Speechly D P, Taylor S R, Rogers G G
Department of Physiology, University of the Witwatersrand Medical School, Parktown, Johannesburg, South Africa.
Med Sci Sports Exerc. 1996 Mar;28(3):359-65. doi: 10.1097/00005768-199603000-00011.
Our study investigated endurance performances in a performance-matched (running 42.2 km) group of females (N = 10) and males (N = 10). The distances examined were 10 km, 21.1 km, 42.2 km, and 90 km. Measurements included VO2max, running economy, lactate accumulation, and running speeds. Although our female subjects performed as well as their male counterparts at 42.2 km (194.8 +/- 12.9 m.min-1 vs 192.6 +/- 16.3 m.min-1), the performance for 90 km was significantly better (P < 0.05) in the female group (171.0 +/- 11.7 m.min-1 vs 155.2 +/- 14.7 m.min-1). The average fraction of the VO2max (F) sustained by each subject indicated that the females achieved their performances by working at a higher (P < 0.01) F (73.4 +/- 5.5% vs 66.3 +/- 3.7% for 42.2 km and 59.8 +/- 6.2% vs 50.2 +/- 3.1% for 90 km). The degree of decline in the fraction of the VO2max sustained as the distance of running increased was significantly less (P < 0.05) in the females. The better performance by the females at 90 km was not related to greater maximal aerobic capacity, running economy, training level, or fatty acid metabolism.
我们的研究调查了一组在表现上匹配（跑42.2公里）的女性（N = 10）和男性（N = 10）的耐力表现。所考察的距离为10公里、21.1公里、42.2公里和90公里。测量指标包括最大摄氧量、跑步经济性、乳酸积累和跑步速度。尽管我们的女性受试者在42.2公里时的表现与男性受试者相当（194.8±12.9米·分钟⁻¹对192.6±16.3米·分钟⁻¹），但在90公里时女性组的表现显著更好（P < 0.05）（171.0±11.7米·分钟⁻¹对155.2±14.7米·分钟⁻¹）。每个受试者维持的最大摄氧量平均比例（F）表明，女性通过在更高的（P < 0.01）F水平下工作来取得她们的成绩（42.2公里时为73.4±5.5%对66.3±3.7%，90公里时为59.8±6.2%对50.2±3.1%）。随着跑步距离增加，女性维持的最大摄氧量比例下降程度显著更小（P < 0.05）。女性在90公里时更好的表现与更大的最大有氧能力、跑步经济性、训练水平或脂肪酸代谢无关。
