通过 T10 和 T30 预测游泳中的个体乳酸最小速度。

Predicting the individual lactate minimum speed by T10 and T30 in swimming.

机构信息

School of Physical Education, Department of Sports Science, University of Campinas, Campinas, Brazil.

Meazure Sport Sciences, São Paulo, Brazil -

出版信息

J Sports Med Phys Fitness. 2022 Jan;62(1):19-24. doi: 10.23736/S0022-4707.21.12064-X. Epub 2021 Feb 15.

DOI:10.23736/S0022-4707.21.12064-X

PMID:33586936

Abstract

BACKGROUND

This study investigated the relationship between the lactate minimum (LACmin) and the 10- (T10) and 30-min (T30) continuous tests in swimmers.

METHODS

Twelve swimmers (78.1±3.1% of the world record) performed the LACmin (hyperlactatemia: 2×50 m all-out 8-min apart, incremental part: N.×300 m 30-s apart), T30 and T10 using the front-crawl stroke. Blood samples were collected after each stage of LACmin for lactate analysis. Swimmers were oriented to swim as fast and as constant as possible in T10 and T30.

RESULTS

Speeds in T10 (1.28±0.10 m/s) and T30 (1.21±0.09 m/s) were different from LACmin (1.24±0.09 m/s). T10 and T30 speeds presented a nearly perfect relationship with LACmin and acceptable prediction errors (T10: r=0.938, P<0.001, 0.033 m/s; T30: r=0.927, P<0.001, 0.036 m/s, respectively).

CONCLUSIONS

T10 and T30 can be used as indirect tests for evaluating LACmin in swimming.

摘要

背景

本研究调查了游泳运动员中乳酸最小值（LACmin）与 10 分钟（T10）和 30 分钟（T30）连续测试之间的关系。

方法

12 名游泳运动员（世界纪录的 78.1±3.1%）采用自由泳泳姿进行 LACmin（高乳酸血症：2×50 m 全力 8 分钟间隔，递增部分：N.×300 m 30 秒间隔）、T30 和 T10 测试。在 LACmin的每个阶段后采集血样进行乳酸分析。游泳运动员在 T10 和 T30 中被要求尽可能快且恒定地游泳。

结果

T10（1.28±0.10 m/s）和 T30（1.21±0.09 m/s）的速度与 LACmin（1.24±0.09 m/s）不同。T10 和 T30 的速度与 LACmin呈近乎完美的关系，且预测误差可接受（T10：r=0.938，P<0.001，0.033 m/s；T30：r=0.927，P<0.001，0.036 m/s，分别）。