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Abstract Background: University is a critical period for the transition from adolescence to early adulthood, during which lifestyle and physical activity patterns become more stable. This study examines longitudinal changes in physical fitness among university students and evaluates whether trajectories differ by discipline group, baseline grade, and sex. Methods: Annual physical fitness test records from 2023 to 2025 are linked at the student level.
1Department of Physical Education and Research, China University of Mining and Technology-Beijing, Beijing, China 2Institute for Emergency Rescue Ergonomics and Protection, China University of Mining and Technology-Beijing, Beijing, China Objective: The purpose of this study was to investigate the relationship between bilateral lower extremity explosive strength asymmetry and non-contact low back injuries in mine rescue workers, a specialized occupational group.
1 Introduction The mine rescue team is a crucial component of the national emergency rescue force, specializing in responding to sudden incidents in mines and implementing emergency rescue operations. Their primary responsibilities include controlling the escalation and spread of mining accidents and ensuring the effective evacuation and withdrawal of personnel in hazardous environments, thereby minimizing the loss of life and property (1).
Introduction Currently, coal remains the cornerstone of China’s national energy security, contributing to over 50% of the country’s primary energy consumption.1 Since 1949, more than 260,000 people have lost in coal mine safety accidents. Chinese mine rescue teams are at the forefront of responding to these disasters, serving as the primary force in protecting human lives.
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