Changes in availability and usage of electrophysical agents by physical therapists: a 5 year longitudinal follow-up study

[Purpose] There have been concerns that the availability and usage of electrophysical agents have decreased, based on data from cross-sectional surveys. The aim of this study was to conduct the first five-year follow-up longitudinal survey to determine the changes in the availability and usage of electrophysical agents in Nagano Prefecture, Japan. [Participants and Methods] This longitudinal observational study employed the same postal questionnaire survey of practicing clinicians in 2014 and 2019. A total of 22 modalities had been selected for inclusion in the questionnaire based on what is used in clinical facilities and hospitals. [Results] The response rate was 71% and 63% for 2014 and 2019, respectively. The modalities that were high in availability and usage for both 2014 and 2019 were hot packs, ultrasound, cryotherapy and low frequency. While most modalities demonstrated a decreased trend in usage, electrical stimulation devices increased from 2014 to 2019. The results also demonstrated that usage was affected by gender (males greater than females), years of experience (older greater than younger), qualifications (diplomas greater than degrees), and confidence (confident greater than non-confident). [Conclusion] Our results may assist educators with designing educational curricula that is consistent with the needs of clinicians.