潜水服、身体密度与游泳表现。
Wetsuits, body density and swimming performance.
作者信息
Cordain L, Kopriva R
机构信息
Department of Exercise and Sport Science, Colorado State University, Fort Collins 80523.
出版信息
Br J Sports Med. 1991 Mar;25(1):31-3. doi: 10.1136/bjsm.25.1.31.
To determine the influence of body composition upon swimming performance with and without wetsuits, 14 competitive female swimmers (mean (s.d.) age, 19.9 (0.9) years) were measured for body density while wearing both wetsuits and normal swimsuits. Subjects swam 400 and 1500 m trials with and without wetsuits, randomly, over a 12-day period. Six subjects participated in an additional trial while wearing neoprene leg-bands fitted over the wetsuit. Mean (s.d.) subject density without and with wetsuits was 1.048 (.009) and 1.021 (.007) g/ml respectively. Wetsuits reduced (P less than 0.05) swim times for the 400 (-4.96%) and 1500 m swim (-3.23%) compared with swimsuit trials. The neoprene bands increased (P less than 0.05) swim times relative to swimsuit and wetsuit trials. With wetsuits, swim times were inversely (P less than 0.05) related to density for the 400 (r = -0.46) and 1500 m swim (r = -0.54) suggesting that wetsuits increase performance by increasing buoyancy and that lean subjects benefit more from wearing wetsuits than do fatter subjects.
为了确定身体成分对穿着和不穿潜水衣时游泳成绩的影响，对14名有竞争力的女性游泳运动员（平均（标准差）年龄，19.9（0.9）岁）在穿着潜水衣和普通泳衣时测量了身体密度。在12天的时间里，受试者随机进行了穿着和不穿潜水衣的400米和1500米游泳测试。6名受试者在潜水衣外面穿上氯丁橡胶腿套参加了另一项测试。不穿潜水衣和穿潜水衣时受试者的平均（标准差）密度分别为1.048（.009）和1.021（.007）克/毫升。与穿泳衣测试相比，潜水衣缩短了400米（-4.96%）和1500米游泳（-3.23%）的时间（P<0.05）。与穿泳衣和潜水衣测试相比，氯丁橡胶腿套增加了游泳时间（P<0.05）。穿着潜水衣时，400米（r = -0.46）和1500米游泳（r = -0.54）的游泳时间与密度呈负相关（P<0.05），这表明潜水衣通过增加浮力来提高成绩，而且瘦的受试者比胖的受试者从穿潜水衣中受益更多。
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