游泳强度对后续自行车运动及铁人三项总成绩的影响。
Effect of swimming intensity on subsequent cycling and overall triathlon performance.
作者信息
Peeling P D, Bishop D J, Landers G J
机构信息
University of Western Australia, Crawley, WA 6009, Australia.
出版信息
Br J Sports Med. 2005 Dec;39(12):960-4; discussion 964. doi: 10.1136/bjsm.2005.020370.
OBJECTIVES
To investigate the effects of different swimming intensities on subsequent cycling and overall triathlon performance.
METHODS
Nine highly trained, male triathletes completed five separate laboratory sessions comprising one graded exercise test, a swim time trial (STT), and three sprint distance triathlons (TRI). The swimming velocities of the three TRI sessions were 80-85% (S80), 90-95% (S90), and 98-102% (S100) of the STT velocity. Subsequent cycling and running were performed at a perceived maximal intensity. Swimming stroke mechanics were measured during the swim. Plasma lactate concentration and ratings of perceived exertion were recorded at the conclusion of the swim and over the course of subsequent cycling and running. Oxygen consumption was recorded during the cycle.
RESULTS
The S80 and S90 cycle times were faster than the S100 cycle time (p<0.05). The overall triathlon time of S80 was faster than that of S100 (p<0.05). The S100 swim was characterised by a greater stroke rate than S80 and S90 (p<0.05) and a greater plasma lactate concentration than S80 (p<0.01).
CONCLUSION
A swimming intensity below that of a time trial effort significantly improves subsequent cycling and overall triathlon performance.
目的
研究不同游泳强度对后续骑行及全程铁人三项比赛成绩的影响。
方法
九名训练有素的男性铁人三项运动员完成了五次独立的实验室测试，包括一次分级运动测试、一次游泳计时赛（STT）以及三次短距离铁人三项赛（TRI）。三次TRI测试中的游泳速度分别为STT速度的80 - 85%（S80）、90 - 95%（S90）和98 - 102%（S100）。后续的骑行和跑步以主观最大强度进行。在游泳过程中测量游泳划水力学。在游泳结束时以及后续骑行和跑步过程中记录血乳酸浓度和主观用力程度评分。在骑行过程中记录耗氧量。
结果
S80和S90的骑行时间比S100的骑行时间快（p<0.05）。S80的全程铁人三项赛时间比S100的快（p<0.05）。S100组游泳的特点是划水频率高于S80和S90（p<0.05），血乳酸浓度高于S80（p<0.01）。
结论
低于计时赛强度的游泳强度可显著提高后续骑行及全程铁人三项比赛成绩。
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