Caffeine ingestion enhances perceptual responses during intermittent exercise in female team-game players

Abstract

We examined the influence of caffeine supplementation on cognitive performance and perceptual responses in female team-game players taking low-dose monophasic oral contraceptives of the same hormonal composition. Ten females (24 ± 4 years; 59.7 ± 3.5 kg body mass; 2-6 training sessions per week) took part in a randomised, double-blind, placebo-controlled crossover-design trial. A 90-min intermittent treadmill-running protocol was completed 60 min following ingestion of a capsule containing either 6 mg • kg(-1) anhydrous caffeine or artificial sweetener (placebo). Perceptual responses (ratings of perceived exertion (RPE), feeling scale (FS), felt arousal scale (FAS)), mood (profile of mood states (POMS)) and cognitive performance (Stroop test, choice reaction time (CRT)) were completed before, during and after the exercise protocol, as well as after ~12 h post exercise. Caffeine ingestion significantly enhanced the ratings of pleasure (P = 0.008) and arousal (P = 0.002) during the exercise protocol, as well as increased vigour (POMS; P = 0.007), while there was a tendency for reduced fatigue (POMS; P = 0.068). Caffeine ingestion showed a tendency to decrease RPE (P = 0.068) and improve reaction times in the Stroop (P = 0.072) and CRT (P = 0.087) tests. Caffeine supplementation showed a positive effect on perceptual parameters by increasing vigour and a tendency to decrease fatigue during intermittent running activity in female games players taking low-dose monophasic oral contraceptive steroids (OCS).

The influence of caffeine ingestion on strength and power performance in female team-sport players

“…In resistance exercise, the effects are less clear, although supplementation appears to increase peak strength of the knee extensors [3] and time to fatigue in submaximal isometric contractions [4, 5]. Supplementation has also been shown to decrease feelings of fatigue and promote mood and perceptual responses during exercise [6, 7]. …”

“…Caffeine supplementation also decreased fatigue and promoted feelings of pleasure during intermittent exercise in this cohort [7]. While it is likely that caffeine supplementation and OCS-associated metabolism have important implications for performance in women undertaking high-impact sport, this information is currently lacking.…”

Effects of high dose coffee intake on aerobic power in dragon female athletes

“…Numerous studies had been shown the effectiveness of caffeine on improve endurance exercise [6][7][8][9]17]. Interestingly, current study showed that using coffee espresso (high dos coffee) on hour prior the exercise could significantly improve the VO2max compared with without coffee condition.…”

“…Numerous studies have shown that caffeine can act as an ergo-genic aid, in long-term exercise [5][6][7][8][9]. Caffeine's primary ergo-genic mode of action is on the CNS [10].…”

“…Most research, have investigated the effect of low or moderate doses of caffeine consumption on performance, perceptual responses and Neuromuscular factors prior to endurance exercise [7][8][9]13,14]. Nevertheless, there are a few studies that considered the effect of high doses of caffeine on endurance exercise [15,16].…”