Comparison of Knee Flexion Angles for Maintaining Dynamic Balance on Negative Slopes: A Guide for Improving Postural Stability in Mountain Climbing and Downhill Walking

Abstract

Objective

The purpose of this study was to compare the dynamic balance at different knee flexion angles (maximal knee flexion angles of 30° and 45°) on a 20% negative slope.

Methods

In an observational cross-sectional study, 19 healthy male participants performed a modified Star Excursion Balance Test on a 20% negative slope, whereas the left standing knee was restricted by a knee brace in a maximum of 30° or 45° flexion.

Results

The balance scores were significantly better in 45° knee flexion compared with 30° flexion in the composite reach and also in the percentage of reach in any of the test directions.

Conclusion

On a 20% negative slope, 45° knee flexion resulted in better dynamic balance than 30° knee flexion.