Physical Activity Reduces Metabolic Risk via Iron Metabolism: Cross-National Evidence Using the Triglyceride–Glucose Index
2024

Physical Activity and Metabolic Health: The Role of Iron Metabolism

Sample size: 16286 publication 10 minutes Evidence: high

Author Information

Author(s): Hao Zikang, Guo Xinmeng, Wang Yitao, Yang Guang

Primary Institution: Shandong University

Hypothesis

Iron metabolism may mediate the relationship between physical activity and the triglyceride–glucose index.

Conclusion

Increased physical activity is associated with improved metabolic health, as indicated by lower triglyceride–glucose index values, with iron metabolism partially mediating this relationship.

Supporting Evidence

  • Higher physical activity was significantly associated with lower triglyceride–glucose index levels across all three databases.
  • This negative association was more pronounced in older males.
  • Iron metabolism mediated the relationship between physical activity and metabolic health.

Takeaway

Moving around more can help keep our bodies healthy, and how our bodies use iron might help explain why that is.

Methodology

Data were obtained from three large public databases (CHARLS, NHANES, CHNS) and analyzed using regression models to assess the relationship between physical activity and the triglyceride–glucose index.

Potential Biases

Self-reported data may lead to information bias.

Limitations

The cross-sectional design cannot establish causality, and self-reported physical activity data may introduce bias.

Participant Demographics

Participants included adults aged 20 and above from diverse backgrounds in China and the United States.

Statistical Information

P-Value

<0.001

Statistical Significance

p<0.001

Digital Object Identifier (DOI)

10.3390/metabo14120651

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