BioActivEx, Public Health and Sport Sciences, St Luke's Campus, University of Exeter Medical School, Devon, UK.
School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, Queensland, Australia.
Eur J Sport Sci. 2024 Oct;24(10):1480-1494. doi: 10.1002/ejsc.12187. Epub 2024 Aug 30.
Montmorency cherry (MC) can improve endurance performance, but optimal pre-exercise timing of supplementation and influence of training status on efficacy are unknown. We investigated the effect of MC concentrate ingestion between 30- and 150-min pre-exercise in trained and recreational cyclists on 15-km time trial (TT) performance and exercise economy. Twenty participants (10 recreationally active, RA; 10 trained, T) completed 10 min of steady-state exercise (SSE) at 40%Δ (SSE) and a TT on four separate occasions following an unsupplemented (US), 30-, 90- or 150-min pre-exercise Montmorency cherry concentrate (MCC) supplementation conditions (MCC). Venous and capillary blood samples were taken at regular intervals pre- and post-SSE and TT. MCC significantly improved TT performance, but not exercise economy. The greatest improvement in performance occurred following MCC compared to US (US 1603.1 ± 248 s vs. MCC 1554.8 ± 226.7 s, 2.83% performance improvement). Performance was significantly enhanced for trained (US 1496.6 ± 173.1 s vs. MCC 1466.8 ± 157.6 s) but not recreationally active participants. Capillary [lactate] and heart rate were significantly greater during the TT for the 90-min dose timing (p < 0.05). In the MCC and MCC conditions, plasma ferulic (US 8.71 ± 3.22 nmol. L vs. MCC 15.80 ± 8.69 nmol. L, MCC 12.65 ± 4.84 nmol. L) and vanillic acid (US 25.14 ± 10.91 nmol.L vs. MCC 153.07 ± 85.91 nmol. L, MCC 164.58 ± 59.06 nmol. L) were significantly higher pre-exercise than in US and MCC conditions (p < 0.05). There was no significant change in muscle oxygenation status or plasma nitrite/nitrate concentration. MCC supplementation enhanced endurance exercise performance optimally when consumed ∼90 min pre-exercise producing maximal plasma phenolic metabolites during exercise. The ergogenic effect was greater for trained participants.
蒙莫朗西樱桃（MC）可以提高耐力表现，但最佳的运动前补充时间和训练状态对功效的影响尚不清楚。我们研究了在训练有素和娱乐性自行车运动员中，运动前 30-150 分钟摄入 MC 浓缩物对 15 公里计时赛（TT）表现和运动经济性的影响。20 名参与者（10 名娱乐性活跃，RA；10 名训练有素，T）在 40%Δ（SSE）下完成 10 分钟的稳态运动（SSE），并在 4 个不同的时间点进行 TT，分别为未补充（US）、30 分钟、90 分钟或 150 分钟的蒙莫朗西樱桃浓缩物（MCC）补充条件（MCC）。在 SSE 和 TT 之前和之后的定期间隔采集静脉和毛细血管血样。MCC 显著提高 TT 表现，但不能提高运动经济性。与 US 相比，MCC 时的表现改善最大（US 1603.1±248 s 与 MCC 1554.8±226.7 s，2.83%的表现改善）。训练有素的参与者（US 1496.6±173.1 s 与 MCC 1466.8±157.6 s）的表现明显提高，但娱乐性活跃的参与者则没有。90 分钟剂量时间的 TT 时毛细血管[乳酸]和心率显著更高（p<0.05）。在 MCC 和 MCC 条件下，血浆阿魏酸（US 8.71±3.22 nmol·L 与 MCC 15.80±8.69 nmol·L，MCC 12.65±4.84 nmol·L）和香草酸（US 25.14±10.91 nmol·L 与 MCC 153.07±85.91 nmol·L，MCC 164.58±59.06 nmol·L）在运动前显著高于 US 和 MCC 条件（p<0.05）。肌肉氧合状态或血浆亚硝酸盐/硝酸盐浓度没有明显变化。当 MCC 补充剂在运动前约 90 分钟摄入时，最佳地增强耐力运动表现，在运动期间产生最大的血浆酚代谢物。训练有素的参与者的效果更大。
