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Effects of Caffeine on Repeated Upper/Lower Body Wingates and Handgrip Performance

机译：咖啡因对重复的上/下身翅膀和握力的影响

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International Journal of Exercise Science 8(3): 243-255, 2015. Caffeine enhances aerobic performance, but research is equivocal regarding anaerobic performance. This study examined effects of caffeine (7 mg/kg) on anaerobic performance in anaerobically active males (n = 10). Participants completed counterbalanced, double blind caffeine (Caf) and placebo (Pl) trials including a) 6 x 15 s upper body Wingates (UWant), b) 6 x 15 s lower body Wingates (LWant) and c) 6 x15 s maximal effort static hand grip test (HG) with 3 min recovery between bouts, 30 min between exercises. Peak power (Ppeak), mean power (Pmean), and heart rate (HR) as well as perceptual measures included ratings of perceived exertion (RPE), muscle pain perception (MPP), and perceived recovery status (PRS) were recorded per bout. Session RPE (S-RPE) (15 min post) for each exercise mode and trial RPE (T-RPE) [10 min post relative to testing period for each treatment (Caf vs. Pl)]. A series of 2 (trial) x 6 (bout) ANOVA’s assessed differences and Tukey’s LSD post hoc test were used when necessary. Results showed increased performance (main effect) (UWant) for Ppeak (Caf: 6.72 + 1.2 W/kg vs. Pl: 6.41 + 1.0 W/kg); and Pmean (Caf: 5.39 + 0.8 W/kg vs. Pl: 5.18 + 0.8 W/kg); however no significant main effect for LWant or HG was observed. No significant differences were observed for perceptual measures. Caf improved anaerobic performance in repeated UWant (bouts 1-4) but not LWant or HG. Further studies are warranted to examine Caf ergogenic properties in repeated exercises dominated by anaerobic metabolic pathways given the equivocal results.
机译：国际运动科学杂志8（3）：243-255，2015年。咖啡因可增强有氧运动性能，但有关无氧运动性能的研究尚不明确。这项研究检查了咖啡因（7 mg / kg）对厌氧活动男性（n = 10）厌氧性能的影响。参与者完成了平衡咖啡因，双盲咖啡因（Caf）和安慰剂（Pl）试验，包括a）6 x 15 s上半身双翼（UWant），b）6 x 15 s上半身双翼（LWant）和c）6 x15 s最大的努力静态手部握力测试（HG），每回合之间恢复3分钟，两次运动之间恢复30分钟。记录每回合的峰值功率（Ppeak），平均功率（Pmean）和心率（HR）以及包括感知劳累力（RPE），肌肉疼痛感知（MPP）和感知恢复状态（PRS）在内的感知指标。每个运动模式的会话RPE（S-RPE）（15分钟后）和试验RPE（T-RPE）[相对于每种治疗的测试期后10分钟（Caf vs. Pl）]。必要时，使用了一系列2（试验）x 6（回合）ANOVA评估的差异以及Tukey的LSD事后测试。结果显示，Ppeak的性能有所提高（主要效果）（UWant）（咖啡色：6.72 + 1.2 W / kg，而Pl：6.41 + 1.0 W / kg）;和Pmean（Caf：5.39 + 0.8 W / kg，而Pl：5.18 + 0.8 W / kg）;但是，未观察到LWant或HG的显着主要作用。在知觉方法上没有观察到显着差异。在重复的UWant（回合1-4）中，Caf改善了厌氧性能，但LWant或HG没有改善。鉴于不确定的结果，有必要进行进一步的研究来检查以厌氧代谢途径为主的重复运动中的咖啡因。

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