Silva Diego Augusto, Tremblay Mark, Pelegrini Andreia, Dos Santos Silva Roberto Jeronimo, Cabral de Oliveira Antonio Cesar, Petroski Edio Luiz
Dept. of Physical Education, Federal University of Santa Catarina, Santa Catarina, Brazil.
Pediatr Exerc Sci. 2016 May;28(2):312-20. doi: 10.1123/pes.2015-0172. Epub 2016 Jan 5.
Criterion-referenced cut-points for health-related fitness measures are lacking. This study aimed to determine the associations between aerobic fitness and high blood pressure levels (HBP) to determine the cut-points that best predict HBP among adolescents.
This cross-sectional school-based study with sample of 875 adolescents aged 14-19 years was conducted in southern Brazil. Aerobic fitness was assessed using the modified Canadian Aerobic Fitness Test (mCAFT). Systolic and diastolic blood pressure were measured by the oscillometric method with a digital sphygmomanometer. Analyses controlled for sociodemographic variables, physical activity, body mass and biological maturation.
Receiver Operating Characteristic (ROC) curves demonstrated that mCAFT measures could discriminate HBP in both sexes (female: AUC = 0.70; male: AUC = 0.63). The cut-points with the best discriminatory power for HBP were 32 mL·kg-1·min-1 for females and 40 mL·kg-1·min-1 for males. Females (OR = 8.4; 95% CI: 2.1, 33.7) and males (OR: 2.5; CI 95%: 1.2, 5.2) with low aerobic fitness levels were more likely to have HBP.
mCAFT measures are inversely associated with BP and cut-points from ROC analyses have good discriminatory power for HBP.
缺乏与健康相关的体能测量的标准参照切点。本研究旨在确定有氧适能与高血压水平（HBP）之间的关联，以确定最能预测青少年高血压的切点。
这项基于学校的横断面研究对巴西南部875名14 - 19岁的青少年进行了抽样。使用改良的加拿大有氧适能测试（mCAFT）评估有氧适能。采用数字血压计通过示波法测量收缩压和舒张压。分析对社会人口统计学变量、身体活动、体重和生物成熟度进行了控制。
受试者工作特征（ROC）曲线表明，mCAFT测量能够区分两性的高血压（女性：AUC = 0.70；男性：AUC = 0.63）。对高血压具有最佳区分能力的切点，女性为32 mL·kg-1·min-1，男性为40 mL·kg-1·min-1。有氧适能水平低的女性（OR = 8.4；95% CI：2.1，33.7）和男性（OR：2.5；CI 95%：1.2，5.2）患高血压的可能性更高。
mCAFT测量与血压呈负相关，ROC分析得出的切点对高血压具有良好的区分能力。
