Mechanical energy and propulsion mechanics in roller-skiing double-poling at increasing speeds.

ABSTRACT:

Objectives

The aim of this study was to examine the effect of speed on mechanical energy fluctuations and propulsion mechanics in the double-poling (DP) technique of cross-country skiing.

Methods

Kinematics and dynamics were acquired while fourteen male skiers performed roller-skiing DP on a treadmill at increasing speeds (15, 21 and 27 km∙h-1). Kinetic (Ekin), potential (Epot), and total (Ebody) body mechanical energy and pole power (Ppole) were calculated. Inverse dynamics was used to calculate arm power (Parm). Trunk+leg power (PT+L) was estimated, as was the power associated with body movements perpendicular to goal-direction ([Formula: see text]).

Results

Ekin and Epot fluctuated out-of-phase throughout the cycle, at first sight indicating that pendulum-like beha

SUBMITTER: Danielsen J 

PROVIDER: S-EPMC8318240 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature