Long-Term Effect of Caffeine Intake on Speech and Sound Perception in People with Normal Hearing

IF 0.4 Q4 AUDIOLOGY & SPEECH-LANGUAGE PATHOLOGY Auditory and Vestibular Research Pub Date : 2022-04-05 DOI:10.18502/avr.v31i2.9118
S. M. Taghavi, Ahmad Geshani, N. Rouhbakhsh, A. Pourbakht, H. Seraji
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Abstract

Background and Aim: Caffeine intake enhances concentration through affecting brain functions. It also improves attention to the signal which is believed to be associated with increased noise tolerance and improved speech perception. This study aimed to evaluate the long-term effects of caffeine intake on simultaneous speech and sound perception in people with normal hearing. Methods: This double-blind study was conducted on 90 people aged 18-34 years (45 males and 45 females), randomly assigned to two intervention groups (receiving 3 and 5 mg/kg caffeine) and a control group (receiving placebo). The acceptable noise level (ANL) test was conducted before and five hours after intervention. Results: Comparison of ANL scores before and after intervention showed a significant difference in the 3 mg/kg caffeine group (p=0.002), but not in the placebo (p=0.497) and 5 mg/kg caffeine (p=0.146) groups. Between-group analysis showed a significant difference between the placebo and 3 mg/kg caffeine groups in the ANL five hours after (p=0.005), while the difference was not significant between the placebo and the 5 mg/kg caffeine groups (p=0.139). Moreover, there was no significant difference in the ANL between the 3 and 5 mg/ kg caffeine groups (p=0.148). Conclusion: Caffeine intake affects noise tolerance, depending on the dose of caffeine. The ANL and speech tolerance improve five hours after consuming 3 mg/kg of caffeine. Keywords: Caffeine; noise perception; normal hearing; acceptable noise level test
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咖啡因摄入对听力正常人群言语和声音感知的长期影响
背景与目的:咖啡因摄入通过影响大脑功能来提高注意力。它还提高了对信号的注意力,这被认为与增强的噪音耐受性和改善的语音感知有关。这项研究旨在评估咖啡因摄入对听力正常的人同时说话和声音感知的长期影响。方法:对90名年龄在18-34岁之间的人(男45名,女45名)进行双盲研究,随机分为2个干预组(接受3和5 mg/kg咖啡因)和对照组(接受安慰剂)。在干预前和干预后5小时分别进行可接受噪声水平(ANL)测试。结果:干预前后ANL评分比较,3 mg/kg咖啡因组差异有统计学意义(p=0.002),安慰剂组差异无统计学意义(p=0.497), 5 mg/kg咖啡因组差异无统计学意义(p=0.146)。组间分析显示,在5小时后的ANL中,安慰剂组和3 mg/kg咖啡因组之间存在显著差异(p=0.005),而安慰剂组和5 mg/kg咖啡因组之间差异不显著(p=0.139)。此外,3和5 mg/ kg咖啡因组的ANL无显著差异(p=0.148)。结论:咖啡因摄入会影响噪声耐受性,这取决于咖啡因的剂量。在摄入3 mg/kg咖啡因5小时后,ANL和言语耐受能力得到改善。关键词:咖啡因;噪声感知;听力正常;可接受噪音水平测试
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来源期刊
Auditory and Vestibular Research
Auditory and Vestibular Research Medicine-Otorhinolaryngology
CiteScore
0.60
自引率
20.00%
发文量
0
审稿时长
12 weeks
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