Browsing by Author "Puschel, Cristian"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Comparison and migrations of physical activity during covid-19 confinement in Latin American
    (2022) Duran-Aguero, Samuel; Hernandez, Jose; Parra-Soto, Solange; Puschel, Cristian; Zapata, Andres; Cerda, Enrique; Rios, Mauricio
    Purpose: The study aims to characterize the practice and migration of physical activity in active people during the COVID-19 pandemic. Design: Cross-sectional observational study of a Latin American survey. Setting: An online survey in Google Forms format was applied between June and July 2020 through social networks. The survey consisted of general characteristics, characteristics of confinement, and characteristics related to physical activity. Subjects: 2134 people participated (33.6% male, the mean age was 30.7 +/- 9.2 years), 95.2% with higher education, 74% were normal weight, 60.8% in voluntary lockdown, and 39.2% mandatory lockdown. Results: Pre-pandemic men did 217.92 min/week, and women 199.78 min/week; post-pandemic men declined to 168.34 min/week, and women to 176.70 min/week. Men pre-pandemic, had a higher proportion of compliance the WHO recommendation (77.3% vs 64.9% p =0.001). Regarding, physical activity migrations, men decreased in outside activities, team sports and increase in home physical activity, in women decreased in outside activities, team sports and an increased in fitness classes, yoga and home physical activity. Finally, when associating compliance with physical activity during confinement, it is associated with being a woman and with long weeks of confinement. Conclusion: The physically active people, despite the confinements, remain like this in the four countries evaluated; only changes are observed in the type of physical activity and the frequency of weekly sessions, not affecting their physical condition levels according to self-report.
  • No Thumbnail Available
    Item
    Nutritional knowledge questionnaire applied in sport: Initial proposal for the instrument
    (2023) Gonzalez-Fernandez, Felipe; Leiva-Gutierrez, Jose; Jorquera, Carlos; Puschel, Cristian
    Nutritional knowledge plays a fundamental role in the formation of dietary habits and the modulation of eating behaviour. Nutrition and diet are crucial during adolescence, especially for young athletes. The purpose of this research was to analyse the theoretical validity and indices of discrimination and difficulty of the questionnaire on nutritional knowledge applied in sports using item res- ponse theory in youth athletes aged 14 to 19. This instrumental study was conducted in five phases: item generation, expert panel review, pilot testing, application, and final refinement. A total of 261 adolescents aged 14 to 19, who were members of national team and collective disciplines of professional clubs, participated. Difficulty and discrimination indices were determined for each item. Items 1 (0.354) and 2 (0.285) of the before factor, 3 (0.315) and 6 (0.408) of the during factor, 7 (0.354) and 10 (0.408) of the post factor, 3 (0.254) and 9 (0.231) of the hydration factor, and 2 (0.362) and 5 (0.323) of the supplementation factor showed the highest degree of discrimination. The questionnaire on nutritional knowledge applied in sports consists of 30 items divided into five factors, each with six items. The initial questionnaire proposal is a theoretically valid tool and with adequate difficulty and discrimination indices to evaluate nutritional knowledge in young athletes. Its application allows for identifying potential gaps in key knowledge and designing specific educational strategies to address them.