Skiing, as a popular and exciting sport and recreational activity, has attracted a large number of enthusiasts. This sport plays a vital role in maintaining the biomechanical function of the lower limbs and determines the primary displacement during skiing. Despite the widespread movement involved, skiing competitions come with a high risk of injury, especially to the lower limbs. A detailed examination of parameters such as Center of Pressure (COP), foot pressure distribution, and Vertical Ground Reaction Force (vGRF) can have significant effects in preventing injuries resulting from pressure distribution in this sport. The aim of this study is to compare these parameters between elite male and female alpine skiers.

Methodology:
This research employed a semi-experimental, cross-sectional practical approach with 26 participants divided into two equal groups of men and women. Using Gpower software, the sample size was determined from the target population. The experiment was conducted over two consecutive days at the Darband Ski Club, utilizing the emed c50 platform to measure COP and vGRF. Successful repetitions were analyzed using the Multi-Mask software, focusing on the foot area. Descriptive statistics, including mean and standard deviation, were used to describe the data, and the data distribution was examined using the Shapiro-Wilk test. Finally, independent t-tests in SPSS were used to compare the results between the two groups.

Results:
In the center of pressure parameter, only the speed and time of center of pressure displacement for the male group were significantly higher than those for the female group. vGRF analysis in various parts of the foot indicates that in the parameter of the inner edge of the heel, men have a significantly higher average vGRF. (P < 0.049) Also, in the average force of the outer part of the midfoot, vGRF in men is significantly higher than in women. (P < 0.001) In the vertical force of the second metatarsal, men have a higher average vGRF compared to women, and this difference is also significant (P < 0.005). Furthermore, in the vertical force of the second toe, men have a higher average vGRF, and this difference is also significant (P < 0.011).

Conclusion:
Skiing, as a high-risk and challenging activity with extensive movement and high speed, puts the lower limbs to the test. The gender effects on vGRF, especially COP during movement, are observable. These effects may arise from structural differences in the foot between men and women or different behaviors in the speed of step-taking and foot placement on the ground. The results of this study demonstrate that the gender impact should be seriously considered in the assessment of walking and the performance of skiers. This information can be utilized in developing training programs and preventing injuries in this sport.