Introduction: Skiing is a sport that demands the high performance of motor coordination with high energy consumption, factors that strongly influence muscle fatigue. Athletes who experience this phenomenon tend to present a decline in performance, generating psychological irritability and impairment in concentration. Diet is closely related to athletic performance, but the proper prescription for skiing athletes still lacks studies. Objective: To explore the methods of recovery from sports fatigue in skiers by providing up-to-date perspectives for effective nutritional intervention during the recovery stage. Methods: Seven young male skiers were selected as research subjects, and caloric intake, among other conditions, was recorded in detail. After three weeks, indices of body weight, body fat rate, serum metabolism, cardiopulmonary capacity, and energy metabolism, among other relevant information, were duly recorded and compared. Results: The intervention did not significantly impact lean body mass indices (p>0.05). The athletes’ body weight decreased significantly, and the body fat rate decreased significantly after the nutritional intervention; The analyzed biomarkers were positively impacted, except the urea nitrogen concentration that showed a tendency to increase after the nutritional intervention, an effect that may be linked to the proportional increase of protein intake. Conclusion: The proposed nutritional intervention positively impacted the skiers’ energy metabolism, directly impacting the athletes’ recovery from sports fatigue. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
Introduction: Education administrative departments and schools should regard sports as an integral part of school education and allow students to use sports every day. Guarantee the time for sports activities; schools should organize various forms of extracurricular sports activities”. Objective: Based on the ecological system theory, the paper constructs a three-factor structural model that restricts youth sports participation and compiles a scale of factors restricting youth sports participation. Methods: The thesis selected 1,800 primary and secondary school students as the research object and used exploratory factor analysis to explore the questionnaire structure on the obstacles to sports participation. Results: 1) Exploratory factor analysis, the cumulative contribution rate of the first three factors extracted was 58.90%, and the load of each factor was more significant than 0.4. The three factors were school factors, family factors, and personal factors in order; 2) Reselected subjects, Exploring the three-factor structural model of obstacles to sports participation were verified. The final modified model RMSEA was 0.071, CFI was 0.98, and χ2/df was 8.55. The three factors were school factors, family factors, and personal factors. Conclusions: The fit of the three-factor structural indicators restricting youth sports participation is ideal, and the model is relatively stable. The “Questionnaire on Restricting Factors of Youth Sports Participation” can be used as a measurement tool to evaluate and understand youth sports participation constraints. Level of evidence II; Therapeutic studies - investigation of treatment results.
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