Can beneficial frequencies in physiotherapy help treatment? Scoping Review

INTRODUCTION: The use of so-called beneficial music such as 432 Hz can be a support before andafter rehabilitation treatment. However, nowadays, they are hardly ever suggested because theyare often little known or disregarded by rehabilitation clinicians. This review aimed to map andsummarise the literature to identify interventions using the beneficial 432 Hz music.METHODS: Four databases were searched until December 2022. The studies considered the useof the beneficial 432 Hz frequency before or after rehabilitation treatment. All interventions andcontexts were considered. No restrictions were applied regarding language, study design, andpublication type. Grey literature and reference lists of included articles were not identified. Theresults were presented in numerical and thematic form.RESULTS: From 23 initial registrations, 4 studies fulfilled the inclusion criteria. Most of the articleswere randomized controlled trials (RCTs) and considered both young and adult sporty and nonsportypatients who used five-toed socks. The authors discussed only one range of interventions:conservative (n = 4). Specifically, the use of five-toed socks for a period of more than one week.CONCLUSIONS: This is the first scoping review to provide a comprehensive overview of the topic.The results revealed clear gaps in primary research, confirming that current management is basedon knowledge of beneficial frequencies, particularly the 432 Hz. This review may be useful forgeneral management and may provide a starting point for future research.