Influence of a nine-day alpine ski training programme on the postural stability of people with different levels of skills

Abstract

Summary Study aim: In alpine skiing, balance is one of the key elements that determine the effectiveness of the ride. Because of ski boots, the foot and ankle joint complex is excluded from the process of maintaining the stability of the body. The aim of the study was to determine to what extent a few days of skiing activities and the level of technical skills affect the skiers’ level of postural stability. Material and methods: The study involved 10 beginner (20.7 ± 1.1 years, 76.4 ± 8.7 kg, 184.4 ± 6.1 cm) and 10 advanced (20.5 ± 0.5 years, 80.5 ± 13.7 kg, 184.5 ± 9.5 cm) skiers, who participated in a nine-day ski training camp. Measurements of the postural stability were taken on the first and last days of the camp, on an AccuSway (AMTI, USA) stabilometric platform. Results: In both groups, a significant (p < 0.05) improvement in stability was observed after the training camp only while standing in ski boots. While standing on two feet, the participants were more stable barefoot (p < 0.05), and when standing on one foot they were more stable in the ski boot trial (p < 0.05). Conclusions: Skiing had a positive effect on the postural stability only in measurement conditions that were similar to those in which this stability was practiced, i.e. in measurements involving ski boots. The restriction of mobility within the ankle joint significantly influenced the training-induced changes in the postural stability of both beginner and advanced alpine skiers.