This study aimed to analyze and compare the hip, knee, and elbow joint movements during the double poling (DP) technique in cross-country skiing using a wearable inertial measurement unit (IMU) sensor on a real snow skiing track. Six national players (NP) and five college players (CP) participated in this study. The joints angles were calculated using the data from IMU sensors on a 145 m skiing course with 10° slope using the DP technique. In addition, the parameters of the DP phase were estimated. Then, all parameters were compared between the NP and CP groups. The hip and knee joint angles in the NP groups were significantly larger than the CP groups. However, there was no intergroup difference in elbow joint range of motion (ROM). Moreover, the cycle length and cycle velocity was higher in the NP group than the CP group. The results showed that the NP group had higher speed and longer cycle length with greater flexion angles in the hip and knee joints. The wearable IMU sensor was used to analyze the motions during DP skiing on the snow skiing slope, which can provide more realistic detailed analysis of the skiing movements. This study provides the comparison analysis of the main parameters between the two different skilled skiers groups, which may help coaches and players improve skiing performance.

这项研究旨在分析和比较越野滑雪中双极化（DP）技术期间在真实的滑雪道上使用可穿戴惯性测量单元（IMU）传感器进行的髋，膝和肘关节运动。六个国家的运动员（NP）和五个大学的运动员（CP）参加了这项研究。使用DP技术，使用IMU传感器在145 m滑雪路线上以10°坡度计算出的关节角度。另外，估计了DP阶段的参数。然后，比较NP组和CP组之间的所有参数。NP组的髋关节和膝关节角度明显大于CP组。但是，肘关节运动范围（ROM）没有组间差异。此外，NP组的循环长度和循环速度高于CP组。结果表明，NP组髋关节和膝关节的速度较高，周期较长，屈曲角度较大。穿戴式IMU传感器用于分析DP滑雪在滑雪坡上的运动，这可以提供对滑雪运动的更实际的详细分析。这项研究提供了两个不同的熟练滑雪者组之间主要参数的比较分析，这可能有助于教练和运动员提高滑雪性能。