Yáñez-Sepúlveda Rodrigo, Barraza-Gómez Fernando, Báez-San Martin Eduardo, Araneda Oscar F, Zavala Juan P, Hecht Gernot K, Tuesta Marcelo
Faculty of Philosophy and Education, Pontificia Universidad Católica de Valparaíso, Viña del Mar, Chile.
School of Education, Pedagogy in Physical Education, University of Viña del Mar, Viña del Mar, Chile.
J Sports Med Phys Fitness. 2018 Jan-Feb;58(1-2):113-119. doi: 10.23736/S0022-4707.17.06835-9. Epub 2017 Feb 8.
One of the most popular expressions of massive group classes of aerobic physical activity is Zumba fitness. The aim of the study was to compare and relate the energy expenditure and the amount and intensity of physical effort during a Zumba fitness class in women with different Body Mass Index (BMI).
Body displacements of 61 adult women who performed a one-hour Zumba session were evaluated with triaxial accelerometers. In order to observe the effect of BMI women were divided into normal weight (N.=26), overweight (N.=21) and obese groups (N.=14).
The average number of steps was 4533.3±1351 and the percentage of total class time of moderate to vigorous intensity (% MVPA) was 53.8±14.4%. The metabolic intensity average was 3.64±1.1 MET, with an energy expenditure by total body mass of 3.9±1.6 kcal/kg. When analyzing groups, the normal weight group had a greater number of steps (5184.2±1561.1 steps/class) compared to overweight (4244.8±1049.3 steps/class) and obese women (3756.9±685.7 steps/class) with P<0.05. Also, the normal weight group spent a lower percentage of class time at the lower levels of intensity (sedentary and lifestyle activity levels) and more time at the highest levels (vigorous and very vigorous) compared to obese women (P<0.05). Participants with a normal weight obtained a higher % MVPA (62.1±15%) compared to overweight (50.1±9.4%) and obese (44.1±11.9%) groups with P<0.05. A metabolic intensity of 4.6±1.9 MET in the normal weight group was higher compared to 3.5±1.0 MET in the overweight (P<0.05) and 3.1±1.2 MET in the obese group (P<0.05), was observed. The subjective perception of effort was 7.84±0.9 (Borg CR 10), no differences between groups. Also we observed in all participants that at higher BMI values, there were lower energy expenditure values per kilo of weight (r=-0.40; P<0.001), metabolic intensity (r=-0.39; P<0.001), step counts (r=-0.43; P<0.001) and % MVPA (r=-0.50; P<0.001).
These results show that a higher BMI is associated with a lower intensity of effort, energy expenditure and amount of physical activity during a one-hour Zumba class, restricting to overweight and obese women to achieving the effort parameters recommended to control weight and improve cardiovascular fitness.
尊巴健身是有氧体育活动中最受欢迎的集体课程形式之一。本研究的目的是比较不同体重指数（BMI）女性在尊巴健身课程中的能量消耗、体力消耗的量和强度，并探讨它们之间的关系。
使用三轴加速度计评估61名成年女性进行的1小时尊巴课程中的身体位移。为了观察BMI的影响，将女性分为正常体重组（n = 26）、超重组（n = 21）和肥胖组（n = 14）。
平均步数为4533.3±1351步，中等至剧烈强度的总课程时间百分比（%MVPA）为53.8±14.4%。代谢强度平均为3.64±1.1梅脱，全身质量的能量消耗为3.9±1.6千卡/千克。在分析分组时，正常体重组的步数（5184.2±1561.1步/课程）多于超重组（4244.8±1049.3步/课程）和肥胖女性（3756.9±685.7步/课程），P<0.05。此外，与肥胖女性相比，正常体重组在较低强度水平（久坐和生活方式活动水平）的课程时间百分比更低，在最高强度水平（剧烈和非常剧烈）的时间更多（P<0.05）。正常体重的参与者获得的%MVPA（62.1±15%）高于超重组（50.1±9.4%）和肥胖组（44.1±11.9%），P<0.05。正常体重组的代谢强度为4.6±1.9梅脱，高于超重组的3.5±1.0梅脱（P<0.05）和肥胖组的3.1±1.2梅脱（P<0.05）。主观努力感受为7.84±0.9（Borg CR 10），各组之间无差异。我们还观察到，在所有参与者中，BMI值越高，每千克体重的能量消耗值越低（r = -0.40；P<0.001）、代谢强度越低（r = -0.39；P<0.001）、步数越少（r = -0.43；P<0.001）和%MVPA越低（r = -0.50；P<0.001）。
这些结果表明，较高的BMI与1小时尊巴课程中的较低努力强度、能量消耗和体力活动量相关，这限制了超重和肥胖女性达到控制体重和改善心血管健康所推荐的努力参数。
