McKenzie D C, Fox E L, Cohen K
Eur J Appl Physiol Occup Physiol. 1978 Oct 20;39(4):241-8. doi: 10.1007/BF00421447.
The purpose of this study was to evaluate metabolic and circulatory responses to interval training of legs or arms during steady-state, submaximal cycling. 15 college males cycled on a bicycle ergometer twice with arms (63 and 83 W) and twice with legs (100 and 125 W) before and following 5 weeks of daily interval training. Seven subjects trained with arm cycling and eight with leg cycling. Significant post-training decreases in submaximal oxygen consumption (VO2), heart rate (HR), and venous blood lactate (LA(V)) were noted when cycling with trained and untrained muscles with the magnitude of change significantly greater with trained muscles. These results indicate metabolic and circulatory adaptations to interval training that are mediated centrally and peripherally. With respect to HR, but not VO2, training a larger muscle mass (legs) produced a greater central but lesser peripheral effect whereas the opposite was true for the smaller arm muscles. The data also suggested that the peripheral adaptation involves a common mechanism controlling both HR and LA(V)) changes with a separate mechanism controlling VO2.
本研究的目的是评估在稳态、次最大强度骑行过程中，腿部或手臂间歇训练对代谢和循环系统的反应。15名大学男性在进行为期5周的每日间歇训练之前和之后，分别使用手臂（63瓦和83瓦）和腿部（100瓦和125瓦）在自行车测力计上进行了两次骑行。7名受试者进行手臂骑行训练，8名进行腿部骑行训练。训练后，当使用训练过和未训练过的肌肉进行骑行时，次最大摄氧量（VO2）、心率（HR）和静脉血乳酸（LA(V)）显著下降，且训练过的肌肉变化幅度明显更大。这些结果表明，间歇训练引起的代谢和循环适应是由中枢和外周介导的。就心率而言，而非VO2，训练较大的肌肉群（腿部）产生更大的中枢效应但外周效应较小，而较小的手臂肌肉则相反。数据还表明，外周适应涉及一个控制心率和LA(V)变化的共同机制，以及一个控制VO2的单独机制。
