Faculty of Physical Education and Physiotherapy, Federal University of Amazonas, Manaus, Brazil.
Faculty of Pharmacy of Amazonas, FederalUniversity of Amazonas, Manaus, Brazil.
Res Sports Med. 2024 Jul-Aug;32(4):580-596. doi: 10.1080/15438627.2023.2189114. Epub 2023 Mar 15.
The objective was to evaluate the effects of acai supplementation (AS) on markers of muscle damage. Twelve men participated in the 21-day study. All performed the damage protocol (DP) in two moments, separated by 7 days. The DP consisted of 10 sets of 10 CMJs, with a recovery of 1 min between sets. The AS was performed for 7 days with 40 g/day of dehydrated acai (GA) or placebo (GP). Blood parameters (CK, LDH and Trolox-equivalent antioxidant capacity - TEAC) were evaluated at 0 h and 24 h. Ultrasound images (VL, RF and GM), DOMS in lower limbs and isometric peak torque (IPT) of knee extensors and flexors were evaluated at 0 h, 24 h, 48 h and 72 h after DP. A time-treatment interaction was observed for TEAC ( = 0.01), in which the GA presented increases of 11% after 24 h. Similarly, time-treatment interaction was observed for knee flexors IPT ( = 0.02), where GA showed superior recovery after 24 h (GA = 108 ± 23 vs. GP = 92 ± 24 N∙m) and 72 h (GA = 113 ± 31 vs. GP = 98 ± 26 N∙m). No significance was observed in the fatigue index for knee extensors ( = 0.75) and flexors ( = 0.89), indicating similar fatigue in both situations. We concluded that AS increased the TEAC and promoted faster recovery of the knee flexors IPT when compared to GP.
目的在于评估巴西莓补充剂（AS）对肌肉损伤标志物的影响。十二名男性参与了为期 21 天的研究。所有人都在两个时间点进行了损伤方案（DP），间隔 7 天。DP 由 10 组 10CMJ 组成，每组之间的恢复时间为 1 分钟。AS 在 7 天内进行，每天服用 40 克脱水巴西莓（GA）或安慰剂（GP）。在 0 小时和 24 小时评估血液参数（CK、LDH 和 Trolox 等效抗氧化能力 - TEAC）。在 DP 后 0 小时、24 小时、48 小时和 72 小时评估下肢超声图像（VL、RF 和 GM）、DOMS 和膝关节伸肌和屈肌的等长峰值扭矩（IPT）。TEAC 观察到时间-处理相互作用（=0.01），其中 GA 在 24 小时后增加了 11%。同样，观察到膝关节屈肌 IPT 的时间-处理相互作用（=0.02），其中 GA 在 24 小时（GA=108±23 比 GP=92±24 N·m）和 72 小时（GA=113±23 比 GP=98±26 N·m）后具有更好的恢复。膝关节伸肌（=0.75）和屈肌（=0.89）的疲劳指数没有显著性差异，表明两种情况下的疲劳程度相似。我们得出结论，与 GP 相比，AS 增加了 TEAC 并促进了膝关节屈肌 IPT 的更快恢复。
