Rossi Fabrício Eduardo, Panissa Valéria Leme Gonçalves, Monteiro Paula Aulves, Gerosa-Neto José, Caperuto Érico Chagas, Cholewa Jason Michael, Zagatto Alessandro Moura, Lira Fábio Santos
Exercise and Immunometabolism Research Group, Department of Physical Education, Universidade Estadual Paulista, Presidente Prudente, São Paulo, Brazil.
Department of Sport, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.
J Exerc Rehabil. 2017 Apr 30;13(2):179-184. doi: 10.12965/jer.1734938.445. eCollection 2017 Apr.
The aim of the present study was to investigate the effects of caffeine (CAF) and carbohydrate (CHO) intake on strength performance and its metabolic and inflammatory responses during concurrent training. Seven active males ingested a double-placebo (P), CAF (capsule 5 mg/kg) or CHO (20% maltodextrin solution) supplementation before strength exercise. Participants performed three randomized sessions of 5,000-m high-intensity intermittent aerobic exercise at maximal intensity followed by strength exercise, performing after the P, CHO, and CAF intake. The blood samples were collected before (pre) and immediately after concurrent strength exercise (post). We found a similar number of repetitions and total volume in all supplementation groups. There was a main effect of time on glucose, lactate, and interleukin (IL)-6 (<0.05). When compared the changes between groups (postvalues minus prevalues), there was lower glucose in CAF group when compared to CHO group (CAF= 5.0±10.4 vs. CHO=27.8±20 vs. P=15.1±14, =0.031) and higher IL-6 levels (CAF=11.9±9.2 vs. CHO=-2.4±1.7 vs. P=4.3± 11.7, =0.017). There was significant interaction for glucose and lactate (<0.001). In conclusion, CAF and CHO intake did not improve strength performance during concurrent strength training in active males. However, CAF affected immunometabolic responses.
本研究的目的是调查咖啡因（CAF）和碳水化合物（CHO）摄入对同时进行训练期间力量表现及其代谢和炎症反应的影响。七名活跃男性在进行力量训练前摄入双安慰剂（P）、CAF（5毫克/千克胶囊）或CHO（20%麦芽糊精溶液）补充剂。参与者进行了三次随机的5000米高强度间歇有氧运动，强度为最大强度，随后进行力量训练，分别在摄入P、CHO和CAF后进行。在同时进行的力量训练前（pre）和训练后立即（post）采集血样。我们发现所有补充剂组的重复次数和总体积相似。时间对葡萄糖、乳酸和白细胞介素（IL）-6有主要影响（<0.05）。当比较组间变化（post值减去pre值）时，与CHO组相比，CAF组的葡萄糖水平较低（CAF = 5.0±10.4 vs. CHO = 27.8±20 vs. P = 15.1±14，= 0.031），IL-6水平较高（CAF = 11.9±9.2 vs. CHO = -2.4±1.7 vs. P = 4.3±11.7，= 0.017）。葡萄糖和乳酸存在显著的交互作用（<0.001）。总之，在活跃男性同时进行力量训练期间，摄入CAF和CHO并不能提高力量表现。然而，CAF会影响免疫代谢反应。
