Starling R D, Costill D L, Trappe T A, Jozsi A C, Trappe S W, Goodpaster B H
Human Performance Laboratory, Ball State University, Muncie, IN 47306, USA.
Med Sci Sports Exerc. 1995 Jul;27(7):1086-9. doi: 10.1249/00005768-199507000-00019.
Eight competitive male swimmers completed a standardized 365.8 m (400 yd) freestyle swimming trial at a fixed pace (approximately 90% of maximal effort) while wearing a torso swim suit (TOR) or a standard racing suit (STD). Oxygen uptake (VO2), blood lactate, heart rate (HR), and distance per stroke (DPS) measurements were obtained. In addition, a video-computer system was used to collect velocity data during a prone underwater glide following a maximal leg push-off from the side of the pool while wearing the TOR and STD suits. These data were used to calculate the total distance covered during the glides. VO2 (3.76 +/- 0.16 vs 3.92 +/- 0.18 l.min-1) and lactate (8.08 +/- 0.53 vs, 9.66 +/- 0.66 mM) were significantly (P < 0.05) lower during the TOR trial than the STD trial. HR was not different (P > 0.05) between the TOR (170.1 +/- 5.1 b.min-1) and STD (173.5 +/- 5.7 b.min-1) trials. DPS was significantly greater during the TOR (2.70 +/- 0.066 m.stroke-1) versus STD (2.58 +/- 0.054 m.stroke-1) trial. A significantly greater total distance was covered during the prone glide while wearing the TOR (2.05 +/- 0.067 m) compared to the STD (2.00 +/- 0.080 m) suit. These findings demonstrate that a specially designed torso suit reduces the energy demand of swimming compared to a standard racing suit which may be due to a reduction in body drag.
八名有竞争力的男性游泳运动员穿着躯干泳衣（TOR）或标准赛车服（STD），以固定速度（约为最大努力的90%）完成了一次标准化的365.8米（400码）自由泳测试。测量了摄氧量（VO2）、血乳酸、心率（HR）和每划距离（DPS）。此外，使用视频计算机系统在穿着TOR和STD泳衣从泳池一侧进行最大腿部蹬离后的俯卧水下滑行期间收集速度数据。这些数据用于计算滑行期间覆盖的总距离。在TOR测试中，VO2（3.76±0.16对3.92±0.18升·分钟-1）和乳酸（8.08±0.53对9.66±0.66毫摩尔）显著（P<0.05）低于STD测试。TOR（170.1±5.1次·分钟-1）和STD（173.5±5.7次·分钟-1）测试之间的HR没有差异（P>0.05）。在TOR（2.70±0.066米·划-1）与STD（2.58±0.054米·划-1）测试中，DPS显著更大。与STD泳衣（2.00±0.080米）相比，穿着TOR泳衣进行俯卧滑行时覆盖的总距离显著更大（2.05±0.067米）。这些发现表明，与标准赛车服相比，专门设计的躯干泳衣可降低游泳的能量需求，这可能是由于身体阻力的降低。
