Association of body mass index with muscle strength and cardiorespiratory fitness: A cross-sectional study based on Chinese adolescents

IF 1.6 4区医学 Q1 ANTHROPOLOGY American Journal of Human Biology Pub Date : 2024-07-25 DOI:10.1002/ajhb.24118

Lixin Liu, Junmin Yang, Yan Wang, Ruisheng Jiao

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Abstract

Background

Muscle strength and cardiorespiratory fitness are important components of physical fitness and are important for the physical and mental health development of university students. However, obesity is also an important factor affecting physical fitness, and there are few studies on how body mass index (BMI), which reflects obesity, is associated with muscle strength and cardiorespiratory fitness among Chinese university students. Therefore, this study analyzed the association between BMI and muscle strength and cardiorespiratory fitness among Chinese university students in order to provide a reference and basis for promoting the development of physical fitness among Chinese university students.

Methods

A stratified whole-group sampling method was used to test physical fitness items in 27 973 (15 527 boys, 55.51%) university students in 800 first- to fourth-year university classes in Anhui, Fujian, Xinjiang, Shanghai, and Jiangxi, China. The physical fitness items included height, weight, standing long jump, 1000 m running (boys), and 800 m running (girls) items. Curvilinear regression analysis was used to analyze the correlations that existed between BMI and standing long jump and VO_2max.

Results

The BMI of Chinese 19–22 years old university students was (21.14 ± 2.92) kg/m². The mean standing long jump score was (197.31 ± 34.07) cm. In general, the BMI reached the highest point of 207.92 cm when the BMI was 26.25 kg/m², and then showed a decreasing trend with the increase of BMI. The overall relationship between BMI and vertical jump showed an inverted “U”-shaped curve. In terms of VO_2max, the overall trend of VO_2max increased gradually with the increase of BMI, and when BMI reached 40 kg/m², VO_2max was 4.34 L-kg⁻¹-min⁻¹.

Conclusion

Chinese university students showed an inverted “U” curve relationship between BMI and standing long jump in general, while VO_2max showed a gradual increase with increasing BMI. Compared with the cardiorespiratory fitness of Chinese university students, the effect of BMI changes on muscle strength was greater.

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体重指数与肌肉力量和心肺功能的关系：基于中国青少年的横断面研究。

背景：肌肉力量和心肺功能是体能的重要组成部分，对大学生的身心健康发展非常重要。然而，肥胖也是影响体能的一个重要因素，而关于反映肥胖的体重指数（BMI）与中国大学生肌肉力量和心肺功能的关系的研究却很少。因此，本研究分析了中国大学生体重指数（BMI）与肌肉力量和心肺功能的关系，以期为促进中国大学生体质健康发展提供参考和依据：方法：采用分层整群抽样方法，对安徽、福建、新疆、上海、江西等地800个大学一至四年级班级的27 973名大学生（男生15 527人，占55.51%）进行了体质健康项目测试。体质项目包括身高、体重、立定跳远、1000 米跑（男生）和 800 米跑（女生）。采用曲线回归分析法分析 BMI 与立定跳远和 VO2max 之间的相关性：结果：中国 19-22 岁大学生的体重指数为（21.14 ± 2.92）kg/m2。立定跳远的平均成绩为（197.31 ± 34.07）厘米。总体而言，当 BMI 为 26.25 kg/m2 时，立定跳远成绩达到最高点 207.92 cm，之后随着 BMI 的增加呈下降趋势。体重指数与立定跳远的总体关系呈倒 "U "形曲线。在 VO2max 方面，VO2max 的总体趋势是随着 BMI 的增加而逐渐增加，当 BMI 达到 40 kg/m2 时，VO2max 为 4.34 L-kg-1-min-1：结论：中国大学生的体重指数与立定跳远的关系总体上呈倒 "U "型曲线，VO2max随体重指数的增加而逐渐增加。与中国大学生的心肺功能相比，体重指数的变化对肌肉力量的影响更大。

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来源期刊

American Journal of Human Biology 生物-生物学

CiteScore

4.80

自引率

13.80%

发文量

124

审稿时长

4-8 weeks

期刊介绍： The American Journal of Human Biology is the Official Journal of the Human Biology Association. The American Journal of Human Biology is a bimonthly, peer-reviewed, internationally circulated journal that publishes reports of original research, theoretical articles and timely reviews, and brief communications in the interdisciplinary field of human biology. As the official journal of the Human Biology Association, the Journal also publishes abstracts of research presented at its annual scientific meeting and book reviews relevant to the field. The Journal seeks scholarly manuscripts that address all aspects of human biology, health, and disease, particularly those that stress comparative, developmental, ecological, or evolutionary perspectives. The transdisciplinary areas covered in the Journal include, but are not limited to, epidemiology, genetic variation, population biology and demography, physiology, anatomy, nutrition, growth and aging, physical performance, physical activity and fitness, ecology, and evolution, along with their interactions. The Journal publishes basic, applied, and methodologically oriented research from all areas, including measurement, analytical techniques and strategies, and computer applications in human biology. Like many other biologically oriented disciplines, the field of human biology has undergone considerable growth and diversification in recent years, and the expansion of the aims and scope of the Journal is a reflection of this growth and membership diversification. The Journal is committed to prompt review, and priority publication is given to manuscripts with novel or timely findings, and to manuscripts of unusual interest.