24.27 +/- 2.21m center dot s(-1) and non-dominant - 21.62 +/- 2.26m center dot s(-1); rolling ball: dominant - 23.88 +/- 2.71m center dot s(-1) and non-dominant - 21.42 +/- 2.25m center dot s(-1)), foot velocity (stationary ball: dominant - 17.61 +/- 1.87m center dot s(-1) and non-dominant - 15.58 +/- 2.69m center dot s(-1); rolling ball: dominant - 17.25 +/- 2.26m center dot s(-1) and non-dominant - 14.77 +/- 2.35m center dot s(-1)) and accuracy (stationary ball: dominant - 1.17 +/- 0.84m and non-dominant - 1.56 +/- 1.30m; rolling ball: dominant - 1.31 +/- 0.91m and non-dominant - 1.97 +/- 1.44m). In addition, the angular joint adjustments were dependent on the limb in both kicks (the kicks with non-dominant limb showed lower hip external rotation than the kicks with the dominant limb), indicating that the hip joint is important in kick performance. In conclusion, the kicks with the non-dominant limb showed different angular adjustments in comparison to kicks with the dominant limb. In addition, kicking a rolling ball with the non-dominant limb showed higher asymmetry for accuracy, indicating that complex kicks are more asymmetric.