Hierarchical regression analysis of physical fitness and BMI in primary school students in Sichuan Province - Takeaways - MDSpire

Hierarchical regression analysis of physical fitness and BMI in primary school students in Sichuan Province

  • By

  • Defa Zhang

  • Wennan Zhao

  • Jingtao Wu

  • Jun Hu

  • Xinjuan Zhao

  • July 3, 2026

  • 0 min

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  • 1

    The study analyzed physical fitness data from 36,092 primary school students aged 7–12 in Sichuan Province.

  • 2

    Significant differences in BMI were found across ethnicities, genders, and age groups among the students.

  • 3

    Han students had a higher average BMI (17.07) compared to Yi students (16.90), with boys averaging 17.18 and girls 16.85.

  • 4

    BMI was negatively correlated with 50-meter run performance and lung capacity, indicating lower fitness with higher BMI.

  • 5

    The final regression model explained only a modest proportion of BMI variance (R2 = 0.110), suggesting limited practical significance.

Original Source(s)

Hierarchical regression analysis of physical fitness and BMI in primary school students in Sichuan Province

  • by Defa Zhang, Wennan Zhao, Jingtao Wu, Jun Hu, Xinjuan Zhao

  • July 3, 2026

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