Lucía A, Hoyos J, Chicharro J L
Departamento de Ciencias Morfológicas y Fisiología, Universidad Europea de Madrid, Madrid, Spain.
Med Sci Sports Exerc. 2001 Aug;33(8):1361-6. doi: 10.1097/00005768-200108000-00018.
The aim of this investigation was to evaluate the preferred cycling cadence of professional riders during competition.
We measured the cadence of seven professional cyclists (28 +/- 1 yr) during 3-wk road races (Giro d'Italia, Tour de France, and Vuelta a España) involving three main competition requirements: uphill cycling (high mountain passes of approximately 15 km, or HM); individual time trials of approximately 50 km on level ground (TT); and flat, long ( approximately 190 km) group stages (F). Heart rate (HR) data were also recorded as an indicator of exercise intensity during HM, TT, and F.
Mean cadence was significantly lower (P < 0.01) during HM (71.0 +/- 1.4 rpm) than either F and TT (89.3 +/- 1.0 and 92.4 +/- 1.3 rpm, respectively). HR was similar during HM and TT (157 +/- 4 and 158 +/- 3 bpm) and in both cases higher (P < 0.01) than during F (124 +/- 2 bpm).
During both F and TT, professional riders spontaneously adopt higher cadences (around 90 rpm) than those previously reported in the majority of laboratory studies as being the most economical. In contrast, during HM they seem to adopt a more economical pedalling rate (approximately 70 rpm), possibly as a result of the specific demands of this competition phase.
本研究旨在评估职业车手在比赛中的偏好骑行踏频。
我们测量了7名职业自行车运动员(28±1岁)在为期3周的公路赛(环意大利自行车赛、环法自行车赛和环西班牙自行车赛)中的踏频,这些比赛包含三项主要比赛要求:爬坡骑行(约15公里的高山赛段,即HM);在平坦地面上进行的约50公里个人计时赛(TT);以及平坦、长距离(约190公里)的团体赛段(F)。同时记录心率(HR)数据,作为HM、TT和F期间运动强度的指标。
HM期间的平均踏频(71.0±1.4转/分钟)显著低于F和TT(分别为89.3±1.0转/分钟和92.4±1.3转/分钟,P<0.01)。HM和TT期间的心率相似(分别为157±4次/分钟和158±3次/分钟),且在这两种情况下均高于F期间的心率(124±2次/分钟,P<0.01)。
在F和TT期间,职业车手自发采用的踏频(约90转/分钟)高于大多数实验室研究中先前报道的最经济踏频。相比之下,在HM期间,他们似乎采用了更经济的蹬踏频率(约70转/分钟),这可能是由于该比赛阶段的特殊要求所致。