Bergeron M F, Maresh C M, Kraemer W J, Abraham A, Conroy B, Gabaree C
Department of Sport, Leisure, and Exercise Science, University of Connecticut, Storrs 06269.
Int J Sports Med. 1991 Oct;12(5):474-9. doi: 10.1055/s-2007-1024716.
Heart rate (HR), hematocrit, hemoglobin, blood glucose, and plasma concentrations of lactate, cortisol, and testosterone were monitored in 10 male subjects (Division I, 20.3 +/- 2.5 yrs, VO2max: 58.5 +/- 9.4 ml.kg-1.min-1) during singles tennis and a treadmill test. During the on-court session, HR was 144.6 +/- 13.2 beats.min-1 for the 85 min of play. Plasma lactate rose 50% from a post-warmup value of 1.6 +/- 0.6 mmol.l-1 to 2.3 +/- 1.2 mmol.l-1 during play (p greater than 0.05). Blood glucose slightly decreased (8%, p greater than 0.05) from a pre-exercise value of 4.6 +/- 0.8 mmol.l-1 as a result of the 10-min warmup. This was followed by a 23% rise (p less than 0.05) from 4.2 +/- 1.0 mmol.l-1 to 5.2 +/- 0.6 mmol.l-1, measured after the first 30 min of play. Blood glucose subsequently remained steady at slightly above the pre-exercise value. Plasma cortisol rose (9%, p greater than 0.05) during the warmup and subsequently decreased (p less than 0.05) from a post-warmup value of 558.2 +/- 285.2 nmol.l-1 to 337.1 +/- 173.3 nmol.l-1 (a 40% decrease), and remained decreased during recovery. Plasma testosterone rose 22% (p less than 0.05) from pre-exercise to recovery (13.5 +/- 3.8 nmol.l-1 and 16.5 +/- 2.6 nmol.l-1, respectively). Although tennis is characterized by periods of high-intensity exercise, the overall metabolic response resembles prolonged moderate-intensity exercise.
在单打网球和跑步机测试期间，对10名男性受试者（一级运动员，20.3±2.5岁，最大摄氧量：58.5±9.4毫升·千克⁻¹·分钟⁻¹）的心率（HR）、血细胞比容、血红蛋白、血糖以及血浆中乳酸、皮质醇和睾酮的浓度进行了监测。在场上训练期间，85分钟的比赛中HR为144.6±13.2次·分钟⁻¹。比赛期间，血浆乳酸从热身结束时的1.6±0.6毫摩尔·升⁻¹上升了50%，达到2.3±1.2毫摩尔·升⁻¹（p>0.05）。由于10分钟的热身，血糖从运动前的4.6±0.8毫摩尔·升⁻¹略有下降（8%，p>0.05）。随后，在比赛开始30分钟后测量，血糖从4.2±1.0毫摩尔·升⁻¹上升了23%（p<0.05），达到5.2±0.6毫摩尔·升⁻¹。随后血糖维持在略高于运动前值的水平。血浆皮质醇在热身期间上升（9%，p>0.05），随后从热身结束时的558.2±285.2纳摩尔·升⁻¹下降（p<0.05）至337.1±173.3纳摩尔·升⁻¹（下降40%），并在恢复期间持续下降。血浆睾酮从运动前到恢复阶段上升了22%（p<0.05）（分别为13.5±3.8纳摩尔·升⁻¹和16.5±2.6纳摩尔·升⁻¹）。尽管网球运动具有高强度运动阶段，但总体代谢反应类似于长时间的中等强度运动。
