A Comparison of the Effects of Two Protocols of Concurrent Resistance and Aerobic Training on Physical Fitness in Middle School Students

Overview

Journal PeerJ

Specialties Biology
Environmental Health
General Medicine

Date 2024 Apr 29

PMID 38680888

Authors

Zhen Li

Teng Ding

Yanan Gao

Xiaowei Han

Yang Liu

Zhixiong Zhou

Affiliations

Soon will be listed here.

Abstract

Objective: This study aimed to compare the effects of two concurrent training (CT) protocols on the physical fitness of middle school students.

Method: A 12-week quasi-experimental pre-test/post-test study was conducted with 157 middle school students (age = 12.48 ± 0.34, = 90 females) divided into three groups: CT group A (CT-0h) received combined resistance training (RT) and aerobic training (AT) in each physical education session, CT group B (CT-48h) received RT and AT across two separate physical education classes 48 h apart, and a control group (Con) received no training. Training occurred twice a week. Test indicators included cardiorespiratory fitness (CRF) measured by estimated VOmax and 20 m shuttle run (laps), as well as muscle strength assessed through long jump, vertical jump, and handgrip strength.

Results: The intervention groups exhibited significant increases in estimated VOmax and muscle strength compared to their baseline values ( < 0.05). Both CT-0h and CT-48h groups demonstrated significant improvements in 20 m shuttle run (laps) (mean difference: 8.88 laps, < 0.01; mean difference: 4.81 laps, < 0.01, respectively), standing long jump (mean difference: 6.20 cm, < 0.01; mean difference: 3.68 cm, < 0.01, respectively), vertical jump (mean difference: 4.95 cm, < 0.01; mean difference: 4.04 cm, < 0.01, respectively), and handgrip strength (mean difference: 11.17 kg, < 0.01; mean difference: 6.99 kg, < 0.01, respectively). CT-0h group exhibited significantly increased estimated VOmax (mean difference: 1.47 ml/kg/min, < 0.01) compared to the CT-48h group.

Conclusion: Both CT programs effectively improved adolescents' physical fitness indicators. However, the program that integrated RT and AT within the same physical education class demonstrated superior enhancement in adolescents' CRF.

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