Marsh A P, Martin P E
Exercise and Sports Research Institute, Arizona State University, Tempe 85287.
Med Sci Sports Exerc. 1993 Nov;25(11):1269-74.
The purpose of this study was to compare 1) the preferred cadences and 2) the aerobic demand response to cadence manipulation of highly fit, experienced cyclists and equally fit noncyclists. Eight cyclists (C) and eight non-cyclists (NC) pedaled at 200 W under six randomly ordered cadence conditions (50, 65, 80, 95, 110 rpm and preferred cadence) on a Velodyne trainer. The VO2 responses of C and NC to cadence manipulation were similar. Both groups displayed lower VO2 values at lower cadences. VO2 differences between C and NC across cadences were not significant. Mean preferred pedaling cadence surprisingly was somewhat higher for NC (91.6 +/- 10.5 rpm) than C (85.2 +/- 9.2 rpm), but the difference was not significant. The most economical cadence was significantly lower for C (56.1 +/- 6.9 rpm) than NC (62.9 +/- 4.7 rpm). Thus, cycling experience did not substantially influence preferred cadence nor economy during moderate intensity cycling by highly fit athletes. We speculate that preferred cadence and economy similarities between C and NC are associated with similarities in the dynamic muscular training of the groups.
1）高度健康、经验丰富的自行车运动员与同样健康的非自行车运动员的偏好踏频；2）踏频操控对二者有氧需求的影响。八名自行车运动员（C组）和八名非自行车运动员（NC组）在速力多健身车上，于六种随机排序的踏频条件下（50、65、80、95、110转/分钟以及偏好踏频）以200瓦功率进行蹬踏。C组和NC组对踏频操控的VO₂反应相似。两组在较低踏频时的VO₂值均较低。C组和NC组在不同踏频下的VO₂差异不显著。令人惊讶的是，NC组的平均偏好蹬踏踏频（91.6±10.5转/分钟）略高于C组（85.2±9.2转/分钟），但差异不显著。C组的最经济踏频（56.1±6.9转/分钟）显著低于NC组（62.9±4.7转/分钟）。因此，骑行经验对高度健康的运动员在中等强度骑行时的偏好踏频和经济性影响不大。我们推测，C组和NC组之间偏好踏频和经济性的相似性与两组动态肌肉训练的相似性有关。
