Effects of matured hop bitter acids on heart rate variability and cognitive performance: A randomized placebo-controlled crossover trial

Agriculture & Biology

• bitter acids 100%
• hops 73%
• cognition 71%
• cross-over studies 67%
• placebos 66%
• heart rate 54%
• vagus nerve 28%
• nerve tissue 26%
• confidence interval 21%
• taste receptors 13%
• beers 11%
• researchers 8%
• mice 5%

Medicine & Life Sciences

• Humulus 84%
• Cross-Over Studies 55%
• Acids 45%
• Heart Rate 44%
• Placebos 41%
• Autonomic Pathways 26%
• Vagus Nerve 24%
• Confidence Intervals 12%
• Psychological Power 9%
• Cognition 7%
• Research Personnel 7%
• Depression 6%