Department of Kinesiology, University of Texas at Arlington, Arlington, TX, USA.
Department of Kinesiology, East Carolina University, Greenville, NC, USA.
J Sports Med Phys Fitness. 2021 Jul;61(7):983-990. doi: 10.23736/S0022-4707.20.11527-5. Epub 2020 Nov 4.
Less than half of adolescents in the United States meet the recommended levels of moderate-to-vigorous physical activity (MVPA) and health-related fitness (HRF). Using the 2012 NHANES National Youth Fitness Survey data, this study aimed to examine the associations of movement behaviors (i.e., MVPA and screen-based sedentary behaviors) with HRF (i.e., cardiovascular and muscular fitness) among 11-16- year-old peripubertal boys and girls, respectively.
A total of 470 adolescents (227 boys, 243 girls; age: 13.59±1.12 years old) from the 2012 NHANES dataset were included. The study variables included movement behaviors (i.e., MVPA and screen-based sedentary behavior), anthropometric indices (i.e., waist circumference, Body Mass Index [BMI]), and HRF (i.e., cardiovascular fitness and muscular fitness). Correlational and hierarchical regression analyses were conducted for boys and girls, respectively.
MVPA significantly predicted cardiovascular fitness for boys (β=0.16, P<0.05) and girls (β=0.15, P<0.05) regardless of weight status; screen-based sedentary behavior and waist circumference in girls significantly predicted muscular fitness (β=-0.13 and β=-0.42, P<0.05).
To increase overall HRF in peripubertal girls and boys, it is important to help them maintain healthy weight status and to promote MVPA and limit screen-based sedentary behavior, especially in adolescent girls.
美国只有不到一半的青少年达到了推荐的中等到剧烈体力活动（MVPA）和健康相关体能（HRF）水平。本研究利用 2012 年 NHANES 全国青少年健康调查数据，分别检查了运动行为（即 MVPA 和基于屏幕的久坐行为）与 HRF（即心血管和肌肉健康）之间在青春期前男孩和女孩中的关联。
共有 470 名青少年（227 名男孩，243 名女孩；年龄：13.59±1.12 岁）纳入 2012 年 NHANES 数据集。研究变量包括运动行为（即 MVPA 和基于屏幕的久坐行为）、人体测量指标（即腰围、身体质量指数[BMI]）和 HRF（即心血管健康和肌肉健康）。分别对男孩和女孩进行了相关和层次回归分析。
MVPA 显著预测了男孩（β=0.16，P<0.05）和女孩（β=0.15，P<0.05）的心血管健康，无论体重状况如何；女孩的基于屏幕的久坐行为和腰围显著预测了肌肉健康（β=-0.13 和 β=-0.42，P<0.05）。
为了提高青春期前男孩和女孩的整体 HRF，重要的是要帮助他们保持健康的体重状况，促进 MVPA 并限制基于屏幕的久坐行为，尤其是在青春期少女中。
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