Collins M A, Cureton K J, Hill D W, Ray C A
Department of Physical Education, University of Georgia, Athens 30602.
Med Sci Sports Exerc. 1989 Apr;21(2):178-85.
To determine the relation of plasma volume change to intensity of weight lifting, blood samples were obtained from 15 males [mean (+/- SD) age = 22.3 +/- 3.2 yr; height = 176.3 +/- 6.9 cm; weight = 73.0 +/- 11.7 kg] before and over a 60-min period following weight lifting at four different intensities [40, 50, 60, and 70% of one-repetition maximum (1-RM)]. Weight lifting consisted of completing three circuits of four exercises (bench press, bent-over row, arm curl, and parallel squat), with 10 repetitions of each exercise performed over a 30-s period followed by 30 s of rest. Mean (+/- SE) oxygen uptakes (VO2) during weight lifting at the four intensities were 1.31 +/- 0.04, 1.50 +/- 0.07, 1.72 +/- 0.07, and 1.86 +/- 0.08 1.min-1, or 33-47% of treadmill-determined VO2max, respectively. Mean (+/- SE) blood lactates were 6.5 +/- 0.5, 8.7 +/- 0.5, 9.4 +/- 0.6, and 12.0 +/- 0.6 mmol.1(-1), respectively. Mean (+/- SE) heart rates (HR) were 124 +/- 4, 134 +/- 4, 148 +/- 5, and 161 +/- 4 bpm, or 63-82% of treadmill-determined HRmax, respectively. Plasma volume decreased linearly in relation to intensity of weight lifting with mean responses of -7.7 +/- 0.8, -10.7 +/- 0.8, -12.1 +/- 0.9, and -13.9 +/- 0.8% at 40, 50, 60, and 70% of 1-RM, respectively. It was concluded that plasma volume decreases linearly in relation to intensity (%1-RM) of weight lifting and that the relation is similar to that reported for dynamic, low-resistance exercise such as cycling and running.
为了确定血浆容量变化与举重强度之间的关系，在15名男性（平均年龄[±标准差]=22.3±3.2岁；身高=176.3±6.9厘米；体重=73.0±11.7千克）进行四种不同强度（一次重复最大值的40%、50%、60%和70%[1-RM]）的举重前后及之后的60分钟内采集血样。举重包括完成四个练习（卧推、俯身划船、哑铃弯举和平行深蹲）的三个循环，每个练习在30秒内进行10次重复，之后休息30秒。四种强度举重过程中的平均（±标准误）摄氧量（VO2）分别为1.31±0.04、1.50±0.07、1.72±0.07和1.86±0.08升·分钟-1，分别为跑步机测定的VO2max的33%-47%。平均（±标准误）血乳酸分别为6.5±0.5、8.7±0.5、9.4±0.6和12.0±0.6毫摩尔·升-1。平均（±标准误）心率（HR）分别为124±4、134±4、148±5和161±4次/分钟，分别为跑步机测定的HRmax的63%-82%。血浆容量随举重强度呈线性下降，在1-RM的40%、50%、60%和70%时，平均反应分别为-7.7±0.8%、-10.7±0.8%、-12.1±0.9%和-13.9±0.8%。研究得出结论，血浆容量随举重强度（%1-RM）呈线性下降，且这种关系与骑自行车和跑步等动态、低阻力运动所报道的关系相似。
