Listening to 432 Hz music has distinct health and psychological benefits compared to 440 Hz
the verdict
CONTESTED
contested - evenly split
refutedsupported
the weight of evidence
3 sources for · 2 against
Scientific studies directly comparing 432 Hz and 440 Hz music show mixed results; some report physiological improvements such as reduced heart rate or better sleep scores with 432 Hz, while other controlled studies find no significant differences or report better performance outcomes with 440 Hz.
CONTEXT
The current reference frequency for tuning musical instruments is 440 Hz. Some theorists and musicians claim that the 432 Hz tuning has better effects on the human body, but there are no scientific studies that support this hypothesis.
OBJECTIVE
To identify differences in vital parameters and perceptions after listening to music at different frequencies, 440 Hz versus 432 Hz.
DESIGN
Cross-over pilot study.
SETTING
A room dedicated to listening to music, in an Italian city.
PARTICIPANTS
33 volunteers, not suffering from acute and/or chronic diseases.
INTERVENTIONS
Two sessions of music listening on different days. Both sessions used the same music (movie soundtracks) but tuned to 440 Hz on one day and 432 Hz on the other. Each session consisted of 20 min' listening.
MAIN OUTCOME MEASURES
Vital parameters (blood pressure, heart rate, respiratory rate, oxygen saturation), perceptions (physical and emotional sensations, for example fatigue and stress), levels of concentration during the listening session, and general satisfaction with the experience.
RESULTS
432 Hz tuned music was associated with a slight decrease of mean (systolic and diastolic) blood pressure values (although not significant), a marked decrease in the mean of heart rate (-4.79 bpm, p = 0.05) and a slight decrease of the mean respiratory rate values (1 r.a., p = 0.06), compared to 440 Hz. The subjects were more focused about listening to music and more generally satisfied after the sessions in which they listened to 432 Hz tuned music.
CONCLUSIONS
The data suggests that 432 Hz tuned music can decrease heart rate more than 440 Hz tuned music. The study results suggest repeating the experiment with a larger sample pool and introducing randomized controlled trials covering more clinical parameters.
Background Preferred music has been shown to enhance psychological and physiological parameters in order to increase physical performance in high intensity exercises. However, the effects of preferred music are less conclusive with different frequencies. The present study assessed the effects of listening to preferred music during warm-up at different frequencies on physical performance and psychophysiological responses specific in male and female kickboxers. Methods In a double-blind crossover study design, fifteen men and thirteen women kickboxers randomly performed the intermittent kickboxing anaerobic speed test (IKAST) after listening to preferred music around 440 Hz (PM44Hz), or 432 Hz (PM432Hz) frequencies or no music during warm-up. Physical performance indices, heart rate, blood lactate, rating of perceived exertion (RPE) and feeling scale (FS) were measured. Results Warm-up with PM440 Hz significantly improved IKAST performance indices with the highest impact velocity and FS, lowest mean heart rate and RPE, followed by PM432 Hz for both sexes compared to the control condition. For sex interaction, men had lower heart rate with PM440Hz, women the lowest with PM432Hz. In addition, women had higher positive feeling scale with PM440Hz, while men did not experience any significant change between the two musical conditions. Conclusion PM440Hz during warm-up was found to be more effective in improving specific performance, positive mood with a potential dissociation from discomfort during the test. Also, women were more affected by the music frequency difference compared to men.
Background and aim of the work. Among people with spinal cord injuries, sleep disorders are considered one of the top well-being priorities. Some studies suggest that listening to music promotes sleep and improves its quality. These studies usually used music standardised at the frequency of 440 Hz. The aim of the present study is to compare the effects of listening to music tuned to 440 Hz and music tuned to 432 Hz on sleep in patients with spinal cord injuries. Methods. Double-blind cross-over pilot study in a single Italian Spinal Unit. 12 patients with spinal injuries were provided with mp3 players loaded with their favourite music tuned to 440 Hz or 432 Hz. They were invited to listen to music for 30 minutes each day, in the two periods of the study. “Sleep Scale for Medical Study” modified for this study, and the “Perceived Stress Scale” were chosen. Results. The participants were eight males (mean age =58.12, SD ±13.62), and four females (mean age =56.25, SD ±14.17). Five were quadriplegics and seven were paraplegics. Listening times and wash-out periods were variable. The stress decreased, but not significantly, with listening to music at both frequencies. After listening to music at 432 Hz there was a significant improvement in sleep scores (+3.6, p=0.02), while there was no improvement in sleep scores listening to music at 440 Hz (-1.50, p=0.34). Conclusions. The results suggest that further studies on music interventions at 432 Hz should be performed. It is advisable to increase sample sizes and use a range of different research methods. (www.actabiomedica.it)
<h4>Background</h4>This study investigated whether a sound intervention tuned to 432 Hz (Hz) yields differential effects on cardiovascular parameters and psychological outcomes compared to 443 Hz, which is the concert pitch in German professional orchestras.<h4>Methods</h4>Using a randomized cross-over design, patients with cancer were recruited to receive both a 15-minute sound intervention with a body monochord tuned to 432-443 Hz. Before (pre) and after (post) intervention, cardiovascular parameters were measured using the VascAssist2.0. In addition, visual analogue scales (VAS) for emotional well-being, anxiety, stress, pain and sadness were also assessed pre and post intervention.<h4>Results</h4>43 patients (8 male, 35 female) with a median age of 61 years (range 35-86) were included. Both interventions led to a significant reduction in heart rate with a more pronounced effect for 432 Hz (median reduction - 3 bpm (432 Hz) vs. median reduction - 1 bpm (443 Hz), p = 0.04). While heart rate variability was increased exclusively by 432 Hz (median increase + 3 ms, p = 0.01), both vascular resistance (median reduction - 5%, p = 0.008) and stiffness (median reduction %, p = 0.04) were significantly reduced by 432 Hz, which was not observed at 443 Hz. Nevertheless, these effects were not significantly different compared to 443 Hz. On the other hand, 432 Hz led to a reduced pulse wave velocity (median reduction - 0.5 m/s, p < 0.001), which was also significantly different compared to 443 Hz (p < 0.001). Improvement in VAS was observed for both groups, with significant increases in emotional well-being and reduction in fatigue, anxiety and stress for both intervention timepoints, although the majority showed no increased VAS scores even before the intervention (median values 0 for anxiety and stress).<h4>Conclusion</h4>Sound interventions tuned to 432-443 Hz exert both positive effects in cancer patients. While psychological outcomes are improved by both interventions, 432 Hz leads to a more pronounced but not significantly different effect to 443 Hz on objective cardiovascular parameters, which reflect deeper relaxation.
The present study aims to see whether music (cheerful and sad) tuned to different frequencies (432 Hz vs. 440 Hz) cause different effects on the listener’s emotions. In the research, the effects of cheerful and sad music samples at different frequencies were examined within the framework of variables such as Heart Rate Variability (HRV), emotions felt and mood. The study was carried out with a total of 51 participants (31 women comprising 60.8% of the study group, and 20 men comprising 39.2% of the study group) who have not received music education. The average age of the participants is 22.19 (S = 1.08, range = 20-25). In the study, the activation levels of the autonomic nervous system were assessed using Heart Rate Variability (HRV), whereas the moods of the participants before listening music were assessed using the Profile of Mood States (POMS) scale. Finally, The Geneva Emotional Music Scales (GEMS) was used to assess the potential emotions and mood state to appear after listening music. All music samples used in the study (one cheerful and one sad per participant) were chosen by the relevant participant. The conversion of the samples recorded at 440 Hz tuning frequency, to 432 Hz was carried out with a Max/MSP patch designed specifically for the study. The findings of the study show that the cheerful and sad music tuned to different frequency levels (432 Hz vs. 440 Hz) do not induce significant variation in sympathetic and parasympathetic activation levels. However, regardless of the tuning, the participants who listened cheerful music reported higher levels of relaxation after listening. Moreover, again regardless of the tuning, according to GEMS results, the participants experienced higher levels of sublimity compared to unease, and also higher levels of unease compared to vitality. The analysis regarding cheerful music, in turn, found that the participants, this time, experienced higher levels of vitality compared to sublimity, and higher levels of sublimity compared to unease. In the most comprehensive analysis with no reference to the cheerful or sad character of the sample, the participants who listened 440 Hz pieces reported rather negative mood after listening music compared to the participants who listened 432 Hz pieces. Moreover, men were observed to report even higher levels of negative mood after listening 440 Hz pieces, compared to their mood after listening 432 Hz pieces. All the findings thus reached imply that different tunes lead to variation in reported moods, even though they do not bring about changes in sympathetic and parasympathetic activation levels.
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Özet
Bu çalışmanın amacı, 432 Hz ve 440 Hz frekanslara göre ayarlanmış müziklerin (neşeli ve hüzünlü) duygu oluşumunda bir fark yaratıp yaratmayacağını değerlendirmektir. Farklı frekanslardaki neşeli ve hüzünlü müzik örneklerinin yarattığı etkiler, Kalp Hızı Değişkenliği (KHD), hissedilen duygular ve duygu durumu gibi değişkenler çerçevesinde incelenmiştir. Araştırma, müzik eğitimi almayan 31'i (%60.8) kadın, 20'si (%39.2) erkek toplam 51 kişiyle gerçekleştirilmiştir. Katılımcıların genel yaş ortalaması 22.19’dur (S = 1.08, ranj = 20-25). Çalışmada otonom sinir sistemi aktivasyonunu değerlendirmek için Kalp Hızı Değişkenliği (KHD) ölçümü; müzik dinleme öncesi anlık duygu durumunu (mood) değerlendirmek için Duygu Durumu Profili Ölçeği (POMS) ve müzik dinleme sonrası oluşan muhtemel duyguları değerlendirmek için Cenova Duygu Müzik Ölçeği (GEMS) kullanılmıştır. Çalışmada kullanılan bütün müzik örnekleri (bir neşeli, bir hüzünlü) her bir katılımcının kendisi tarafından belirlenmiştir. 440 Hz akort frekansına göre kaydedilmiş örneklerin 432 Hz frekansa dönüştürülmesi çalışmaya özgü geliştirilmiş bir Max/MSP patch uygulaması ile yapılmıştır. Bulgular, farklı frekanslara (432 Hz ve 440 Hz) göre dinlenen neşeli ve hüzünlü müziklerin, sempatik ve parasempatik akt
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This check searched the claim as stated. It did not run a separate search for evidence against it.