训练和未训练马匹进行最大运动后血乳酸的消失情况。

Blood lactate disappearance after maximal exercise in trained and detrained horses.

作者信息

Rainger J E, Evans D L, Hodgson D R, Rose R J

机构信息

Department of Animal Science, University of Sydney, Sydney, New South Wales, Australia.

出版信息

Res Vet Sci. 1994 Nov;57(3):325-31. doi: 10.1016/0034-5288(94)90125-2.

DOI:10.1016/0034-5288(94)90125-2

PMID:7871252

Abstract

The influence of training on blood lactate concentrations during treadmill exercise and a 40-minute inactive recovery period was examined in seven trained and seven detrained thoroughbred horses. Lactate concentrations were measured in venous blood collected at the end of each exercise state, and at intervals for 40 minutes afterwards. Measurements were made of maximum oxygen uptake (VO2max, ml kg-1 min-1), VLA4 (velocity at which blood lactate concentration was 4 mmol litre-1); LA8 (lactate concentration [mmol litre-1] during exercise at 8 m sec-1), peak lactate (highest lactate concentration after exercise), LA40 (lactate concentration 40 minutes after exercise), the time of peak lactate concentration (minutes after exercise) and the rate of disappearance of blood lactate (Rtd). The trained horses had a significantly lower LA8 (2.1 +/- 0.1 vs 6.5 +/- 1 mmol litre-1, P < 0.01), higher VLA4 (9.8 +/- 0.2 vs 5.8 +/- 0.6 m sec-1, P < 0.01) and higher VO2max (156.3 +/- 3.8 vs 107.1 +/- 3.9 ml kg-1 min-1, P < 0.001). The value of Rtd and the time of peak lactate concentration were not significantly different.

摘要

在七匹经过训练和七匹未经过训练的纯种马中，研究了训练对跑步机运动期间以及40分钟无运动恢复期的血乳酸浓度的影响。在每个运动状态结束时以及之后40分钟内每隔一段时间采集静脉血，测量乳酸浓度。还测量了最大摄氧量（VO2max，毫升·千克⁻¹·分钟⁻¹）、血乳酸浓度为4毫摩尔·升⁻¹时的速度（VLA4）、8米·秒⁻¹运动时的乳酸浓度（LA8）、峰值乳酸（运动后最高乳酸浓度）、运动后40分钟的乳酸浓度（LA40）、峰值乳酸浓度出现的时间（运动后分钟数）以及血乳酸消失率（Rtd）。经过训练的马的LA8显著更低（2.1±0.1对6.5±1毫摩尔·升⁻¹，P<0.01），VLA4更高（9.8±0.2对5.8±0.6米·秒⁻¹，P<0.01），VO2max更高（156.3±3.8对107.1±3.9毫升·千克⁻¹·分钟⁻¹，P<0.001）。Rtd的值和峰值乳酸浓度出现的时间没有显著差异。