Saint-Maurice Pedro F, Anderson Katelin, Bai Yang, Welk Gregory J
a Iowa State University.
b University of Minho.
Res Q Exerc Sport. 2016 Dec;87(4):421-426. doi: 10.1080/02701367.2016.1216067. Epub 2016 Sep 1.
This study examined the agreement between estimated peak oxygen consumption (VO) obtained from the Progressive Aerobic Cardiovascular Endurance Run (PACER) fitness test and equated PACER laps derived from One-Mile Run time (MR).
A sample of 680 participants (324 boys and 356 girls) in Grades 7 through 12 completed both the PACER and the MR assessments. MR time was converted to PACER laps (PACER-MEQ) using previously developed conversion algorithms. Agreement between PACER and PACER-MEQ VO was examined using Pearson correlations, mean absolute percent error (MAPE), and equivalence testing procedures. Classification agreement based on health-related standards was examined using sensitivity, specificity, and Kappa statistics.
Overall agreement between estimated VO obtained from the PACER and PACER-MEQ was high in boys, r(324) = .79, R = .63, and moderate in girls, r(356) = .57, R = .33. The MAPE for estimates obtained from PACER-MEQ was 10.3% and estimates were deemed equivalent to the PACER (43.1 ± 6.9 mL/kg/min vs. 44.6 ± 0.3 mL/kg/min). Classification agreement as illustrated by sensitivity and specificity ranged from 20.4% to 90.2% and was higher for classifications in the Healthy Fitness Zone (HFZ). Kappa statistics ranged from .14 to .51 and were also higher for the HFZ.
Equated PACER laps can be used to obtain equivalent estimates of PACER VO in groups of adolescents, but some disparities can be found when students' scores are classified into the Needs Improvement Zone.
本研究探讨了通过渐进性有氧心血管耐力跑（PACER）体能测试获得的估计峰值耗氧量（VO）与根据一英里跑时间（MR）得出的等效PACER圈数之间的一致性。
680名7至12年级的参与者（324名男孩和356名女孩）完成了PACER和MR评估。使用先前开发的转换算法将MR时间转换为PACER圈数（PACER-MEQ）。使用Pearson相关性、平均绝对百分比误差（MAPE）和等效性测试程序检查PACER与PACER-MEQ VO之间的一致性。使用敏感性、特异性和Kappa统计量检查基于健康相关标准的分类一致性。
从PACER获得的估计VO与PACER-MEQ之间的总体一致性在男孩中较高，r(324) = 0.79，R = 0.63，在女孩中为中等，r(356) = 0.57，R = 0.33。从PACER-MEQ获得的估计值的MAPE为10.3%，估计值被认为与PACER等效（43.1±6.9 mL/kg/min对44.6±0.3 mL/kg/min）。敏感性和特异性所示的分类一致性范围为20.4%至90.2%，在健康体能区（HFZ）的分类中更高。Kappa统计量范围为0.14至0.51，在HFZ中也更高。
等效的PACER圈数可用于获得青少年群体中PACER VO的等效估计值，但在将学生成绩分类到需要改进区时会发现一些差异。
