预测儿童和成人的最大乳酸稳态。

Predicting maximal lactate steady state in children and adults.

作者信息

Beneke Ralph, Heck Hermann, Hebestreit Helge, Leithäuser Renate M

机构信息

Centre for Sport and Exercise Science, Dept. of Biological Sciences, University of Essex, Colchester, England, UK.

出版信息

Pediatr Exerc Sci. 2009 Nov;21(4):493-505. doi: 10.1123/pes.21.4.493.

DOI:10.1123/pes.21.4.493

PMID:20128367

Abstract

The value of blood lactate concentration (BLC) measured during incremental load tests in predicting maximal lactate-steady-state (MLSS) workload has rarely been investigated in children. In 17 children and 18 adults MLSS was 4.1 +/- 0.9 mmol l(-1). Workload at BLC of 3.0 mmol l(-1) determined during an incremental load test explained about 80% of the variance (p < .001) and best predicted MLSS workload independent of age. This was despite the increase in power per time related to maximum incremental load test power being higher (p < .001) in children than in adults. The BLC response to given exercise intensities is faster in children without affecting MLSS.

摘要

在递增负荷测试中测量的血乳酸浓度（BLC）对预测儿童最大乳酸稳态（MLSS）工作量的价值鲜有研究。在17名儿童和18名成人中，MLSS为4.1±0.9 mmol l⁻¹。在递增负荷测试期间测定的BLC为3.0 mmol l⁻¹时的工作量解释了约80%的方差（p <.001），并且能独立于年龄最佳地预测MLSS工作量。尽管儿童每单位时间的功率增加与最大递增负荷测试功率相关（p <.001），且高于成人。儿童对给定运动强度的BLC反应更快，但不影响MLSS。