Dept of Exercise Science, University of South Carolina, Columbia, SC, USA.
J Phys Act Health. 2012 Mar;9(3):382-8. doi: 10.1123/jpah.9.3.382. Epub 2011 May 9.
The aims of this study were to describe the physical activity levels of girls during dance classes and to identify factors associated with moderate-to-vigorous physical activity (MVPA) in those classes.
Participants were 137 girls (11 to 18 years-old) enrolled in ballet, jazz, or tap dance classes from 11 dance studios. Participants wore an accelerometer during the selected dance class on 2 separate days. Factors hypothesized to be associated with MVPA were dance style, instructional level, instructor's experience, percent of class time spent in choreography, and participants' age, race/ethnicity, BMI-for-age percentile, and years of dance training. Data were analyzed using generalized linear mixed models.
Girls engaged in 9.8 minutes of MVPA, 6.0 minutes of moderate, 3.8 minutes of vigorous, 39.3 minutes of light, and 10.9 minutes of sedentary behavior per hour of dance class participation. Jazz/tap classes provided more MVPA than ballet classes, and intermediate level classes provided more MVPA than advanced level classes. Girls with more dance training obtained more MVPA than girls with less dance training.
Dance classes provide valuable opportunities for adolescent girls to be physically active.
本研究旨在描述女孩在舞蹈课中的身体活动水平，并确定与这些课程中中高强度身体活动（MVPA）相关的因素。
参与者为来自 11 个舞蹈工作室的 137 名 11 至 18 岁的女孩。参与者在 2 天内参加选定的舞蹈课时佩戴加速度计。假设与 MVPA 相关的因素包括舞蹈风格、教学水平、教师经验、编舞时间百分比，以及参与者的年龄、种族/民族、BMI 年龄百分位、和舞蹈训练年限。使用广义线性混合模型对数据进行分析。
女孩每小时舞蹈课的中高强度活动、中等强度活动、高强度活动、低强度活动和久坐行为时间分别为 9.8 分钟、6.0 分钟、3.8 分钟、39.3 分钟和 10.9 分钟。爵士/踢踏舞课程比芭蕾舞课程提供更多的 MVPA，中级水平的课程比高级水平的课程提供更多的 MVPA。舞蹈训练较多的女孩比舞蹈训练较少的女孩获得更多的 MVPA。
舞蹈课为青少年女孩提供了宝贵的身体活动机会。
