Mahon A D, Vaccaro P
Exercise Science Laboratory, University of Maryland, College Park 20742.
Med Sci Sports Exerc. 1989 Aug;21(4):425-31.
There are conflicting data with regard to the effect of endurance training in children. On the basis of this information, the effects of 8 wk of run training on ventilatory threshold (VT) and VO2max of eight male children were investigated. Children ranged in age from 10 to 14 yr, with a mean age of 12.4 yr. All subjects were previously untrained. Training consisted of running 4 d.wk-1 for a period of 8 wk. Continuous running was performed 2 d.wk-1 for 10-30 min at 70-80% of VO2max. Interval running was performed the remaining 2 d.wk-1. Repeated intervals of 100-800 m at 90-100% of VO2max were used in this phase of the training. The total distance run for this type of training was 1.5-2.5 km. Incremental treadmill testing prior to and after the training period indicated a 19.4% increase in VT from 30.5 to 36.4 ml.kg-1.min-1 (P less than 0.05). When VT was expressed as a percentage of VO2max, there was a significant (P less than 0.05) increase from 66.6% to 73.8%. VO2max increased 7.5% from 45.9 to 49.4 ml.kg-2.min-2 (P less than 0.05). None of these changes was noted in eight age- and size-matched children who served as control subjects. The results of this study indicate that 8 wk of endurance running training which is of sufficient frequency, intensity, and duration can significantly improve VT and aerobic capacity in male children.
关于耐力训练对儿童的影响，存在相互矛盾的数据。基于此信息，研究了8周跑步训练对8名男性儿童通气阈值（VT）和最大摄氧量（VO₂max）的影响。儿童年龄在10至14岁之间，平均年龄为12.4岁。所有受试者之前均未受过训练。训练包括每周4天跑步，持续8周。每周2天进行持续跑步，以VO₂max的70 - 80%的强度跑10 - 30分钟。其余每周2天进行间歇跑。在此训练阶段，采用以VO₂max的90 - 100%的强度重复进行100 - 800米的间歇跑。这种训练类型的总跑步距离为1.5 - 2.5公里。训练期前后的递增式跑步机测试表明，通气阈值从30.5毫升·千克⁻¹·分钟⁻¹增加到36.4毫升·千克⁻¹·分钟⁻¹，增幅为19.4%（P < 0.05）。当通气阈值以最大摄氧量的百分比表示时，从66.6%显著增加到73.8%（P < 0.05）。最大摄氧量从45.9毫升·千克⁻²·分钟⁻²增加到49.4毫升·千克⁻²·分钟⁻²，增幅为7.5%（P < 0.05）。在作为对照受试者的8名年龄和体型匹配的儿童中未观察到这些变化。本研究结果表明，频率、强度和持续时间足够的8周耐力跑步训练可显著提高男性儿童的通气阈值和有氧能力。
