Impact of walking speed and slope of the ground on axial force of poles in nordic walking

Abstract

Background: Nordic walking (NW), due to its attractiveness and convenience of equipment, is becoming more popular and utilised in the areas of sports, recreation and physiotherapy. Some of its impacts on load to the body have not yet been sufficiently explored. Objective: The objective of the study was to determine the impact of walking speed and slope of the ground on the magnitude of axial forces, transferred to the poles by upper extremities during NW. Methods: The study was participated in by 17 healthy subjects, aged 25.9 ± 3.6 years, who went through 12 independent measurements on a treadmill in various speeds (6.0; 6.6; 7.2 and 7.8 km · h-1) and slopes (0; 5 and 7.5%). These measurements provided us with values of basic spatiotemporal variables, characterizing NW performance and force variables, acting on the poles. Results: Increased walking speed led to increase in cycle frequency (p