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女性水下脚蹼游泳与脚蹼选择

Underwater fin swimming in women with reference to fin selection.

作者信息

Pendergast D R, Mollendorf J, Logue C, Samimy S

机构信息

Center for Research and Education in Special Environments, School of Engineering, University at Buffalo, Buffalo, NY 14214, USA.

出版信息

Undersea Hyperb Med. 2003 Spring;30(1):75-85.

Abstract

Underwater swimmers use fins, which provide thrust to overcome drag and propel the diver. The type of fin used has been shown to affect diver performance, however data are lacking for women. The oxygen consumption (VdotO2) of swimming as a function of speed, velocity as a function of kick frequency, maximal speed (v), maximal VdotO2 and the maximal thrust were determined for 8 female divers swimming at 1.25 m depth in a 60 m annular pool. VdotO2 increased as a function of v as; 0.52 + -0.485 V + 2.85 V2 (r2 = 0.996) and 0.12 + 1.52 V +1.275 V2 (r2 = 0.999) for high (5 fins) and low (3 fins) groupings, respectively. Splits, vents and flanges did not significantly affect VdotO2. Kick frequency increased linearly with v, with unique slopes for each fin. Maximal VdotO2 was not affect by fin type (1.46 +/- 0.05 l/min). Velocities that could be stained aerobically were 0.60 +/- 0.02 m/sec on average, with the most flexible fin higher (0.71 m/sec). Maximal v averaged 0.87 +/- 0.03 m/sec, with the most rigid fin lower (0.77 m/sec). Maximal thrust was not affected by fin and averaged 104 +/- 9 N. It can be concluded that female divers preferred the most flexible fins, which were also the most economical. This is most likely due to low leg power, which could also explain the absence of differences in maximal thrust and velocity.

摘要

水下游泳者使用脚蹼,脚蹼提供推力以克服阻力并推动潜水者前进。已表明所使用的脚蹼类型会影响潜水者的表现,然而缺乏女性的数据。在一个60米环形泳池中,对8名女性潜水者在1.25米深度游泳时的氧气消耗量(VdotO2)作为速度的函数、速度作为踢水频率的函数、最大速度(v)、最大VdotO2和最大推力进行了测定。VdotO2随v的增加而增加,对于高(5个脚蹼)和低(3个脚蹼)分组,分别为:0.52 ± 0.485V + 2.85V²(r² = 0.996)和0.12 + 1.52V + 1.275V²(r² = 0.999)。切口、通风口和凸缘对VdotO2没有显著影响。踢水频率随v线性增加,每种脚蹼有独特的斜率。最大VdotO2不受脚蹼类型影响(1.46 ± 0.05升/分钟)。有氧条件下能维持的平均速度为0.60 ± 0.02米/秒,最灵活的脚蹼对应的速度更高(0.71米/秒)。最大v平均为0.87 ± 0.03米/秒,最硬的脚蹼对应的速度更低(0.77米/秒)。最大推力不受脚蹼影响,平均为104 ± 9牛。可以得出结论,女性潜水者更喜欢最灵活的脚蹼,而这些脚蹼也是最经济的。这很可能是由于腿部力量较弱,这也可以解释最大推力和速度没有差异的原因。

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