Tanaka H, Bassett D R, Best S K, Baker K R
Department of Kinesiology, University of Colorado, Boulder 80309-0354, USA.
Can J Appl Physiol. 1996 Apr;21(2):149-54. doi: 10.1139/h96-013.
Seven competitive road cyclists (M +/- SE = 23.7 +/- 1.5 yr, 70.5 +/- 1.7 kg) participated to determine the effects of cycling body position on physiological responses during uphill cycling and maximal oxygen uptake (VO2max). There was no significant difference in VO2max between seated and standing positions on a cycle ergometer (66.4 +/- 1.6 vs. 66.4 +/- 1.7 ml . kg-1 . min-1). When the subjects rode their own bicycle on a treadmill, oxygen uptake and heart rate were significantly (p < 0.05) higher during standing when subjects bicycled at 20.0 km . h-1 (4% grade), but no difference was observed when riding at 12.3 km . h-1 (10% grade). Leg RPE was significantly (p < 0.05) lower for standing position up a 10% grade. The results suggest that the standing position is less economical during moderate hill climbing, but during steep hill climbing, it results in a decreased sensation of effort in the legs.
七名竞技公路自行车运动员(男性±标准误=23.7±1.5岁,70.5±1.7千克)参与了研究,以确定骑行身体姿势对上坡骑行和最大摄氧量(VO2max)期间生理反应的影响。在自行车测力计上,坐姿和站姿的VO2max无显著差异(66.4±1.6对66.4±1.7毫升·千克-1·分钟-1)。当受试者在跑步机上骑自己的自行车时,以20.0千米·小时-1(坡度4%)骑行时,站立时的摄氧量和心率显著更高(p<0.05),但以12.3千米·小时-1(坡度10%)骑行时未观察到差异。在10%坡度的上坡骑行中,站立姿势的腿部主观用力程度显著更低(p<0.05)。结果表明,在中等坡度爬坡时,站立姿势的经济性较差,但在陡坡爬坡时,它会降低腿部的用力感觉。