Centre for Exercise and Sports Science Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia.
Scand J Med Sci Sports. 2020 Jan;30(1):64-73. doi: 10.1111/sms.13555. Epub 2019 Oct 9.
Compare power output, cadence, and torque in the seated, standing, and forward standing cycling sprint positions.
On three separated occasions (ie, one for each position), 11 recreational male road cyclists performed a 14 seconds sprint before and directly after a high-intensity lead-up. Power output, cadence, and torque were measured during each sprint.
No significant differences in peak and mean power output were observed between the forward standing (1125.5 ± 48.5 W and 896.0 ± 32.7 W, respectively) and either the seated or standing positions (1042.5 ± 46.8 W and 856.5 ± 29.4 W; 1175.4 ± 44.9 W and 927.5 ± 28.9 W, respectively). Power output was higher in the standing, compared with the seated position. No difference was observed in cadence between positions. At the start of the sprint before the lead-up, peak torque was higher in the standing position vs the forward standing position; and peak torque occurred later in the pedal revolution for both the forward standing and standing positions when compared with the seated position. At the start of the sprint after the lead-up, peak torque occurred later in the forward standing position when compared with both the seated and standing position. At the end of the sprint, no difference in torque was found between the forward standing and standing position either before or after the lead-up.
Sprinting in the forward standing sprint position does not impair power output, cadence, and torque when compared with the seated and standing sprint positions.
比较坐式、站式和前站立式骑行冲刺姿势下的功率输出、踏频和扭矩。
在三个不同的场合（即每个姿势一个场合），11 名休闲男性公路自行车手在高强度的准备活动后进行了 14 秒的冲刺。在每个冲刺中测量功率输出、踏频和扭矩。
在向前站立（峰值功率输出 1125.5 ± 48.5 W，平均功率输出 896.0 ± 32.7 W）和坐式或站式（峰值功率输出 1042.5 ± 46.8 W，平均功率输出 856.5 ± 29.4 W；峰值功率输出 1175.4 ± 44.9 W，平均功率输出 927.5 ± 28.9 W）之间，没有观察到峰值和平均功率输出的显著差异。与坐式相比，站立式的功率输出更高。踏频在各位置之间没有差异。在准备活动前的冲刺开始时，站立位的峰值扭矩高于前站立位；与坐式相比，前站立和站立位的峰值扭矩出现在踏板旋转的后期。在准备活动后的冲刺开始时，与坐式和站立式相比，前站立位的峰值扭矩出现较晚。在冲刺结束时，在前站立和站立位，无论是在准备活动前后，都没有发现扭矩的差异。
与坐式和站式冲刺姿势相比，前站立式冲刺姿势不会降低冲刺的功率输出、踏频和扭矩。
