Bergh U, Forsberg A
National Defence Research Establishment, Sundbyberg, Sweden.
Med Sci Sports Exerc. 1992 Sep;24(9):1033-9.
The influence of body mass on cross-country skiing performance was evaluated by (i) a theoretical analysis of the relationship between body mass (M) and on one hand the maximal aerobic power and on the other the power expense of skiing, (ii) timing skiers in varied terrain during ski racing, (iii) comparing racing success between light and heavy skiers, and (iv) relating maximal aerobic power of skiers and power expense of skiing to body mass. The theoretical analysis indicated that the maximal aerobic power scaled with M2/3, while the mass exponent for the power expenses ranged from 1/3 to 1. The net result was that heavy skiers appear to be favored in all types of terrain but the steep uphills. During ski racing, heavy skiers displayed a tendency to be faster in all types of terrain, although no statistically significant effect was found. The racing success tended to be greater in heavy skiers among males but not among females. During skiing, maximal aerobic power and the power expense of skiing scaled with M0.7 and M0.4, respectively, indicating an advantage for the heavy skier. Altogether, these observations indicate that heavy skiers are favored, but also that other factors are more important than body mass for cross-country ski racing performance.
(i) 对体重(M)与最大有氧功率以及滑雪功率消耗之间的关系进行理论分析;(ii) 在滑雪比赛中对不同地形的滑雪者进行计时;(iii) 比较轻量级和重量级滑雪者的比赛成绩;(iv) 将滑雪者的最大有氧功率和滑雪功率消耗与体重相关联。理论分析表明,最大有氧功率与M2/3成正比,而功率消耗的质量指数范围为1/3至1。最终结果是,除了陡峭的上坡地形外,重量级滑雪者在所有类型的地形中似乎都更具优势。在滑雪比赛中,重量级滑雪者在所有类型的地形中都有速度更快的趋势,尽管未发现具有统计学意义的影响。男性重量级滑雪者的比赛成绩往往更好,但女性并非如此。在滑雪过程中,最大有氧功率和滑雪功率消耗分别与M0.7和M0.4成正比,这表明重量级滑雪者具有优势。总体而言,这些观察结果表明重量级滑雪者更具优势,但对于越野滑雪比赛成绩来说,其他因素比体重更重要。