Laboratory of Applied Sports Science, Institute of Physical Education and Sports, Federal University of Alagoas, Maceió, AL, Brazil.
Department of Physical Education, Federal University of Paraná, Curitiba, PR, Brazil.
Int J Sport Nutr Exerc Metab. 2024 Mar 7;34(3):137-144. doi: 10.1123/ijsnem.2023-0191. Print 2024 May 1.
There is a lack of evidence on the additional benefits of combining caffeine (CAF) and creatine (CRE) supplementation on anaerobic power and capacity. Thus, the aim of the present study was to test the effects of combined and isolated supplementation of CAF and CRE on anaerobic power and capacity. Twenty-four healthy men performed a baseline Wingate anaerobic test and were then allocated into a CRE (n = 12) or placebo (PLA; n = 12) group. The CRE group ingested 20 g/day of CRE for 8 days, while the PLA group ingested 20 g/day of maltodextrin for the same period. On the sixth and eighth days of the loading period, both groups performed a Wingate anaerobic test 1 hr after either CAF (5 mg/kg of body mass; CRE + CAF and PLA + CAF conditions) or PLA (5 mg/kg of body mass of cellulose; CRE + PLA and PLA + PLA conditions) ingestion. After the loading period, changes in body mass were greater (p < .05) in the CRE (+0.87 ± 0.23 kg) than in the PLA group (+0.13 ± 0.27 kg). In both groups, peak power was higher (p = .01) in the CAF (1,033.4 ± 209.3 W) than in the PLA trial (1,003.3 ± 204.4 W), but mean power was not different between PLA and CAF trials (p > .05). In conclusion, CAF, but not CRE ingestion, increases anaerobic power. Conversely, neither CRE nor CAF has an effect on anaerobic capacity.
目前关于联合补充咖啡因（CAF）和肌酸（CRE）对无氧能力和容量的额外益处的证据不足。因此，本研究的目的是测试联合和单独补充 CAF 和 CRE 对无氧能力和容量的影响。24 名健康男性进行了基线性的瓦格纳无氧测试，然后被分配到 CRE（n = 12）或安慰剂（PLA；n = 12）组。CRE 组每天摄入 20g 的 CRE，持续 8 天，而 PLA 组在相同的时间内摄入 20g 的麦芽糊精。在负荷期的第六天和第八天，两组在服用 CAF（5mg/kg 体重；CRE+CAF 和 PLA+CAF 条件）或 PLA（5mg/kg 体重的纤维素；CRE+PLA 和 PLA+PLA 条件）后 1 小时进行瓦格纳无氧测试。负荷期后，CRE 组（+0.87±0.23kg）的体重变化明显大于 PLA 组（+0.13±0.27kg）（p<0.05）。在两组中，峰值功率在 CAF 组（1033.4±209.3W）高于 PLA 组（1003.3±204.4W）（p=0.01），但 PLA 和 CAF 试验之间的平均功率没有差异（p>0.05）。综上所述，CAF 而不是 CRE 的摄入可以提高无氧能力。相反，CRE 和 CAF 对无氧能力都没有影响。
