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The main objective of this placebo-controlled, triple-blind, balanced crossover study was to assess the acute effects of phenylcapsaicin (PC) intake (2.5 mg) on intraocular pressure (IOP), ocular perfusion pressure (OPP), and heart rate (HR) during a 30-min cycling task performed at 15% of the individual maximal power. Twenty-two healthy young adults performed the cycling task 45 min after ingesting PC or placebo. IOP was measured with a rebound tonometer before exercise, during cycling (every 6 min), and after 5 and 10 min of recovery. OPP was assessed before and after exercise. HR was monitored throughout the cycling task. We found an acute increase of IOP levels related to PC consumption while cycling (mean difference = 1.91 ± 2.24 mmHg; p =.007, η p 2 =.30), whereas no differences were observed for OPP levels between the PC and placebo conditions (mean difference = 1.33 ± 8.70 mmHg; p =.608). Mean HR values were higher after PC in comparison with placebo intake (mean difference = 3.11 ± 15.87 bpm, p =.019, η p 2 =.24), whereas maximum HR did not differ between both experimental conditions (p =.199). These findings suggest that PC intake before exercise should be avoided when reducing IOP levels is desired (e.g., glaucoma patients or those at risk). Future studies should determine the effects of different ergogenic aids on IOP and OPP levels with other exercise configurations and in the long term. [ABSTRACT FROM AUTHOR]

Although prolonged training with stroboscopic eyewear has demonstrated potential for enhancing visuomotor skills, the acute effects of stroboscopic stimulation are not well understood. The aim of the study was to investigate the short‐term effects of stroboscopic exposure during the ball‐specific phase of soccer warm‐up on agility performance in preplanned and unpredictable (RA) tasks. Also, these effects were examined both in tasks involving ball dribbling and without the ball, as well as under fatigued and non‐fatigued conditions. Twenty‐two male soccer players participated in three sessions: a familiarization session and two experimental sessions, one with and one without stroboscopic exposure during the warm‐up. RA was assessed before and after each session using the 10‐repetition Illinois Agility Test, with and without ball control. Results showed that stroboscopic exposure significantly enhanced RA performance in tasks involving ball dribbling (p < 0.001, effect size (ES) = 0.57), and these effects were maintained under fatigued conditions (p = 0.007, ES = 0.39). However, there were no significant improvements in RA without the ball (p > 0.05). Exercise‐induced fatigue reduced RA performance in both conditions (F = 28.2; p < 0.001), regardless of warm‐up type (F = 0.5; p = 0.484). Additionally, stroboscopic exposure did not significantly affect the changes of direction speed performance in the Illinois Agility Test (F = 0.5; p = 0.479). These findings suggest that integrating stroboscopic eyewear into the ball‐specific phase of soccer warm‐ups effectively improves RA performance in tasks involving dribbling under both non‐fatigued and fatigued conditions. The effectiveness of acute stroboscopic stimulation is closely related to the specificity of the tasks in which it is applied. These insights could benefit training across various sports, encouraging coaches to adopt this approach to enhance player preparation before both training and competitions. Highlights: Stroboscopic exposure during the ball‐specific phase of soccer warm‐up significantly improved reactive agility (RA) tasks involving ball dribbling, while RA without the ball showed no significant benefits. This highlights the importance of task‐specific effects observed during short‐term interventions.The decline in RA performance due to fatigue was less pronounced with stroboscopic training, which may be attributed to its potential to help maintain agility and decision‐making under fatigue by providing a perceptual–cognitive advantage.The effects of stroboscopic exposure were more pronounced for RA than for directional speed changes in the Illinois Agility Test. This highlights its specific benefits in enhancing perceptual–cognitive responses in non‐planned over planned agility maneuvers. [ABSTRACT FROM AUTHOR]