Robertson R J, Goss F L, Boer N, Gallagher J D, Thompkins T, Bufalino K, Balasekaran G, Meckes C, Pintar J, Williams A
Center for Exercise and Health-Fitness Research, Department of Health and Physical Education, University of Pittsburgh, Pittsburgh, PA 15261, USA.
Med Sci Sports Exerc. 2001 Nov;33(11):1946-52. doi: 10.1097/00005768-200111000-00022.
The Children's OMNI Scale of Perceived Exertion was used to identify a response normalized rating of perceived exertion (RPE)-Overall, RPE-Legs, and RPE-Chest that corresponds to the ventilatory breakpoint (Vpt) in 8- to 12-yr-old female and male children.
Subjects were a priori stratified into two fitness groups on the basis of peak oxygen uptake (VO2 peak): average (A) (41.0-49.0 mL x kg(-1) x min(-1); N = 24) and above average (AA) (50.0-58.0 mL x kg(-1) x min(-1); N = 24). Vpt was determined by a progressive cycle ergometer protocol to VO2 peak.
A gender effect was not observed for any descriptive or dependent variable. Mean VO2peak for the A group was 1.72 L x min(-1) and for the AA group 2.04 L x min(-1). Vpt corresponded to 64.0% VO2 peak for A and 74.0% VO2peak for AA. RPE-Overall (mean A and AA, 6.1), RPE-Legs (mean A and AA, 7.2), and RPE-Chest (mean A and AA, 4.5) did not differ between the fitness groups.
Findings indicated that undifferentiated and differentiated RPE-Vpt were similar between female and male children who varied in VO2peak and Vpt. A comparatively stable RPE-Vpt for 8- to 12-yr-old children that vary in VO2peak and Vpt indicates a group normalized perceptual response.
采用儿童自感用力度综合量表来确定8至12岁男女儿童中与通气断点(Vpt)相对应的自感用力度标准化评分——整体自感用力度、腿部自感用力度和胸部自感用力度。
根据峰值摄氧量(VO2峰值)将受试者预先分为两个健康水平组:平均水平(A)组(41.0 - 49.0 mL·kg⁻¹·min⁻¹;N = 24)和高于平均水平(AA)组(50.0 - 58.0 mL·kg⁻¹·min⁻¹;N = 24)。通过递增式自行车测力计方案测定至VO2峰值时的Vpt。
在任何描述性或因变量上均未观察到性别效应。A组的平均VO2峰值为1.72 L·min⁻¹,AA组为2.04 L·min⁻¹。A组的Vpt对应于VO2峰值的64.0%,AA组为74.0%。两个健康水平组之间的整体自感用力度(A组和AA组平均为6.1)、腿部自感用力度(A组和AA组平均为7.2)和胸部自感用力度(A组和AA组平均为4.5)没有差异。
研究结果表明,VO2峰值和Vpt不同的男女儿童中,未分化和分化的自感用力度与通气断点相似。对于VO2峰值和Vpt不同的8至12岁儿童,相对稳定的自感用力度与通气断点表明了一种组标准化的感知反应。