In cross-country (XC) skiing, double poling (DP) is a widely used skiing technique in which skiers push synchronously two poles to generate propulsion. Cycle parameters as cycle time, push and recovery time, cycle speed, and cycle length play an important role in performance assessment. The use of inertial measurement units (IMUs) to assess cycle parameters have the advantages to require a simple setup and to allow measuring skiing kinematics continuously outside. The aim of the thesis was to identify cycle events (pole hits and lifts) and to calculate cycle parameters by linear acceleration and angular velocity signals collected using IMUs fixed on the skiers, and to assess errors (accuracy and precision) of the results in comparison with a gold standard system.