Benítez-Muñoz José Antonio, Rojo-Tirado Miguel Ángel, Benito Peinado Pedro José, Murias Juan M, González-Lamuño Domingo, Cupeiro Rocío
LFE Research Group, Department of Health and Human Performance, Faculty of Physical Activity and Sport Science (INEF), Universidad Politécnica de Madrid, Madrid, Spain.
College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar.
Int J Sports Physiol Perform. 2024 Oct 28;20(1):30-36. doi: 10.1123/ijspp.2024-0079. Print 2025 Jan 1.
To investigate differences between females and males at lactate thresholds 1 (LT1) and 2 (LT2).
Twenty-four female and twenty male participants performed an incremental cycle-ergometer test until exhaustion, where LT1 and LT2 were determined in each volunteer.
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).
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.
NCT06104150.
研究女性和男性在乳酸阈1（LT1）和乳酸阈2（LT2）时的差异。
24名女性和20名男性参与者进行递增式自行车测力计测试直至力竭，在此过程中测定每位志愿者的LT1和LT2。
女性在LT1和LT2时的功率输出低于男性（P < .001）。此外，女性在LT1和LT2时相对于峰值功率的功率输出更高（P < .001）。然而，女性在LT1和LT2时的心率高于男性（P = .008）。此外，女性在LT1和LT2时相对于最大心率的心率高于男性（P = .002）。
在相同的最大百分比时，女性和男性可能处于不同的代谢状态。本研究有助于减少科学研究中的性别偏见，未来的指南应考虑根据性别制定运动处方建议。
NCT06104150。
