Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, St. Luke's Campus, Heavitree Road, Exeter, EX1 2LU, UK.
Eur J Appl Physiol. 2019 Mar;119(3):675-684. doi: 10.1007/s00421-018-04058-6. Epub 2019 Jan 8.
Montmorency cherries are rich in polyphenols that possess antioxidant, anti-inflammatory and vasoactive properties. We investigated whether 7-day Montmorency cherry powder supplementation improved cycling time-trial (TT) performance.
8 trained male cyclists ([Formula: see text]: 62.3 ± 10.1 ml kg min) completed 10-min steady-state (SS) cycling at ~ 65% [Formula: see text] followed by a 15-km TT on two occasions. Participants consumed 6 pills per day (Montmorency cherry powder, MC; anthocyanin 257 mg day or dextrose powder, PL) for a 7-day period, 3 pills in the morning and evening. Capillary blood [lactate] was measured at baseline, post SS and post TT. Pulmonary gas exchange and tissue oxygenation index (TOI) of m. vastus lateralis via near-infrared spectroscopy, were measured throughout.
TT completion time was 4.6 ± 2.9% faster following MC (1506 ± 86 s) supplementation compared to PL (1580 ± 102 s; P = 0.004). Blood [lactate] was significantly higher in MC after SS (PL: 4.4 ± 2.1 vs. MC: 6.7 ± 3.3 mM, P = 0.017) alongside an elevated baseline TOI (PL: 68.7 ± 2.1 vs. MC: 70.4 ± 2.3%, P = 0.018).
Montmorency cherry supplementation improved 15-km cycling TT performance. This improvement in exercise performance was accompanied by enhanced muscle oxygenation suggesting that the vasoactive properties of the Montmorency cherry polyphenols may underpin the ergogenic effects.
蒙莫朗西樱桃富含具有抗氧化、抗炎和血管活性特性的多酚。我们研究了 7 天蒙莫朗西樱桃粉补充是否能提高自行车计时赛（TT）的表现。
8 名训练有素的男性自行车运动员（[Formula: see text]：62.3±10.1 ml kg min）在两次试验中，分别进行了 10 分钟的稳态（SS）自行车运动，约为 65% [Formula: see text]，然后进行了 15 公里 TT。参与者每天服用 6 片药丸（蒙莫朗西樱桃粉，MC；花青素 257 mg 天或葡萄糖粉，PL），共 7 天，每天早晚各 3 片。在基线、SS 后和 TT 后测量毛细血管血 [乳酸]。通过近红外光谱测量股外侧肌的肺气体交换和组织氧合指数（TOI）。
与 PL（1580±102 s）相比，MC（1506±86 s）补充后 TT 完成时间快 4.6±2.9%（P=0.004）。SS 后 MC 血液中的 [乳酸]明显更高（PL：4.4±2.1 vs. MC：6.7±3.3 mM，P=0.017），同时基线 TOI 升高（PL：68.7±2.1 vs. MC：70.4±2.3%，P=0.018）。
蒙莫朗西樱桃补充剂提高了 15 公里自行车 TT 的表现。运动表现的提高伴随着肌肉氧合的增强，这表明蒙莫朗西樱桃多酚的血管活性特性可能是其产生运动效果的基础。
