engleski

Effects of unilateral strength training on balance performance

Objective: The purpose of this study was to determine if 4-week of unilateral isokinetic strength training (concentrically concentric contractions) program would improve trained single limb stability in young physically active women. Background: It is well known that there is positive correlation between balance and strength of low extremities (Horlings et al., 2008 ; Pijnappels et al., 2008). It has been proved that neuromuscular training positively affects balance of ankles, with no records of injuries, that is, ankles with functional instability (Sekir et al. 2007 ; Paterno et al. 2004). However, there is limited information available which quantifies improvement of postural stability following unilateral isokinetic con-con training in a young healthy physically active women. Methods and Measures: Thirty healthy physically active women, students of kinesiology, participated in this study. Single limb postural stability of trained nondominant leg was assessed with a Biodex Stability System. The unilateral isokinetic con- con training program consisted of three training per week for four weeks. Following the completion of the training program, each subject was re- evaluated to determine change in total, Anterior- Posterior, and Medio-Lateral single limb stability. We hypothesized unilateral isokinetic strength training would result in an improvement in postural stability. T-test and ANOVA were used to determine differences between pretraining and posttraining unilateral balance. Results: The subjects showed a significant improvement in all three measure of single-limb stability (OSI: F=12, 22 ; p=0.001 ; APSI: F=20, 93 ; p=0.000 MLSI: F=26, 41 ; p=0.000). Conclusions: A 4-week of unilateral isokinetic strength training (con-con contractions) program improve statistically significant single limb stability of trained leg in all three measure of single-limb stability in young physically active women.

Unilateral isokinetic strength training; balance; physically active women.

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