Main Article Content
Music, 432Hz, 440Hz, Sleep, Stress, Spinal injuries, Patients.
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.
2. AAVV. American Music Therapy Association, What is music therapy? Musictherapy.org, Accessed on 20 March 2020. https://www.musictherapy.org/about/musictherapy/
3. Spiro N. Music and dementia: observing effects and searching for underlying theories. Aging Ment Health. 2010;14(8):891-9.
4. Petrovsky D, Cacchione PZ, George M. Review of the effect of music interventions on symptoms of anxiety and depression in older adults with mild dementia. Int Psychogeriatr. 2015;27(10):1661-70.
5. Boso M, Politi P, Barale F, Enzo E. Neurophysiology and neurobiology of the musical experience. Funct Neurol. 2006;21(4):187-91.
6. Joanna Briggs Institute. Music as an intervention in hospitals. Best practice: evidence-based information sheets for health professional. 2009;13:1-4.
7. Gooding L, Swezey S, Zwischenberger JB. Using music interventions in perioperative care. South Med J. 2012;105(9):486-90.
8. Sili A, Fida R, Proietti D, Vellone E, Alvaro R. Ridurre l'ansia preoperatoria a "suon di musica": studio sperimentale in una Unità Operativa di Chirurgia Vascolare [Decreasing preoperative anxiety by music: experimental study in a vascular surgery unit]. Assist Inferm Ric. 2013;32(1):13-9.
9. Matsota P, Christodoulopoulou T, Smyrnioti ME, Pandazi A, Kanellopoulos I, Koursoumi E, Karamanis P, Kostopanagiotou G. Music's use for anesthesia and analgesia. J Altern Complement Med. 2013;19(4):298-307.
10. Sung HC, Chang AM, Abbey J. The effects of preferred music on agitation of older people with dementia in Taiwan. Int J Geriatr Psychiatry. 2006;21(10):999-1000.
11. Jespersen KV, Koenig J, Jennum P, Vuust P. Music for insomnia in adults. Cochrane Database Syst Rev. 2015;(8):CD010459. Published 2015 Aug 13.
12. Chee MW, Chuah YM. Functional neuroimaging and behavioral correlates of capacity decline in visual short-term memory after sleep deprivation. Proc Natl Acad Sci U S A. 2007;104(22):9487-9492.
13. Paterson JL, Dorrian J, Ferguson SA, Jay SM, Lamond N, Murphy PJ, Campbell SS, Dawson D. Changes in structural aspects of mood during 39-66 h of sleep loss using matched controls. Appl Ergon. 2011;42(2):196-201.
14. Knutson KL, Van Cauter E. Associations between sleep loss and increased risk of obesity and diabetes. Ann N Y Acad Sci. 2008; 1129:287-304.
15. Parthasarathy S, Vasquez MM, Halonen M, Bootzin R, Quan SF, Martinez FD, Guerra S. Persistent insomnia is associated with mortality risk. Am J Med. 2015;128(3):268-75.e2.
16. Trahan T, Durrant SJ, Müllensiefen D, Williamson VJ. The music that helps people sleep and the reasons they believe it works: A mixed methods analysis of online survey reports. PLoS One. 2018;13(11):e0206531.
17. Shafazand S, Anderson KD, Nash MS. Sleep Complaints and Sleep Quality in Spinal Cord Injury: A Web-Based Survey. J Clin Sleep Med. 2019;15(5):719-724.
18. Hultén VDT, Biering-Sørensen F, Jørgensen NR, Jennum PJ. A review of sleep research in patients with spinal cord injury. J Spinal Cord Med. 2018; 4:1-22.
19. Krueger H, Noonan VK, Trenaman LM, Joshi P, Rivers CS. The economic burden of traumatic spinal cord injury in Canada. Chronic Dis Inj Can. 2013;33(3):113-22.
20. Gray JJ. The Symbolic Universe Geometry and Physics 1890-1930. Oxford University press, 1999
21. Rutherford-Johnson T, Kennedy M, Bourne J. The Oxford Dictionary of Music. Oxford University Press, 2012.
22. Tuis TR. 432 Hertz: la Rivoluzione Musicale. [432 Hertz: the Musical Revolution]. Nexus Edizioni, 2010.
23. International Organization for Standardization. ISO 16:1975. Acoustics-Standard tuning frequency (Standard musical pitch). Accessed on 20 March 2020. https://www.iso.org/standard/3601.html
24. Rudolph TE, Leonard AV. Recording in the Digital World: Complete Guide to Studio Gear and Software. Berklee Press Publications, 2001.
25. Renold M. Intervals, Scales, Tones and the Concert Pitch C, Temple Lodge Publishing, 2004.
26. Tennenbaum J. The fountation of scientific musical tuning. Fidelio. 1992;1. Accessed on 10 March 2020. https://archive.schillerinstitute.com/fid_91-96/fid_911_jbt_tune.html
27. Crotti E. Integral 432 Hz Music, Awareness, music and meditation. Wenz Book, 2017.
28. Dionidream. Perché Mozart, Verdi, Pink Floyd ed altri usavano la frequenza di 432 Hz? [Why did Mozart, Verdi, Pink Floyd and others use the 432 Hz frequency?] Dionidream.com. Accessed on10 March 2020. https://www.dionidream.com/perche-mozart-verdi-pink-floyd-e-altri-usavano-la-frequenza-di-432hz/
29. Stefanelli MA. Musica coerente con intonazione e accordatura a 432 Hz [Consistent music with intonation and 432 Hz tuning]. Sublimen.com. Accessed on 10 March 2020. https://www.amadeux.net/sublimen/dossier/musica-intonazione-432-hz.html.
30. Giardi D. Accordatura a 432 Hz: cosa significa? [432 Hz tuning: what does it mean?] Scienza e Conoscenza.it. Accessed on 10 March 2020. https://www.scienzaeconoscenza.it/blog/consapevolezza-spiritualita/accordatura-a-432-hz
31. Di Nasso L, Nizzardo A, Pace R, Pierleoni F, Pagavino G, Giuliani V. Influences of 432 Hz Music on the Perception of Anxiety during Endodontic Treatment: A Randomized Controlled Clinical Trial. J Endod. 2016;42(9):1338-43.
32. Calamassi D, Pomponi GP. Music Tuned to 440 Hz Versus 432 Hz and the Health Effects: A Double-blind Cross-over Pilot Study. Explore (NY). 2019;15(4):283-290.
33. Hachem LD, Ahuja CS, Fehlings MG. Assessment and management of acute spinal cord injury: From point of injury to rehabilitation. J Spinal Cord Med. 2017;40(6):665-675.
34. Audacity. Free, open source, cross-platform audio software. Audacityteam.org. Accessed on 10 March 2020. https://www.audacityteam.org/
35. Hays RD, Martin SA, Sesti AM, Spritzer KL. Psychometric properties of the Medical Outcomes Study Sleep measure. Sleep Med. 2005;6(1):41-4.
36. Viala-Danten M, Martin S, Guillemin I, Hays RD. Evaluation of the reliability and validity of the Medical Outcomes Study sleep scale in patients with painful diabetic peripheral neuropathy during an international clinical trial. Health Qual Life Outcomes. 2008;6:113.
37. Cohen S, Kamarck T, Mermelstein R. A global measure of perceived stress. J Health Soc Behav. 1983;24(4):385-96.
38. Robb SL, Burns DS, Carpenter JS. Reporting guidelines for music-based interventions. J Health Psychol. 2011 Mar;16(2):342-52.