Pourmirzaei Kouhbanani Samira, Setarehdan Seyed Kamaledin, Fayazmilani Rana
Department of Biological Sciences in Sport, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran.
Control and Intelligent Processing Centre of Excellence, School of Electrical and Computer Engineering, College of Engineering, Tehran University, Tehran, Iran.
Physiol Rep. 2025 Jan;13(1):e70172. doi: 10.14814/phy2.70172.
Given the growing concern over the impact of brain health in individuals with overweight, understanding how mental exertion (ME) during exercise affects substrate oxidation and cardiorespiratory outcomes is crucial. This study examines how ME impacts these outcomes during an incremental exercise test in adults with overweight. Seventeen adults who were overweight completed an incremental exercise test on a cycle ergometer two times, with and without the Stroop task. Energy expenditure (EE), carbohydrate and fat oxidation, maximum heart rate (HR), maximal oxygen uptake (VO2), maximum fat oxidation (MFO), and the intensity of exercise that elicited MFO (Fat) are measured by indirect calorimetry. ME did not change the EE, carbohydrate, and fat oxidation at any stages of the incremental test. However, ME resulted in significantly lower HR, VO2, and MFO (p < 0.01) and increased NASA-TLX scores but showed no change in Fat. These results show ME decreases the value of HR, VO2, and MFO during the incremental exercise test. Due to the increased mental workload demonstrated by the NASA-TLX test, adults with overweight are unable to complete the test to the same extent as they did in the test without ME according to maximal levels in this study.
鉴于超重个体的大脑健康影响日益受到关注，了解运动期间的脑力活动（ME）如何影响底物氧化和心肺功能结果至关重要。本研究考察了超重成年人在递增运动试验期间ME如何影响这些结果。17名超重成年人在有和没有斯特鲁普任务的情况下，在功率自行车上完成了两次递增运动试验。通过间接测热法测量能量消耗（EE）、碳水化合物和脂肪氧化、最大心率（HR）、最大摄氧量（VO2）、最大脂肪氧化（MFO）以及引发MFO的运动强度（Fat）。在递增试验的任何阶段，ME均未改变EE、碳水化合物和脂肪氧化。然而，ME导致HR、VO2和MFO显著降低（p < 0.01），并增加了NASA-TLX评分，但Fat没有变化。这些结果表明，在递增运动试验期间，ME降低了HR、VO2和MFO的值。根据本研究中的最大水平，由于NASA-TLX测试显示出精神工作量增加，超重成年人无法像在没有ME的测试中那样完成相同程度的测试。
