Hoffman M D, Clifford P S, Watts P B, Drobish K M, Gibbons T P, Newbury V S, Sulentic J E, Mittelstadt S W, O'Hagan K P
Department of Physical Medicine and Rehabilitation, Medical College of Wisconsin, Milwaukee 53295.
Med Sci Sports Exerc. 1994 Oct;26(10):1284-9.
The physiological responses to treadmill roller skiing with the double pole (DP) and diagonal stride (DS) techniques were compared at 1.7% and 7.1% grades among eight cross-country ski racers. Oxygen uptake (VO2) requirements were found to be lower (P < 0.05) for DP at the 1.7% grade, but similar at the 7.1% grade. In contrast, ratings of perceived exertion (RPE) and percentages of technique-specific peak VO2 were similar between techniques at the 1.7% grade, and lower (P < 0.05) for DS at the 7.1% grade. RPE and percentages of technique-specific peak VO2 were strongly correlated (r = 0.89). The primary findings indicate that 1) the economies for DP and DS are dependent upon the incline, 2) it is possible for the economy of DP to be greater than DS although the percentages of technique-specific peak VO2 are similar, and 3) the perceived effort associated with the use of DP and DS reflects the percentage of technique-specific peak VO2.
在1.7%和7.1%的坡度下，对8名越野滑雪运动员使用双杖（DP）和斜线滑（DS）技术进行跑步机模拟越野滑雪时的生理反应进行了比较。发现在1.7%的坡度下，DP的摄氧量（VO2）需求较低（P<0.05），但在7.1%的坡度下两者相似。相比之下，在1.7%的坡度下，两种技术之间的主观用力感觉（RPE）和特定技术的峰值VO2百分比相似，而在7.1%的坡度下，DS的RPE和特定技术的峰值VO2百分比更低（P<0.05）。RPE与特定技术的峰值VO2百分比密切相关（r = 0.89）。主要研究结果表明：1）DP和DS的经济性取决于坡度；2）尽管特定技术的峰值VO2百分比相似，但DP的经济性可能大于DS；3）与使用DP和DS相关的主观用力反映了特定技术的峰值VO2百分比。
