Comparative effects of three different physical education teaching modes on college students' physical fitness during the COVID-19 pandemic: A longitudinal study.

Background: An appropriate teaching mode in physical education is crucial for ensuring effective education outcomes. Given the dynamic nature of the COVID-19 pandemic, teaching modes are often adjusted. However, there is a lack of in-depth research on the impact of different teaching modes on the outcomes of physical education. Our study aims to address this gap by conducting a comparative analysis of the teaching effectiveness of three different physical education modes among Chinese college students, with a focus on evaluating their impact on physical fitness.

Method: This study adopted a longitudinal retrospective observational design. We systematically examined the three stages of the COVID-19 pandemic (stage 1: September 2020 to January 2021; stage 2: September 2021 to January 2022 and stage 3: February 2022 to July 2022), along with the three corresponding physical education teaching modes (classroom teaching, online teaching and blended teaching) and administered three physical fitness tests (T1, T2 and T3). The physical fitness test included 7 indicators: body mass index, vital capacity, 50-m run, standing long jump, sit-and-reach, pull-ups (male), 1000-m run (male), sit-ups (female) and 800-m run (female). A mixed ANOVA model was used to analyse the physical fitness test indicators across the three different teaching modes.

Results: A total of 3363 college students (1616 males and 1747 females) enrolled in 2020 completed the three physical fitness tests. Most students were aged between 17 and 20 years old, and the BMI criteria indicated a normal distribution. The results indicated that there were significant differences in the overall training effectiveness for all students across vital capacity (p < 0.001, η = 0.077), sit-and-reach (p < 0.001, η = 0.027), and middle and long-distance running (p < 0.001, η = 0.031). Post-hoc multiple comparison analyses further revealed that the blended teaching was the most effective in improving these fitness indicators, whereas the online teaching performed poorly on the training effects of middle and long-distance running. Significant training effects were also shown for sit-ups (p < 0.001, η = 0.192) for females and pull-ups (p < 0.001, η = 0.020) for males in gender-specific physical fitness indicators. Similarly, blended teaching showed superior results to other teaching modes.

Conclusion: These findings emphasize the importance of conducting online physical education during unforeseen public health events and highlight the comprehensive effects of blended physical education in the post-pandemic era. Future initiatives should prioritize targeted interventions to address the observed variations in various physical fitness indicators under different physical education teaching models.