Greater Relative First and Second Lactate Thresholds in Females Compared With Males: Consideration for Exercise Prescription.

IF 3.5 2区医学 Q1 PHYSIOLOGY

International journal of sports physiology and performance Pub Date : 2024-10-28 DOI:10.1123/ijspp.2024-0079

José Antonio Benítez-Muñoz, Miguel Ángel Rojo-Tirado, Pedro José Benito Peinado, Juan M Murias, Domingo González-Lamuño, Rocío Cupeiro

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Abstract

Purpose: To investigate differences between females and males at lactate thresholds 1 (LT1) and 2 (LT2).

Methods: Twenty-four female and twenty male participants performed an incremental cycle-ergometer test until exhaustion, where LT1 and LT2 were determined in each volunteer.

Results: Power output at LT1 and LT2 was lower in females than in males (P < .001). In addition, power output relative to peak power was higher in females at LT1 and LT2 (P < .001). However, heart rate was higher in females than males at LT1 and LT2 (P = .008). Furthermore, the heart rate relative to maximal heart rate was higher in females compared with males at LT1 and LT2 (P = .002).

Conclusion: Females and males may be in a different metabolic situation at the same percentage of maximum. This study helps to reduce sex bias in science, and future guidelines should consider establishing exercise prescription recommendations according to sex.

Clinical trial: NCT06104150.

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与男性相比，女性的相对第一和第二乳酸阈值更高：考虑运动处方。

目的：研究女性和男性在乳酸阈值 1（LT1）和 2（LT2）上的差异：24名女性和20名男性参加者进行了增量式循环测力计测试，直至力竭，并测定了每位志愿者的乳酸阈值1和乳酸阈值2：结果：女性在LT1和LT2时的功率输出低于男性（P < .001）。此外，相对于峰值功率，女性在 LT1 和 LT2 时的功率输出更高（P < .001）。然而，在 LT1 和 LT2 时，女性的心率高于男性（P = .008）。此外，相对于最大心率，女性在LT1和LT2时的心率高于男性（P = .002）：女性和男性在相同的最大心率百分比下可能处于不同的新陈代谢状态。这项研究有助于减少科学中的性别偏见，未来的指南应考虑根据性别制定运动处方建议：临床试验：NCT06104150。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International journal of sports physiology and performance PHYSIOLOGY-SPORT SCIENCES

CiteScore

5.80

自引率

12.10%

发文量

199

审稿时长

6-12 weeks

期刊介绍： The International Journal of Sports Physiology and Performance (IJSPP) focuses on sport physiology and performance and is dedicated to advancing the knowledge of sport and exercise physiologists, sport-performance researchers, and other sport scientists. The journal publishes authoritative peer-reviewed research in sport physiology and related disciplines, with an emphasis on work having direct practical applications in enhancing sport performance in sport physiology and related disciplines. IJSPP publishes 10 issues per year: January, February, March, April, May, July, August, September, October, and November.