Effects of after-school exercise service on physical fitness in primary school students

ZHANG Bin; LI Liang; WANG Mengdie; XU Jianfang

doi:10.16835/j.cnki.1000-9817.2024042

Volume 45 Issue 2

Feb. 2024

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ZHANG Bin, LI Liang, WANG Mengdie, XU Jianfang. Effects of after-school exercise service on physical fitness in primary school students[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2024, 45(2): 253-257. doi: 10.16835/j.cnki.1000-9817.2024042

Citation:

ZHANG Bin, LI Liang, WANG Mengdie, XU Jianfang. Effects of after-school exercise service on physical fitness in primary school students[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2024, 45(2): 253-257. doi: 10.16835/j.cnki.1000-9817.2024042

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Effects of after-school exercise service on physical fitness in primary school students

doi: 10.16835/j.cnki.1000-9817.2024042

China Institute of Sport Science, Beijing (100061), China

Received Date: 2023-09-20
Rev Recd Date: 2023-11-27

Available Online: 2024-03-02

Publish Date: 2024-02-25

Abstract

Abstract

Objective To investigate the effects of after-school exercise service (referred to as the "after-school ES") on physical health, so as to provide evidence for possible beneficial effect of after-school ES. Methods Students in the fourth grade of primary school were recruited from September 2021 to July 2022 in Changsha City and divided into the control group (n=220) and the after-school ES group (n=220). The control group only participated in the regular physical education activities of the school. The after-school ES group received after-school ES for one academic year, 4 times a week, 40-50 minutes per time, for a total of 32 weeks. Body shape indicators such as height, weight and percentage of body fat, as well as physical fitness indicators such as 50-meter running, grip strength and progressive aerobic cardiovascular endurance run (PACER) were measured in September to October 2021 and June to July 2022, respectively. Independent sample t-test, Chi-square test and two-factors repeated measurement analysis of variance were used for statistical analysis of the data. Results After one academic year, compared with the control group [(13.52±2.30)kg], muscle mass of primary school students in the after-school ES group [(13.76±2.32)kg] significantly increased, while waist-to-hip ratio [(0.95±0.16)] and percentage of body fat [(20.17±7.43)%] significantly decreased compared to the control group [(1.01±0.21), (22.02±12.34)%](F=330.70, 6.85, 4.33, P < 0.05). The proportion of overweight and obesity in after-school ES group decreased significantly from 19.5% to 12.3% (χ²=4.35, P < 0.05). Compared with the control group, the scores of 50-meter running [(10.00±1.06, 10.21±0.83)s], 1-minute sit-up [(33.25±8.24, 30.76±9.34)times], sitting and flexion [(14.53±7.50, 8.59±6.32)cm], 1-minute rope skipping [(125.01±30.50, 115.97±32.09)times], eyes closed and single legged standing [(30.00±34.72, 25.72±23.82)s], selective response time [(635.66±91.72, 652.79±120.42)ms] and VO_2max [(45.31±1.02, 43.67±0.85)mL/(kg ·min)] in the after-school ES group were significantly improved, with statistical significance (F=5.32, 443.14, 97.23, 814.07, 36.49, 6.11, 396.91, P < 0.05). Conclusions After-school ES can improve body shape of primary school students, reduce the risk of overweight and obesity and enhance physical fitness. It is recommended that schools should appropriately increase after-school ES to promote physical fitness of students.
- Physical education and training,
- Physical fitness,
- Growth and development,
- Physical shape,
- Students

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References(20)

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